WO2004065689A1 - Sheet-like material manufacturing method and sheet-like material - Google Patents

Sheet-like material manufacturing method and sheet-like material Download PDF

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Publication number
WO2004065689A1
WO2004065689A1 PCT/JP2003/000421 JP0300421W WO2004065689A1 WO 2004065689 A1 WO2004065689 A1 WO 2004065689A1 JP 0300421 W JP0300421 W JP 0300421W WO 2004065689 A1 WO2004065689 A1 WO 2004065689A1
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WO
WIPO (PCT)
Prior art keywords
sheet
hood
gas
heat
substance
Prior art date
Application number
PCT/JP2003/000421
Other languages
French (fr)
Japanese (ja)
Inventor
Morimasa Hanaya
Original Assignee
Tokushu Paper Mfg. Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokushu Paper Mfg. Co., Ltd. filed Critical Tokushu Paper Mfg. Co., Ltd.
Priority to PCT/JP2003/000421 priority Critical patent/WO2004065689A1/en
Priority to AU2003203184A priority patent/AU2003203184A1/en
Publication of WO2004065689A1 publication Critical patent/WO2004065689A1/en

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air
    • D21F5/182—Drying webs by hot air through perforated cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/20—Waste heat recovery

Definitions

  • the present invention relates to a method for producing a sheet-like substance having a step of drying a sheet-like substance in a wet state such as paper or a wet nonwoven fabric, and a sheet-like substance.
  • Background technology As a conventional method of drying paper on a paper machine, there are two types: a drying cylinder with a pressure vessel structure that internally heats with medium- and low-pressure steam, and a cylinder that internally heats with direct combustion or electromagnetic induction heating.
  • a drying method mainly based on heat conduction is generally used.
  • the above cylinder is an open hood with only a roof and a hanging wall, or a lift door with many sheets and ropes, drive shafts and pipes, openings for ducts, and many gaps for up and down movement. Is surrounded by a sparse closed hood having
  • a large amount of outside air of medium-temperature and low-humidity air heated by low-pressure steam is blown into various parts of the hood, mainly through pockets between the dried cylinders.
  • the water vapor evaporated from the sheet-like substance and the air blown mainly through the pockets are the low-temperature air that flows from the sheet-like substance traveling at high speed through the traveling opening and the numerous hood openings and gaps.
  • the hood is carried away at a medium humidity and low humidity at a relative humidity of 30% or less so that dew does not form inside the hood. High altitudes always face the risk of condensation.
  • the internal pressure is high at the upper part and high humidity air leaks into the room, forming dew on the ceiling and the periphery of the papermaking room, and the lower part becomes negative pressure and a large amount of low-temperature air. Flows into.
  • the inside of the hood and the ceiling of the building are locally heated, and more valuable heat energy is wasted.
  • the Tappi Journal published in May 2000, states that a sheet-like material is sandwiched between two endless steel belts, and a high-pressure box opened on the belt surface is provided facing up and down. Cooling and evaporating water vapor is immediately condensed on the cooling surface, drained, and taken off by the endless fabric belt, so that the wet sheet-like substance is restrained from expanding and contracting. A method of drying at a high temperature of over ° C has been proposed.
  • This method requires precious high-pressure steam, but the temperature inside the container is limited by the saturation temperature of the steam to the extent that it is heated because of the high-temperature steam heating in a closed container.
  • the sheet-like substance can be heated using superheated steam at 250 ° C. at substantially atmospheric pressure (of course, a direct combustion method is preferred for heating in a heat exchanger). is there.
  • a vapor pressure of 3.976 MPa is required at the saturated temperature of 250 ° C. Therefore, steam turbine power generation due to the steam pressure difference at the Central Power Station is not possible.
  • this method only uses a large amount of cooling water to obtain low-temperature hot water.
  • the above-mentioned method requires a pressurized box facing the pressure-resistant structure, a sturdy frame structure corresponding to the mechanical structure, enormous capital investment by high-pressure heat exchangers and high-pressure pumps, Steam costs are required.
  • the effect of partially improving the quality, such as improving the strength of the paper is great, but on the other hand, the high compression force of the upper and lower steel belts increases the density, resulting in a thinner paper.
  • the heating surface is as smooth as Yankee skin, while the cooling surface is —Because of the uneven surface with ⁇ , there is a huge difference between the front and back. Therefore, there is a problem that it is not suitable except for some freezer warehouse liner pods and has no thermo-economic effect.
  • 0 kg / cm 2 and heated at steam in the inside and outside, were placed in open to the outside is referred to as one large ⁇ cylinder (aka Yankee dryer, entrance of its sides Ya sheet material fully interior
  • a canopy hood is installed in the upper half of the center, and kerosene is burned using outside air and some recirculated humid air as an air source.
  • a practical method is to spray high-temperature gas directly onto the sheet material that is exposed from the outer periphery of the drying cylinder (that is, not covered by a band, etc.) at a high speed of 70 to 120 m / s to dry quickly. Have been.
  • the drying device In addition, with the speeding up of papermaking, the number of drying cylinders has increased to several tens or nearly one hundred, complicating the equipment configuration. Therefore, in the drying device, the shrinkage of the wet paper web in the width direction or the traveling direction is pulled with a certain tension to perform complicated control by sectional driving, or it is possible to use an endless fabric, a suction roll, etc. It is trying to prevent paper breakage and increase the uniformity of drying in the vertical and horizontal directions by using a layer box. However, the paper machine must be stopped each time because paper breakage frequently occurs between many dryers and sections. In this case, it is necessary to open the sparse closed hood to remove the waste paper and perform the restarting process. The nature also increases.
  • multi-cylinder drying cylinders have increased in diameter from 1.2 to 1.5 m, and even 2 m, and have appeared up to those with a width of 1 Om or more. Therefore, they are struggling with transportation problems from cylinder manufacturing plants to machine assembly plants and final paper mills. Vapor pressure is 1 9 6 1 -.. 3 9 2 3 x 1 0 4 high as P a, and ⁇ made as the two pressure vessels Drying cylinders have the potential to explode due to nests and deterioration over time, and have problems such as personal injury. In addition, the location of the food industry in Japan is becoming increasingly difficult due to its poor working environment and dust pollution. Therefore, drying cylinders made of plastics have to rely on imports from overseas countries, and they are becoming the Achilles' heel of the Japanese paper industry, including transportation costs.
  • the drying process has been accelerated, for example, to 200 m / min for newspapers, and the drain condensed inside may sometimes rotate around the outer periphery of the drying cylinder. In this case, drainage is not easy, and problems such as unevenness in drain thickness in the width direction occur.
  • the dew point temperature is limited to 60 ° C. If the amount of dry air is smaller than the amount of evaporated water vapor, it will become saturating and moist air and form dew in the hood. In this case, the paper surface is contaminated by the fall of the drain, making papermaking difficult.
  • the temperature of the sheet material contacting the drying cylinder reaches nearly 100 ° G, but the temperature of the sheet material contacting the belt-like band (fabric) is re-wetted by the moisture that has contacted and moved from the cylinder side. Due to the latent heat of evaporation of water on the surface in contact with the fabric, the temperature is restricted to within 90 ° C.
  • the voids in the fabric are filled with water vapor and dew-condensed water that evaporate from the sheet-like material, and the temperature inside the fabric is balanced with the dew point temperature of the humid air (65 to 70 ° C).
  • the dew point temperature of the humid air 65 to 70 ° C.
  • the water is evaporating directly from the surface of the sheet-like material.
  • endless fabrics are used to dry the sheet by sandwiching it between the drying cylinder and restrict the free shrinkage of the sheet-like material to increase dimensional stability.
  • Evaporation in the section where free contraction is restricted by the fabric is only inside / outside of 200/0, and evaporation at 800/0 is in the free-running section of the free-shrinkable sheet material. It has occurred.
  • a multi-cylinder drying cylinder has been installed in one stage, and a large diameter suction roll has been provided as close as possible to the drying cylinder in the meantime, so that the free running section between the drying cylinders has been shortened to solve the above-mentioned disadvantage. There is something we aimed at.
  • a method for producing a sheet-like substance of the present invention comprises: a method for producing a sheet-like substance having a step of drying a wet sheet-like substance;
  • the inner box (17A) and the outer box (17B), which have expansion and contraction due to thermal expansion, are laminated and integrated via a heat insulating material to form a box hood (17).
  • a seal mechanism is provided at each of the through-holes of the hood to block the inside of the hood from outside air, and a rotator (1) having a smooth outer peripheral surface inside the hood and synchronized with the rotation of the rotator A band-like band (36) having air permeability that moves by moving the sheet-like material between the rotating body and the band-like band while passing the sheet-like material inside the hood through a gas circulation device. It is recirculated and heated by a heating gas having a dry-bulb temperature of 80 ° C or higher, and substantially corresponds to the total weight of the vapor evaporated from the sheet-like substance and the supply water vapor supplied to the inside of the hood. High-humidity air having a dew point temperature of 60 ° C. or more containing water vapor to be exhausted, and low-humidity air having substantially the same amount as the exhaust air amount and the dry air weight are supplied into the hood.
  • the method for producing a sheet-like substance of the present invention is a method for producing a sheet-like substance having a step of drying a wet-state sheet-like substance, the method comprising: The inner box (17A) and the outer box (17B) are stacked and integrated via a heat insulating material to form a hood (17) of the box, and the sheet-like shape with respect to the inside of the hood is formed.
  • a seal mechanism is provided at each of the through-holes of the hood including the inlet and the outlet of the substance (35) to block the inside of the hood from outside air, and a rotating body having a smooth outer peripheral surface inside the hood 1) and a gas-permeable band (36) that moves in synchronization with the rotation of the rotating body, and a gas circulation heating device is provided while sandwiching the sheet-like material between the rotating body and the band. Heating gas of 100 ° C. or more from the outer periphery of the rotating body using Characterized by circulating heated by blowing into a sheet material.
  • the sheet-like substance of the present invention has an inner box (17A) and an outer box (17B) which have a hermetically sealed structure and can be expanded and contracted by thermal expansion via a heat insulating material.
  • a box-shaped hood (17) is formed by stacking the hood, and a sealing mechanism is provided at each of the tight portions of the hood including an inlet portion and an outlet portion of the sheet-like substance with respect to the inside of the hood, and the hood is provided.
  • a rotator having a smooth outer peripheral surface and a tight band (36) which moves in synchronization with the rotation of the rotator are provided inside the hood to block the inside from the outside air. While the sheet-like material (35) is sandwiched between the belt-like bands, a heating gas of 100 ° C.
  • a circulating gas heat exchanger 34
  • the inside of the sheet material in the wet area Puretsu from Li inside by the direct heating 9 0 ° C or higher to A large number of porous parts are formed in the sheet-like substance by shear flow moisture evaporation to increase the bulk, improve the absorption and impregnation of water, printing ink, various resins and chemicals, and increase the glass content in a water vapor atmosphere. It is characterized by lowering the transition point temperature and melting hemicellulose and lignin in the raw pulp to greatly increase the physical strength such as tensile strength.
  • the inventor completely removed the internal heating rotator made of rotatable low-pressure steam using heat insulating materials, including the side surfaces, except for the cross section of the entrance of the sheet-like substance to the hood and the exit section of the hood during the development process. Heated gas above the saturation temperature corresponding to the supply steam pressure in a sealed state
  • crystalline ffi-cellulose-based pulp can be made porous by instantaneous vaporization and the bulk density can be increased by evaporating water due to the pressure flow from the inside of the pulp.
  • % Can be provided. Heating gas is blown while sandwiching the sheet-like substance between the rotating body and the air-permeable heat-resistant strip, and drying is performed while suppressing expansion and contraction of the sheet-like substance, so that dimensional stability such as underwater elongation is improved.
  • the drying conditions by selecting the front and back surfaces of the paper, the degree of curl in the CD and MD directions can be adjusted to prevent curling. In addition, it is cut off by running while always sandwiching between You can eliminate paper.
  • the moisture in the sheet is directly heated to 100 ° C or higher in the wet area by high-temperature superheated steam heating to sterilize microorganisms by approximately 100%, producing aseptic paper for food and medical uses such as cup base paper and milk carton base paper.
  • C-Mushi “New technology in food processing” published by Sumio Kawai in “Drying and disinfecting of bread crumbs in a superheated steam fluidized bed” with about 700,000 pieces in a 150 ° C superheated steam atmosphere The number of surviving bacteria was 1 after 1 minute, but the number of surviving bacteria was 36 and 00 after 5 minutes in 150 ° C heated air. Can be.
  • the water in the sheet is directly heated to 10 ° C or more in the wet area by high-temperature superheated steam heating, and a pressure flow from the inside of the sheet is used. Due to the evaporation of water, superheated steam of 10 ° C or more collides with the wet strength agent and the dry strength agent, and the paper strength development mechanism is advanced in the water vapor atmosphere. The aging time was eliminated, and stable paper strength was developed immediately after papermaking.
  • hoods are open hoods with only a roof and hanging walls, or a number of seats and ropes, as well as openings for drive shafts, pipes, and ducts, and ascent and descent with many vertical movement gaps. It was surrounded by a sparse closed hood with doors, making it impossible to seal the interior.
  • the internal pressure is high at the upper part and high-humidity air leaks into the room, forming dew on the ceiling and surroundings in the papermaking room, and the negative pressure is generated at the lower part, resulting in a large amount of low-temperature air. Flows into.
  • the inside of the hood and the ceiling of the building are locally heated, and more valuable heat energy is wasted. That is, the conventional paper machine hood is bypass-through, and escapes the precious high-temperature exhaust gas to the outside air without circulating it.
  • the forced lubrication system in the high-temperature hood heated all the oil supply pipes and return pipes in the hood, causing the oil temperature to rise significantly, reducing the oil viscosity and causing problems with the lubrication system.
  • the high-temperature lubricating oil evaporates from the bearing case inside the hood and adheres to the inner surface of the hood in the low-temperature part inside the hood. If the hood temperature rises due to changes in operating conditions, it melts and falls and adheres to the sheet surface. And may contaminate valuable products. Initially, heat-resistant oils were considered, but the price was very high, and as a result of the test, volatile substances evaporated inside and outside of 100 ° C and the use was abandoned.
  • the oil supply pipe and return pipe in the hood of the forced lubrication system are insulated without interruption, and the casing of the bearing is water-cooled, and the return oil temperature is 98 ° C or less (preferably 90 ° C or less).
  • a forced cooling device was also provided inside the oil tank to keep the supply oil temperature at 60 ° C or lower (preferably 50 ° C or lower, more preferably 40 ° C or lower) to overcome the problem.
  • the structure of the hood is a hermetically sealed structure by joining the entire surface.
  • the joining method using thin panel is described as follows.
  • a thin sheet of SUS316 with a width of 1 m inside and outside and 1.5 mm inside and outside is bent at important places and reinforced in a rib shape, and heat is applied to necessary parts.
  • the entire surface is connected and integrated to form an inner box.
  • the inner box and the outer box consisting of an outer wall separated by heat insulating material are overlapped and integrated, and the penetration between the two boxes copes with thermal expansion. Isolate it with elastic insulation and seal its entrance and exit to completely block the inside of the inner box from outside air.
  • the inner box by full-surface joining includes electric welding, electron beam welding, plasma welding, and laser welding.
  • the box that is joined to the body by welding, crimping, press-fitting, caulking, bending, brazing, and the parts that are necessary for some maintenance are joined through sheet packing and the entire joint surface is joined by screw joining, etc.
  • the outer box does not need to be entirely joined, and may have a fixed structure. The thickness of insulation between the inner and outer boxes depends on the temperature inside the box, but it is usually 150 mm inside and outside the wall and 200 mm outside the ceiling.
  • the hood in which the inner box and the outer box are overlapped and integrated, is placed on a smooth surface sole plate that is fixed to the floor made of heat-resistant material with anchor ports, and heat is applied through a heat-resistant elastic sheet packing.
  • the box is installed so that it can move in parallel with the thermal expansion around the center of the box, and completely shuts out the outside air. If necessary, install via a heat-resistant packing so that it can be moved in parallel by thermal expansion, centering on the dowel pins at the center of the bottom surface of the outer box.
  • the wet sheet material shall be heated to a rotating cylinder and endless with a tension of at least 1.471 kN Zm, preferably at least 1.951 kN Zm. And rapidly dried (impact drying) in a superheated gas atmosphere of 100 ° C or more, and in the direction of travel caused by intra-fiber contraction caused by inter-fiber bonding. It was confirmed that tearing and shrinkage in the width direction were restrained by about 100%. As described above, according to the present invention, it is possible to produce a sheet having high dimensional stability, a small stiffness ratio, and no dry curl.
  • Lignin and hemicellulose are thought to be due to a decrease in the glass transition temperature.However, they are heated under a superheated steam atmosphere (100% steam) or high in absolute humidity (lkg / kg 'DA or more), respectively. Decreases the softening point temperature (134-250 ° C for dry rhidanine to 72 ° C under water saturation), increases the flexibility of the fiber, and increases the hydroxyl groups of cellulose. Wet paper strength is greatly increased by covalent bonds (ether, ester bonds) with other substances contained in wood.
  • Softened by shock drying with superheated steam of 100 ° G or more (or hot humid air of high temperature and high humidity with a dry bulb temperature of 80 ° G or more, preferably 100 ° G or more and a dew point temperature of 60 ° C or more)
  • a dry bulb temperature of 80 ° G or more preferably 100 ° G or more and a dew point temperature of 60 ° C or more
  • physical properties such as DRY tensile strength, WET tensile strength, water immersion elongation, burst strength, etc., are significantly improved compared to conventional internal cylinder heated dryer cylinder drying.
  • the improvement of various paper strengths is due to the use of softwood and hardwood.
  • KP Unbleached Kraft Pulp
  • BKP Butached Kraft Pulp
  • GW Round Wood
  • RGP Refmer Ground wood
  • P GW Pressureurized Stone Ground wood
  • CGP Chemical Ground Pulp
  • SCP Semi Chemical Pulp
  • TMP Thermo Mechanical Pulp
  • CTMP Chemical Thermo Mechanical Pulp
  • DIP De-Inked Pulp
  • the effect is further improved in newspaper rolled paper and cut base paper (liner and core base paper) and paperboard for paper containers such as white board and yellow board, which have a large proportion of DIP and mechanical pulp. Notable.
  • the surface of the sheet-like material becomes porous several to several hundred times by the pore tester by the mercury intrusion method, the apparent density of the paper decreases by 31%, and the sheet-like material is absorbed and released.
  • Moisture performance has been significantly improved, including absorption of printing ink on printing paper and inkjet paper, absorption and release of moisture on conditioning paper, and absorption of various resins and chemicals on base paper for impregnation and impregnated paper. And the impregnation properties have been dramatically improved.
  • both ends of the heat-resistant and air-permeable strip are arranged so as to extend outside the entrance and exit, and the sealing pinch roll and the heat-resistant brush seal are sandwiched between the strips. Since the seal portion with the seal is provided, the intrusion of outside air into the inside of the hood is completely blocked, and the prevention of outside air from entering is greatly improved.
  • the test was started by trial production of a rotating body capable of restraining the re-wet sheet-like substance by a gas-permeable strip and a wind tunnel provided with a superheated steam and heated air blowing cap around the rotating body.
  • the gas heated by circulating gas with an electric heater is blown into the wind tunnel and heated in advance.
  • various air shutoff devices were installed on the entrance loss slits as prototypes to test the wet sheet-like material introduced into the interior of the wind tunnel by fabric.
  • a small amount of air entered the surface of the sheet-like material and the fabric (band-like band) and the inside thereof, and the oxygen concentration meter could not read less than 1.0%.
  • the oxygen concentration value was reduced to 0% by the air shutoff method of the present invention, and a full-scale test could be started.
  • the gas conditions inside the wind tunnel were measured using a zirconia oximeter or hygrometer compatible with high-temperature superheated steam, and calibration was performed before and after the test using standard gases.
  • the gas mainly containing water vapor evaporated from the sheet-like substance is reheated by a gas circulation device to 100 ° C. or more, preferably 250 ° C. or more, so that the inside of the evaporation chamber is almost 100 ° C.
  • a gas circulation device to 100 ° C. or more, preferably 250 ° C. or more, so that the inside of the evaporation chamber is almost 100 ° C.
  • Filling with 0% superheated gas and controlling the gas supply / exhaust volume to the hood to set the pressure in the hood slightly higher than the external pressure (atmospheric pressure) allows the entrance of the sheet-like substance to the inside of the hood. Intrusion of outside air from the air was completely shut off, and superheated steam drying was implemented for the first time.
  • PEEK polyetheretherketone
  • PPS polyphenylene
  • the contact portion between the seal pipe, the sealing bracket roll and the sealing pinch roll has been found to be an obstacle to high speed.
  • a seal material using a brush seal method and a heat-resistant packing material and made mechanical contact with a water seal using condensation of leaked superheated steam. No department.
  • the section where free shrinkage is restricted by the gas-permeable belt having the endless structure since there is almost no outside air inside the special closed hood and evaporation is possible under the atmosphere of the superheated gas, the section where free shrinkage is restricted by the gas-permeable belt having the endless structure. Most of the drying was completed with.
  • the side of the sheet-like material that is supported by the rotating body is inside and outside of 11 o ° c under the high tension of the band compared to the inside and outside of the conventional 10 o ° c.
  • the temperature rises rapidly, rises to a temperature lower than the temperature of the heated gas by 25 ° C or more, and evaporates instantaneously.
  • part of the moisture contained in the sheet-like substance moves rapidly to the belt side, and a heating gas of 100 ° C or more is sprayed on the belt-like surface at a high speed of 5 Om / sec or more.
  • a heating gas of 100 ° C or more is sprayed on the belt-like surface at a high speed of 5 Om / sec or more.
  • the moisture in the sheet-like material evaporates instantaneously directly from the inside of the sheet, passes through the gap of the band-like band, passes through the nozzle-shaped or slit-shaped gas discharge port installed in close proximity to the band-shaped band. Suctioned by blower.
  • the moist water vapor in the belt-like band is cooled by the surface of the sheet-like material at 100 ° C or lower, condensed in the belt-like band, becomes wet, returns to the surface of the sheet-like material, and returns to the sheet-like state. There is no need to re-wet the material surface.
  • the present invention employs a configuration in which heating is performed from the belt-shaped band side (front side), so that moist water vapor evaporated from the sheet-like material stays in the belt-shaped band as in the conventional case. It has never been filled and harmed the evaporation from the sheet-like material surface.
  • the inside of the band is not wetted by the dewed water as in the conventional case, so that a fabric dryer (band dryer) conventionally required to dry the wet band is used. Become useless. Accordingly, the installation space for the belt-shaped band dryer is not required, and the construction cost can be significantly reduced.
  • a large amount of heated gas is circulated and reheated, and the temperature in the hood is always kept at a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more in the case of high-temperature heated and humid air, and superheated
  • the superheated steam is passed through the cross section of the sheet by the steam box and the suction box. Since the sheet temperature was rapidly increased by the condensation heat transfer, there was no condensation in the hood.
  • a cylinder which had to be reheated from the inside as a second-class pressure vessel in the past, is subjected to external impact heating by a high-temperature gaseous body, and is made of thin metal or It can be transported separately with a light structure made of heat-resistant plastic, and can be assembled and installed locally.
  • a light structure made of heat-resistant plastic
  • the present invention is an external heating system mainly based on heat transfer from an outer periphery of a rotating body by impact injection of a high-temperature heating gas of 100 ° C. or higher and partial heat radiation, and its drying mechanism is fundamentally different.
  • a high-temperature heating gas 100 ° C. or higher and partial heat radiation
  • the temperature of the rotating body also rises due to high-temperature gas heating from the outside, and the sheet-like material is indirectly heated from the inside. become.
  • the rotating body (drying cylinder) without internal heating as described above has never existed on the earth.
  • heated gas of 100 ° C or more that is, superheated steam of 100 ° G or more or dry bulb temperature of 80 ° C or more Open-air temperature of 60 ° C or more
  • an atmosphere such as air or a mixed gas of 80% or more of nitrogen gas containing a small amount of solvent gas of 100 ° C or more and 10% or more of water vapor inside and outside, one side is mainly heated externally.
  • a rotatable rotating body, and on the opposite side under high tension, endless structure It is sandwiched by strips, dried quickly while restraining the expansion and contraction of the wet sheet material, and contains hot gas in the hood and water vapor evaporated from the sheet material through the heat-resistant, air-permeable strip.
  • the sheet material can be dried at a high speed of about 6 times or more of the related art and with a required heat amount of about 18 or less and energy saving.
  • FIG. 1 is a side view showing a first embodiment of the drying apparatus of the present invention.
  • FIG. 2 is a side sectional view of FIG.
  • FIG. 3 is a flow chart showing a heating gas circulation system according to the first embodiment of the drying apparatus of the present invention.
  • FIG. 4 is a diagram showing an inlet portion of the sheet-like substance to the hood.
  • FIG. 5 is a diagram showing an outlet of the sheet-like substance with respect to the hood.
  • FIG. 6 is a longitudinal sectional view showing an example of the structure of the rotary cylinder.
  • FIG. 7 is a view taken in the direction of arrows Z-Z in FIG.
  • FIG. 8 is a side view showing a second embodiment of the drying apparatus of the present invention.
  • FIG. 9 is a side sectional view of FIG.
  • FIG. 10 is a flow diagram showing a heating gas circulation system according to the second embodiment of the drying apparatus of the present invention.
  • FIG. 11 is a side view showing a third embodiment of the drying apparatus of the present invention.
  • FIG. 12 is a flow diagram showing a heating gas circulation system according to a third embodiment of the drying apparatus of the present invention.
  • FIG. 13 is a side view showing a fourth embodiment of the drying apparatus of the present invention.
  • FIG. 14 is a side view showing a fifth embodiment of the drying apparatus of the present invention.
  • FIG. 15 is a side view showing a sixth embodiment of the drying apparatus of the present invention.
  • FIG. 16 is a side view showing a seventh embodiment of the drying apparatus of the present invention.
  • FIG. 17 is a side sectional view of FIG.
  • FIG. 18 is a side view showing an example of the indoor arrangement of the drying apparatus according to the seventh embodiment of the present invention, in which a building is cut off on the operation side.
  • FIG. 19 is a cross-sectional view showing an example of the indoor arrangement in the seventh embodiment of the drying apparatus of the present invention, in which a building is cut at a seat exit of a hood.
  • FIG. 20 is a cross-sectional view of the closed hood in the width direction of the central paper machine in the seventh embodiment of the drying apparatus of the present invention.
  • FIG. 21 is a plan view showing an arrangement on a building roof in the seventh embodiment of the drying apparatus of the present invention.
  • FIG. 22 is an overall plan view of the drying apparatus of the present invention including the external combustion type circulating gas heat exchanger.
  • FIG. 23 is an overall sectional view of the drying device of the present invention including the external combustion type circulating gas heat exchanger.
  • FIG. 24 is a graph showing the absolute humidity and the amount of heat required for heat exchange when the drying method of the present invention is performed.
  • FIG. 25 is a Morrie diagram showing the relationship between high-temperature, high-humidity air and superheated steam when the drying method of the present invention is performed.
  • the scope of the present invention is zone A, which implies a superheated steam zone, and zone B of high-temperature, high-humidity air.
  • zone A which implies a superheated steam zone
  • zone B of high-temperature, high-humidity air. The intersection of the extension of absolute humidity and 100% relative humidity indicates the dew point temperature.
  • FIG. 26 shows a case where the drying method of the present invention is applied to a multi-cylinder drying cylinder of a paper machine. It is a temperature distribution figure which shows the temperature distribution in a sheet and an endless breathable band.
  • FIG. 27 is a graph showing the relationship between the bow I tensile strength (DRY) of dry paper (NBCTMP) and the apparent density versus the gas state and impact temperature when the drying method of the present invention is carried out.
  • FIG. 28 is a graph showing the relationship between the tensile strength (DRY) of dry paper (DIP) and apparent density versus gas state and impact temperature when the drying method of the present invention is performed.
  • FIG. 29 is a graph showing the relationship between tensile strength (WET), apparent density, gas state, and impact temperature of dried paper (NBCTMP) when the drying method of the present invention was performed.
  • WET tensile strength
  • NBCTMP impact temperature of dried paper
  • FIG. 30 is a graph showing the relationship between tensile strength (WET) of dry paper (DIP) and apparent density versus gas state and impact temperature when the drying method of the present invention is carried out.
  • WET tensile strength
  • FIG. 31 is a graph showing the relationship between the drying speed, the gas state, and the impact temperature when the drying method of the present invention is performed.
  • FIG. 32 is a graph showing the relationship between the drying speed, the gas state, and the impact speed when the drying method of the present invention is performed.
  • FIG. 33 is a graph showing the relationship between the drying speed, the gas state, and the nozzle opening ratio when the drying method of the present invention is performed.
  • FIG. 34 is a graph showing the relationship between the drying speed, the gas state, and the fabric air permeability when the drying method of the present invention is performed.
  • FIG. 35 is a graph showing absolute humidity and thermal efficiency when the drying method of the present invention is performed.
  • FIG. 36 shows an electron micrograph of a cross section of the sheet obtained by the conventional cylinder drying.
  • FIG. 37 shows an electron micrograph of a cross section of a sheet having a large number of porous portions by superheated steam drying when the drying method of the present invention is performed.
  • FIG. 38 shows an electron micrograph of a cross section of a sheet by heating air drying when the drying method of the present invention is applied.
  • FIG. 1 is a side view showing a first embodiment of a drying apparatus used in the method for drying a sheet-like substance of the present invention
  • FIG. 2 is a side sectional view of FIG. 1
  • FIG. 3 is a diagram of a circulation system of a heating gas
  • FIG. 5 is a diagram showing an inlet portion of a sheet-like substance with respect to a hood having a joint-closed box structure
  • FIG. 5 is a diagram showing an outlet portion of the sheet-like substance with respect to the hood
  • FIG. 6 is a side sectional view showing a rotating body
  • FIG. FIG. 7 is a view taken in the direction of arrows Z—Z in FIG. 6.
  • the drying device for drying the wet sheet material rotates while supporting one surface of the sheet material 35 as shown in DS1 shown in Figs.
  • a plurality of multi-cylinder rotating bodies (rotating cylinders) 1 are in contact with the other surface of the sheet-like substance 35, and rotate the rotating body 1 while sandwiching the sheet-like substance 35 between the rotating bodies 1.
  • Heated gas is blown from the heat-resistant fabric (strip) 36 that moves in synchronism to the fabric 36 that sandwiches the sheet-like substance 35 from the outer periphery of the rotating body 1.
  • a gas outlet (heating gas supply unit) 19 and a suction port 22 are provided.
  • the rotating body 1 and the fabric 36 sandwiching the sheet-like substance 35 are provided inside a hood 1 having a box structure that is hermetically sealed by full-surface joining.
  • the fabric 36 has an endless structure formed in an annular shape.
  • the space in the pocket portion between the rotating bodies 1 is utilized to the utmost, and the upper and lower fabric bricks 3 are formed between each pair of two suction roll rolls (band-shaped rolls) 8. 6 (36A, 36B) and sheet material 35.
  • the drying device DS 1 is composed of an independent mechanical foundation 13 of the paper machine connection building, a sole plate 14 fixed on the mechanical foundation 13 by an anchor port, and a sole plate 14 It has the assembled dryer frame 4.
  • the rotating body 1 is provided inside the dryer frame 4.
  • the rotating body 1 supports the sheet material 35 on its surface (cylinder surface).
  • the rotating body 1 is provided with a rotating shaft (cylinder shaft) 2, and is rotatably supported by rotating body bearings (cylinder bearings, rotating body bearings for the rotating body) 3.
  • the cylinder bearings 3 are installed on the dryer frame 4.
  • a plurality of rotating bodies 1 are provided as shown in Fig. 1, and are arranged in a staggered manner in two upper and lower stages.
  • the rotating body 1 is arranged in a one-stage configuration, and the sheet-like substances 35 are alternately installed upward and downward in each group so that they do not curl. It can be installed, the rotating body 1 can be installed vertically and several steps leftward or rightward, or a mixture of them.
  • the upper rotating body 1 has a canopy hood (gas cap) disposed above the center of the rotating shaft 2 connected to the upper rotating body 1.
  • the canopy hood 15 is supported on the dryer frame 4 by a lifting device 16 (see FIG. 2) so as to be able to move up and down (up and down).
  • the lower rotating body 1 is provided with a canopy hood 15 disposed below the center of the rotating shaft 2 connected to the lower rotating body 1.
  • Each of the lower frames of the canopy hood 15 is supported by a lifting device 16 so as to be vertically movable with respect to the dryer frame 4.
  • Canon hood 15 is composed of heat-resistant panels.
  • the plurality of rotators 1 are provided, and each of the plurality of rotators 1 is arranged in upper and lower two stages.
  • the sheet-like substance 35 is supported by the plurality of rotating bodies 1 and travels from the entrance 60 to the exit 61 in FIG.
  • the fabric 36 includes an upper fabric (upper band-like band) 36 A provided so as to sandwich the sheet-like substance 35 supported by the upper rotating body 1, and a lower fabric 36.
  • the lower fabric (lower band-like band) 36 B provided so as to sandwich the sheet-like material 35 supported by the rotating body 1 on the side.
  • Each of the upper and lower fabrics 36 A and 36 B has an endless structure formed in an annular shape.
  • a suction fabric roll 8 is provided.
  • the suction fabric roll 8 is rotatably supported by a fabric roller bearing (rotating body bearing for a belt-like band) 9.
  • the fabric roll bearing 9 is installed on the dryer frame 4.
  • two suction fabric rolls 8 are arranged for one rotating cylinder 1.
  • the sacrifice abrick roll 8 supports the fabric 36.
  • the rotating body bearing 3 and the fabric roll bearing 9 provided in the hood 17 are provided with a forced circulation system (forced circulation system). (Ring mechanism).
  • the forced circulation system is provided outside the hood 17 at normal temperature, and cools the bearings 3 and 9 by water cooling or a refrigerant system.
  • the forced circulation system circulates the cooled oil and supplies it to bearings 3 and 9.
  • All oil supply pipes and return pipes in the hood of the forced lubrication system have an adiabatic insulation structure insulated by heat-insulating material, and are set to the shortest distance in the hood.
  • the casings of bearings 3 and 9 are water-cooled, the return oil temperature is 98 ° C or less, preferably 90 ° C or less, and a forced cooling device is also provided inside the oil tank to raise the supply oil temperature to 60 ° C. C or less, preferably 50 ° C. or less.
  • the cooled oil may be supplied to the return collecting part of the oil drainage pipe to cool it, and further, an intermediate cooling tank may be provided.
  • the bearings 3 and 9 may have a heat-retaining and water-cooling structure.
  • Each of the upper and lower fabrics 36 A and 36 B has a sheet shape on the upper and lower sides with the suction fabric roll 8 provided between the upper and lower rotating bodies 1 as a detour point. Hand over substance 3 5.
  • the sheet material 35 travels while being alternately sandwiched between the upper and lower rotating bodies 1 and the upper and lower fabrics 36.
  • a fabric roll (band-shaped band roll) 10 is provided at each corner of the hood 1 and a fabric tension roll (band-shaped band roll) 11 is provided at a predetermined position with respect to the fabric roll 10. Is provided.
  • the fabric roll 10, the fabric tension roll 11, and the suction fabric roll 8 support a fabric 36 having an annular endless structure so that it can circulate in the completely sealed hood 17. Have been.
  • the fabric 36 has air permeability, and supports the rotary member 1 so as to sandwich the sheet material 35 therebetween.
  • the fabric 36 has an air permeability of 7,500 GCM (cm 3 / cm 2 / min), that is, a material having air permeability of 12, 50 O m 3 / m 2 / hour or more and heat resistance.
  • the fabric 36 is made of PEEK (polyetheretherketone) or PPS (polyphenylene sulfide).
  • the entire drying part, including the upper and lower canopy hood 15, rotating body 1, fabric 36, suction fabric roll 8 and dryer frame 4 has a thickness of 100 mm, preferably a wall of 150 mm.
  • the ceiling is surrounded by a hood 17 composed of heat-insulating panels with heat resistance of 200 mm or more. Over 100 ° C inside hood 17 The gas atmosphere is set.
  • an evaporating space 80 (see Fig. 3) between the air outlet 19 in the canopy hood 15, the suction inlet 22, and the surface of the rotating body 1 is separated by a distance from 10 to 25 mm inside and outside. ing.
  • the outer peripheral portion of the rotating body 1 and the fabric 36 sandwiching the sheet material 35 are arranged inside the evaporation space 80.
  • a part of the hood 17 is opened and closed during inspection and cleaning.In order to achieve perfect sealing inside the hood, at least one step is formed between the hoods 17 as an example for sealing the contact surface.
  • An electric or pneumatically driven hood opening / closing device 18 is provided, which can be pressure-bonded via a heat-resistant packing such as a silicone sponge.
  • the switchgear 18 may be two double doors or one single door.
  • the rotating body 1 comes into contact with the sheet material 35 on a rotating surface whose surface is finished smoothly.
  • a fabric 36 sandwiching the sheet material 35 between the rotating body 1 and the rotating body 1 is formed on the rotating body 1.
  • a gas outlet (heated gas supply unit) 19 for blowing heated gas is provided.
  • a plurality of the outlets 19 are provided with a plurality of bell mouths provided in parallel with the axis of the rotating body 1 and spaced apart from the surface of the rotating body 1 by about 10 to 25 mm in the axial direction of the rotating body 1.
  • the rotating body 1 is constituted by a plurality of round holes, square holes, or slits, and is arranged at predetermined intervals in the outer circumferential direction of the rotating body 1.
  • the total opening ratio of the blow-out port 19 is set to 1 to 3% in terms of the power consumption of the blower and the economics of the drying speed for the length of the substantially rotating body.
  • the mark is easily attached to the sheet-like substance 35 linearly via the fabric 36 at the time of the impact.
  • the outlet 19 is a multiplicity of box-shaped members having a long and narrow cross section arranged radially with respect to the rotating shaft 2, and is provided parallel to the rotating shaft 2 at a position facing the rotating body 1. Further, between each of the plurality of box-shaped members, a gas inlet (gas outlet, gas outlet) for sucking gas in the evaporation space 80 (hood 17) and exhausting the gas to the outside of the hood 17 is provided. 2) 2 are provided.
  • the gas inlets 22 are arranged at predetermined intervals in the outer circumferential direction of the rotating body 1 and preferably have a slit shape with a bell mouth-shaped cross section. Or, when the outlet 19 is to be made into a semi-circular arc with no integral section, a round hole pipe shall be used.
  • the inlets 22 are arranged in parallel and radially alternately with the rotating shaft 2.
  • the suction port 22 is set to have a total opening ratio of about 5% with respect to the length of substantially the entire width of the cylinder.
  • An air supply box (heated gas supply unit) 20 connected to the air supply box connection duct 21 in the form of a plurality of annular boxes is connected to the outlet 19.
  • the air supply box 20 is arranged in a ring shape at right angles to the cylinder shaft 2 at intervals so as to secure a sufficient suction space.
  • the canopy hood 15 is connected as a reinforcing structure for the air supply box 20.
  • the outlet 19 may be omitted, an integral structure may be provided by a canopy hood 15 and a number of round holes or slit openings may be provided on the inner peripheral surface facing the rotating body 1.
  • the gas inlet 22 may be provided, for example, by penetrating a pipe through the inner and outer peripheral surfaces of the canopy hood 15.
  • An air supply duct 27 penetrating through the hood 17 is connected to the air supply box connection duct 21 via a flexible joint (flexible duct).
  • the duct (the wall of the hood) of the hood 17 where the air supply duct 27 is arranged and the duct are sealed.
  • a pocket air supply box (pocket portion) 6 7 (see FIG. 1) is provided between the two suction roll bricks 8 at positions facing the canopy hood 15 with the rotating body 1 interposed therebetween. And see Fig. 3), which are connected to the air supply duct 27 via a flexible joint.
  • a suction duct (exhaust duct) 24 penetrating through the hood 17 is connected to a suction box (gas discharge part) 23 connected to the suction port 22.
  • the suction duct 24 and the wall of the hood 17 are also sealed.
  • all the rotating bodies 1 and rolls are arranged in a closed hood, but when the existing drying unit is used, the following sealing method is partially used. Can also be adopted.
  • a heat-resistant brush seal such as carbon fiber that restricts gas movement between inside and outside can be removed and inscribed easily.
  • This brush seal preferably has a brush seal structure with a length equivalent to the height of the condensed water in the water, which corresponds to the internal pressure of the hood 17. Get out.
  • the inside of the rib brush which condenses and drains, fills the inside, so that external air enters the hood 17 and a large amount of internal water vapor evaporates. It does not leak.
  • a part of the hood 17 (on the right side in FIG. 1) has an inlet section 60 for introducing the wet sheet material 35 from the outside to the inside of the hood 17. Is provided.
  • an outlet section 61 for drawing out the sheet-like substance 35 from the inside of the hood 17 to the outside is provided. Except for the part 60 and the outlet part 61, all parts are completely sealed by a fully joined closed box structure.
  • Ring pinch rolls (upper and lower rolls) 38 are provided so as to sandwich the sheet material from the front and back surfaces.
  • the sealing pinch roll 38 provided outside the hood 17 can load a linear pressure of 4.903 kN Zm or more.
  • two pairs of substantially symmetrical arcs are provided on the hood 1 side of each of the sealing pinch rolls 38 at the inlet section 60 and the sealing pinch rollers 38 at the outlet section 61.
  • a pinch-hole sealing device (sealing part, sealing mechanism) 44 having a cross section is provided.
  • the pinch roll sealing device 44 is fixed to a sealing frame 45 connected to the outer wall surface of the hood 17.
  • the other end of the pinch roll sealing device 44 is in contact with a sealing pinch roll (upper / lower roll) 38 via a brush seal (heat-resistant sealing material) 46.
  • the brush seal 46 is made of a heat-resistant base or a heat-resistant blanket in which a heat-resistant fiber brush having a diameter of 1 mm or less is planted, and can be easily replaced when it is worn.
  • Materials such as brushes include heat-resistant nylon, petroleum, and nylon.
  • a steam box 43 is provided at the entrance 60 of the hood 17, and a heat-resistant paper feeder having a suction box 40 at a position facing the steam box 43.
  • a sealing blanket (strip for entrance) 39 is provided.
  • the sheet-feeding sealing blanket 39 has an endless structure formed in an annular shape, and is supported by a plurality of rolls 39a to 39c, and a tension (not shown). It is possible to orbit with the appropriate tension by means of the Yon device, guide device and drive device. Among them, the tension roll 39 a and the guide roll 39 b are provided outside the hood 17, and the roll 39 c is provided inside the hood 17.
  • the sealing blanket 39 includes openings provided in the sealing frame 45 and a part of the hood 17, a central slit (a sheet passing slit) 95, and a fabric slit in and out of the sheet passing hood.
  • the hood 17 is circulated so as to extend between the inside and the outside of the hood 17 via a slit on the entrance of the hood for passing the blanket (slit for passing the belt-like band) 96.
  • a steam box 43 is also provided at the outlet 61 of the hood 17, and a discharge box having a suction box 40 is provided at a position facing the steam box 43.
  • Sealing blanket (band-shaped strip for exit) 4 1 is provided.
  • the discharge sealing bracket 41 also has an endless structure formed in an annular shape, and is supported by a plurality of rolls 41a to 41c, and is appropriately controlled by a tension device, a guide device, and a drive device (not shown).
  • the tension rolls 41a and guide rolls 41b are installed outside the hood and the rolls 41c are installed inside the hood.
  • the sealing blanket 41 includes openings provided in the sealing frame 45 and a part of the hood 17, a central slit 95 for a sheet passage hood, and a fabric or fabric or blanket. It is wrapped around the inside and outside of the hood 17 through the slit under the hood entrance and exit (strip for passing the belt-like band) 97 as shown in FIG. Is a heat-resistant sheet provided so as to sandwich the sheet-like substance 35 between the sheet-supplying sealing blanket 39 and the sheet-supplying sealing blanket (band-in strip for entry) 39. An entrance fabric (a belt for entrance) 12 is provided.
  • the fabric for entrance 12 has an endless structure formed in an annular shape, and is supported by a plurality of rolls 12a to 12e, and can orbit with an appropriate tension under a driving device (not shown). ing.
  • the roll 12 d is provided inside the hood 17, and the others are provided outside the hood 17.
  • the entrance fabric 1 2 is the sealing frame 4 5 and an opening provided in a part of the hood 17, a hood opening / closing relo for the sheet passing, a central slit 95, and a fabric or a brick and a blank for passing a blanket and a blank 97, a slit under the doorway 97, the hood 1.
  • the circuit goes around inside and outside of 7.
  • the outlet 61 of the hood 17 is connected to the discharge sealing blanket 4 1 so as to face the discharge sealing blanket 4 1.
  • An outlet fabric (outlet strip-shaped band) 12 provided so as to sandwich the sheet-like substance 35 therebetween.
  • the outlet fabric 12 has an endless structure formed in an annular shape, and is supported by a plurality of tension rolls 12a guide holes 12b, and other 12c, 12d and 12e. Then, it is possible to orbit with an appropriate tension under a tension device, guide device and drive device (not shown).
  • the roll 12 d is provided inside the hood 17, and the other rolls are provided outside the hood 17.
  • the outlet fabric 12 includes openings provided in a part of the sealing frame 45 and the hood 17, a central slit 95 for the hood for sheet passage, and a hood entrance for the fabric and blanket passage. Via the upper slit 96, it is circulated so as to straddle the inside and the outside of the hood 17. And, the sealing blankets 39, 41 installed between the inside and the outside of the hood 17, and the entrance / exit fabric 1 installed across the inside and the outside of the hood 17 2 makes it possible to easily supply and discharge paper to and from the hood 17 by orbiting the sheet-like material 35 while sandwiching the same.
  • the movement of gas between the outside and the inside of the hood 17 at the entrance 60 and the exit 61 is regulated by the fabric 12, pinch opening seal device 44, brush seal 46, sealing pinch roll 38, etc.
  • the seal part (seal mechanism, air shutoff device) is configured. At both ends of the fabric or blanket in the width direction of the sealing device, the heat-resistant brush seal or blanket provided on the sealing frame 45 is extended and sealed, causing leakage of heated gas or leakage. Completely prevent external air leakage.
  • the lower or upper / lower installation of the entire sealing device should be of an up-and-down type.
  • the slit width may be increased and returned to the original slit width after completion, but if the distance is too large, the sheet will not slip tightly during paper passing, as described below, and will slip out and will prevent air leakage.
  • the sealing pinch roll can be sandwiched by a spring and air pressure. Of course, in that case, it is necessary to widen the position of the slit 97 below the fabric entrance / exit for the fabric or fabric and the passage for the blanket to secure sufficient vertical space.
  • the delivery method is that the rope is crossed by the sending carrier sheave and the receiving carrier sheave before the entrance, and first, one of the heat-resistant ropes sandwiching the sheet material above and below the sending side is shifted in the traveling direction, and the sheet material Is temporarily free for a short distance, and then sandwiched by one side of the heat-resistant rope on the receiving side, and both sides of the sheet-like material are sandwiched at the position where the feeding side is completely removed.
  • the sheet is directly pressed by a low press method. Is sandwiched between upper and lower belt-shaped belts and passed. When the paper is passed through the rope before the feed, blow it between the belts with a high-pressure air nozzle.
  • fabric (band-shaped band) 36 is not used in the case of super-thick paper with a thickness of 3 mm or more, use a belt-shaped band for entrance and exit as a measure to seal the hood 17 and pass paper through a carrier rope system.
  • these fabrics band-like bands having a void (mesh, slit, round hole, or the like) that can be used for suction are used.
  • the entrance and exit fabrics 1 and 2 and the feeding blanket 39 enter and exit the superheated steam atmosphere of the hood 17 and bring in air from the outside. However, it is preferable to be solid except for small voids of such a degree.
  • two sets of heat-resistant sheeting blanket 39 and two pieces of fabric for entry / exit reloWer 12 are used at the top and bottom, respectively, to prevent entry of sheet-like substances.
  • the sealing blanket dedicated to paper feeding and discharging is eliminated, Endless fabrics 36 for drying may be wrapped around the outside of the hood 17 to simplify the entrance / exit seal portion.
  • the operation of the sheet material 35 entering the hood 17 will be described with reference to FIGS.
  • the wet sheet-like substance 35 lands on the in / out relo fabric 12 while preventing air from entering through a paper roll or the like.
  • the sheet-like substance 35 passes through the through-hole of the heat-insulating panel, which is the outer wall of the closed hood 17, which is completely blocked from the outside air by the sealing pinch roll 38. 17 Enter inside.
  • the sheet-like substance 35 is removed from the sheet by the suction box 40 while the residual air in the sheet is removed by the steam injected from the steam box 43.
  • the drying device DS 1 is provided outside the hood 17, and processes gas exhausted from the inside of the hood 17 by the gas discharge units 22, 23, and converts the gas into the inside of the hood 17.
  • a gas circulation heating system (gas circulation device) J that supplies the gas again.
  • the gas circulation heating system (gas circulation device, gas circulation heating device) J is provided on the rotating body 1 preferably on the driving side as shown in FIGS.
  • Exhaust screen that removes foreign matter such as fuel 33
  • Exhaust heater circulating gas heat exchanger
  • gas circulation blower which is a heat-resistant blower 25, adiabatic expansion nozzle 26, air supply duct 27, gas scrubber (steam scrubber) 28, gas compressor (steam compressor) 2
  • Pressurized steam pipe 30, steam control valve 3, makeup steam pipe 32, air supply control damper or valve 37, exhaust control damper or valve 42 2 4 and air supply box connection Connect to duct 21 and steam header 100 to circulate heated gas mainly composed of superheated steam. Since the pressure loss at the exhaust screen is large, a large area that can be removed using the entire surface of the hood in the exhaust direction (ceiling, floor, or side wall) May be installed.
  • FIG. 6 is a longitudinal sectional view of the rotating body 1
  • FIG. 7 is a view taken along the line ZZ of FIG.
  • the rotating body (rotating cylinder) 1 includes a rotating body shaft 2 having a rotating body bearing 3, a rotating body segment 7 attached to the outer periphery of the rotating body shaft 2 at substantially equal intervals, and a rotating body segment 7.
  • a rotating body shell 1 ′ that is connected and can be divided in the width direction of the rotating body 1, and a rotating body reinforcing rib 6 that is connected to the inner peripheral surface of the rotating body shell 1 ′ at substantially equal intervals.
  • a reinforcing socket 2a is provided around the rotating body shaft 2.
  • the rotating body 1 is, for example, a metal made of SS or SUS, a heat-resistant synthetic resin, or the like. It is made of light material.
  • the rotator 1 is made of a heat-resistant plastic, glass fiber, aramide fiber, or carbon fiber in a cage structure, and the surface of the rotator 1 is made smooth by using the same film or a Teflon (registered trademark) film.
  • Teflon registered trademark
  • the rotating body reinforcing ribs 6 and the rotating body segment 7 are joined together and fixed with a reamer bolt or the like as a wide integrated structure. Is carried out. After that, it is disassembled and transported to the construction site. When it reaches the construction site and the assembly process is completed, the rotating body shell 1 'is joined to the surface and smooth finished. If there is no transportation problem, the product may be completed at the manufacturing factory instead of the disassembly / assembly structure. Further, a head plate may be attached to the two-axis measurement surface of the rotation # 1.
  • the wet sheet-like substance 35 which was made in the wire part and dehydrated in the press part to a water content of 60 to 50%, was placed at the entrance 60 of the hood 17, which was completely sealed by a heat-insulating panel.
  • the fabric is re-read by the entrance fabric 1 2, and is sandwiched between the paper-feeding sealing brackets 39 by the upper and lower sealing pinch ports 38, and travels to the steam box 43 and the suction box. Between 40, it is rapidly heated by the condensation heat transfer, and the temperature rises sharply.
  • the paper passing method of the grace sheet material 35 depends on the carrier rope method using a tail shutter and a blower, or the mouth press method using an air doctor and a pen cutter.
  • the interior of the hood 17 is set to a gas atmosphere of 100 ° C. or more by the gas circulation heating system J. Further, the gas circulation heating system J controls the gas supply / exhaust balance to the inside of the hood 17, and the pressure inside the hood 17 is several to several 10 mm smaller than the pressure outside the hood 17. It is set high.
  • the sheet-like substance 35 introduced into the hood 17 is sucked and sucked by the suction mechanism of the suction fabric roll 8 into the lower fabric 36B circulating in the hood 17, and is taken out.
  • the entrance is guided to the entrance of the rotating body 1 installed at the lower side of the 60 side.
  • the upper surface of the sheet-like material 35 comes into close contact with the rotating body 1, and the lower surface of the sheet-like material 35 is sandwiched between the lower-stage fabric 36 B and rotates around the rotating body 1 as the rotating body 1 rotates. I do.
  • the sheet-like substance 3 5 becomes the fabric 3 6
  • the sheet-like material 35 is pressed against the rotating body 1 through the fabric tension roll 11 by a tension capable of restraining the drying and shrinking of the sheet-like material 35, and travels while restraining the free shrinkage particularly in the width direction.
  • the sheet-like substance 35 circulating in the canopy hood 15 (that is, the evaporating space 80) while being sandwiched between the rotating body 1 and the fabric 36, toward the outer periphery of the rotating body 1.
  • a heating gas at a temperature of 100 ° C or more is blown at a high speed of 5 Om / sec or more from the blowout port 19 provided at the air conditioner.
  • the heated gas from the outlet 19 is blown onto a heat-resistant fabric 36 with an air permeability of 7,500 CCM or more (125,000 mW / hr or more), and passes directly through the air gap.
  • the sheet material 35 is shock-heated, and the moisture in the sheet is instantaneously vaporized and evaporated (pressure flow) and dried.
  • the sheet-like material 35 is directly heated under the pressure constraint of the fabric 36 and dried by evaporating the water by pressurizing flow from the inside of the sheet.
  • a large number of porous parts are instantaneously formed and become bulky, the softening point temperature of lignin and hemicellulose is reduced in a steam atmosphere, and the physical strength is high and the dimensional stability is good, and the steam atmosphere
  • the number of viable bacteria is greatly reduced by high-temperature heat sterilization in the room, the paper strength expression mechanism of the wet strength agent and the dry strength agent is greatly increased, and the production of sheets with excellent printing characteristics and various other properties is started. Made it possible.
  • the evaporating space 80 inside the heated gas atmosphere of 100 ° C or more was sprayed with superheated gas of 100 ° C or more and evaporated from the sheet material 35.
  • Water vapor is sucked as exhaust gas through the suction port 22 and the suction fabric port 8.
  • the sucked exhaust gas is sent to the gas circulation heating system J.
  • the exhaust gas passes through a suction box 23 and a suction duct 24, and foreign matter such as paper dust is removed by an exhaust screen 33, and is pressurized by a circulation blower 25.
  • the exhaust gas is heated at its outlet by superheated steam from the adiabatic expansion nozzle 26, and most of it passes through the air supply duct 27 and is connected to the air supply box connecting duct 21 and the air supply box. After passing through 20, the sheet material 35 is sprayed from the outlet 19 through the fabric 36. Since there is a certain limit to the heating of the circulating gas temperature by the adiabatic expansion nozzle 26, when the circulating gas is further heated to increase the drying speed, combustion is performed by the exhaust heater 34, which is a circulating gas heat exchanger. Indirect heating using gas or heat medium as heat source Can be. In that case, the adiabatic expansion nozzle 26 is closed.
  • the gas blown from the outlet 19 to the sheet material 35 is obtained by circulating and reheating exhaust gas from the inside of the hood 17 by the gas circulation heating system J.
  • a heating gas of 100 ° C or more is blown onto the fabric 36 at a high speed of 50 m / sec or more, and it passes directly through the space to form a sheet.
  • the material 35 is shock-heated, and the exhaust gas is sucked by the suction fabric roll 8 and reheated by the gas circulation heating system J.
  • the sheet-like substance 35 passing through the first rotating body 1 (that is, the lower rotating body 1 at the inlet 60 side) is sucked by the suction roll brick 8 at the outlet, and the first rotating body Move away from one.
  • the sheet-like substance 35 separated from the first rotating body 1 is again sandwiched between the upper fabric 36A and the lower fabric 36B, and is again held by the upper fabric roll 8 of the upper fabric. It is sucked upward, taken up by the upper fabric 36A, and guided to the inlet of the second rotating body 1 (that is, the upper rotating body 1 on the inlet section 60 side) installed in the upper section.
  • the sheet-like material 35 guided to the inlet of the rotating body 1 installed at the upper part of the inlet section 60 side has one surface (in this case, the lower surface) of the sheet-like material 35 connected to the rotating body 1.
  • the other surface (in this case, the upper surface) of the sheet material 35 is closely attached to the upper fabric 36A.
  • the sheet-like substance 35 runs around the rotation of the rotating body 1 and the rotation of the fabric 36.
  • the sheet-like substance 35 is strongly pressed against the rotating body 1 by the fabric 36 via the lift tension roll 11 and travels while being restrained. At this time, when the sheet-like substance 35 is pressed and restrained, the fabric tension roll 11 is sandwiched by tension capable of restraining the expansion and contraction of the sheet-like substance 35.
  • the fabric tension roll 11 is arranged between the dryers so that the tension is kept substantially constant throughout the entire drying period.
  • a large space may be provided on the entrance side, and it may be located at each of the upper and lower locations.
  • the sheet-like substance 35 circulating in the canopy hood 15 (that is, the evaporating space 80) while being sandwiched between the rotating body 1 and the fabric 36, from the outlet 19 to 10 Heated gas at 0 ° C or more is blown at a speed of 5 O m / sec or more.
  • the gas inside the evaporation space 80 (hood 17) is sucked from the suction port 22, and the sucked gas is sent to the gas circulation heating system J as exhaust gas.
  • the same drying as described above is repeatedly performed for each of the plurality of rotating bodies 1.
  • the sheet-like substance 35 traveling between the plurality of rotating bodies 1 and passing through the last rotating body 1 is guided to the outlet 6 1, and reversely injects the heated gas from the suction zone of the suction fabric roll 8.
  • the sheet 35 is passed to the discharge sealing blanket 4 1, and is advanced while being sandwiched between the exit fabric 12 and the outlet pin 6 1 of the hood 17 by being further sandwiched by the sealing pinch rolls 38. It is carried out more.
  • the heating sheet is blown from the radial outside of the rotating body (rotating cylinder) 1 that supports the sheet-like material 35 toward the fabric 36, so that the wet sheet-like material is obtained.
  • 35 can be efficiently dried mainly by external heating.
  • by blowing the heating gas while sandwiching the sheet-like substance 35 between the rotating body 1 and the air-permeable fabric 36 the expansion and contraction of the sheet-like substance 35 is suppressed, and there is no paper breakage, and mainly the overheating is performed.
  • Shock drying with a heating gas of 100 ° C or more consisting of water vapor makes it possible to produce a porous, bulky, tough and print-friendly sheet by rapid direct moisture evaporation.
  • the hood 17 has a closed structure, it is possible to prevent the occurrence of dew condensation due to local cooling in the hood caused by cold air entering from outside the hood.
  • a part of the steam pressurized by the gas circulation blower 25 is degassed in the gas scrubber 28 to remove mist, foreign matter, and non-condensed gas, and then adiabatically compressed by the gas compressor 29 to increase the pressure. Heated, via the pressurized steam pipe 30 and the exhaust control damper or valve 42 When using superheated steam ⁇ : The weight of steam brought in from the L-part is replenished when heating, moist and air is used. High-temperature, high-humidity air containing steam equivalent to the sum of the weight of steam carried in can be supplied to other processes and used. At the time of startup, for example, the heating gas of the recirculation system can be heated through a part of the adiabatic expansion nozzle 26 as described above.
  • the outlet 19 in the canopy hood 15 is set in the width direction. It is also possible to control the amount of blown gas by dividing each.
  • a control valve is provided in each of the suction zones of the suction fabric roll 8, and the control valve is selected and opened / closed, thereby selecting each of the upper and lower rotating bodies 1 and selecting the seat.
  • surplus gas of 100 ° C. or more including water vapor evaporated from the sheet material 35 can be reused as a heat source of another device. That is, as a drying heat source for a coating machine or other paper machine, a low-pressure blower such as a turbo blower, etc., through a plate heat exchanger with low pressure loss and a low-flow duct for heating the outside air. In the air.
  • surplus gas may be supplied to an indirect pressure-resistant heat exchanger to generate and use low-pressure steam.
  • the surplus gas may be supplied to a condensate steam turbine prime mover (or a generator) to recover power in the vacuum stage.
  • the low-pressure steam may be pressurized by a gas compressor 29 to store heat as saturated water in a water vapor accumulator, and supplied as low-pressure steam according to peak demand from another process.
  • the sensible heat of the excess steam is 83.9% of the calorific value of the boiler fuel, and the actual consumed fuel calorific value is subtracted.
  • the required calorie is actually 1, 2 or 7% compared to the conventional high-pressure vessel drying cylinder drying method of 5, 2 36.8> ⁇ 10 3 KJ / BD paper.
  • the circulating gas was reheated by the gas circulation heating system J.
  • a dry bulb temperature of 100 ° C or more, 80% or more of nitrogen gas and 5% of internal and external water vapor A mixed gas of solvent gas and oxygen can be used. Since the mixed gas with a dry bulb temperature of 80 ° C or more, which roughly corresponds to the water vapor and solvent gas brought into the hood 17 by the wet sheet-like substance 35, becomes excessive, the gas in the gas circulation heating system J
  • the exhaust gas is exhausted to the outside of the hood 17 by means of an exhaust gas control valve or valve 42, and the solvent gas is condensed and separated from the water vapor. In addition, there is no explosion accident due to solvent, etc., and drying can be performed with peace of mind.
  • the sheet-like material 35 may be inserted in a San-Germanic manner and run.
  • paper instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, paper may be supplied / discharged by fabrics 36A and 36B, in which case there is no paper breakage. Become. ⁇ 2nd Embodiment >>
  • FIG. 8 is a diagram of a drying device DS2 according to the second embodiment as viewed from a side.
  • FIG. 9 is a side sectional view of FIG.
  • FIG. 10 is a diagram of a circulation system of a heating gas in the drying device.
  • the drying device DS 2 is provided between a rotating body (rotating cylinder) 1 that rotates while supporting one surface of the sheet-shaped material 35 and a rotating body 1 that contacts the other surface of the sheet-shaped material 35.
  • a gas permeable fabric 36 that moves in synchronization with the rotation of the rotating body 1 while sandwiching the solid material 35, and an outlet that blows heated gas from the radial outside of the rotating body 1 toward the fabric 36 1 and a suction port 22 are provided.
  • a plurality of rotating bodies 1 are arranged in upper and lower two stages.
  • the fabric 36 includes an upper fabric 36 A of an endless structure that circulates inside the hood 17 so as to sandwich the sheet material 35 supported by the upper rotating body 1 and a lower rotating body 1. It has a lower fabric 36B of an endless structure that circulates inside the hood 17 so as to sandwich the supported sheet-like substance 35 therebetween.
  • a canopy hood 15 which forms an evaporation space 80 with the rotating body 1 disposed above the center of the rotating shaft 2 connected to the upper rotating body 1 is formed on each of the upper rotating bodies 1. Is provided. Similarly, the lower rotating body 1 has a canopy that forms an evaporation space 80 with the rotating body 1 disposed below the center of the rotating shaft 2 connected to the lower rotating body 1. Food 15 is provided for each.
  • the canopy hood 15 is composed of heat-resistant panels.
  • the canopy hood 15 is divided into several parts on the left and right (in the actual example, it is divided into two parts) in order to increase the impact range angle in the narrow hood 17 and at the same time improve the elevating property and facilitate the adjustment of the distance to the rotating body 1.
  • the right and left and the center can be raised and lowered independently by the lifting device 16.
  • each of the canopy hoods 15 is divided into arbitrary sections, and the divided canopy hoods can be independently lifted and lowered by the lifting / lowering device 16 so as to rotate with the canopy hoods 15.
  • the size of the evaporation space 80 formed with the body 1 can be arbitrarily set.
  • the evaporation space 8 By arbitrarily setting the size of the space 0, it is possible to easily change the drying conditions for the sheet material 35, thereby improving the quality and energy saving of the sheet material 35. be able to.
  • each of the plurality of rotators 1 are provided, and each of the plurality of rotators 1 is arranged in upper and lower two stages.
  • a fabric roll 8 ′ is provided between the top and bottom of the rotating body 1.
  • the fabric roll 8 ′ is rotatably supported by a fabric roll bearing 9.
  • each of the suction fabric rolls 8 is arranged only in the entrance and exit relo of the hood 17 respectively.
  • an inlet portion 60 and an outlet portion 61 of the sheet-like material 35 with respect to the inside of the hood 17 are provided, respectively.
  • Each of the inlet section 60 and the outlet section 61 is provided with a seal section (seal mechanism) for suppressing the movement of gas between the outside and the inside of the hood 17 described with reference to FIGS. ing.
  • a suction fabric box 50 is provided between the upper rotating body 1 and the lower rotating body 1.
  • the suction fabric box 50 is provided with two sheets so that the sheet-like material 35 traveling between the upper rotating body 1 and the lower rotating body 1 is delivered and opposed to the front and back surfaces thereof. Are provided.
  • the exhaust connection duct 49 ' is connected to the suction duct 24 via a flexible joint.
  • the gas circulation heating system J of the drying device DS 2 is provided on the drive side of the rotating body 1 as shown in FIGS. 10, 22 and 23 to remove foreign matter such as mist and paper powder in the exhaust gas.
  • Exhaust screen 33 multiple circulating gas heat exchangers 34 using heat gas such as high temperature exhaust gas from a hydrogen gas turbine using a combustion gas or a heat medium such as hydrogen gas fuel and oxygen, gas circulation blower 25 , Adiabatic expansion nozzle 26, air supply duct 27, gas scrubber (steam scrubber) 28, gas compressor (steam compressor) 29, pressurized steam tube 30, steam control valve 31, makeup steam It is equipped with a pipe 32, an air supply control damper or van 37, an exhaust control damper or valve 42, and the suction duct 24 and the air supply box connecting duct 21 and the steam header 10 described above, respectively. Connect to 0 and steam Circulate.
  • the rotating body 1 ⁇ suction fabric roll 8 force The surface in contact with the canopy hood 15 and the hood 17 has a labyrinth structure, a felt surface or a brush surface, etc. Prevent external air from entering the hood 17 or a large amount of internal water vapor from flowing out through the heat-resistant seal mechanism.
  • the wet sheet-like substance 35 which was made with one part of wire and pre-dehydrated with a press part to a water content of 50 to 60%, was introduced into the hood 17 from the inlet 60, and then sucked. Sucked by fabric roll 8. As shown in FIG. 8, the sheet material 35 is first adsorbed on the lower fabric 36 B circling inside the hood 17 and guided to the lower rotating body 1. The sheet-like substance 35 guided to the lower rotating body 1 is blown with heated gas from the outlet 19 while being sandwiched between the outer peripheral surface of the rotating body 1 and the lower fabric 36 B. Can be
  • the sheet-like substance 35 that has traveled while being supported by the lower rotating body 1 eventually separates from the lower rotating body 1. Then, it passes between the two suction fabric boxes 50 and is passed to the upper rotating body 1.
  • the sheet material 35 passed to the upper rotating body 1 travels while being sandwiched between the upper rotating body 1 and the upper fabric 36A, and is subjected to the same drying treatment as described above.
  • the gas inside and outside of 100 ° C including water vapor evaporated from the sheet material 35 by spraying the heated gas from the blowout port 19 is discharged into the canopy hood 15 (in the evaporation space 80). It is sucked through the suction port 22 and the suction fabric box 50. The sucked exhaust gas is circulated and reheated by the gas circulating heating system J, and then supplied from the outlet 19 to the inside of the regeneration hood 17.
  • the upper and lower stages of the free-running sheet-like material 35 are respectively disposed.
  • a suction fabric box 50 that comes into contact with the fabric 36 with a smooth frame via the fabrics 36 A and 36 B.
  • Exhaust gas can be sucked from the gaseous substance 35.
  • the sheet-like substance 35 may be inserted in a sandwich to run.
  • paper instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, paper may be supplied / discharged using fabrics 36A and 36B, in which case there will be no paper breakage. .
  • FIG. Fig. 11 is a side view showing an embodiment in which the rotating body (rotating cylinder) 1 is installed as a two-stage type
  • Fig. 12 is a circulation diagram of a heated gas.
  • the description of the same or equivalent components as those of the above-described embodiments will be simplified or omitted.
  • the drying device DS 3 includes a plurality of rotating bodies 1 installed in upper and lower two stages. Assemble the dryer frame 4 on the sole plate 14 fixed by anchor bolts on the independent machine foundation 13 of the paper machine connection building, and install the required number of rotating bodies 1 with the rotating shaft 2 and the rotating body bearings 3 respectively.
  • a multi-cylinder type rotating body is installed, it is advantageous to arrange the upper and lower two stages in a staggered manner as shown in this embodiment in order to effectively use the factory space.
  • a canopy hood 15 composed of a heat-resistant panel is placed on the upper rotating body 1 above the center of the rotating shaft 2 and below the center of the rotating shaft 2 on the lower rotating body 1. It is installed on the dryer frame 4 so that it can move up and down.
  • a square hood 47 is provided between the upper and lower sides of each rotating body 1 with an endless fabric 36 extending from the canopy hood 15 to form a flat evaporation chamber.
  • a second heating gas that blows a heating gas to the front and back surfaces of the sheet-like substance 35 that travels between the rotating body 1 installed on the upper stage and the rotating body 1 installed on the lower stage by the square hood 47.
  • a supply unit is configured.
  • one suction-fabric roll 8 is installed on the dryer frame 4 with a fabric roll bearing 9 for each of the entrance and exit re-rolls of the hood 17.
  • hood 17 composed of heat insulating panels, A hood opening / closing device 18 is installed, and it is completely sealed except for the entrance and exit of the sheet material 35.
  • a box-shaped box-shaped hood with an outlet 19 and an inlet 22 (each with a round hole or a slit) separated by a distance of ⁇ 25 mm, and a side that can be opened and closed to access the endless fabric 36 4 and 7 are arranged in a horseshoe shape, respectively, and in the canopy hood 15, a plurality of annular boxes are connected directly to the air supply box connection duct 21 by being directly connected to the air outlet 19.
  • the air box 20 is installed at an interval to secure a sufficient suction space, and the air supply duct 27 is connected to the air box connection duct 21 via a flexible joint on the drive side.
  • a plurality of triangular box-type air supply boxes 48 connected directly to the air outlets 19 and connected to the air supply connection ducts 49 respectively to secure sufficient suction space
  • the air supply duct 27 is connected to the air supply connection duct 49 on the drive side via a flexible joint.
  • the rotating bodies 1 and rolls are arranged in a closed hood.
  • the following sealing method may be partially adopted.
  • the surface where the rotating body 1 ⁇ the suction roll brick 8 comes into contact with the canopy hood 15 and the hood 17 is a heat-resistant sealing mechanism such as a labyrinth structure and a felt surface or a brush surface described in (0700). Prevent the outside air from entering the hood and the large amount of evaporated water vapor from flowing out through the hood.
  • the wet sheet-like material 35 which is made with a wire part and dehydrated to a water content of 60 to 50% with a press pad, is a hood 17 that is completely sealed by heat-insulating panels. It is re-read by 1 2, and is sandwiched between the paper-feeding sealing blanket 39 by the upper and lower sealing pinch openings 38, and moves between the steam box 43 and the suction box 40. It is rapidly condensed and heated, and is taken up by the lower fabric 36 B, which first passes through the lower fabric roll 10, according to the suction zone of the suction roll brick 8 circling in the closed hood.
  • the sheet material 35 is sandwiched between the rotating body 1 installed at the lower entrance side and the fabric 3 6 A coming down through the upper fabric roll 10, It circulates along the rotating body 1 inside the first canopy hood 15 each having an outlet 19 and an inlet 22, and the upper and lower surfaces of the sheet-like material are tensioned while being sandwiched by upper and lower fabrics 36. It is strongly pressed to the rotating body 1 surface via the roll 11 and dried under restraint.
  • the sheet-like substance 3 5 passing through the first rotating body 1 is, while being sandwiched between the two fabrics 36, a substantially hood-shaped square hood 4 having an outlet 19 and an inlet 22.
  • a substantially hood-shaped square hood 4 having an outlet 19 and an inlet 22.
  • the outlet 19 and the inlet 22 were respectively With the horseshoe-shaped arrangement that is continuous with the second canopy hood 15 that has the second canopy hood 15, the second dried body 1 installed at the upper stage is reached again, and the same drying as described above is repeated.
  • the sheet-like substance 35 coming out of the last rotating body 1 is taken by the upper fabric 36 A by the suction belt of the suction fabric roll 8, leaves the rotating body 1, and is discharged at the hood 17 outlet. It is led by the paper sealing blanket 4 1, is sandwiched between the outlet fabric 12, and proceeds, and the liquid material 35 is removed from the upper fabric 36 A by the suction box 40. A nip pressure is applied to the upper and lower sealing pinch outlets 38 to prevent air intrusion and carry out the drying hood to the outside.
  • the upper and lower endless fabrics 36 also leave, circling the upper and lower fabric rolls 10 respectively, and return to the entrance of the hood 7 again. Repeat the above drying cycle.
  • Evaporation surface of horseshoe-shaped cross-section where the substantially semi-cylindrical surface on the rotating body 1 and the substantially flat surface on its extension are continuous.
  • the sheet-like material 35 sandwiched between the) is vaporized from the sheet-like material 35 by spraying with a high-speed heating gas of 150 ° C or more from both sides in a plane from the outer periphery on the semi-cylindrical surface.
  • the exhaust gas inside and outside of 130 ° C is sucked through the suction port 22 in the canopy hood 15 and the square hood 4 7 and the suction fabric roll 8, and the suction box in the hood 17
  • the pressure is increased by the gas circulation blower 25, and at the outlet thereof, the exhaust heater 34 is preferably used.
  • FIG. 13 is a side view showing an embodiment of the downward arrangement when the multi-cylinder rotary cylinder 1 is installed as a single-stage type.
  • the description of the same or equivalent components as those in the above embodiments will be omitted or simplified.
  • the drying device DS 4 includes a plurality of large-diameter rotating bodies 1 each in a group, and a group in which the entrance of the sheet is directed upward and a group in which the seat is directed downward. It has a one-stage structure arranged horizontally.
  • Each of the rotating bodies (rotating cylinders) 1 is installed on a dry frame 4 by a rotating shaft 2 and a rotating body bearing 3.
  • Each of the rotating bodies 1 is provided with a canopy hood 15 composed of a heat-resistant panel at an upper portion below the center of the cylinder shaft 2 and at a lower portion above the center.
  • Canopy feed 1 5 is a lifting device
  • the one rotating body 1 is provided with a suction fabric roll 8 connected to two suction ducts 24 at a position close to the rotating body 1 and provided under the dryer frame 4 in a downward arrangement. In the upward arrangement, it is installed on the dryer frame 4.
  • an air supply box 20 having a hot gas outlet 19 and an exhaust gas inlet 22 is provided on the opposite surface of the suction fabric roll 8.
  • Fig. 13 shows only the group with the entrance of the sheet material facing downward even if the sheet material breaks, which is easy to discharge below.
  • a closed hood 17 composed of insulating panels and a hood opening and closing device 18 for inspection and cleaning are installed, respectively. Except for the inlet part 60 and outlet part 61 of the solid substance 35, it is completely sealed.
  • the difference from the other embodiments is that since there is no rotating body 1 at the bottom in the single-stage arrangement, there is preferably only an endless fabric 36 B for feeding and discharging the sheet-like material orbiting by the fabric roll 10. is there. If there is no danger of running out of paper with thick paper, etc., the lower end sheet feeding and discharging endless fabric 36B can be omitted.
  • the wet sheet-like material 35 made by one part of wire and dewatered by a press part to a water content of 60 to 50% is used for the entrance at the entrance 60 of the hood 17 which is completely sealed by a heat insulating panel. It is re-read by the blanket 1 2, and is moved between the sealing blanket 39 for re-feeding by the upper and lower sealing pinch rolls 3 8, and rapidly condensed between the steam box 4 3 and the suction box 40. It is heated and taken up by the fabric 36 coming up from the lower level by the suction rolls 8 rotating in the closed hood 17 and guided to the entrance of the rotating body 1 installed on the entrance side. .
  • the sheet-like substance 35 guided to the inlet of the rotating body 1 is sandwiched between the fabric 36 A descending from the upper stage, is sucked by the suction fabric roll 8, and one of the two is rotated by the rotating body 1.
  • Surface The other surface of the sheet material 35 is pressed against the rotating body 1 via the fabric tension roll 11 and dried under constraint.
  • the sheet-like substance 35 passing through the first rotating body 1 is separated from the rotating body 1 and is taken up again by the second suction fabric roll 8 on the lift brick 36 A, preferably in the lower stage. Drying is promoted under the restraint of hot gas from the air supply box 20 having the outlet 19 and the inlet 22 between the discharge fabric 36B and the second rotation. After reaching the entrance of the rotating body 1 and separating from the paper feeding / discharging fabric 36 B, the same drying is repeated, and the sheet-like substance 35 exiting the last rotating body 1 is replaced with a suction fan. At the hood exit, taken by the brick opening 8, it is put between the discharge sealing blanket 4 1 and the exit fabric 12, and sealed by the upper and lower sealing pinch rolls 3 8 Drying hood 17 It is carried out from the outlet.
  • the sheet-like substance 35 may be inserted in a sandwich and run.
  • paper instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, paper may be supplied / discharged by using fabrics 36A and 36B, in which case there is no paper breakage. Become.
  • FIG. 22 is a plan view showing a gas circulation heating system J using an external heat source such as steam or a heat medium or combustion gas used in each of the above-described embodiments, that is, a circulation gas heat exchanger 34, and FIG. FIG.
  • a circulation gas heat exchanger 34 the gas that has passed through the exhaust screen 33 from the suction duct 24 is used as a circulating gas heat exchanger 3 4 as a circulating heating gas inside and outside 130 ° C by a gas circulating blower 25. Supplied to the low-temperature side outer periphery where sufficient thermal expansion margin is secured.
  • the circulating gas is circulated to the outside by a circulating gas heat exchanger 34 having a fixed high-temperature side in a combustion chamber with a combustion gas circulating fan 51 and a gas or heavy oil combustion external combustion device having an economizer 52. And then reheated to 100 ° C or higher, and supplied to the air supply box 20 via the air supply duct 27. Since the temperature of the combustion chamber is high, the thermal expansion allowance of the indirect heat exchanger should be carefully considered, and the structure of the circulating heating gas side and the combustion gas side should be separated so that the combustion gas and the circulating heating gas do not leak and mix. O
  • FIG. 14 is a diagram of a drying device DS5 according to the fifth embodiment as viewed from the side.
  • description of the same or equivalent components as those in the above-described embodiment will be omitted or simplified.
  • the drying device DS5 is in contact with a rotating plate (rotating body) 55 that rotates while supporting one surface of the sheet-like material 35, and contacts the other surface of the sheet-like material 35 with the rotating plate 55.
  • the air-permeable fabric 36 moves in synchronism with the rotation of the rotating plate 55 while sandwiching the sheet-like substance 35 between itself and the fabric 36 from the outer circumferential direction of the rotating plate 55.
  • the fabric 36 includes an upper fabric 36 A of an endless structure that circulates inside the hood 17 so as to sandwich the sheet-like substance 35 supported by the upper rotating plate 55, and a lower rotating plate 55. It has a lower fabric 36B of an endless structure that circulates inside the hood 17 so as to sandwich the sheet-like material 35 supported by the cabinet 55.
  • the endless rotating plates (strips) 55 are supported by a number of rotating plate rolls 56, and are arranged in a plurality of arcs in two upper and lower stages.
  • the rotating plate roll 56 is preferably provided with a flange to prevent the rotating plate 55 from coming off, and is mounted on the dryer frame 4 by a rotating plate roll shaft and a rotating plate opening bearing.
  • the rotary plate shaft of the terminal of the arc-shaped running portion (the straight running portion) is fixed via a rotating plate meandering adjusting device and a rotating plate tension adjusting device. You.
  • the rotating plate 55 is driven by the rotating plate roll 56 or by driving the fabric roll 10 to rotate the fabric 36 that circulates around its outer periphery in synchronization.
  • Each of the upper rotating plates 55 has a canopy hood 15 disposed above the center of the upper rotating plate 55 to form an evaporation space 80 with the rotating plate 55. Is provided.
  • the lower rotating plate 55 has a canopy hood 1 which forms an evaporation space 80 with a rotating plate 55 arranged below the center of the lower rotating plate 55. 5 are provided respectively.
  • the canopy bead 15 is composed of a heat insulating panel and has an outlet 19 and an inlet 22.
  • the canopy hood 15 is divided into several parts on the left and right (in this example, two parts) in order to increase the range of impact within the narrow hood 1 ⁇ and simultaneously improve lifting and lowering and facilitate the adjustment of the distance to the rotating plate 55.
  • the right and left and the center can be raised and lowered independently by the lifting device 16.
  • the rotating body is a cylindrical rotating body
  • the shape of the canopy hood is also limited to an arc shape
  • the rotating body is a rotating plate
  • the distance adjustment is extremely small.
  • each of the canopy hoods 15 is divided into arbitrary sections, and the divided canopy hoods 15 can be moved up and down independently by the lifting / lowering device 16, so that the canopy hoods 15
  • the size of the space of the evaporation space 80 formed between the rotating space 55 and the rotating plate 55 can be set arbitrarily.
  • the drying conditions for the sheet material 35 can be easily changed by arbitrarily setting the size of the evaporation space 80, so that the quality and energy saving of the sheet material 35 are improved. Can be achieved.
  • each of the plurality of rotating plates 55 is arranged in two upper and lower stages.
  • a fabric roll 8 ′ is provided between the upper and lower portions of the rotating plate 55.
  • the fabric roll 8 ′ is rotatably supported by a fabric port bearing 9.
  • each of the sacrifice brick rolls 8 is arranged only at the entrance / exit relo of the hood 17 respectively.
  • hoods 17 each composed of heat insulating panels are provided, and the inlets 60 of sheet-like substances 35 are provided. Except for the inlet / outlet section 61, make it completely sealed.
  • Each of the inlet section 60 and the outlet section 61 is provided with a seal section (seal mechanism) for suppressing gas transfer between the outside and the inside of the hood 1 described with reference to FIGS. I have.
  • an electric or pneumatically driven hood opening / closing device 18 that can be completely sealed with a surface contact seal with a step between each other will be installed.
  • a suction fabric box 50 is provided between the upper rotary plate 55 and the lower rotary plate 55.
  • the suction box 50 is opposed to the front and back sides of a position where the sheet-like substance 35 traveling between the upper rotating plate 55 and the lower rotating plate 55 is transferred. Like two Are provided.
  • the exhaust connection duct 49 ' is connected to the suction duct 24 via a flexible joint.
  • the gas circulation heating system J of the drying device DS5 is provided on the drive side of the rotating plate 55 as shown in Figs. 10, 22, and 23 to remove foreign matter such as mist and paper dust during exhaust.
  • the heating gas is circulated by connecting to the steam header 100.
  • the rotating plate roll 56 and the suction fabric roll 8 are provided on the surface in contact with the hood 17 through a labyrinth structure or a sealing mechanism such as a felt surface or a brush surface described in detail in (2007). Prevent outside air from entering the hood 17 or a large amount of internal vaporized steam.
  • the wet sheet-like material 35 which was made with a wire part and preliminarily dehydrated to a water content of 50 to 60% with a press part, was placed inside the hood 17 from the inlet 60 as shown in Fig. 14. After being introduced, first, it is adsorbed by the suction fabric roll 8 to the lower fabric 36 B orbiting inside the hood 17, and is guided to the lower rotating plate 55. The sheet-like substance 35 guided to the lower rotary plate 55 is sandwiched between the outer peripheral surface of the rotary plate 55 and the lower fabric 36B, and the heated gas is discharged from the outlet 19. Is sprayed.
  • the sheet-like substance 3 5 traveling while being supported by the lower rotating plate 55 becomes At the outlet of the lower rotary plate 55, the lower suction fabric box 50 sucks the lower fabric 36 B and separates it. Then, the upper fabric 36 A is sucked by the upper suction fabric box 50 and transferred to the upper rotating plate 55.
  • the sheet material 35 transferred to the upper rotating plate 55 travels while being sandwiched between the upper rotating plate 55 and the upper fabric belt 36 A, and the same drying as described above. Processed.
  • the gas at 130 ° C and outside including the water vapor evaporated from the sheet-like substance 35 by spraying the heating gas from the blowout port 19, is discharged into the canopy hood 15 (in the evaporation space 80).
  • the sucked exhaust gas is circulated and reheated by the gas circulating heating system J, and then supplied from the outlet 19 to the inside of the hood 17 again.
  • the position of the rotary plate 55 can be set freely, so that the restriction period of the free contraction by the lift brick can be maintained longer than in the case of the rotary cylinder. Therefore, the suction brick box 50 becomes shorter, and the canopy hood 15 and the evaporation space 80 can be set longer.
  • a dedicated air supply connection duct 49 may be provided in the pocket portion.
  • the upper and lower rotating plates 55 of the free-running sheet material 35 are provided between the rotating plate 55 arranged in the upper stage and the rotating plate 55 arranged in the lower stage.
  • a suction fabric box 50 which comes into contact with the fabric 36 with a sliding frame via the fabrics 36 A and 36 B, and the suction fabric box 50 is used to form a screen.
  • exhaust gas is sucked from the traveling sheet material 35 and sent to the circulation heating system J for reheating and reuse.
  • the sheet-like material 35 may be inserted in a sandwich and run.
  • paper may be supplied / discharged by using fabrics 36A and 36B, in which case there is no paper breakage.
  • FIG. 15 is a side view showing an embodiment of the downward arrangement when the multi-cylinder rotary plate 55 is installed as a single-stage type.
  • the description of the same or equivalent components as those in the above-described embodiments will be omitted or simplified.
  • the drying device DS 6 includes a plurality of large-diameter rotating plates 55 in groups of several, each having a group in which the entrance and exit of the sheet-like substance are directed upward and a group directed downward. It has a one-stage structure that is arranged in the horizontal direction as appropriate.
  • the endless rotating plate 55 is supported by a number of rotating rolls 56, and a plurality of rotating plates are arranged in an arc at one stage.
  • the rotating plate roll 56 is preferably provided with a flange, and is set on the dryer frame 4 by a rotating plate roll shaft and a rotating plate roll bearing.
  • the rotating plate roll shaft 58 at the end of the arc-shaped traveling portion is fixed via a rotating plate meandering adjusting device and a tension adjusting device.
  • a canopy hood 15 which forms an evaporation space 80 with the rotating plate 55 is located above the center of the rotating plate roll axis, downward at the top, upward at the bottom, It is installed on the dryer frame 4 so as to be able to move up and down via a lifting device 16.
  • the canopy hood 15 is composed of a heat insulating panel and has an outlet 19 and an inlet 22.
  • One set of rotating plates 55 has two suction fabric rolls 8 connected to the suction ducts 24 at positions adjacent to the rotating plates 55, respectively. It is provided below, and is installed on the dryer frame 4 in the upward arrangement.
  • an air supply box 20 having a hot gas outlet 19 and an exhaust gas inlet 22 is provided on the opposite surface of the suction fabric roll 8.
  • Fig. 15 shows only the group with the entrance of the sheet material facing downward even if the sheet material breaks, which is easy to discharge below.
  • hoods 17 each composed of heat insulating panels, and sheet-like substances 3 5 Except for the inlet part 60 and outlet part 61, it is completely sealed.
  • an electric or pneumatically driven hood opening / closing device 18 that can be completely sealed with a surface contact seal with a step between each other will be installed.
  • the difference from the other embodiments is that, since there is no rotating plate 55 at the bottom in the single-stage arrangement, preferably there is only an endless fabric 36 for feeding and discharging sheets that are circulated by the fabric roll 10. It is.
  • the end sheet fabric 36 for sheet feeding and discharging at the bottom can be omitted.
  • the dehydrated, wet sheet-like material 35 made by a wire part and dewatered to a water content of 60 to 50% by a press part is an inlet of a hood 17 that is completely sealed by a heat insulating panel.
  • the entrance blanket 1 2 was moved between the upper and lower sealing pinch rolls 3 8, sandwiched between the re-feeding sealing blanket 39 and steam pox 43.
  • the paper is rapidly condensed and heated between the box 40 and is closed by the suction fabric roll 8 circling in the closed hood 1 1.
  • the sheet-like substance 35 passing through the first rotating plate 55 is separated from the rotating plate 55 and taken up by the fabric 36A, and is preferably connected to the lower feeding / discharging fabric 36B. Drying is accelerated by the high-temperature gas from the air supply box 20 having the outlet 19 and the suction port 22, and the drying is promoted under the constraint, and reaches the inlet of the second rotary plate 55. Separated from the feeder fabric 36B, the same drying was repeated, and the sheet-like substance 35 coming out of the last rotating plate 55 was removed by the suction roll 8 and the hood 1 was removed. At the exit 7, get on the sheet-discharge sealing blanket 4 1 and sandwich it between the exit-use fabric 12 and seal it with the upper and lower sealing pinch rolls 38. Is done.
  • the sheet-like substance 35 may be inserted in a sandwich and run.
  • paper may be supplied / discharged by fabrics 36A and 36B, in which case there will be no paper breakage.
  • FIG. 16 is a side view showing an embodiment in which the rotating body (rotating cylinder) 1 is installed as a two-stage type
  • FIG. 17 is a side sectional view of FIG.
  • the description of the same or equivalent components as those of the above-described embodiments will be simplified or omitted.
  • the drying device DS7 includes a plurality of rotating bodies 1 installed in upper and lower two stages. Assemble the dryer frame 4 on the sole plate 14 fixed with anchor bolts on the independent machine foundation of the paper machine building, and install the required number of rotating bodies 1 with the rotating shaft 2 and rotating body bearings 3 respectively.
  • a multi-cylinder type rotating body it is advantageous to arrange the upper and lower two stages in a zigzag pattern as shown in this embodiment in order to effectively use the factory space.
  • the present embodiment is an example in which an existing paper machine is remodeled by utilizing the same, and is arranged in a narrow space.
  • the canopy hood 15 moves up and down via the lifting device 16 on the upper rotating body 1 above the center of the rotating shaft 2 and on the lower rotating body 1 below the center of the rotating shaft 2. Install on dryer frame 4 if possible. Between the upper and lower sides of each rotating body 1, a liquid material 35 is sandwiched between fabrics 36A and 36B having an endless structure on the extension of the cano bead 15. The fabrics 36A and 36B are provided so as to orbit the inside and outside of the hood 17 via the inlet 60 and the outlet 61.
  • a plurality of fabric rolls 10 are installed on the seal section frame 92 by a spring roll bearing 9 at the entrance and exit re-rolls of the hood 17, respectively, and as described with reference to FIG. 4 and FIG.
  • the arrangement of the entrance of the hood shown in Fig. 16 is an inclined arrangement to prevent bending of the wet sheet-like material 35 as much as possible in order to prevent interlayer thinning due to cardboard or impregnation, but it is not necessarily restricted. , It can be freely arranged in horizontal or reverse inclination.
  • a set of sealing devices installed on the lower side may be of a vertically moving type.
  • a hood 17 composed of heat insulating panels and a hood opening and closing device 18 for inspection and cleaning are installed. Then, it is completely sealed except for the entrance and exit of the sheet material 35.
  • the wet sheet-like material 35 made by the wire part and dehydrated to 60 to 50% moisture by the press part is a sandwich structure at the entrance of the hood 17 that is completely sealed by a heat insulating panel.
  • the lead is sandwiched between the placed endless fabrics 36 A and B, and is sandwiched between the upper and lower sealing pinch rolls 38, and rapidly moves between the steam box 43 and the suction box 40.
  • the fabric rolls 10 that are condensed and heated and circulate in the closed hood 17 reach the rotating body 1 inlet provided on the lower inlet side. Next, it circulates along the rotating body 1 in the first canopy 15 having the outlet 19 and the inlet 22, and the upper and lower surfaces of the sheet-like material are sandwiched between the upper and lower fabrics 36. While rotating, it is strongly pressed to the rotating body 1 surface via the fabric tension roll 11 and dried under constraint.
  • the sheet-like substance 3 5 that tightened the first rotating body 1 is a free evaporation surface consisting of almost flat surfaces while being sandwiched between the exhausted fabrics 36, and each of the upper and lower sheets under high-speed high-temperature gas atmosphere.
  • the endless fabric is dried further between 36 ⁇ , 36 ⁇ and then has a horseshoe-shaped arrangement with a second canopy hood 15 with outlet 19 and inlet 22 Then, it reaches the inlet of the second rotating body 1 installed in the upper stage again, and the same drying as described above is repeated.
  • the sheet material 35 coming out of the last rotator 1 leaves the exhaust rotator 1 contained in the upper and lower fabrics 36 A and 36 B by the fabric roll 10, and passes through the outlet of the hood 17. It is led and is sandwiched between the upper and lower fabrics 36 ⁇ and 36B.
  • a nip pressure is applied by the upper and lower sealing pinch holes 38 to prevent air from entering. While drying, take it out of the outlet of the drying hood 17.
  • the method of sealing the liquid substance 35 with the steam curtain by the grace suction box 40 and the steam box 43 may be omitted at the exit.
  • the upper and lower endless fabrics 36A and 36B also leave, and go around the upper and lower fabric rolls 10, respectively, and again hood 17 Return to the outside of the inlet at 7 and repeat the above drying cycle.
  • the upper and lower two breathable heat-resistant fabrics 36 A and 36 B are horseshoe-shaped cross-section evaporation surfaces in which a substantially semi-cylindrical surface shape on the rotating body 1 and a substantially flat shape on its extension are continuous.
  • the high-speed heating gas of 100 ° C or more is sprayed from the outer circumference (from both sides in a planar shape) of the sheet-like substance 35 sandwiched between the sheets (alternating with the upper and lower sides alternately).
  • Exhaust gas at 20 ° C or lower, including water vapor evaporated from the sheet-like substance 35, is sucked through the suction port 22 in the canopy hood 15 and installed on the inclined ceiling of the hood 17.
  • FIGS. 18, FIG. 19, FIG. 20 and FIG. Figure 18 shows an example of the indoor layout of the seventh embodiment, with the building cut away on the operation side.
  • FIG. 19 shows an example of the indoor layout of the seventh embodiment, in which the building is cut at the seat exit of the hood 17.
  • FIG. 20 is an example showing the cross-sectional details of the closed hood 17 in the width direction of the central paper machine in the seventh embodiment.
  • Fig. 21 shows an example of roof layout in the seventh embodiment.
  • hood opening / closing devices have a structure that is loose in the sealing method, are of a vertical up-and-down type through gaps formed by ropes, and a contact portion with the floor of the paper machine is a sponge-like structure. Therefore, a large amount of gas leaks from these sliding parts and a large amount of air leaks from outside.
  • the structure is fundamentally different from the opening and closing device 18 of the hood 17 having a closed structure by full-surface joining according to the present invention.
  • the opening and closing device according to the present invention includes a crimping device 18A that is bent inward on the entire surface of the front peripheral portion and the rear surface peripheral portion of the opening / closing door as shown by reference numeral 18 in FIGS.
  • the inner wall side of the hood 17 is provided with two steps in the periphery of the opening / closing door on the periphery of the opening / closing door, and can be crimped through a heat-resistant packing made of silicone sponge for contact and sealing with the contact surface.
  • FIG. 18 There is also an opening / closing force shaft and handle (not shown) on the front side of the door, which are not shown in the figure and which are pressed inside and tightened.
  • Fig. 18 The third and third opening / closing devices from the front left 18 are two double doors, and the other is a single door. Both are locked during operation, preventing burns, and there is no gas leakage from the inside of the hood and no air from outside.
  • hoods have a loose structure for the sealing method.
  • the inner and outer walls of the hood are usually made of thin aluminum sheets, and each corner and the connection between the walls are made of extruded aluminum material in the form of hollow pillars.
  • Fitting fittings are used for connection with the material.
  • the inner and outer walls are sandwiched by a heat insulating material such as glass cloth, and the ends of the connection are bent and joined, and both ends are manually pushed into the fittings to perform on-site assembly. Sealing is used to seal the gap between the mating parts. Applying agent by hand, peels off over time. Also, there were many wide openings with large widths for passing many sheets, and many openings for ropes, drive shafts, pipes, and ducts, and sealing was impossible. Therefore, a large amount of gas leaks from these sliding parts and a large amount of air leaks from the outside.
  • the hood 17 having a hermetically sealed structure by full-surface joining according to the present invention is fundamentally different from a conventionally known hood.
  • the opening of the hood 17 is provided with a sheet access relo provided with a rotary seal device, an exhaust duct 90 provided with multi-blade dampers 42, 37, 88 for sealing, and an intake port 91, respectively.
  • a sheet access relo provided with a rotary seal device
  • an exhaust duct 90 provided with multi-blade dampers 42, 37, 88 for sealing
  • an intake port 91 respectively.
  • only emergency air ducts 89 are available, and the others are completely sealed.
  • the structure of the hood 17 is a hermetically sealed structure made by joining the entire surface. That is, an inner box 17 A consisting of an inner wall which is made of a closed structure by full-surface bonding and capable of expansion and contraction by thermal expansion, and an outer box 1 consisting of an outer wall separated from the inner box by heat insulating material 1 7 B and each other are integrated. In addition, it can be moved in parallel by thermal expansion around the center of the outer box via a heat-resistant elastic sheet packing on a hood sole plate 93 fixed to the floor made of heat-resistant material with an anchor port. Install the thermal expansion knock pin 94 at the center of each outer wall (outer box).
  • the penetrating part between the two boxes is isolated through a heat insulating material so that it can expand and contract to cope with thermal expansion.
  • the entrance is sealed to shut off the inside of the inner box from outside air.
  • the inner box is completely integrated by electric welding, electron beam welding, plasma welding, laser welding, pressure welding, press fitting, caulking, bending, brazing, etc.
  • the necessary part for the maintenance of the part is a box body that is integrally joined by heat-sealing packing and the entire periphery of the joint surface is joined by screwing or other joining processing.
  • the outer box does not need to be entirely joined, and may have a fixed structure.
  • the thickness of heat insulation between the inner and outer boxes depends on the temperature inside the box, but is usually 150 mm inside and outside the wall and 200 mm outside the ceiling.
  • a thin plate of SUS316 with inner and outer width of 1m and thickness of 5mm inside and outside is reinforced in the form of ribs at its periphery and at points where strength is required.
  • the peripheral interconnects are completely joined by welding or the like to form an integrated internal wall. Therefore, the overall dimensions differ depending on the conditions such as the transport distance and transport method, the conditions of ports and roads, the space at the local paper machine assembling factory, and the cargo handling method.
  • the inner surfaces of the inner walls are completely joined to each other by welding, etc., and an inner box 1A is assembled. You.
  • outer wall faces the interior of the factory building, it is quite different from the inner wall, which is in contact with hot gas at a relatively low temperature of up to 250 ° C. 1.0mm inner and outer thickness
  • a SUS316 thin plate is bent around the perimeter of a unit area wall plate, connected to each other with screws, etc., and integrated to form an outer box 17B.
  • the inner and outer wall connecting ribs 98 made by L or U bending etc. are attached to the inside of the inner and outer walls at the required parts of the inner and outer walls arriving on the strength, and the connection part can expand and contract by thermal expansion, heat resistance It can be connected to each other via a plate or a flexible material 99.
  • the inner wall and the outer wall are separated from the inner box by a heat-resistant insulating material with a thickness required by the temperature of the inner gas body, for example, 150 mm.
  • An outer box body consisting of an outer wall is stacked on the outside thereof, and the inner and outer wall connecting ribs 98 are connected to each other and integrated to form a hood 17 of the box body.
  • the penetration between the two boxes responds to thermal expansion, and the ribs are connected and separated by a stretchable heat insulating material.
  • the entrance and exit are sealed to completely shut off the inside of the inner box from outside air.
  • the configuration example of the hood 17 has been described, but the hood 17 also includes an inclined ceiling or an inclined floor, and the inclined ceiling and the inclined floor have the same configuration.
  • most of the ceiling of the hood 17 is used as an exhaust gas opening from the hood 17 to form a hermetically sealed structure by joining the entire surface and to allow expansion and contraction by thermal expansion.
  • the sloping inner box and the sloping outer box are overlapped and integrated via a heat insulating material to form a sloping ceiling, and the wall (side wall) of the hood 17 is similarly formed with the inner box for the wall and the wall. It is formed by stacking and integrating the outer box with the heat insulator. Then, the hood 17 is formed by connecting the inner box for the wall portion and the inclined inner box for the ceiling portion to each other by full-surface joining.
  • An exhaust filter 33 for removing foreign matter in the exhaust gas is provided at an exhaust gas opening formed in the ceiling.
  • the drying device DS 7 is an example in which a rotating body 1 of a plurality of existing type 2 pressure vessels is diverted and installed on a new frame 4 in two upper and lower stages.
  • the existing floor of the existing paper machine building is covered with refractory bricks in contact with the inside of the hood to prevent high-temperature gas from expanding the rebar due to thermal expansion and blasting and breaking concrete.
  • the required number of rotating bodies 1 are installed by the rotating shaft 2 and the rotating body bearings 3 respectively.
  • the present embodiment is an example in which an existing paper machine is modified by utilizing the same, and is an embodiment in which the paper machine is arranged in a narrow space.
  • FIGS. 18, 19, 20, and 21, which show examples of the indoor arrangement of the seventh embodiment
  • the ceiling of the closed hood 17 is opened almost entirely, and the exhaust filter 3 3 Is installed on the operation side so that it can be pulled out when replacing.
  • the material of the filter is heat resistant, and its material and structure are determined by the type of foreign matter in the circulating gas. It is necessary to keep the static pressure of the gas circulation blower 25 as low as possible in order to save energy. To suppress the filtration resistance of the filter, it is necessary to lower the gas passage speed. It is preferable to install the filter using the entire surface of the part.
  • the existing factory was remodeled, so there was no space required, and all gas heating equipment was installed on the roof of the existing building, including a two-inlet gas circulation blower. Therefore, since the upper part of the existing building does not have the total weight of the new machinery, a steel frame base was separately penetrated through the flat roof and installed on it.
  • a drying device may be installed on the second floor, and the floor of the second floor may be used as an exhaust gas opening. In this case, the floor may be formed to be inclined.
  • the two suction ducts 24 are started up through the ceiling of the building, and the two suction portions of the gas circulation probe 25 are provided with heat-resistant and heat-insulating materials capable of coping with thermal expansion.
  • the gas circulation blower 25 will be installed on the rooftop via a vibration isolator.
  • the circulating gas heat exchanger 34 is also connected by ducts to the extension of the outlet side of the gas circulating blower 25 on the rooftop frame through a heat-resistant heat-insulating material that can cope with thermal expansion.
  • the circulating gas heat exchanger 34 has a high temperature zone on the side where the external combustion unit is mounted, and the circulating gas is heated by the combustion gas by indirect heat exchange.
  • the inside of the indirect heat exchanger (not shown) is a system in which the twisting gas returns to the U-shape.
  • the high-temperature combustion zone has a small hole for secondary air inflow outside, and a cylindrical shape that cools the outer ring with medium-temperature air supply.
  • the high temperature side is fixed on one side, and the opposite low temperature side has thermal expansion and is free to slide.
  • a multi-tube tube made of special heat-resistant alloy both ends of which are subjected to thermal expansion
  • the corresponding expansion joint is welded.
  • the heat exchanger was made entirely by welding and there was no leakage of gas, air or combustion gas.
  • An air supply duct 27 is connected to the outlet side of the circulating gas heat exchanger 34 via a heat-resistant and heat-insulating material that can cope with thermal expansion, and penetrates the roof to drive the paper machine and the hood 1 7 to the air supply connection duct 21 via cap inlet damper 88.
  • a gas burner 82 connected to the 13A gas pipe 83, a heat exchange combustion gas circulation fan 51, and the duct 84 are arranged. Combustion gas is not escaping at one time to save energy and protect the combustion zone from heat.It is circulated and mixed with new air to be replenished. Cooling.
  • the exhaust gas is exhausted by the economizer 52 after heat exchange with the new air that has passed through the duct 86 from the air supply fan 85. Therefore, the exhaust gas temperature of the external combustor is below 150 ° C and the thermal efficiency exceeds 95%.
  • An exhaust duct 90 is connected near the top of the hood 17 via an exhaust control damper 42, and is connected to an exhaust fan 81 installed on a pedestal through the roof. Also, in the event that the internal pressure rises suddenly due to the emergency stop of the blower 24 inside the hood 17, the air release duct 89 will be installed through the roof via the air release damper 88.
  • An air supply port 91 is provided at the suction port of the gas circulation blower 25 through an air supply control damper 37. In order to prevent extraneous air from leaking into the hood, set the static pressure inside the hood 17 to a positive pressure, and in superheated steam drying, exhaust by the rotation speed of the exhaust fan 81 or the exhaust control damper 42.
  • the internal pressure of the hood 17 is controlled by controlling the number of rotations of the air supply control damper 37 and the exhaust fan 81 or the air supply / exhaust amount by the exhaust control damper 42. Set slightly higher than the external pressure of the hood. If the pressure is too high, the seal portion of the inner box 17A will be damaged. Therefore, it is preferable that the pressure is from 9.8 Pa to 98.067 Pa.
  • the wet sheet-like substance 35 which was made in the wire part and dehydrated to 60 to 50% in moisture by a press part, is connected to the top and bottom of the hood 17 which is completely sealed by a heat insulating panel. Proceeds with fabric 36A and 36B. Next, it proceeds between the upper and lower sealing pinch rolls 38, and is rapidly condensed and heated between the steam box 43 and the suction box 40. Sheet material with increased temperature 3 5 Is wrapped by the upper and lower fabrics 36A and 36B, reaches the inlet of the closed hood 17, and passes through the central slit 95 of the hood for sheet passage.
  • the hood 1 In the hood 1, firstly, it reaches the inlet of the rotating body 1 installed at the lower entrance side, and the sheet-like substance 35 is sandwiched between the fabrics 36 A and 36 B, and the outlets 1 9 respectively.
  • the rotating body 1 in the first canopy hood 15 having the inlet 22 and the gas outlet 22.
  • the sheet-like substance 35 sandwiched between the fabrics 36 A and 36 B is strongly pressed to the rotating body 1 surface via the fabric tension roll 11.
  • the water in the sheet-like substance 35 evaporates rapidly from the inside due to the impact of the high-speed high-temperature gas from the outlet 19, and passes through the sheet at a glance with a pressure flow, and evaporating and drying proceeds. .
  • the sheet-like substance 35 passing through the first rotating body 1 is a substantially flat free-running section while being sandwiched between the exhausted fabrics 36 and 36, and a huge amount of high-temperature fluid flowing at a high speed. It travels in an atmosphere heated by gas. At that point, the gas is blown out from the gas outlets 22 of the upper and lower canopy hoods 15, and further dried and evaporated due to the temperature difference between the heated gas rising toward the ceiling by the gas circulation blower 25 and the sheet material 35. Progresses. After that, it reaches the inlet of the second drying body 1 installed in the upper stage again, and the same drying as described above is repeated.
  • the sheet-like substance 35 coming out of the last rotating body 1 is wrapped by the fabric rolls 8 and leaves the rotating body 1 while being covered by the upper and lower fabrics 36 A and 36 B, and the feed 17 It proceeds through the central slit 95 of the hood for sheet passage at the exit and the relo center slit 95.
  • the steam box 43 and the suction box 40 prevent the outside air from flowing into the hood 17 with the steam curtain.
  • a nip pressure is applied by the upper and lower sealing pinch rolls 38 to carry out the air from the drying hood outlet to the outside while preventing air from entering.
  • the upper and lower endless fabrics 36 A and 36 B pass through the canvas opening 8 through the sealing frame 45 and the upper and lower slits for fabric or blanket passage, and then into the hood 17 again. Return and repeat the above drying cycle.
  • An evaporating surface with a horseshoe-shaped cross-section in which a substantially semi-cylindrical surface on the rotating body 1 and a substantially flat shape on its extension are continuous, and a sheet-like substance 3 sandwiched between two upper and lower fabrics 36 A and 36 B 5, a high-speed heating gas of 100 ° C. or more is sprayed from both sides of the semi-cylindrical surface in a plane shape from the outer periphery.
  • Exhaust gas at 100 ° C and outside including water vapor evaporating from the sheet material 35 is sucked through the suction port 22 in the canopy hood 15 and exhausted by the ceiling exhaust filter 3 3 in the hood 17.
  • the exhaust gas pressurized by the gas circulation blower 25 is sent to a circulating gas maturation exchanger 34 connected with a duct, and is preferably heated to 100 ° C or more, and most of it is heated.
  • the air is supplied from the air supply duct 27 to the canopy hood 15 from the air supply box connection duct 21 through the cap inlet damper 187. Blows through the air supply box 20 and blows out the outlet 19 through the upper and lower two endless fabrics 36 A and 36 B.
  • the vaporized water vapor remaining in the voids in the fabric 36 is expelled, and the sheet-like material 35 is directly heated, and the boundary layer made of saturated water vapor around the sheet-like material 35 is disturbed to evaporate.
  • the temperature is preferably promoted to a heating gas atmosphere of 130 ° C. or outside.
  • the automatic operation method at the start of operation with the superheated steam drying method is as follows: (1) Oxygen concentration control is set to 0%, (2) Gas circulation blower is started until the gas circulation flow rate reaches the initial set value.
  • the static pressure in the hood 17 is controlled by the rotation speed of the exhaust fan 81 or the exhaust control damper 42 to exhaust the excess superheated steam due to the evaporation of water from the wet sheet. .
  • the water supply control valve 63 is opened, water is injected, and even if the initial superheated steam deficiency is self-supplied. Good, closes when oxygen concentration reaches 0%.
  • the automatic operation method when the paper runs out is to prevent the gas burner from stopping due to a sudden rise in the temperature inside the hood 17 when the paper can be repaired in a short time due to factors other than the drying part.
  • the amount of water substantially equivalent to the evaporation of water from the wet sheet may be opened by opening the water supply control valve 63. If the temperature inside the hood 17 rises sharply, the hood 17, the belt-like band 36, the rotating bearing 3, the forced lubrication device, the carrier rope, etc. may be damaged, so it is absolutely necessary to avoid it.
  • the exhaust control damper 4 2 to maximize the supply / exhaust air volume, respectively, no superheated steam.
  • the temperature is lowered to 9 9 ° C or less. If the gas circulation flow rate is below the set temperature, it will be below the set value in advance. Until then, control the INV motor of the blower and lower it (start at a low speed and reduce the speed below the specified temperature in order to reduce the motor capacity by using a hot start), and there is a risk of condensation inside the hood 17
  • the gas circulation blower 25 stops at a dry-bulb temperature of 60 ° C or less, where there is no risk of burns and the relative humidity falls to 10% or less.
  • the impact hood nozzle (air outlet) outlet steam condition is
  • the impingement IL> of the impact nozzle and the sacrifice fabric (fabric belt, zonal belt) section is
  • Canopy hood shock hood
  • Evaporated water vapor excess ⁇ : water carried by cut-part
  • the latent heat of evaporation of the sheet evaporation moisture and the required heating heat may be introduced into the above-mentioned enthalpy calculation formula.
  • the boiler calorific value is 13A gas combustion, and the boiler uses a gas burner, indirect heat exchange for steam heating and air preheating exhaust gas heat exchange.
  • the heat input is based on the outside air, and only the calorific value of the fuel is used.
  • the heat output is the heat absorption of the circulating gas plus the heat loss of the boiler alone.
  • thermal efficiency of a conventional high-pressure vessel drying cylinder type drying device is between 50% and 55% based on the boiler fuel calorific value, but is ideal.
  • the thermal settlement value under typical conditions is as follows.
  • a high dew point sealed hood will be used to heat the air supply by exhaust heat exchange, drain heat exchange, and flash heat exchange, eliminating the need for steam air supply heating. These heat exchange amounts are offset each other and calculated at the primitive temperature, and assuming that the direct thermal efficiency of the dryer is 96.5%, the required heat amount of the dryer heating is as follows as evaporation under atmospheric pressure.
  • the saturated steam of 2.433x10 2 kPa is (JSME-Revised Steam Table and Diagram-Page 10-1950):
  • the required supply steam amount and required heat amount are as follows, assuming that the steam pressure inside the dryer is 243.2 kPa, ignoring the blow-through steam amount.
  • the air supply condition is in summer
  • the sensible heat of the drain is as follows, assuming that the discharged drain temperature is 86 ° C assuming drain heat exchange and flash heat exchange.
  • the heat efficiency of the boiler was calculated as 90% (compared to the impact drying method) with the heat efficiency of the boiler as 90% (in the case of a heavy oil boiler, the S content is higher than the gas boiler and the outlet temperature of the heat recovery gas unit is higher).
  • Is 634.63 lkcal / hr 2657.1kJ / hr,
  • the method for producing a sheet-like substance when the method of the present invention is carried out wherein the dry bulb temperature is 80 ° C or lower.
  • the dry bulb temperature is 80 ° C or lower.
  • the results of a test plant test and thermal engineering calculation of the heat balance of a superheated steam-confined impact drying device papermaking 507.384 absolutely dry BDkg f / lkg / kg 'DA to describe the heat balance calculation.
  • the high temperature and high dew point air temperature at the outlet of the impact hood nozzle was the same as SHS, and the absolute humidity was 100%. That is,
  • V (0.4555 x (1 + 0.622) x (273.16 + 250)) / 100
  • the relative humidity is 1.54%
  • the wet bulb temperature is 88.72 ° C
  • the dew point temperature is 84.79 ° C (ie, an example within the scope of the present invention).
  • the oxygen concentration is 8.05% and there is no danger of fire and it has a fire extinguishing function.
  • the gas flow rate in the impact nozzle and suction fabric section is
  • Dry air volume is 33072.078kg 'DA / hr
  • the total wet air volume is 66144.156kg / hr and 106,279.71kJ / hr.
  • V 0.4555 (1.0 + 0.622) 17100
  • the required heating quantity in the circulating high-temperature high-dew point air heat exchange after completion of the specified air supply and exhaust is 33,072.078 x (767.55—752.019)
  • the boiler fuel calorific value is the sum of the following heat output,
  • the sensible heat of the hood exhaust (exhaust temperature 228.267 ° C & outside air 32 ° C standard) is 622.481 x
  • a test plan is used as an example in which heated wet air having a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more is used.
  • the absolute humidity 0.25 kg / kg 'DA based on the results of the experiments on the heat balance and the thermal engineering calculation of the heat balance of the superheated steam confined impact drying unit (evaporated water amount 619.057 kg / hr at 507.384 kg / hr of absolutely dry BDkg). Describe the heat balance calculation in.
  • X 0.25kg / kg 'DA
  • the relative humidity is 0.72%
  • the wet bulb temperature is 74.16 ° C
  • the dew point temperature is 67.66 ° C (that is, an example within the scope of the present invention).
  • the oxygen concentration is 14.98% and there is no fire extinguishing function.
  • the gas flow rate of the impact nozzle and the suction fabric section is
  • Dry air volume is 61512.791 kg 'DA / hr
  • V 0.4555 (0.260064 +0.622) T / 100
  • V 0.4555 (0.25 +0.622) 17100
  • the required heating amount in the circulating high-temperature high-dew point air heat exchange after completion of the specified air supply and exhaust is 61512.791 (236.888—226.807).
  • the boiler fuel calorific value is the sum of the following heat output:
  • the relative humidity is 0.19%
  • the wet bulb temperature is 58.42 ° C
  • the dew point temperature is 40.49 ° C (ie, an example outside the scope of the present invention).
  • the oxygen concentration is 19.44% and there is a danger of fire.
  • the gas flow rate of the impact nozzle and the suction fabric section is
  • the steam is 3991.992kg / hr
  • V 0.4555 (0.057754 + 0.622) T / 100
  • V 0.4555 (0.05 +0.622) T / 100
  • a test plan was used as an example in which heated wet air having a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more was used.
  • Humidity 0.025kg / kg 'DA Describe the heat balance calculation in.
  • V C0.4555 x (0.025 + 0.622) x (273.16 + 250)] / 100
  • the relative humidity is 0.097%
  • the wet bulb temperature is 54.56 ° C
  • the dew point temperature is 28.65 ° C (ie, an example outside the scope of the present invention).
  • the oxygen concentration is 20.19% and there is a danger of fire.
  • the gas flow rate of the impact nozzle and the suction fabric section is
  • Dry air volume is 82894.669kg 'DA / hr
  • V 0.4555 (0.025 + 0.622) T / 100
  • the boiler fuel calorific value is the sum of the following heat output:
  • the results of Examples 2 to 5 and other results are shown in Fig. 24.
  • the Y axis is the required heat of the heat exchanger, KJ / BDkgPaper, and the X axis is the absolute humidity, G / Kg'DA.
  • Figure 35 shows the thermal efficiency% on the Y-axis and the absolute humidity. G / Kg 'DA on the X-axis.
  • the heat input is based on the steam supplied to the internal heating cylinder, but in this calculation, the boiler thermal efficiency is assumed to be 90% and the comparison is based on the fuel calorific value.
  • superheated steam requires the least amount of heat, the thermal efficiency is as high as 76.03%, and surplus superheated steam can be used effectively.
  • the absolute humidity can be reduced to, for example, 100 kg / kg '. If the temperature is increased to DA (dew point temperature 96.1 ° C), the required heating amount in circulating high temperature and high dew point air heat exchange is
  • the conventional method of calculating the thermal efficiency of the drying section of a paper machine was to use the latent heat of vaporization of moisture in the sheet, which is the heat loss, as the effective heat, and divided it by the total heat input or the total heat output to obtain the thermal efficiency.
  • the heat efficiency as a steam generator not a dryer, that is, the recovered steam sensible heat
  • the thermal efficiency as a steam generator should be presented by dividing by heat input or total heat output, but we would like to propose it at a dry engineering-related conference in the future.
  • the thickness of the hood is large due to large static pressure fluctuations in the arrangement of the pocket air supply and bottom air supply and the exhaust duct.
  • 75 to 10 O mm Built-in heat insulator inside and outside Low-temperature air enters through many gaps and openings between the sheet metal assembly panels, and the moisture in the humid air is locally cooled and condensed to form a sheet.
  • the dew point temperature is 60 ° C
  • the oxygen concentration is 16.8%
  • the absolute humidity 0.1553 kg / kg
  • the limits are inside and outside of DA.
  • the thermal efficiency is based on the calorific value of the boiler fuel. The limit was 50 to 55%.
  • th k J / s is the heat loss due to leaked steam (Heat Loss Other)
  • 0 CD shbd k J / s is the calorie difference between sheet inlet and outlet and outlet)
  • the required heat quantity of superheated steam heating in the circulating gas heat exchanger 34 with an external combustor is shown by the following equation.
  • kJ / s shock superheated steam mass flow rate kg / s X (shock superheated steam enthalpy kJ / kg—superheated steam enthalpy kJ after exhaust from the impact hood outlet kJ /kg)
  • kJ / s shock superheated steam mass flow rate kg / sx (shock superheated steam enthalpy kJ / leg—shock superheated steam after exhaust from the hood outlet (Enthalpy k J / kg) + Heat loss of exhaust gas in the combustor k J / s + Heat loss from radiation around the combustor kJ / s
  • the heat and mass transfer equations for drying high temperature and high dew point heated air are summarized as follows.
  • the heat required for heating the high-temperature, high-dew-point heated air in the circulation gas heat exchanger with external combustor 34, in which the required heat amount is reduced when the rotating body E is internally heated is expressed by the following equation. It is.
  • Fuel calorific value of gas burner (84) of circulating gas heat exchanger (34) kJ / s circulation Required heat of heating in gas heat exchanger kJ / s + Heat loss of exhaust gas in combustor kJ / s + Heat loss due to radiation around combustor kJ / s
  • the fuel calorific value of the gas burner (84) of the circulating gas heat exchanger (34) kJ / s
  • the sheet-like substance is applied to a plurality of rotating bodies mainly by outer peripheral impact heating. While drying with heat-resistant air-permeable strips at the endless, it is dried rapidly while completely restraining its expansion and contraction.
  • the rotating body 1 is directly heated by separating the fabric from the high-moisture sheet, and the surface temperature is rapidly increased to 1 ⁇ ⁇ ⁇ 5 ° C.
  • the temperature S 3 of the sheet on the rotating body side was sharply increased to 170 ° C.
  • Fuabu Rick side temperature far behind reached 1 55 ° C
  • the central portion temperature S 2 of the sheet reached 1 55 ° C with a delay in further.
  • the surface temperature of the rotating body 1 gradually rises to 165 ° C, albeit gradually, and at the same time, the rotating body side temperature S ' 3 of the sheet also becomes 155 ° C. in a Li, also the central portion temperature S of sheet '2 even a little later reached 1 55 ° C, the fabric-side temperature S'! Reached 153 ° C with a slight delay, but the difference in temperature rise during the refraction, which was different from that during superheated steam, was extremely small.
  • a pair of moisture sensors and temperature sensors with a thin film thickness of 0.1 mm or less are inserted for the purpose of casting, and the sheets are manufactured by pressing. Each was connected to an automatic recorder and measured.
  • the outer circumference of the rotating body is gradually increased mainly by heat convection.
  • the temperature in the sheet gradually rises as a result of heat transfer, and the moisture in the sheet gradually rises in the sheet due to the capillary phenomenon due to the heat conduction due to the temperature difference between the rotating body temperature of the wet sheet in contact with the outer circumference of the rotating body.
  • the fabric side of the sheet e.g., capillary flow
  • passes through the fabric repeatedly condenses and re-evaporates
  • the evaporation of the moisture gradually progresses in the phase, but the pockets in the closed hood are evaporated at a dew point temperature of 60 ° C or outside. Is cooled in the sheet, condensed and returned to moisture again , Also repeated evaporation and condensation cycle many times, the water vapor that has reached the Fabry-click 3 6 also serve as moisture condenses again in the fabric, sheet More harmful evaporation.
  • the sheet-like material 35 reaches the phase 4, which is the sole free-running phase of the sheet, and the moisture in the sheet evaporates into the surrounding humid air, and the sheet temperature rapidly rises due to the latent heat of evaporation. The temperature drops to around 50 ° C, and the preheated state returns to the above-mentioned 1 phase again, and the intermittent drying cycle becomes an audience-like drying cycle, requiring a long time for drying, and loss of heat energy and power. There are many.
  • the sheet-like material 35 freely shrinks in the width direction due to drying, and the physical properties between the machine direction (MD) and the cross direction (CD) of the sheet-like material. It produces directionality due to strength, etc., and produces recurl / cockling, etc. whose dimensional stability has deteriorated, leading to a decrease in printability.
  • sheet-like substances are different from plastic films, etc., and many fibrillated fibers are laminated in multiple layers, causing inter-fiber bonding during drying three-dimensionally. The progress of drying differs with the progress of drying between dense and sparse parts of the fibrous structure, and cockle occurs in the sparse parts because absolute moisture approaches zero without limit, and CD and MD curls occur. It becomes paper with curl habit.
  • phase and (3) phase there is no conventional (1) phase and (3) phase, most of which are (2) phases in which the sheet is pressed against the rotating body 1 by the fabric 36 and covered, and the next rotating body is formed. While arriving, it slightly leaves the rotating body 1, but is sucked and restrained by the suction fabric roll 8, or is restrained by being inserted and restrained by two fabrics 36 on both sides. Since both were in a heated gas atmosphere of 130 ° C or higher, drying was promoted throughout the entire period, and by completing the drying in a short time, it was possible to contribute to energy saving. In addition, since the sheet-like material 35 is constantly restrained and dried, the dimensional stability is good (the underwater elongation and the in-air elongation are small).
  • a sheet-like substance 35 is sandwiched between the inlets 60 of the sealing hood 17 and a suction box 40 and a steam box 43 are provided above and below the sheet-like substance 35.
  • the latent heat of the heated gas was given to the water, and it was partially condensed. A large amount of heat was transferred instantaneously, and the low-temperature sheet was rapidly heated by the condensation heat transfer.
  • Conventional paper With the speeding up of the paper machine, the low-temperature sheet-like material came into close contact with the rotating cylinder, and the sheet-like material was taken up by the rotating cylinder, and it was expected that the trouble of frequently breaking the wet paper breakage would be resolved. Further, in the method according to the present invention, under a heated gas atmosphere of 100 ° C.
  • the sheet-like material 35 is exposed to a temperature of 100 ° C.
  • Circulation Reheat gas is blown at a high speed from the outlet 19 to instantaneously evaporate a large amount of water in the sheet material 35 and dry it quickly.
  • the sheet moisture is between 32 and 26% at the critical point of the sheet while the moisture in the sheet is wet.
  • the water evaporates on the spot to become water vapor, passes through the sheet by a pressure flow (Pressure flow), and its volume rapidly increases due to its rapid volume expansion, and becomes porous and bulky.
  • the abscissa indicates the apparent density and the ordinate indicates the tensile strength of DRY and WET, respectively.
  • the results are shown in comparison with the results obtained with the conventional internal heating cylinder. As described above, the bulk density was increased due to the increase in the number of particles, the apparent density was reduced, and the tensile strength (DRY) (WET) was greatly enhanced.
  • the internal heating dryer of the prior art, the superheated steam drying and the heated wet air drying are shown by regression equations, and it is evident that the quality is clearly improved in each case.
  • Fig. 27 shows the NBCTMP pallet.
  • Fig. 27 shows the NBCTMP pallet.
  • the range A (indicating the superheated steam region) shown in the Morrie diagram of FIG. Example 1 with superheated steam of 150 ° C or more in the area (above), and dry bulb temperature in the range B (area of high-temperature and high-humidity air) of 150 ° C and high-humidity with a dew point of 60 ° C or more.
  • the required amount of heat and thermal efficiency in the heat exchanger for heating the circulating gas were higher than those in Example 4 and Example 4 using the high-temperature, low-humidity and humidity air in the range C (conventional area). It is greatly improved as compared with the fifth embodiment.
  • the intersection of the extension line of the absolute temperature and the relative humidity 100 ⁇ % indicates the dew point temperature. As shown in Fig. 31, the higher the impact temperature of the heated gas is, the higher the drying temperature is 150 ° C or higher, but the faster the drying speed is.
  • the superheated steam differs from the heated humid air (HA) in the absolute humidity of the air, but crosses the transition point from 170 ° C to 220 ° C.
  • the air without heat radiation reverses the drying speed of steam, which is the heat radiation gas, in the high temperature range.
  • the impact gas velocity of the heated gas should be 50 m or more per second, preferably 100 m or more, and the opening rate of the nozzle for injecting the shock gas should be 2 to 3% or more.
  • the figure shows the case where the nozzle diameter is 8 mm and the opening ratio is 2.51%.
  • the nozzle openings are arranged so that if the shock gas continuously collides with the line of the sheet, mark streaks are easily formed on the sheet surface. Alternatively, forced lateral fine movement is preferable.
  • the nozzle opening ratio refers to the ratio% of the total projected area of the outlet 19 to the opposing rotating cylinder and the total sectional area of the nozzle opening. Actually, a contraction occurs in the shape of the nozzle orifice, the cross-sectional area of gas collision decreases, and the flow velocity increases.
  • the fabric used in the test of Fig. 31 had a Daiwabo air permeability of 7 555 CCM and was made of PPS.
  • Fig. 32 shows the relationship between the drying speed and the impact speed of the heated gas.
  • the nozzle opening ratio was 5.65% (nozzle diameter 12 was worn) and 2.51% (nozzle diameter 8) with heated air and superheated steam at 250 ° C, respectively.
  • Fig. 33 shows the relationship between the drying speed and the nozzle opening ratio (12 um, 8 um, 4 um -0.63%).
  • the impact speeds were 70, 38, and 92 with heated air and superheated steam at 250 ° C and 200 ° C, respectively.
  • Fig. 37 shows a boat dried by a conventional internal heating cylinder
  • Fig. 37 shows a port dried by an impact drying method using 250 ° C superheated steam of the method of the present invention
  • Fig. 38 shows a port dried at 244.2 ° C of the method of the present invention.
  • Electron micrographs of boat cross sections are shown for the ports dried by the shock drying method using heated air at an absolute humidity of 0.672 kg / kg 'Da.
  • the upper figure shows a magnification of 50
  • the middle figure shows 100
  • the lower figure shows 200.
  • the port dried by the impact drying method using 250 ° C. superheated steam in the method of the present invention was 0.3142 g / cc, which was about 31% lower.
  • the heating gas is blown under specific conditions from the outer peripheral direction of the externally heated rotary body that supports the sheet-like substance, thereby instantaneously vaporizing and evaporating the water in the wet sheet-like substance (pressure flow). ), And dried at a high speed in a porous state, making it possible to produce paper with a low apparent density of about 32% as bulky as the conventional technology.
  • the sheet-like substance under specific conditions while sandwiching the sheet-like substance between the cylinder and the air-permeable strip, the shrinkage of the sheet-like substance is suppressed, and the sheet-like substance is more stable than the conventional technology.
  • Paper with physical properties and high strength values can be produced with about 1/8 the required heat of the prior art.
  • the drying speed was about 6 times higher than that of the conventional technology with Fabric Through (direct combustion of high-temperature combustion gas or air with low humidity in the case of a junky dryer).

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  • Drying Of Solid Materials (AREA)
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Abstract

A method of manufacturing a paper sheet capable of providing remarkably increased physical strength values by lowering hyaline transition temperature in a high speed sheet drying method capable of eliminating absence of paper and requiring a heat quantity reduced to approx. one-fourth, comprising the steps of stacking an inside box body formed in full face joined sealed structure and extendable due to thermal expansion on an outer box body separated from the inner box body through an insulator, isolating a through part between both box bodies by the expandable insulator to cope with the thermal expansion and sealing the inlet and outlet thereof to cut out the inside of the inside box body from the atmosphere, providing a rotating body and a permeable tropical zone resistant zone moving in synchronism with the rotation of the rotating body in the inner box body, circulatingly heating heated gas mainly formed of superheated steam of 100 or higher and spraying the heated gas from the outer periphery to one or more sets of rotating bodies through a wet sheet, and polarizing the sheet by pressure flow evaporation for drying.

Description

明 細 書  Specification
シート状物質の製造方法及びシート状物質 Method for producing sheet-like substance and sheet-like substance
° 技術分野 本発明は紙や湿式法不織布等の湿潤状態のシート状物質の乾燥工程を有する シート状物質の製造方法及びシー卜状物質に関するものである。 冃景技術 抄紙機上で紙を乾燥する従来の方法として、 中低圧蒸気で内部加熱する第二種 圧力容器構造の乾燥シリンダや、 直火燃焼や電磁誘導加熱などで内部加熱するシ リンダからの熱伝導を主体とした乾燥方法が一般的である。 上記のシリンダは、 屋根と垂れ壁のみの開放フード、 あるいは、 多数のシートやロープと、 駆動軸や 配管と、 ダク トのための開口と、 上下動するための多数の間隙を有する昇降扉と を有する疎な密閉フードにより囲まれている。 Technical field The present invention relates to a method for producing a sheet-like substance having a step of drying a sheet-like substance in a wet state such as paper or a wet nonwoven fabric, and a sheet-like substance. Background technology As a conventional method of drying paper on a paper machine, there are two types: a drying cylinder with a pressure vessel structure that internally heats with medium- and low-pressure steam, and a cylinder that internally heats with direct combustion or electromagnetic induction heating. A drying method mainly based on heat conduction is generally used. The above cylinder is an open hood with only a roof and a hanging wall, or a lift door with many sheets and ropes, drive shafts and pipes, openings for ducts, and many gaps for up and down movement. Is surrounded by a sparse closed hood having
そして、 低圧水蒸気により加熱した多量の中温低湿度空気の外気が、 乾燥シリ ンダ間のポケット部を主体にフード内各所へ吹き込まれる。 シート状物質から蒸 発した水蒸気とポケット部を主体に吹き込まれた空気とは、 高速で走行するシー ト状物質と共に其の走行開口部から流入する低温空気や、 多数のフード開口や間 隙からフード内部に流入した空気とともに、 フード内部で結露しないように相対 湿度 3 0 %以下の状態で中温低湿度下に持ち去られるが、 前記開口周辺では外部 の冷気によリ冷却され相対湿度が大幅に高まリ常に結露の危険に直面している。 又フードの高さ方向での内部の風圧勾配により、 上部では内圧が高く高湿度空気 が室内に漏洩して抄紙室内の天井部や周辺で結露し、 下部では負圧と成り低温空 気が多量に流入する。其の対策にフード内部ゃ建屋天井部等を局所的に加熱して、 更に貴重な熱エネルギーを浪費して居る。  Then, a large amount of outside air of medium-temperature and low-humidity air heated by low-pressure steam is blown into various parts of the hood, mainly through pockets between the dried cylinders. The water vapor evaporated from the sheet-like substance and the air blown mainly through the pockets are the low-temperature air that flows from the sheet-like substance traveling at high speed through the traveling opening and the numerous hood openings and gaps. Along with the air that has flowed into the hood, the hood is carried away at a medium humidity and low humidity at a relative humidity of 30% or less so that dew does not form inside the hood. High altitudes always face the risk of condensation. In addition, due to the internal wind pressure gradient in the height direction of the hood, the internal pressure is high at the upper part and high humidity air leaks into the room, forming dew on the ceiling and the periphery of the papermaking room, and the lower part becomes negative pressure and a large amount of low-temperature air. Flows into. As a countermeasure, the inside of the hood and the ceiling of the building are locally heated, and more valuable heat energy is wasted.
従来の抄紙機フードはワンパススルーで貴重な高温排気を循環使用する事無く 其の僞外気に逃している。 従って排気ガスの絶対湿度は低く、 露点温度も低く凝 縮伝熱も殆ど無いため、 顕熱のみで外気を予備加熱するしかない。 排気された多 量の水蒸気を含む加熱湿り空気は、 其の僞大気中に放出され膨大な熱と水を浪費 する。 又給排気ブロワ一は、 多量の空気を給気したり排気したりで多量の電力を 消費している。 Conventional paper machine hood is one-pass-through without circulating valuable hot exhaust I have missed that false air. Therefore, the absolute humidity of the exhaust gas is low, the dew point temperature is low, and there is almost no condensation heat transfer, so the only option is to preheat the outside air using only sensible heat. The exhausted heated humid air containing a large amount of water vapor is released into its pseudo-atmosphere and wastes huge amounts of heat and water. In addition, the air supply and exhaust blower consumes a large amount of power by supplying and exhausting a large amount of air.
第二種圧力容器構造の乾燥シリンダは、 1 9 . 6 1〜3 9 . 2 3 x 1 0 4 P a内 外の低圧蒸気をロータリージョイント経由で多量に消費する。 内部で凝縮したほ ぼ同圧のドレンは抽出されてボイラー給水に戻される。 その間、 ドレンは、 ドレ 一ネージシステムの各フラシユタンクを経て徐々に管内圧を低下させ、 最後に発 電所のドレンタンクで大気圧下に戻り再蒸発し放熱する。 Drying cylinders of the two pressure vessel structure 1 9.6 1-3 9. Heavily consumes 2 3 x 1 0 4 P a in outside of the low pressure steam through the rotary joint. Drain of approximately the same pressure condensed inside is extracted and returned to the boiler feedwater. During this time, the drain gradually reduces the internal pressure through the flash tanks of the drainage system, and finally returns to atmospheric pressure in the drain tank of the power plant to re-evaporate and release heat.
2 0 0年 5月発行の Tappi Journal には、 2枚のエンドレススチールベルトによ つてシート状物質を挟み、 ベルト面に開放した高圧函を上下に対向して設け、 高 圧水蒸気加熱及び高圧水冷却し、 蒸発する水蒸気を直ちに冷却面に凝縮させてド レン化してェンドレスフアブリックベルトによリ持ち去ることによって、 湿潤状 態のシ一ト状物質をその伸縮を拘束しながら 1 0 0 °C以上の高温下で乾燥する方 法が提案されている。  The Tappi Journal, published in May 2000, states that a sheet-like material is sandwiched between two endless steel belts, and a high-pressure box opened on the belt surface is provided facing up and down. Cooling and evaporating water vapor is immediately condensed on the cooling surface, drained, and taken off by the endless fabric belt, so that the wet sheet-like substance is restrained from expanding and contracting. A method of drying at a high temperature of over ° C has been proposed.
この方法は、 貴重な高圧蒸気を必要とするが、 密閉容器中における高温蒸気加 熱なので容器内温度は飽くまでも蒸気の飽和温度で制約される。 本発明の衝撃乾 燥法では、 略大気圧下で 2 5 0 °Cの過熱蒸気 （もちろん、 熱交換器での加熱方法 は直接燃焼法が好ましい) を用いてシー卜状物質を加熱可能である。 密閉容器内 では、 その飽和状態の 2 5 0 °Cにおいて、 蒸気圧力 3 . 9 7 6 M P aを要する。 従って逼常、 中央発電所で行う蒸気圧力差による蒸気タービン発電が不可能であ る。 しかもこの方法は、 冷却水を多量に使用して低温温水を得るのみである。 更に、 上記方法は、 耐圧構造のそれぞれ対向する加圧函と、 機械構造的にこれ に対応した頑丈なフレーム構造と、 高圧熱交換器類や高圧ポンプ群による膨大な 設備投資と、 電力費や蒸気費とを要する。 もちろん、 紙の強度向上など品質の一 部改善効果は大であるが、 反面、 上下のスチールベルトによる高圧縮力で密度が 大となり、 紙の厚さが薄くなつてしまう。  This method requires precious high-pressure steam, but the temperature inside the container is limited by the saturation temperature of the steam to the extent that it is heated because of the high-temperature steam heating in a closed container. In the impact drying method of the present invention, the sheet-like substance can be heated using superheated steam at 250 ° C. at substantially atmospheric pressure (of course, a direct combustion method is preferred for heating in a heat exchanger). is there. In a closed vessel, a vapor pressure of 3.976 MPa is required at the saturated temperature of 250 ° C. Therefore, steam turbine power generation due to the steam pressure difference at the Central Power Station is not possible. Moreover, this method only uses a large amount of cooling water to obtain low-temperature hot water. In addition, the above-mentioned method requires a pressurized box facing the pressure-resistant structure, a sturdy frame structure corresponding to the mechanical structure, enormous capital investment by high-pressure heat exchangers and high-pressure pumps, Steam costs are required. Of course, the effect of partially improving the quality, such as improving the strength of the paper, is great, but on the other hand, the high compression force of the upper and lower steel belts increases the density, resulting in a thinner paper.
更に、 加熱面はヤンキー肌のように平滑である一方、 冷却面はファブリックマ —クが付いた凹凸面であるため、 表裏差が甚だしい。 したがって、 一部冷凍倉庫 用ライナーポード以外には不適であるとともに、 熱経済効果は全くないという問 題点がある。 In addition, the heating surface is as smooth as Yankee skin, while the cooling surface is —Because of the uneven surface with ク, there is a huge difference between the front and back. Therefore, there is a problem that it is not suitable except for some freezer warehouse liner pods and has no thermo-economic effect.
また、 薄葉紙やトイレツトティッシュ紙等の薄物シ一卜状物質の乾燥では、 1 In the drying of thin sheet-like substances such as tissue paper and toilet tissue paper, 1
0 k g / c m2内外の中圧蒸気で加熱し、 外部に開放して設置した、 1本の大径乾 燥シリンダ (通称ヤンキードライヤと称し、 その側面ゃシート状物質の出入口は 完全に室内空間に開放されている） の中心上半部にキヤノピーフードを設置し、 外気及び一部の再循環湿り空気を空気源として、 灯油等を燃焼して 3 0 0〜4 5 0 °C内外の高温ガスとして、 乾燥シリンダの外周よりむき出し (すなわち、 帯状 帯等により覆われていない） のシート状物質上に直接 7 0〜 1 2 0 m/秒の高速 で吹付けて急速乾燥させる方法が実用されている。 しかしながら、 シート状物質 の片面のみがヤンキー肌で平滑となる一方、 反対面はざらざらで片艷の包装紙や ティッシュ紙やクレープ紙等にしか使用されていない。 又、 火災事故や乾燥シリ ンダの直径が巨大で輸送上の問題で大型化には問題を抱えている。 0 kg / cm 2 and heated at steam in the inside and outside, were placed in open to the outside is referred to as one large径乾燥cylinder (aka Yankee dryer, entrance of its sides Ya sheet material fully interior A canopy hood is installed in the upper half of the center, and kerosene is burned using outside air and some recirculated humid air as an air source. A practical method is to spray high-temperature gas directly onto the sheet material that is exposed from the outer periphery of the drying cylinder (that is, not covered by a band, etc.) at a high speed of 70 to 120 m / s to dry quickly. Have been. However, only one side of the sheet material is smooth with Yankee skin, while the other side is rough and used only for glossy wrapping paper, tissue paper, crepe paper, and the like. In addition, fire accidents and the diameter of the dried cylinders are huge, and there is a problem in terms of transportation due to the large size.
現に、 清純な多量の河川水を必要不可欠とする製紙産業にとって、 世界的に、 製紙工場の集約地帯は峻嶮な山稜に阻まれ狭い道路幅の地域が多い。したがって、 抄紙機幅はトラック輸送可能なドライヤ幅で制約されている。  In fact, for the paper industry, which requires a large amount of pure river water, the area where paper mills are concentrated is blocked by steep ridges and has many narrow roads worldwide. Therefore, the width of the paper machine is limited by the dryer width that can be transported by truck.
また、 疎な密閉フードに空気を供給しないで、 高圧容器である乾燥シリンダの 一部熱源として蒸発した飽和水蒸気を再利用する方法が提案されたことがある。 しかしながら、 その両側面に歩廊を擁する大容積の疎な密閉フード中の空気を皆 無とするのは至難の技である。  In addition, there has been proposed a method of reusing the evaporated saturated steam as a heat source for a part of a drying cylinder as a high-pressure container without supplying air to a sparse closed hood. However, it is a difficult technique to eliminate the air in a large-volume sparsely closed hood with walkways on both sides.
まして、 ゥ Xットパートから開口を経て連続して供給されるシート状物質ゃェ ンドレスフアブリックとともに多量の空気がフード内に供給され、 更にシート状 物質がその内部収縮力や無理な駆動による引つ張リや低温湿紙が乾燥シリンダに 取られ再三破れる時には、 一旦停止して疎な密閉フードを開放して断紙を片付け てから再スタートするので、 その度に内部は空気で置換される。 したがって、 一 般的に言われる空気の混入率を 4 % (酸素で 0 . 8 4 %、 水蒸気分圧で 9 7 . 2 7 2 k P a以下とする事は従来技術では不可能であった。  Furthermore, a large amount of air is supplied into the hood together with a sheet-shaped material, which is continuously supplied from the X-part through an opening, and the sheet-shaped material is further pulled by its internal contraction force or excessive driving. When the stretcher or low-temperature wet paper is taken off by the drying cylinder and breaks again, it stops once, opens the sparse closed hood, clears the paper, and restarts, so the inside is replaced with air each time. . Therefore, it was impossible with the conventional technology to reduce the air mixing ratio to 4% (0.84% for oxygen and 97.272kPa for water vapor partial pressure), which is generally said. .
また、 多数の開口より入る密閉フード外部からの侵入空気や湿潤状態のシート 状物質により冷却され、 密閉フード内の飽和水蒸気は湿り域に入り、 フードゃド ライヤ一フレーム等の金属表面に結露した水分が、 シート状物質上に落下して欠 点となるので実用化されていない。 Also, air that enters from the outside of the sealed hood that enters through a number of openings or wet sheets Saturated water vapor in the closed hood enters the wet area, and the moisture condensed on the metal surface of the hood, dryer, frame, etc., falls on the sheet-like material and becomes a defect because it is cooled. Not.
従来、 乾燥速度は空気中の水蒸気分圧差により進むと学者間でも信じられて来 たので、 シート蒸発面は高温に加熱して高い水蒸気分圧とし、 加熱空気はなるベ く水蒸気分圧の低い (絶対湿度の低い) 乾燥した空気が有利と考えられていた。 平成 1 0年 1 2月発行の紙パルプ技術協会編の紙パルプ製造技術全書第六巻" 紙の抄造"編 6 . 2章の 「乾燥の理論」 冒頭に、 『抄紙機における乾燥方式で現在 最も普及している形は、 乾燥シリンダに蒸気を通して加熱し、 この表面に湿紙を 押し付ける形式であるが、』 とあるように、昔、一部零細家内工業的な家庭紙工場 で直火燃焼により内部加熱する例を除き、 通常紙の乾燥は内部蒸気加熱したドラ ィヤシリンダによるのが鉄則であった。 現在の乾燥シリンダは、 第二種圧力容器 構造で、 その内部から低圧蒸気により加熱する低温シリンダからの熱伝導を主体 とする内部加熱構造である。  In the past, it has been believed among academics that the drying speed proceeds due to the difference in the partial pressure of water vapor in the air. Dry air (low in absolute humidity) was considered advantageous. The paper pulp manufacturing technology, Vol. 6, "Papermaking", edited by the Japan Association of Paper and Pulp Technology published in February 2002, Chapter 6.2, "Theory of Drying". In the most popular form, steam is passed through a drying cylinder and heated, and wet paper is pressed against this surface. ' Except for the case where the paper is internally heated, the usual rule for drying paper is to use a dryer cylinder heated internally by steam. The current drying cylinder has a second-class pressure vessel structure, and has an internal heating structure that mainly conducts heat from a low-temperature cylinder that heats the inside with low-pressure steam.
2 0 0 1年刊行のフィンランド紙パルプ技術者協会編の紙製造技術第九巻"乾 ']¾ 2 "(D 2 1 9へ一ン "hよリ 8行¾ 1こ、 『no industrial steam drying applications for paper webs exist todayj と在る如く、 種々の文献で過熱水蒸気乾燥実験の紙の物性 に及ぼす効果が謳われるにも拘らず、 未だ実用機は地球上に存在しない。 又 2 0 0 1年末にカナダ M c G i I I大学の特許が U S .Pat.6，322,667 で登録されたが、 彼等のテストは直径 1 5 9粍径のハンドシ一トを、 周囲を固定して露出した烬、 ボイラーからの蒸気配管に直結した drying chamber 中に吊るして、多量の蒸気を 次のコンデンサー排気室から逃しつつテストした物で有る。 従って本発明人が追 求している、 紙を 1 . 0 1 3 2 5 χ 1 0 2 P a下で外部からの空気の漏洩を密閉フ —ドとシール装置で完全防止しながら、 循環過熱して、 ウエットシートから持込 まれる過剰水蒸気を排気して有効活用し、 且つ耐熱性帯状帯で拘束下に過熱水蒸 気乾燥する方法とは根本的に異なる。 又彼等はリグニン豊富なパルプ使用事のみ 紙の嵩が増加すると請求しているが、 発明者はパルプの種類に拘らず、 シート中 水分が内部からの瞬間蒸発に依るプレッシャーフローで、 シー卜状物質内に多孔 質部が多数形成され嵩高と成る事を発見した。 シート状物質の乾燥方法に関して 以下の文献がある。 Papermaking technology, edited by the Finnish Association of Pulp and Paper Engineers, published in 2001, Volume 9, "Dry '] ¾ 2" (D 2 1 9 "h yori 8 lines 1", no industrial steam Despite the fact that various documents state the effect of superheated steam drying experiments on the physical properties of paper, such as drying applications for paper webs exist todayj, there is no practical machine yet on earth. At the end of the year, a patent from the University of McGi II was granted under US Pat. No. 6,322,667, but their tests exposed a handsheet with a diameter of 159 with a fixed perimeter. The paper was tested by hanging it in a drying chamber directly connected to the steam pipe from the boiler while allowing a large amount of steam to escape from the next condenser exhaust chamber. 1 3 2 5 sealing off leakage of air from chi 1 0 2 P a outside under - while completely prevented by de and the sealing device, the circulating overheated This is fundamentally different from the method of exhausting excess water vapor brought in from wet sheets and making effective use of it, and using superheated water vapor drying with restraint in a heat-resistant strip. The inventor claims that the bulk of the paper will increase, but the inventor has determined that regardless of the type of pulp, the moisture in the sheet is a pressure flow due to instantaneous evaporation from the inside, and many porous parts are present in the sheet-like material. It was found that it was formed and became bulky. There are the following documents.
非特許文献 1  Non-patent document 1
紙パルプ技術協会編の紙パルプ製造技術全書第六巻"紙の抄造' '編 6 . 2章 の 「乾燥の理論」 （平成 1 0年 1 2月発行）  "Theory of Drying" in Chapter 6.2 of Papermaking and Pulp Manufacturing Technology, Vol. 6, "Paper Making", edited by the Japan Association of Paper and Pulp Technology (published January 2012)
非特許文献 2  Non-patent document 2
フィンランド紙パルプ技術者協会編の紙製造技術第九卷"乾燥 2 " 2 1 9ぺ —ジ ( 2 0 0 1年刊行) 従来、 湿潤状態の紙 （シート ¾物質） の乾燥工程では、 低圧蒸気により加熱し た多数の乾燥シリンダを並べて紙の両面を交互にドライヤーの表面に接触させ、 力一ルゃコックリングなどで紙の平滑性を損わぬ如くするとともに、 エンドレス 構造のファブリック （帯状帯） により紙を乾燥シリンダとの間に挟んで、 紙の幅 方向での自由収縮を出来る限り抑止し、寸法安定性を高めるように努力している。 しかしながら、 紙の乾燥は乾燥シリンダ間の自由走行部で大部分行われ、 自由走 行部では紙の幅方向が大幅に収縮するので効果が少ない。  Papermaking technology, edited by the Finnish Pulp and Paper Engineers Association, Vol. 9, "Drying 2" 2 19 ぺ -di (published in 2001) Conventionally, low-pressure steam is used in the drying process of wet paper (sheets ¾ substances) A large number of drying cylinders heated by heating are arranged side by side, and both sides of the paper are alternately brought into contact with the surface of the dryer, so that the smoothness of the paper is not impaired with a power cock ring, etc. The paper is sandwiched between the drying cylinder and, so that free shrinkage in the width direction of the paper is suppressed as much as possible, and efforts are made to increase dimensional stability. However, drying of the paper is mostly performed in the free running section between the drying cylinders, and in the free running section, the width direction of the paper is greatly shrunk, so the effect is small.
また、 抄紙の高速化とともに乾燥シリンダの本数も数十本あるいは百本近くに なって装置構成が複雑化している。 したがって、 乾燥装置では、 幅方向や進行方 向での湿紙の収縮に対し一定のテンションで引っ張ってセクショナル駆動により 複雑な制御を行ったり、 ェンドレスフアブリックゃサクシヨンフアブリックロー ル等ゃェヤーボックス等を用いて、 紙切れの防止やタテ、 ョコ方向での乾燥の均 —さを高めようとしている。 しかしながら、 多数のドライヤー間やセクション間 での紙切れが頻発するため、 その都度抄紙機を停止しなければならない。 この場 合、 疎な密閉フードを開放して損紙を除去し再稼動処理をする必要があり、 多大 の時間を無駄にしたリ多くの労力を要するなど生産性が低下するとともに、 作業 の危険性も高まる。  In addition, with the speeding up of papermaking, the number of drying cylinders has increased to several tens or nearly one hundred, complicating the equipment configuration. Therefore, in the drying device, the shrinkage of the wet paper web in the width direction or the traveling direction is pulled with a certain tension to perform complicated control by sectional driving, or it is possible to use an endless fabric, a suction roll, etc. It is trying to prevent paper breakage and increase the uniformity of drying in the vertical and horizontal directions by using a layer box. However, the paper machine must be stopped each time because paper breakage frequently occurs between many dryers and sections. In this case, it is necessary to open the sparse closed hood to remove the waste paper and perform the restarting process. The nature also increases.
また、 多筒式乾燥シリンダも、 その直怪が 1 . 2〜 1 . 5 m、 更には 2 mと大径 化し、 幅も 1 O m以上のものまで出現している。 じたがって、 シリンダ錶造工場 から機械組み立て工場や最終の製紙工場までの輸送問題で苦労している。 蒸気圧 力が 1 9 . 6 1 - 3 9 . 2 3 x 1 0 4 P aと高く、 第 2種圧力容器として錶鋼製と なっている乾燥シリンダは、錶物の巣や経年劣化によって爆発する可能性があり、 人身事故等の問題を抱えている。 また、 錶物産業はその作業環境の劣悪さや、 粉 麈公害のため、 日本国内での立地は益々困難になっている。 したがって、 錶物製 の乾燥シリンダは、 海外諸国からの輸入に依存せざるを得ず、 輸送コストも含め 日本製紙産業のアキレス腱と成りつつある。 In addition, multi-cylinder drying cylinders have increased in diameter from 1.2 to 1.5 m, and even 2 m, and have appeared up to those with a width of 1 Om or more. Therefore, they are struggling with transportation problems from cylinder manufacturing plants to machine assembly plants and final paper mills. Vapor pressure is 1 9 6 1 -.. 3 9 2 3 x 1 0 4 high as P a, and錶鋼made as the two pressure vessels Drying cylinders have the potential to explode due to nests and deterioration over time, and have problems such as personal injury. In addition, the location of the food industry in Japan is becoming increasingly difficult due to its poor working environment and dust pollution. Therefore, drying cylinders made of plastics have to rely on imports from overseas countries, and they are becoming the Achilles' heel of the Japanese paper industry, including transportation costs.
更に、 最近では、 例えば新聞紙で 2 0 0 0 m毎分などといったように乾燥工程 は高速化しておリ、 内部で凝縮したドレンが乾燥シリンダの外周に共回りしてし まう場合がある。 この場合、 ドレンの排出は容易でなく、 幅方向でのドレン厚み にムラが発生するなどといった問題が発生しでいる。  Furthermore, recently, the drying process has been accelerated, for example, to 200 m / min for newspapers, and the drain condensed inside may sometimes rotate around the outer periphery of the drying cylinder. In this case, drainage is not easy, and problems such as unevenness in drain thickness in the width direction occur.
また、 乾燥に要する水蒸気量も莫大で、 紙 1 トン当りに必要な水蒸気量は、 3 〜 1 . 5 卜ン （原料や製品により異なる） を要し、 製紙産業はエネルギー多消費産 業となっている。  In addition, the amount of water vapor required for drying is enormous, and the amount of water vapor required per ton of paper requires 3 to 1.5 tons (depending on raw materials and products), and the papermaking industry becomes an energy-intensive industry. ing.
疎な密閉フードとして、近年、 その断熱性能を高め最大 6 0 °C内外の高露点（フ 一ド内の各セクションで異なるが、 実例で排気ファン出口での平均空気状態とし て、 乾球温度 1 1 0 °Cで湿球温度 6 3 °C、 露点温度 6 0 . 5 °C、 絶対湿度 0 . 1 5 In recent years, as a sparse closed hood, its insulation performance has been enhanced and a high dew point of up to 60 ° C (varies in each section in the hood, but in actual cases the average air condition at the outlet of the exhaust fan, Wet bulb temperature 63 ° C at 110 ° C, dew point temperature 60.5 ° C, absolute humidity 0.15
5 3 k g水蒸気 k g乾燥空気、 水蒸気分圧 2 0 . 2 3 8 k P a、 相対湿度 1 4 .53 kg water vapor kg dry air, water vapor partial pressure 20.2 38 kPa, relative humidity 14.
1 %)フードが開発されたが、 酸素濃度は 1 6 . 8 %もあり断紙や紙粉による火災 や粉塵爆発の危険性は解決されていない。また、所要空気量も大幅に減少したが、 貴重な蒸発水蒸気の大部分はそのまま大気中に放散される。 特に、 冬季ゃ舂雨季 では膨大な白煙 （排気の湿り空気水分が結露して発生する） 公害を起こし、 立地 によっては交通や住民に被害を与えている。 (1%) A hood was developed, but the oxygen concentration was 16.8%, and the danger of fire and dust explosion due to paper breaks and paper dust has not been resolved. In addition, the required air volume has been greatly reduced, but most of the valuable evaporated water vapor is directly released into the atmosphere. In particular, during the winter and rainy seasons, large amounts of white smoke (generated by condensation of humid air and moisture from exhaust air) cause pollution, and depending on the location, damage to traffic and residents.
1 9 9 7年 1 2月 1 1 日地球温暖化防止京都会議で、 2 0 1 0年の前後 5年間 に 1 9 9 0年比二酸化炭素（G O,)等温室効果ガスを 5 . 2 % (日本は 6 %)削減する、 世界初の法的拘束力を持つ京都議定書が採択された。 また、 2 0 0 1年 5月 8日 に大気中水蒸気量が過去 5 0年間で増加傾向で、 人間活動が原因の一つだと日本 の国立環境研究所を含む国際共同研究グループが発表した。 大気中水蒸気は二酸 化炭素を上回る温室効果があり、 成層圏での濃度増加はフロン等によ オゾン層 を破壊する動きがあるが、 濃度変化に関する総合的な検討は今回が始めてで、 従 来の地球温暖化研究の見直しになるとの予想である。 成層圏の水蒸気濃度約 4〜 6 p p mで 1 9 5 0年代半ばから約 4 5年間で約 2 p p mも増加したことを突き 止めた。 水蒸気増加量の約半分は、 大気中で濃度が増加しているメタンガスが上 空で酸化され水になったものだが、 残り半分の原因は不明としている。 日本紙パ ルプ產業は 1 9 7 3及び 1 9 7 9年の二回に亘るオイルショックによる石油価格 の暴騰によリ、 パルプ廃液の回収工程ゃチップの蒸解や洗浄工程を始め調成抄紙 工程に到る迄、 涙ぐましい努力の末やっと熱エネルギー危機を乗り越えた結果、 其の省エネルギー水準は世界でも最先端に有り、 今後更に 1 1年前の水準の 6 <½ 減のェネルギ一節減は不可能に近く、途上国に於ける植林による森林の C O 2吸収 効果の勘案を計る外無い状態にある。 1997 1 February 11 Global warming prevention Kyoto Conference: Greenhouse gases such as carbon dioxide (GO,) were reduced by 5.2% from the 1990 level in the five years before and after 2010. The world's first legally binding Kyoto Protocol has been adopted to reduce (Japan 6%). On May 8, 2001, the international joint research group including the National Institute for Environmental Studies in Japan announced that the amount of water vapor in the atmosphere had been increasing over the past 50 years, and that human activity was one of the causes. . Atmospheric water vapor has a greenhouse effect higher than that of carbon dioxide, and an increase in the concentration in the stratosphere tends to destroy the ozone layer due to chlorofluorocarbons, etc. It is expected to be a review of global warming research. Stratospheric water vapor concentration about 4 ~ At 6 ppm, they found that they increased about 2 ppm in about 45 years since the mid-1950s. Approximately half of the increase in water vapor was caused by oxidation of methane gas, whose concentration in the atmosphere increased in the air, into water, but the cause of the other half is unknown. Nippon Pulp & Paper Co., Ltd. started the pulp waste liquid recovery process, including the chip digestion and washing processes, and the preparation papermaking process, due to the oil price spikes caused by the two oil crises in 1973 and 1979. As a result of overcoming the heat energy crisis, the energy saving level is at the forefront of the world until the end of the year, and it is impossible to reduce the energy by 6 <の from the level of 11 years ago It is almost impossible to take into account the effect of forest planting in developing countries on CO 2 absorption.
また、疎な密閉フードに湿り空気を蒸発水蒸気の移送媒体として使用する限り、 露点温度は 6 0 °Cが限度である。 乾燥空気量が蒸発水蒸気量に比べて少ないと飽 和湿り空気となりフード内で結露してしまう。 この場合、 ドレンの落下で紙表面 が汚染され抄造困難となる。 また、 シート状物質のうち乾燥シリンダに接触する 側の温度は 1 0 0 °G近くに達するが、 帯状帯 （ファブリック） に接する側の温度 は、 シリンダ側から接触移動した水分によリ湿潤状態となったファブリックとの 接触表面で水分の蒸発潜熱によリ 9 0 °C内外に制約される。  Also, as long as moist air is used as a transfer medium for evaporated water vapor in a sparse closed hood, the dew point temperature is limited to 60 ° C. If the amount of dry air is smaller than the amount of evaporated water vapor, it will become saturating and moist air and form dew in the hood. In this case, the paper surface is contaminated by the fall of the drain, making papermaking difficult. In addition, the temperature of the sheet material contacting the drying cylinder reaches nearly 100 ° G, but the temperature of the sheet material contacting the belt-like band (fabric) is re-wetted by the moisture that has contacted and moved from the cylinder side. Due to the latent heat of evaporation of water on the surface in contact with the fabric, the temperature is restricted to within 90 ° C.
また、 フアブリックの空隙中はシ一卜状物質よリ蒸発した水蒸気や結露した水 分によって充満され、 フアブリック内の温度は、 湿り空気の露点温度と平衡した 外側 （6 5〜7 0 °C) と、 シート状物質と接触する内側 （8 5 °C内外） との間に 急な温度勾配があり、シー卜状物質からの蒸発が大幅に制約される。したがって、 シ一ト状物質とフアブリックとが接触した区間でのシ一ト状物質の乾燥は非常に 少なく、 大部分の乾燥は、 複数ある乾燥シリンダどうしの間のシ一ト状物質の独 立自由走行部において、 シー卜状物質表面からの直接的な水分蒸発により進行し ている。  In addition, the voids in the fabric are filled with water vapor and dew-condensed water that evaporate from the sheet-like material, and the temperature inside the fabric is balanced with the dew point temperature of the humid air (65 to 70 ° C). There is a steep temperature gradient between the sheet material and the inside (inside or outside of 85 ° C) that comes into contact with the sheet material, which greatly restricts evaporation from the sheet material. Therefore, there is very little drying of the sheet material in the area where the sheet material comes into contact with the fabric, and most of the drying is performed independently of the sheet material between the drying cylinders. In the free-running part, the water is evaporating directly from the surface of the sheet-like material.
上記の理由によリ、 せっかくェンドレスフアブリックによリ乾燥シリンダとの 間にシートを挟んで乾燥し、 シー卜状物質の自由収縮を制約して寸法安定性を高 めるように努力している力 フアブリックにより自由収縮を拘束している区間で の蒸発は僅か 2 0 0/0内外で、 8 0 0/0の蒸発は自由収縮が可能なシート状物質の独 立自由走行部で発生している。 近年、 多筒乾燥シリンダを一段設置とし、 その間に大径のサクシヨンフアブリ ックロールを乾燥シリンダに極力接近して設け、 乾燥シリンダ間の自由走行部を 短縮するようにして前記の欠点の解消を目指したものがある。 しカヽし、 エンドレ スフアブリックの厚さとシート状物質厚さとに大差が有り、 且つ、 両者は交互に その表裏が逆転するので、 乾燥シリンダとサクシヨンフアブリックロール部とで の旋回半径が大幅に異なる。 すると、 表面速度差が出て湿潤状態のシート状物質 が切断するといった問題が多発する。 For the above-mentioned reasons, endless fabrics are used to dry the sheet by sandwiching it between the drying cylinder and restrict the free shrinkage of the sheet-like material to increase dimensional stability. Evaporation in the section where free contraction is restricted by the fabric is only inside / outside of 200/0, and evaporation at 800/0 is in the free-running section of the free-shrinkable sheet material. It has occurred. In recent years, a multi-cylinder drying cylinder has been installed in one stage, and a large diameter suction roll has been provided as close as possible to the drying cylinder in the meantime, so that the free running section between the drying cylinders has been shortened to solve the above-mentioned disadvantage. There is something we aimed at. However, there is a large difference between the thickness of the endless fabric and the thickness of the sheet-like material, and since both sides are alternately reversed, the turning radius between the drying cylinder and the suction fabric roll is significantly different. . Then, there is a problem that the sheet-like substance in a wet state is cut due to a difference in the surface speed and frequently occurs.
当初は上向き下向きとセクション毎にサクシヨンフアブリックロールの位置を 変えたが、 断紙時の排紙に困り、 結局下向きのみの配置とせざるを得なかった。 この場合、 片側の乾燥シリンダからのみの乾燥で紙がドライカールしてしまうと いう大問題を引き起こした。 その対策として最近登場したのが、 本出願人による 登録済みの加熱空気衝撃乾燥法に類似した、 乾燥パー卜の終期で下向き一段乾燥 シリンダの要所にエアーキャップを設け、 1 5 0 °G内外の加熱空気を 1 O O m毎 秒で吹付け対処する試みである。 しかし、 これは、 力ール修正のみの補助乾燥能 力なので、 吹付け加熱空気の循環加熱源に低圧蒸気を使用し、 結果的に本出願人 の登録特許 (特許第 3 0 0 7 5 4 2号、 U S .Pat. 5,553,392, U S .Pat. 5,647,141、 E C .Pat.0653514) を侵害しない低露天温度範囲で使用せざるを得ぬので、 後で詳述 するような所要熱量が多大でカール修正目的に限定せざるを得ない。 発明の開示 上記の課題を解決するため、 本発明のシート状物質の製造方法は、 湿潤状態の シート状物質を乾燥する工程を有するシ一卜状物質の製造方法において、 全面接 合による密閉構造を有し且つ熱膨張による伸縮可能な内側箱体 （1 7 A ) と外側 箱体 （1 7 B ) とを断熱材を介して重ねて一体化して箱体のフード （1 7 ) を形 成し、 前記フード内部に対する前記シート状物質 （3 5 ) の入口部及び出口部を 含む該フードの貫通部のそれぞれにシール機構を設けて前記フ一ド内部を外気と 遮断し、 前記フード内部に、 平滑な外周面を有する回転体 （1 ) と該回転体の回 転に同期して移動する通気性を有する帯状帯 （3 6 ) とを設け、 前記回転体と前 記帯状帯とで前記シート状物質を挟みつつ、 前記フード内部の前記シー卜状物質 をガス循環装置を用いて乾球温度 8 0 °C以上の加熱ガスによリ循環加熱するとと もに、 前記シート状物質からの蒸発水蒸気と前記フード内部に供給する給気中水 蒸気との合計重量に略相当する水蒸気を含む露点温度 6 0 °C以上の高湿度空気を 排気し、 該排気量と乾燥空気重量で略等量の低湿度空気を前記フード内部に給気 することを特徴とする。 At first, the position of the suction roll brick was changed for each section, upward and downward, but it was difficult to discharge when the paper was cut, and as a result, it had to be arranged only downward. In this case, there was a major problem that the paper was dry-curled by drying only from one of the drying cylinders. As a countermeasure recently, an air cap was installed at a key point of the downward single-stage drying cylinder at the end of the drying part, similar to the heated air shock drying method registered by the applicant, and the inside and outside of 150 ° G This is an attempt to blow hot air at a rate of 100 m / s. However, since this is an auxiliary drying capacity only for the correction of force, low-pressure steam is used as the circulating heating source of the spray heating air, and as a result, the applicant's registered patent (Patent No. 3 0 7 7 4 No. 2, US Pat. 5,553,392, US Pat. 5,647,141, EC Pat. 0653514) must be used in a low outdoor temperature range that does not infringe. It must be limited to the purpose of correction. DISCLOSURE OF THE INVENTION In order to solve the above-mentioned problems, a method for producing a sheet-like substance of the present invention comprises: a method for producing a sheet-like substance having a step of drying a wet sheet-like substance; The inner box (17A) and the outer box (17B), which have expansion and contraction due to thermal expansion, are laminated and integrated via a heat insulating material to form a box hood (17). And an inlet and an outlet of the sheet-like substance (35) with respect to the inside of the hood. A seal mechanism is provided at each of the through-holes of the hood to block the inside of the hood from outside air, and a rotator (1) having a smooth outer peripheral surface inside the hood and synchronized with the rotation of the rotator A band-like band (36) having air permeability that moves by moving the sheet-like material between the rotating body and the band-like band while passing the sheet-like material inside the hood through a gas circulation device. It is recirculated and heated by a heating gas having a dry-bulb temperature of 80 ° C or higher, and substantially corresponds to the total weight of the vapor evaporated from the sheet-like substance and the supply water vapor supplied to the inside of the hood. High-humidity air having a dew point temperature of 60 ° C. or more containing water vapor to be exhausted, and low-humidity air having substantially the same amount as the exhaust air amount and the dry air weight are supplied into the hood.
また、 本発明のシート状物質の製造方法は、 湿潤状態のシート状物質を乾燥す る工程を有するシ一ト状物質の製造方法において、 全面接合による密閉構造を有 し且つ熱膨張による伸縮可能な内側箱体 （1 7 A ) と外側箱体 （1 7 B ) とを断 熱材を介して重ねて一体化して箱体のフード （1 7 ) を形成し、 前記フード内部 に対する前記シート状物質 （3 5 ) の入口部及び出口部を含む該フードの貫通部 のそれぞれにシール機構を設けて前記フード内部を外気と遮断し、 前記フード内 部に、 平滑な外周面を有する回転体 （1 ) と該回転体の回転に同期して移動する 通気性を有する帯状帯 （3 6 ) とを設け、 前記回転体と前記帯状帯とで前記シー ト状物質を挟みつつ、 ガス循環加熱装置を用いて前記回転体の外周から 1 0 0 °C 以上の加熱ガスを前記シート状物質に吹き付けて循環加熱することを特徴とする。 本発明のシ一ト状物質は、 全面接合による密閉構造を有し且つ熱膨張による伸 縮可能な内側箱体 （1 7 A ) と外側箱体 （1 7 B ) とを断熱材を介して重ねて一 体化して箱体のフード （1 7 ) を形成し、 前記フード内部に対するシート状物質 の入口部及び出口部を含む該フードの貫逼部のそれぞれにシール機構を設けて前 記フード内部を外気と遮断し、 前記フード内部に、 平滑な外周面を有する回転体 と該回転体の回転に同期して移動する逼気性を有する帯状帯 （3 6 ) とを設け、 前記回転体と前記帯状帯とで前記シート状物質 （3 5 ) を挟みつつ、 循環ガス熱 交換器 （3 4 ) を用いて前記回転体の外周から 1 0 0 °C以上の加熱ガスを前記シ ―卜状物質に吹き付けて循環加熱することでシート状物質を乾燥する際、 湿り域 でのシート状物質内部を直接 9 0 °C以上に加熱することによリ内部からのプレツ シヤーフロー水分蒸発でシ一卜状物質内に多孔質部を多数形成させ嵩高とし、 水 分を初め印刷インクや各種の樹脂や薬品の吸収性と含浸性を高めると共に、 水蒸 気雰囲気中で硝子転移点温度を低め原料パルプ中のへミセルローズやリグニンを 溶融させ引張り強度等物性強度を大幅に高めることを特徴とする。 Further, the method for producing a sheet-like substance of the present invention is a method for producing a sheet-like substance having a step of drying a wet-state sheet-like substance, the method comprising: The inner box (17A) and the outer box (17B) are stacked and integrated via a heat insulating material to form a hood (17) of the box, and the sheet-like shape with respect to the inside of the hood is formed. A seal mechanism is provided at each of the through-holes of the hood including the inlet and the outlet of the substance (35) to block the inside of the hood from outside air, and a rotating body having a smooth outer peripheral surface inside the hood 1) and a gas-permeable band (36) that moves in synchronization with the rotation of the rotating body, and a gas circulation heating device is provided while sandwiching the sheet-like material between the rotating body and the band. Heating gas of 100 ° C. or more from the outer periphery of the rotating body using Characterized by circulating heated by blowing into a sheet material. The sheet-like substance of the present invention has an inner box (17A) and an outer box (17B) which have a hermetically sealed structure and can be expanded and contracted by thermal expansion via a heat insulating material. A box-shaped hood (17) is formed by stacking the hood, and a sealing mechanism is provided at each of the tight portions of the hood including an inlet portion and an outlet portion of the sheet-like substance with respect to the inside of the hood, and the hood is provided. A rotator having a smooth outer peripheral surface and a tight band (36) which moves in synchronization with the rotation of the rotator are provided inside the hood to block the inside from the outside air. While the sheet-like material (35) is sandwiched between the belt-like bands, a heating gas of 100 ° C. or more from the outer periphery of the rotating body is heated using a circulating gas heat exchanger (34). When the sheet material is dried by spraying and circulating and heating the material, the inside of the sheet material in the wet area Puretsu from Li inside by the direct heating 9 0 ° C or higher to A large number of porous parts are formed in the sheet-like substance by shear flow moisture evaporation to increase the bulk, improve the absorption and impregnation of water, printing ink, various resins and chemicals, and increase the glass content in a water vapor atmosphere. It is characterized by lowering the transition point temperature and melting hemicellulose and lignin in the raw pulp to greatly increase the physical strength such as tensile strength.
本発明人は、 開発の過程でフードに対するシー卜状物質の入口部及び出口部の 通過断面を除き、 回転可能な低圧蒸気による内部加熱回転体をその側面も含め断 熱材によリ完全に密閉下で、 供給水蒸気圧力に相当する飽和温度以上の加熱ガス In the course of development, the inventor completely removed the internal heating rotator made of rotatable low-pressure steam using heat insulating materials, including the side surfaces, except for the cross section of the entrance of the sheet-like substance to the hood and the exit section of the hood during the development process. Heated gas above the saturation temperature corresponding to the supply steam pressure in a sealed state
(過熱水蒸気、 露点温度 6 0 °C以上の加熱湿り空気、 微量の溶剤を含む窒素ガス と水蒸気） により前記回転体外周より衝撃加熱すると、 該回転体の表面温度が加 熱ガス温度より一 2 5 °C程度迄加熱され、 該回転体の熱源として供給した低圧蒸 気が凝縮しないでむしろ過熱され過熱水蒸気として排出され、 むしろ該回転体へ の供給低圧蒸気を停止する方が乾燥速度を高める事を発見した。 (Superheated steam, heated humid air with a dew point temperature of 60 ° C or more, nitrogen gas containing a small amount of solvent and steam), and the surface temperature of the rotating body is lower than the heated gas temperature by impact heating. Heated to about 5 ° C, the low-pressure steam supplied as a heat source for the rotating body is not condensed but rather overheated and discharged as superheated steam.Rather, stopping the low-pressure steam supplied to the rotating body increases the drying speed. I found a thing.
したがって、 本発明のように、 シート状物質を支持する回転体の外周方向から 帯状帯に向かって加熱ガスを吹き付けることによって、 外部加熱を主体とした衝 撃エネルギーにより数倍の高速乾燥を達成し、 余剰過熱水蒸気を有効に活用する と所要熱量を約 1 8に削減出来ると共に、 1 0 0 %の過熱水蒸気雰囲気下では 加熱湿り空気中と異なり、 露点温度による制約も無く 1 0 0 °C以上のシート中温 度となリ、多量の水分下で紙中の非晶質であるリグニン (無水時の 1 5 0 °Cから 7 0 °Cへ)及びへミセルロ一ズ（ 2 1 0 °Cから 8 0 °Cへ)の硝子転移温度の低下によリ、 硝子状態からゴム状態を経て更に流動状態になり繊維相互を絡め、 乾燥終了後は 再び硝子状態に戻り物性強度値を大幅に高める。 又瞬間気化蒸発により、 使用す るパルプ種類を問わず、 例えば結晶質の ffiセルローズ主体のパルプでも、 其の内 部からのプレッシャーフローによる水分蒸発で、 シート中を多孔質化して嵩密度 が 31%も低下する、 シート状物質及び其の製造方法を提供することができる。 又 シ一ト状物質を、 通気性の耐熱帯状帯によって回転体との間で挟みつつ加熱ガス を吹き付け、 シート状物質の伸縮を抑え乍ら乾燥する事により、 水中伸度等寸法 安定性を高めると共に、 紙の表裏面を選択して乾燥条件を調整する事により、 C Dや M D方向等カール度を調整しカールの発生を未然に防止することができる。 又通気性の耐熱帯状帯により回転体との間で常時挟みつつ走行させる事により断 紙を皆無とする事が出来る。 又高温過熱水蒸気加熱により湿り域でシート内水分 を直接 1 0 0°C以上に加熱し、 微生物を略 1 0 0 %殺菌し、 カップ原紙やミルク カートン原紙等食品や医療用途に無菌紙を生産する可能性が出来た。 シーエムシ —社発行の 「食品加工の新技術」 に川合純夫氏が 「過熱蒸気流動層でのパン粉の 乾燥及び殺菌効果」 で、 1 5 0°Cの過熱水蒸気雰囲気中では約 7 0 0万個の生菌 数が 1分後に残生菌数が 1個であつたが、 1 5 0 °Cの加熱空気中では 5分後で残 生菌数が 3 6、 0 0 0個であつたと記述して居られる。又湿潤紙力増強紙や乾燥紙 力増強剤等の乾燥では、 高温過熱水蒸気加熱により湿り域でシ一ト内水分を直接 1 0 o °c以上に加熱し、 其の内部からのプレッシャーフローによる水分蒸発で、 1 0 o °c以上の過熱水蒸気が湿潤紙力増強剤や乾燥紙力増強剤と衝突し、 其の水 蒸気雰囲気中で紙力発現機構を進め、 場合に依っては必要であったエージング時 間を無くし、 抄造直後から安定した紙力の発現を可能にした。 Therefore, as in the present invention, by blowing a heating gas from the outer peripheral direction of the rotating body supporting the sheet-like material toward the belt-like belt, several times faster drying can be achieved by impact energy mainly composed of external heating. Effective use of excess superheated steam can reduce the required heat to about 18 and under a 100% superheated steam atmosphere, unlike in heated humid air, is not limited by dew point temperature and is not less than 100 ° C Lignin (from anhydrous 150 ° C to 70 ° C when anhydrous) and hemicellulose (from 210 ° C) Due to the lowering of the glass transition temperature (to 80 ° C), the state changes from the glass state through the rubber state to a more fluid state, and the fibers are entangled with each other. Also, regardless of the type of pulp used, for example, crystalline ffi-cellulose-based pulp can be made porous by instantaneous vaporization and the bulk density can be increased by evaporating water due to the pressure flow from the inside of the pulp. % Can be provided. Heating gas is blown while sandwiching the sheet-like substance between the rotating body and the air-permeable heat-resistant strip, and drying is performed while suppressing expansion and contraction of the sheet-like substance, so that dimensional stability such as underwater elongation is improved. By adjusting the drying conditions by selecting the front and back surfaces of the paper, the degree of curl in the CD and MD directions can be adjusted to prevent curling. In addition, it is cut off by running while always sandwiching between You can eliminate paper. In addition, the moisture in the sheet is directly heated to 100 ° C or higher in the wet area by high-temperature superheated steam heating to sterilize microorganisms by approximately 100%, producing aseptic paper for food and medical uses such as cup base paper and milk carton base paper. There is a possibility to do. C-Mushi — “New technology in food processing” published by Sumio Kawai in “Drying and disinfecting of bread crumbs in a superheated steam fluidized bed” with about 700,000 pieces in a 150 ° C superheated steam atmosphere The number of surviving bacteria was 1 after 1 minute, but the number of surviving bacteria was 36 and 00 after 5 minutes in 150 ° C heated air. Can be. When drying wet paper strength paper or dry paper strength agent, etc., the water in the sheet is directly heated to 10 ° C or more in the wet area by high-temperature superheated steam heating, and a pressure flow from the inside of the sheet is used. Due to the evaporation of water, superheated steam of 10 ° C or more collides with the wet strength agent and the dry strength agent, and the paper strength development mechanism is advanced in the water vapor atmosphere. The aging time was eliminated, and stable paper strength was developed immediately after papermaking.
新乾燥法の長期間にわたる開発テス卜で、 当初耐熱性の潤滑油が高価なので回 転体の軸受を大気中に露出しようと回転体側面をフードの外に出して、 その外周 面や側面の鏡板部でのシールを試みた。 しかしながら、 完全なシールが困難で外 気が浸入し易かった。 そこで、 過熱水蒸気 1 0 0 %雰囲気を保つには全回転体を フ一ド内に収納しフード内圧を 0. 1粍水中以上高めに維持してリーク水蒸気を シール面で凝縮させシールする要があることが判明した。  In a long-term development test of the new drying method, since the heat-resistant lubricating oil was initially expensive, the side of the rotating body was taken out of the hood to expose the bearing of the rotating body to the atmosphere. An attempt was made to seal the end plate. However, complete sealing was difficult and outside air was easy to infiltrate. Therefore, in order to maintain a 100% atmosphere of superheated steam, it is necessary to store all rotating bodies in a hood, maintain the hood internal pressure higher than 0.1 aqua water, and condense and seal leaked steam on the sealing surface. It turned out to be.
また、 シリンダ側面からの熱損失も大で、 前述したように、 シリンダの内部加 熱は停止できないことを確認した。 その後、 全シリンダをフード内部に全面密閉 し、 ブラッシシール方式に改造した結果、 水蒸気のリーク量は激減し、 高露点湿 リ空気はもちろん過熱水蒸気 1 0 0 %雰囲気も十分確保することが出来た。 従来技術によるフード （箱体） は、 屋根と垂れ壁のみの開放フード、 或いは多 数のシートやロープと、 駆動軸や配管、 ダク トのための開口と、 上下動の多数間 隙を有する昇降扉を有する疎な密閉フードにより囲まれて居り内部の密閉は不可 能であった。そして、低圧水蒸気によリ加熱した多量の中温低湿度空気の外気が、 乾燥シリンダ一間のポケット部を主体にフード内各所へ吹き込まれる。 シ一ト状 物質から蒸発した水蒸気とポケッ卜部を主体に吹き込まれた空気とは、 高速で走 行するシート状物質と共に入口開口部から流入する低温空気や、 多数のフード開 口や間隙からフード内部に流入した空気とともに、 フード内部で結露しないよう に相対湿度 3 0 %以下の状態で中温低湿度下に持ち去られるが、 前記開口周辺で は外部の冷気により冷却され相対湿度が大幅に高まり常に結露の危険に直面して いる。 又フードの高さ方向での内部の風圧勾配により、 上部では内圧が高く高湿 度空気が室内に漏洩して抄紙室内の天井部や周辺で結露し、 下部では負圧と成り 低温空気が多量に流入する。 其の対策にフード内部ゃ建屋天井部等を局所的に加 熱して、 更に貴重な熱エネルギーを浪費して居る。 即ち従来の抄紙機フードはヮ ンパススルーで、貴重な高温排気を循環使用する事無く其の僞外気に逃して居る。 然し高温フード内の強制潤滑システムは、 フード内の全給油管と戻り管が加熱 され、 油温が大幅に上昇し、 油粘度が低下して潤滑システムに問題が出る事が判 明した。 又フード内ベアリングケースから高温の潤滑油が蒸発し、 フ一ド内部の 低温部でフード内面に固着し、 更に操業条件の変化でフード温度が昇温すると、 溶融して落下しシート表面に付着して貴重な製品を汚染する恐れもある。 当初は 耐熱油を検討したが、 価格も非常に高く更にテストの結果 1 0 0 °C内外で揮発分 が蒸発し採用を断念した。 In addition, heat loss from the side of the cylinder was large, and as described above, it was confirmed that the internal heating of the cylinder could not be stopped. After that, all cylinders were completely sealed inside the hood and converted to a brush seal method, resulting in a drastic reduction in the amount of water vapor leakage, and a sufficient atmosphere of 100% superheated steam as well as air with high dew point and humidity. . Conventional hoods (boxes) are open hoods with only a roof and hanging walls, or a number of seats and ropes, as well as openings for drive shafts, pipes, and ducts, and ascent and descent with many vertical movement gaps. It was surrounded by a sparse closed hood with doors, making it impossible to seal the interior. Then, outside air of a large amount of medium-temperature and low-humidity air reheated by the low-pressure steam is blown into various parts of the hood mainly in the pocket portion between the drying cylinders. The water vapor evaporated from the sheet-like material and the air blown mainly through the pocket portion are the low-temperature air flowing from the inlet opening together with the sheet-like material running at high speed, and the opening of many hoods. Along with the air that flows into the hood through the mouth and gaps, it is carried away at a medium temperature and low humidity at a relative humidity of 30% or less so that dew does not form inside the hood. Are constantly increasing and face the risk of condensation. Also, due to the internal wind pressure gradient in the height direction of the hood, the internal pressure is high at the upper part and high-humidity air leaks into the room, forming dew on the ceiling and surroundings in the papermaking room, and the negative pressure is generated at the lower part, resulting in a large amount of low-temperature air. Flows into. As a countermeasure, the inside of the hood and the ceiling of the building are locally heated, and more valuable heat energy is wasted. That is, the conventional paper machine hood is bypass-through, and escapes the precious high-temperature exhaust gas to the outside air without circulating it. However, it was found that the forced lubrication system in the high-temperature hood heated all the oil supply pipes and return pipes in the hood, causing the oil temperature to rise significantly, reducing the oil viscosity and causing problems with the lubrication system. Also, the high-temperature lubricating oil evaporates from the bearing case inside the hood and adheres to the inner surface of the hood in the low-temperature part inside the hood. If the hood temperature rises due to changes in operating conditions, it melts and falls and adheres to the sheet surface. And may contaminate valuable products. Initially, heat-resistant oils were considered, but the price was very high, and as a result of the test, volatile substances evaporated inside and outside of 100 ° C and the use was abandoned.
止む無く強制潤滑システムのフード内の全給油管と戻り管を断熱材料で遮熱し, 更にべァリングのケーシングは水冷方式とし戻り油温を 9 8 °C以下 (好ましくは 9 0 °C以下） とし、 油タンク内部にも強制冷却装置を設けて供給油温を 6 0 °C以 下 (好ましくは 5 0 °C以下、 更に好ましくは 4 0 °C以下) として問題を克服する 事とした。  The oil supply pipe and return pipe in the hood of the forced lubrication system are insulated without interruption, and the casing of the bearing is water-cooled, and the return oil temperature is 98 ° C or less (preferably 90 ° C or less). However, a forced cooling device was also provided inside the oil tank to keep the supply oil temperature at 60 ° C or lower (preferably 50 ° C or lower, more preferably 40 ° C or lower) to overcome the problem.
本発明ではフ一ドの構造を全面接合による密閉構造とする。 一実施例として薄 板パネルによる接合方法を述べると、 1 m内外の幅で、 1 . 5粍内外の厚さ S U S 3 1 6の薄板を要所で折り曲げリブ状に補強し、 必要部分に熱膨張による伸縮 を可能に耐熱フレキ板又はシー卜で接続した伸縮部を介し、 全面接合によリ接続 して一体化して内側箱体を作る。 其の外側に断熱材によリ内側箱体と隔離した外 部壁より成る外側箱体とを重ねて一体化し、両箱体間の貫通部は熱膨張に対処し、 相互のリブ材間を伸縮可能な断熱材で隔離すると共に、 其の出入口部をシールし て内側箱体内を外気と完全に遮断する。  In the present invention, the structure of the hood is a hermetically sealed structure by joining the entire surface. As an example, the joining method using thin panel is described as follows. A thin sheet of SUS316 with a width of 1 m inside and outside and 1.5 mm inside and outside is bent at important places and reinforced in a rib shape, and heat is applied to necessary parts. Through an expansion / contraction part connected by a heat-resistant flexible board or sheet so that expansion and contraction by expansion is possible, the entire surface is connected and integrated to form an inner box. On the outer side, the inner box and the outer box consisting of an outer wall separated by heat insulating material are overlapped and integrated, and the penetration between the two boxes copes with thermal expansion. Isolate it with elastic insulation and seal its entrance and exit to completely block the inside of the inner box from outside air.
全面接合による内側箱体とは、 電気溶接や電子ビーム溶接、 プラズマ熔接、 レ —ザ一熔接、 圧接、 圧入、 かしめ、 曲げ、 ロウ付や、 一部メンテナンス上必要な 部分はシートパッキンを介し其の全接合面周辺をねじ接合等の接合加工により、 —体に接合した箱体である。 外側箱体は特に全面接合の要は無く、 固定構造でも 良い。 内外の箱体間の断熱厚さは箱体内部温度に依るが、 通常壁部で 1 5 0粍内 外、 天井部で 2 0 0粍内外である。 The inner box by full-surface joining includes electric welding, electron beam welding, plasma welding, and laser welding. —The box that is joined to the body by welding, crimping, press-fitting, caulking, bending, brazing, and the parts that are necessary for some maintenance are joined through sheet packing and the entire joint surface is joined by screw joining, etc. Body. The outer box does not need to be entirely joined, and may have a fixed structure. The thickness of insulation between the inner and outer boxes depends on the temperature inside the box, but it is usually 150 mm inside and outside the wall and 200 mm outside the ceiling.
内側箱体と外側箱体とを重ねて一体化したフードを、 耐熱材より成る床面にァ ンカ一ポル卜で固定した平滑表面のソールプレート上に、 耐熱弾性シ一トパツキ ンを介して高熱箱体の中央部を略中心とし熱膨張による平行移動可能に据付け、 内部への外気流入を完全に遮断する。 更に必要あれば、 外側箱体四周底面各中央 部のノックピンを中心とし、 熱膨張による平行移動が可能に耐熱パッキンを介し て据付ける。  The hood, in which the inner box and the outer box are overlapped and integrated, is placed on a smooth surface sole plate that is fixed to the floor made of heat-resistant material with anchor ports, and heat is applied through a heat-resistant elastic sheet packing. The box is installed so that it can move in parallel with the thermal expansion around the center of the box, and completely shuts out the outside air. If necessary, install via a heat-resistant packing so that it can be moved in parallel by thermal expansion, centering on the dowel pins at the center of the bottom surface of the outer box.
完成後のテストにおいて、 湿潤状態のシート状物質は、 回転シリンダと 1 . 4 7 1 k N Zm望ましくは 1 . 9 6 1 k N Zm幅以上の高張力で張られたェンドレ ス構造の耐熱通気性帯状帯との間に挟まれ、 1 0 0 °C以上の過熱ガス雰囲気下で 急速に乾燥 （衝撃乾燥） されることにより、 繊維間結合によって生ずる繊維内収 縮に起因する進行方向での破れや、 幅方向での収縮の発生を 1 0 0 %近く拘束さ れることが確認できた。 このように、 本発明では、 寸法安定性が高くタテョコ比 も少なく ドライカールも無いシートを製造することが可能である。  In the test after completion, the wet sheet material shall be heated to a rotating cylinder and endless with a tension of at least 1.471 kN Zm, preferably at least 1.951 kN Zm. And rapidly dried (impact drying) in a superheated gas atmosphere of 100 ° C or more, and in the direction of travel caused by intra-fiber contraction caused by inter-fiber bonding. It was confirmed that tearing and shrinkage in the width direction were restrained by about 100%. As described above, according to the present invention, it is possible to produce a sheet having high dimensional stability, a small stiffness ratio, and no dry curl.
リグニン及びへミセルローズは、 硝子転移温度の低下によると思われるが、 そ れぞれ過熱水蒸気雰囲気下 (水蒸気 100%)や絶対湿度が高い (lkg/kg' DA以上)加熱 湿リ空気雰囲気下ではその軟化点温度が低下し （乾燥リダニンでは 1 3 4— 2 5 0 °Cが水飽和下では 7 2 °Cに低下する）、繊維のフレキシビリティが増加するとと もに、 セルロースの水酸基と木材に含まれる他の物質との共有結合 （エーテル、 エステル結合）により湿紙強度が大幅に増加する。 1 0 0 °G以上の過熱水蒸気（又 は乾球温度 8 0 °G以上好ましくは 1 0 0 °G以上露点温度 6 0 °C以上の高温高湿度 の加熱湿り空気） により衝撃乾燥して軟化温度を下げることにより、 D R Y引張 リ強さ、 W E T引張り強さ、 水浸伸度、 破裂強さ、 などの物理的特性を従来の内 部蒸気加熱したドライヤシリンダ乾燥に比べて大幅に改善することができた。 な お、 上記の紙の各種物性値中で各種の紙強度の向上は、 針葉樹や広葉樹使用の U K P (Unbleached Kraft Pulp)や B K P (Bleached Kraft Pulp)を主原料とした湿紙は勿 論、 リグニンやへミセルローズが更に多い、 GW(Ground Wood)、 R G P (Refmer Ground wood)、 P GW (Pressurized Stone Ground wood)や、 C G P (Chemical Ground Pulp), S C P (Semi Chemical Pulp), T M P (Thermo Mechanical Pulp), C T M P ( Chemical Thermo Mechanical Pulp ) や、 近年古紙の再利用で重要な D I P (De-Inked Pulp) 等のパルプを主原料とした湿紙に於いて更に著しい事を見出し た。 従って上質紙等印刷用紙は勿論、 D I Pや機械式パルプの比率が多い新聞巻 取紙や断ポール原紙 （ライナーや中芯原紙） や白板や黄板等紙器用板紙等では更 に其の効果が顕著である。 Lignin and hemicellulose are thought to be due to a decrease in the glass transition temperature.However, they are heated under a superheated steam atmosphere (100% steam) or high in absolute humidity (lkg / kg 'DA or more), respectively. Decreases the softening point temperature (134-250 ° C for dry rhidanine to 72 ° C under water saturation), increases the flexibility of the fiber, and increases the hydroxyl groups of cellulose. Wet paper strength is greatly increased by covalent bonds (ether, ester bonds) with other substances contained in wood. Softened by shock drying with superheated steam of 100 ° G or more (or hot humid air of high temperature and high humidity with a dry bulb temperature of 80 ° G or more, preferably 100 ° G or more and a dew point temperature of 60 ° C or more) By lowering the temperature, physical properties such as DRY tensile strength, WET tensile strength, water immersion elongation, burst strength, etc., are significantly improved compared to conventional internal cylinder heated dryer cylinder drying. Was completed. Among the above physical properties of paper, the improvement of various paper strengths is due to the use of softwood and hardwood. Wet paper using KP (Unbleached Kraft Pulp) or BKP (Bleached Kraft Pulp) as a main raw material, as well as lignin and hemicellulose, GW (Ground Wood), RGP (Refmer Ground wood), P GW (Pressurized Stone Ground wood), CGP (Chemical Ground Pulp), SCP (Semi Chemical Pulp), TMP (Thermo Mechanical Pulp), CTMP (Chemical Thermo Mechanical Pulp), and DIP (De-Inked Pulp) ) Was found to be even more remarkable in wet paper made from pulp. Therefore, in addition to printing paper such as high-quality paper, the effect is further improved in newspaper rolled paper and cut base paper (liner and core base paper) and paperboard for paper containers such as white board and yellow board, which have a large proportion of DIP and mechanical pulp. Notable.
また、 従来の第二種圧力容器によるシリンダ乾燥や加熱空気乾燥では、 水分が capillary flowでシート状物質 （紙） 中を拡散し紙表面で蒸発するのに対し、 過熱 水蒸気乾燥では、 使用するパルプ種類に関係無く総てのシート状物質中で瞬間蒸 発して水蒸気となり、 pressure flowでシート状物質表面に到る。 このように、 シ リンダ乾燥や加熱空気乾燥と過熱水蒸気乾燥とでは水分の蒸発機構が全く異なリ、 過熱水蒸気乾燥では拡散抵抗が少ない。 その結果、 水銀圧入法による細孔テスタ 一によりシー卜状物質表面が数倍から数百倍に多孔質化し、 紙の見掛密度も 3 1 %低下するとともに、 シ一ト状物質の吸放湿性能は大幅に改善され、 印刷紙や インクジェット用紙での印刷インクの吸収性や、 調湿紙での吸放湿性や、 含浸用 原紙及び含浸加工紙での各種の樹脂や薬品類の吸収性と含浸性が飛躍的に向上さ れた。  In conventional cylinder drying and heating air drying using a second-class pressure vessel, moisture diffuses through sheet-like material (paper) by capillary flow and evaporates on the paper surface, whereas in superheated steam drying, the pulp used Irrespective of the type, instantaneous vaporization occurs in all sheet-like materials to form steam, and reaches the surface of the sheet-like material by pressure flow. As described above, the evaporation mechanism of water is completely different between cylinder drying or heated air drying and superheated steam drying, and diffusion resistance is small in superheated steam drying. As a result, the surface of the sheet-like material becomes porous several to several hundred times by the pore tester by the mercury intrusion method, the apparent density of the paper decreases by 31%, and the sheet-like material is absorbed and released. Moisture performance has been significantly improved, including absorption of printing ink on printing paper and inkjet paper, absorption and release of moisture on conditioning paper, and absorption of various resins and chemicals on base paper for impregnation and impregnated paper. And the impregnation properties have been dramatically improved.
0 o°c以上の加熱ガス雰囲気下で、 シート状物質及び耐熱性及び通気性を有 する帯状帯を、 外部加熱型回転体の吹込み口に極力近接させ、 又キャンバスドラ ィヤーが皆無となり、 其の乾燥速度の大幅増強と相まって内容積を従来のフ一ド に比し 1 0分の 1以下とした密閉フード内で走行させることによリ、 急速乾燥を 実現し工場の建設費を大幅に低めることが出来た。  In a heated gas atmosphere of 0 o ° c or more, bring the sheet-like substance and the heat-resistant and air-permeable strip-shaped strip as close as possible to the blowing port of the externally heated rotary body, and there is no canvas dryer. Along with the drastic increase in the drying speed, by running in a closed hood with an internal volume less than 1/10 that of the conventional hood, rapid drying was realized and the plant construction cost was significantly reduced. I was able to lower.
また、 フード内部に対するシート状物質の入口部及び出口部に、 通気性耐熱帯 状帯の両端を前記出入口部の外部に延長して配置し、 帯状体を挟みシーリングピ ンチロールと耐熱性ブラッシシールとを有するシール部を設けたので、 フード内 部に対する外気の侵入が完全に遮断され、 外気の進入防止を大幅に向上すること が出来た。当初通気性帯状帯によリ湿潤シー卜状物質を拘束可能とした回転体と、 其の周囲に過熱水蒸気及び加熱空気吹付け用キャップを設けた風洞を試作してテ ストを開始した。 内部ガス条件を計画値にする為、 循環ガスを電気ヒーターで加 熱したガスを風洞内部に吹き込み予め加熱しておく。過熱水蒸気乾燥テストでは、 湿潤シート状物質を風洞内部にファブリックにより導入するのに、 入ロスリツト 部に種々の空気遮断装置を試作装着してテストした。 然しながら狭いスリツ卜状 隙間から、 シート状物質とファブリック (帯状帯) の表面と、 其の内部に伴われ 微量の空気が入り込み、 酸素濃度計の指示が 1 . 0 %以下に出来ず苦労した。 最 初は計器誤差かと考えたが微量の空気の流入が原因と判明し、 最終的に本発明の 空気遮断方法で酸素濃度値が 0 %になり、 本格テストを開始出来た。 風洞内部の ガス条件の測定には高温過熱水蒸気対応のジルコニァ式酸素濃度計や湿度計を使 用し、 テス卜の前後に標準ガスにより必ず校正を行った。 In addition, at the inlet and outlet of the sheet-like substance with respect to the inside of the hood, both ends of the heat-resistant and air-permeable strip are arranged so as to extend outside the entrance and exit, and the sealing pinch roll and the heat-resistant brush seal are sandwiched between the strips. Since the seal portion with the seal is provided, the intrusion of outside air into the inside of the hood is completely blocked, and the prevention of outside air from entering is greatly improved. Was completed. Initially, the test was started by trial production of a rotating body capable of restraining the re-wet sheet-like substance by a gas-permeable strip and a wind tunnel provided with a superheated steam and heated air blowing cap around the rotating body. In order to set the internal gas conditions to the planned values, the gas heated by circulating gas with an electric heater is blown into the wind tunnel and heated in advance. In the superheated steam drying test, various air shutoff devices were installed on the entrance loss slits as prototypes to test the wet sheet-like material introduced into the interior of the wind tunnel by fabric. However, from the narrow slit-shaped gap, a small amount of air entered the surface of the sheet-like material and the fabric (band-like band) and the inside thereof, and the oxygen concentration meter could not read less than 1.0%. At first we thought it was an instrument error, but it turned out to be due to the inflow of a small amount of air. Finally, the oxygen concentration value was reduced to 0% by the air shutoff method of the present invention, and a full-scale test could be started. The gas conditions inside the wind tunnel were measured using a zirconia oximeter or hygrometer compatible with high-temperature superheated steam, and calibration was performed before and after the test using standard gases.
また、 シー卜状物質より蒸発した水蒸気を主とするガスをガス循環装置によつ て再加熱して 1 0 0 °C以上、 好ましくは 2 5 0 °C以上として、 蒸発室内をほぼ 1 0 0 %過熱ガスで満たすとともに、 フードに対するガスの給排気量を制御してフ —ド内の圧力を外部の圧力 （大気圧） より少し高く設定したことにより、 フード 内部に対するシート状物質の出入口部からの外気の侵入は完全に遮断され、 過熱 水蒸気乾燥が初めて実施出来た。  Further, the gas mainly containing water vapor evaporated from the sheet-like substance is reheated by a gas circulation device to 100 ° C. or more, preferably 250 ° C. or more, so that the inside of the evaporation chamber is almost 100 ° C. Filling with 0% superheated gas and controlling the gas supply / exhaust volume to the hood to set the pressure in the hood slightly higher than the external pressure (atmospheric pressure) allows the entrance of the sheet-like substance to the inside of the hood. Intrusion of outside air from the air was completely shut off, and superheated steam drying was implemented for the first time.
通気度で 7 5 0 0 C C M以上の通気性の帯状帯として、 耐熱性 （通常帯状帯温 度はガス温度より相当低い温度となる） の P E E K (ポリエーテルエーテルケ卜 ン） や P P S (ポリフエ二レンサルファイ ド） 製のファブリックベルト又は金属 製のワイヤ (ステンレス製又はブロンズ製)を使用することによリ、 乾燥収縮を拘 束した区間で急速に乾燥を進めることを可能にした。 なお、 シート状物質の平滑 性を重視する紙ではシー卜接触面に薄い表面性の良い帯状帯を縫い合わせて用い ることが好ましい。  A heat-resistant (usually, the belt temperature is considerably lower than the gas temperature) PEEK (polyetheretherketone) or PPS (polyphenylene) as a gas-permeable belt with air permeability of 7500 CCM or more. By using a fabric belt made of (lens sulfide) or a metal wire (made of stainless steel or bronze), it was possible to rapidly dry in a section where drying shrinkage was constrained. In the case of paper in which the smoothness of a sheet-like substance is emphasized, it is preferable to use a thin belt having a good surface property on the sheet contact surface.
本出願人が既に登録済みの旧特許で提案したシ一リング装置では、 シールパイ プとシーリングブラケットロール及びシ一リングピンチロールとの接触部が、 高 速化の障害になることが判明したので、 ブラッシシール方式と耐熱パツキン材に よるシール材を開発し、 漏洩する過熱水蒸気の凝結水による水シールで機械接触 部を皆無とした。 In the sealing device proposed by the applicant of the present invention, the contact portion between the seal pipe, the sealing bracket roll and the sealing pinch roll has been found to be an obstacle to high speed. Developed a seal material using a brush seal method and a heat-resistant packing material, and made mechanical contact with a water seal using condensation of leaked superheated steam. No department.
また、 乾燥装置の入口部で低温湿潤状態のシー卜状物質が低温な表面温度の為 シリンダに貼りつき取られて紙切れが多発するのを防止するために、 スチームポ ックスとサクシヨンボックスによるスチーム力一テン方式を開発し、 これを入口 部のシール機構として設置したことにより、 紙切れトラブルと空気の洩れ込みを 皆無とした。  In order to prevent the low temperature surface temperature of the wet sheet-like material from sticking to the cylinder due to the low surface temperature at the inlet of the drying device, the steam force by the steam box and the suction box is prevented. By developing the one-ten system and installing it as a seal mechanism at the entrance, there was no paper breakage and no air leakage.
本発明においては、前述の如く特殊な密閉フード内部で外気をほぼ皆無として、 過熱ガス雰囲気下での蒸発を可能としたので、 ェンドレス構造の通気性帯状帯に よリ自由収縮を拘束された区間で大部分の乾燥を終結することが出来た。 すなわ ち、 シート状物質のうち、 回転体に支持される側は従来の 1 0 o°c内外に比べ、 帯状帯による高張力下において 1 1 o°c内外となり、 更に、 水分の蒸発とともに 急速に上昇し加熱ガス温度より 2 5 °C内外低い温度まで上昇し瞬間蒸発する。 そ して、 シート状物質に含まれている水分の一部は帯状帯側に急速に移動し、 帯状 帯表面に 1 0 0 °C以上の加熱ガスを 5 O m/ s e c以上の高速で吹き付けること により、 シート状物質中水分は、 シート内部から直接瞬間蒸発し、 帯状帯の空隙 中を通過して帯状帯に近接して設置されているノズル形状又はスリッ卜形状のガ ス排出口を経てブロワにより吸引される。 したがって、 従来のように、 帯状帯中 の湿り水蒸気が 1 0 0 °C以下のシート状物質表面によって冷却され帯状帯中で結 露して湿潤状態となり、 再びシート状物質表面に戻ってシート状物質表面を再湿 潤させるといったことがなくなる。  In the present invention, as described above, since there is almost no outside air inside the special closed hood and evaporation is possible under the atmosphere of the superheated gas, the section where free shrinkage is restricted by the gas-permeable belt having the endless structure. Most of the drying was completed with. In other words, the side of the sheet-like material that is supported by the rotating body is inside and outside of 11 o ° c under the high tension of the band compared to the inside and outside of the conventional 10 o ° c. The temperature rises rapidly, rises to a temperature lower than the temperature of the heated gas by 25 ° C or more, and evaporates instantaneously. Then, part of the moisture contained in the sheet-like substance moves rapidly to the belt side, and a heating gas of 100 ° C or more is sprayed on the belt-like surface at a high speed of 5 Om / sec or more. As a result, the moisture in the sheet-like material evaporates instantaneously directly from the inside of the sheet, passes through the gap of the band-like band, passes through the nozzle-shaped or slit-shaped gas discharge port installed in close proximity to the band-shaped band. Suctioned by blower. Therefore, as in the conventional case, the moist water vapor in the belt-like band is cooled by the surface of the sheet-like material at 100 ° C or lower, condensed in the belt-like band, becomes wet, returns to the surface of the sheet-like material, and returns to the sheet-like state. There is no need to re-wet the material surface.
また、 従来のようなシリンダ側から加熱する構成と異なり、 本発明は帯状帯側 (表面側） から加熱する構成なので、 従来のようにシート状物質から蒸発した湿 リ水蒸気が帯状帯中に留まって充満しシ一ト状物質表面からの蒸発を疎害すると いったことがない。  Also, unlike the conventional configuration in which heating is performed from the cylinder side, the present invention employs a configuration in which heating is performed from the belt-shaped band side (front side), so that moist water vapor evaporated from the sheet-like material stays in the belt-shaped band as in the conventional case. It has never been filled and harmed the evaporation from the sheet-like material surface.
更に、 前述したように、 帯状帯中は従来のように結露した水分により湿潤状態 にならないので、 湿つた帯状帯を乾燥する為に従来必要だつたファブリックドラ ィャ一 （帯状帯用ドライヤー） が不用となる。 したがって、 帯状帯用ドライヤー の設置スペースが不用となるとともに、 建築コストを大幅に低減することができ る。 本発明では、 多量の加熱ガスを循環再加熱し、 フード内温度を高温加熱湿り空 気の場合で常に乾球温度 8 0 °C以上露点温度 6 0 °C以上に保つと共に、 過熱水蒸 気の場合で常に 1 0 0 °C以上に上に保ち、 低温湿潤状態のシート状物質がフード 内に導入されるフード入口部で、 スチームボックスとサクシヨンボックスにより 過熱水蒸気をシート断面を通過させ、 其の凝縮伝熱により急激にシー卜温度を昇 温させるので、 フード内での結露障害が皆無になつた。 Further, as described above, the inside of the band is not wetted by the dewed water as in the conventional case, so that a fabric dryer (band dryer) conventionally required to dry the wet band is used. Become useless. Accordingly, the installation space for the belt-shaped band dryer is not required, and the construction cost can be significantly reduced. In the present invention, a large amount of heated gas is circulated and reheated, and the temperature in the hood is always kept at a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more in the case of high-temperature heated and humid air, and superheated In the case of, always keep the temperature above 100 ° C, and at the hood inlet where the sheet material in the low-temperature and wet state is introduced into the hood, the superheated steam is passed through the cross section of the sheet by the steam box and the suction box. Since the sheet temperature was rapidly increased by the condensation heat transfer, there was no condensation in the hood.
更に、 本発明はこの様な多大の問題点を抱えながら、 従来第二種圧力容器とし て内部よリ蒸気加熱せざるを得なかったシリンダを高温ガス体による外部衝撃加 熱として、 薄い金属又は耐熱プラスチック製等の軽構造で分割して輸送すること を可能とし、現地で組立据付を可能とした。勿論既設乾燥設備の改造に際しては、 旧来の内部加熱式シリンダを転用する事を妨げない。  Further, while the present invention has such a large number of problems, a cylinder, which had to be reheated from the inside as a second-class pressure vessel in the past, is subjected to external impact heating by a high-temperature gaseous body, and is made of thin metal or It can be transported separately with a light structure made of heat-resistant plastic, and can be assembled and installed locally. Of course, when remodeling the existing drying equipment, it does not prevent the conversion of the old internal heating cylinder.
本発明は、 回転体外周からの 1 0 0 °C以上の高温加熱ガスの衝撃噴射による熱 伝達と一部ガス熱放射を主体とする外部加熱方式であり、 根本的にその乾燥機構 が異なる。 もちろん、 乾燥初期は外部からの高温ガス加熱により回転体温度も上 昇し内部からもシー卜状物質を間接加熱するが、 乾燥中期以降ではシー卜温度が 回転体温度よリ高くなり外部加熱のみになる。 上記の如く内部加熱しない回転体 (乾燥シリンダ) は、 今まで地球上に存在しなかった。  The present invention is an external heating system mainly based on heat transfer from an outer periphery of a rotating body by impact injection of a high-temperature heating gas of 100 ° C. or higher and partial heat radiation, and its drying mechanism is fundamentally different. Of course, in the early stage of drying, the temperature of the rotating body also rises due to high-temperature gas heating from the outside, and the sheet-like material is indirectly heated from the inside. become. The rotating body (drying cylinder) without internal heating as described above has never existed on the earth.
以上のように、 紙や湿式法不織布等、 織物類とは異なり湿潤状態では破断し易 く、 多数のロール類を経由して進行方向に負荷される連続したテンションにより 幅方向に大幅に収縮し、 乾燥工程で水分の蒸発とともに繊維間結合が生成して繊 維内収縮を生ずる紙ゃ不織布等のシート状物質を、 外気と遮断した大気圧よリ僅 か数粍水柱程度内外の微圧の加圧状態とした密閉フード内で、 1 0 0 °C以上の加 熱ガス、 即ち 1 0 0 °G以上の過熱水蒸気又は乾球温度 8 0 °C以上露天温度 6 0 °C 以上の加熱湿リ空気、 若しくは 1 0 0 °C以上の微量の溶剤ガスを含む 8 0 %以上 の窒素ガスと 1 0 %内外の水蒸気との混合ガス等の雰囲気下で、 その片面は外部 加熱を主体とする回転可能な回転体に接触させ、 反対面を高張力下でェンドレス 構造の通気性耐熱帯状帯により挾み、 湿潤状態のシート状物質の伸縮を拘束しな がら急速に乾燥させ、 フード内の高温ガスと、 通気性の耐熱帯状帯を経てシート 状物質から蒸発した水蒸気を主成分とするガスとを吸込口を経てガス排出部より 吸引し、 熱源を有するガス循環加熱装置で循環再加熱して 1 0 0 °C以上で回転体 外周よリ吹き付けるとともに、 余剰分をガス排出部によリ吸引して他の熱源とし て利用することによって、 シート状物質を従来技術の約 6倍以上の高速下で、 且 約 1 8以下の所要熱量で省エネルギー下に乾燥できる。 As described above, unlike fabrics such as paper and wet-laid nonwoven fabrics, they are easily broken in the wet state, and significantly shrink in the width direction due to continuous tension applied in the traveling direction via many rolls. However, in the drying process, sheet-like materials such as paper and non-woven fabric that shrink in the fiber due to the formation of fiber-to-fiber bonds with the evaporation of moisture during the drying process, are slightly pressured from inside to outside by a few millimeters from the atmospheric pressure when they are shut off from the outside air. In a pressurized closed hood, heated gas of 100 ° C or more, that is, superheated steam of 100 ° G or more or dry bulb temperature of 80 ° C or more Open-air temperature of 60 ° C or more In an atmosphere such as air or a mixed gas of 80% or more of nitrogen gas containing a small amount of solvent gas of 100 ° C or more and 10% or more of water vapor inside and outside, one side is mainly heated externally. Contact with a rotatable rotating body, and on the opposite side under high tension, endless structure It is sandwiched by strips, dried quickly while restraining the expansion and contraction of the wet sheet material, and contains hot gas in the hood and water vapor evaporated from the sheet material through the heat-resistant, air-permeable strip. From the gas outlet via the inlet Suction, re-circulate with a gas circulation heating device having a heat source, and re-blow from the outer periphery of the rotating body at 100 ° C or higher, and use excess gas as the other heat source by sucking it back by the gas discharge unit Thereby, the sheet material can be dried at a high speed of about 6 times or more of the related art and with a required heat amount of about 18 or less and energy saving.
従来の乾燥方法において、 内部加熱シリンダと帯状帯 （ファブリック） とによ リシー卜状物質の乾燥収縮を拘束した区間では前述した理由によリ乾燥が遅いが、 本発明は過熱水蒸気主体に近い雰囲気下で、 高温下に高速衝撃乾燥によリ略無酸 素状態の乾燥を実現出来る。 このとき、 高温化による火傷や酸素濃度低下による 酸欠の危険性を避ける必要から、 運転中のフード内への立入りを防止する要が有 リ、 フードの開閉装置はロック機構を設け運転中の出入を不可能とする。 又フー ド内部容積を成るべく狭めて建設費を低減させ、 加熱ガスによる内部循環熱効率 を高める為、 内部に設置されていた歩廊を極力狭め、 本発明においては工事用組 立式足場をフード外に設置し所要スペースを大幅に削減した。  In the conventional drying method, in the section where drying shrinkage of the rectiform substance is restrained by the internal heating cylinder and the band-like band (fabric), the re-drying is slow for the above-described reason. Under the high temperature, it is possible to realize almost oxygen-free drying by high-speed impact drying at high temperature. At this time, it is necessary to prevent entry into the hood during operation because it is necessary to avoid the danger of burns due to high temperature and oxygen deficiency due to a decrease in oxygen concentration. It is impossible to get in and out. Also, in order to reduce the construction cost by reducing the internal volume of the hood as much as possible and to increase the internal circulation heat efficiency of the heated gas, the corridor installed inside was narrowed as much as possible. The space required has been greatly reduced.
図面の簡単な説明 図 1は、 本発明の乾燥装置のうち第 1実施形態を示す側面図である。 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a first embodiment of the drying apparatus of the present invention.
図 2は、 図 1の側断面図である。  FIG. 2 is a side sectional view of FIG.
0 3は、 本発明の乾燥装置のうち第 1実施形態の加熱ガスの循環系統を示すフ ロー線図である。  FIG. 3 is a flow chart showing a heating gas circulation system according to the first embodiment of the drying apparatus of the present invention.
図 4は、 フードに対するシート状物質の入口部を示す図である。  FIG. 4 is a diagram showing an inlet portion of the sheet-like substance to the hood.
図 5は、 フードに対するシー卜状物質の出口部を示す図である。  FIG. 5 is a diagram showing an outlet of the sheet-like substance with respect to the hood.
図 6は、 回転シリンダの構造の一例を示す縦断面図である。  FIG. 6 is a longitudinal sectional view showing an example of the structure of the rotary cylinder.
図 7は、 図 6の Z— Z矢視図である。  FIG. 7 is a view taken in the direction of arrows Z-Z in FIG.
図 8は、 本発明の乾燥装置のうち第 2実施形態を示す側面図である。  FIG. 8 is a side view showing a second embodiment of the drying apparatus of the present invention.
図 9は、 図 8の側断面図である。 図 1 0は、 本発明の乾燥装置のうち第 2実施形態の加熱ガスの循環系統を示す フロー線図である。 FIG. 9 is a side sectional view of FIG. FIG. 10 is a flow diagram showing a heating gas circulation system according to the second embodiment of the drying apparatus of the present invention.
図 1 1は、 本発明の乾燥装置のうち第 3実施形態を示す側面図である。  FIG. 11 is a side view showing a third embodiment of the drying apparatus of the present invention.
図 1 2は、 本発明の乾燥装置のうち第 3実施形態の加熱ガスの循環系統を示す フロー線図ある。  FIG. 12 is a flow diagram showing a heating gas circulation system according to a third embodiment of the drying apparatus of the present invention.
図 1 3は、 本発明の乾燥装置のうち第 4実施形態を示す側面図である。  FIG. 13 is a side view showing a fourth embodiment of the drying apparatus of the present invention.
図 1 4は、 本発明の乾燥装置のうち第 5実施形態を示す側面図である。  FIG. 14 is a side view showing a fifth embodiment of the drying apparatus of the present invention.
図 1 5は、 本発明の乾燥装置のうち第 6実施形態を示す側面図である。  FIG. 15 is a side view showing a sixth embodiment of the drying apparatus of the present invention.
図 1 6は、 本発明の乾燥装置のうち第 7実施形態を示す側面図である。  FIG. 16 is a side view showing a seventh embodiment of the drying apparatus of the present invention.
図 1 7は、 図 1 6の側断面図である。  FIG. 17 is a side sectional view of FIG.
図 1 8は、 本発明の乾燥装置のうち第 7実施形態での室内配置例を、 建屋を操 作側で切断して示す側面図である。  FIG. 18 is a side view showing an example of the indoor arrangement of the drying apparatus according to the seventh embodiment of the present invention, in which a building is cut off on the operation side.
図 1 9は、 本発明の乾燥装置のうち第 7実施形態での室内配置例を、 建屋をフ 一ドのシ一卜出口で切断して示す断面図である。  FIG. 19 is a cross-sectional view showing an example of the indoor arrangement in the seventh embodiment of the drying apparatus of the present invention, in which a building is cut at a seat exit of a hood.
図 2 0は、 本発明の乾燥装置のうち第 7実施形態での密閉フードの、 中央抄紙 機幅方向の断面図である。  FIG. 20 is a cross-sectional view of the closed hood in the width direction of the central paper machine in the seventh embodiment of the drying apparatus of the present invention.
図 2 1は、 本発明の乾燥装置のうち第 7実施形態での建屋屋上配置を示す平面 図である。  FIG. 21 is a plan view showing an arrangement on a building roof in the seventh embodiment of the drying apparatus of the present invention.
図 2 2は、 本発明の乾燥装置のうち外燃方式循環ガス熱交換器を含む全体平面 図である。  FIG. 22 is an overall plan view of the drying apparatus of the present invention including the external combustion type circulating gas heat exchanger.
図 2 3は、 本発明の乾燥装置のうち外燃方式循環ガス熱交換器を含む全体断面 図である。  FIG. 23 is an overall sectional view of the drying device of the present invention including the external combustion type circulating gas heat exchanger.
図 2 4は、 本発明の乾燥方法を実施した場合の絶対湿度と熱交換所要熱量を示 すグラフである。  FIG. 24 is a graph showing the absolute humidity and the amount of heat required for heat exchange when the drying method of the present invention is performed.
図 2 5は、 本発明の乾燥方法を実施した場合の高温高湿度空気と過熱蒸気の関 係を示すモリ一 (Morrie)線図である。本発明の範囲は過熱水蒸気領域を暗示する帯 域 Aと、 高温高湿度空気の領域 Bであり、 従来技術の領域は Cである。 猶絶対湿 度の延長線と相対湿度 1 0 0 %との交点が露点温度を示す。  FIG. 25 is a Morrie diagram showing the relationship between high-temperature, high-humidity air and superheated steam when the drying method of the present invention is performed. The scope of the present invention is zone A, which implies a superheated steam zone, and zone B of high-temperature, high-humidity air. The intersection of the extension of absolute humidity and 100% relative humidity indicates the dew point temperature.
図 2 6は、本発明の乾燥方法を抄紙機の多筒式乾燥シリンダに実施した場合の、 シート及びェンドレス通気性帯状体内の温度分布を示す温度分布図である。 FIG. 26 shows a case where the drying method of the present invention is applied to a multi-cylinder drying cylinder of a paper machine. It is a temperature distribution figure which shows the temperature distribution in a sheet and an endless breathable band.
図 2 7は、本発明の乾燥方法を実施した場合の乾燥紙 （NBCTMP)の弓 I張り強さ (DRY)と見かけ密度対ガス状態及び衝撃温度の関係を示すグラフである。  FIG. 27 is a graph showing the relationship between the bow I tensile strength (DRY) of dry paper (NBCTMP) and the apparent density versus the gas state and impact temperature when the drying method of the present invention is carried out.
図 2 8は、 本発明の乾燥方法を実施した場合の乾燥紙 (DIP)の引張り強さ (DRY) と見かけ密度対ガス状態及び衝撃温度の関係を示すグラフである。  FIG. 28 is a graph showing the relationship between the tensile strength (DRY) of dry paper (DIP) and apparent density versus gas state and impact temperature when the drying method of the present invention is performed.
図 2 9は、 本発明の乾燥方法を実施した場合の乾燥紙 (NBCTMP)の引張り強さ (WET)と見かけ密度対ガス状態及び衝撃温度の関係を示すグラフである。  FIG. 29 is a graph showing the relationship between tensile strength (WET), apparent density, gas state, and impact temperature of dried paper (NBCTMP) when the drying method of the present invention was performed.
図 3 0は、 本発明の乾燥方法を実施した場合の乾燥紙 (DIP)の引張リ強さ (WET) と見かけ密度対ガス状態及び衝撃温度の関係を示すグラフである。  FIG. 30 is a graph showing the relationship between tensile strength (WET) of dry paper (DIP) and apparent density versus gas state and impact temperature when the drying method of the present invention is carried out.
図 3 1は、 本発明の乾燥方法を実施した場合の乾燥速度とガス状態及び衝撃温 度の関係を示すグラフである。  FIG. 31 is a graph showing the relationship between the drying speed, the gas state, and the impact temperature when the drying method of the present invention is performed.
図 3 2は、 本発明の乾燥方法を実施した場合の乾燥速度とガス状態及び衝撃速 度の関係を示すグラフである。  FIG. 32 is a graph showing the relationship between the drying speed, the gas state, and the impact speed when the drying method of the present invention is performed.
図 3 3は、 本発明の乾燥方法を実施した場合の乾燥速度とガス状態及びノズル 開口率の関係を示すグラフである。  FIG. 33 is a graph showing the relationship between the drying speed, the gas state, and the nozzle opening ratio when the drying method of the present invention is performed.
図 3 4は、 本発明の乾燥方法を実施した場合の乾燥速度とガス状態及びフアブ リック通気度の関係を示すグラフである。  FIG. 34 is a graph showing the relationship between the drying speed, the gas state, and the fabric air permeability when the drying method of the present invention is performed.
図 3 5は、 本発明の乾燥方法を実施した場合の絶対湿度と熱効率を示すグラフ める。  FIG. 35 is a graph showing absolute humidity and thermal efficiency when the drying method of the present invention is performed.
図 3 6は、 従来技術のシリンダー乾燥による、 シート断面の電子顕微鏡写真を 示す。  FIG. 36 shows an electron micrograph of a cross section of the sheet obtained by the conventional cylinder drying.
図 3 7は、 本発明の乾燥方法を実施した場合の過熱水蒸気乾燥による、 多数の 多孔質部を有するシート断面の電子顕微鏡写真を示す。  FIG. 37 shows an electron micrograph of a cross section of a sheet having a large number of porous portions by superheated steam drying when the drying method of the present invention is performed.
図 3 8は、 本発明の乾燥方法を卖施した場合の加熱空気乾燥による、 シート断 面の電子顕微鏡写真を示す。  FIG. 38 shows an electron micrograph of a cross section of a sheet by heating air drying when the drying method of the present invention is applied.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
《第 1実施形態》 以下、 本発明のシート状物質の乾燥方法及び乾燥装置について説明する。 図 1 は本発明のシート状物質の乾燥方法に用いる乾燥装置の第 1実施形態を示す側面 図、 図 2は図 1の側断面図、 図 3は加熱ガスの循環系統図、 図 4は全面接合密閉 箱体構造のフードに対するシート状物質の入口部を示す図、 図 5はフードに対す るシート状物質の出口部を示す図、 図 6は回転体を示す側方断面図、 図 7は図 6 の Z— Z矢視図である。 << 1st Embodiment >> Hereinafter, the method and apparatus for drying a sheet-like substance of the present invention will be described. FIG. 1 is a side view showing a first embodiment of a drying apparatus used in the method for drying a sheet-like substance of the present invention, FIG. 2 is a side sectional view of FIG. 1, FIG. 3 is a diagram of a circulation system of a heating gas, and FIG. FIG. 5 is a diagram showing an inlet portion of a sheet-like substance with respect to a hood having a joint-closed box structure, FIG. 5 is a diagram showing an outlet portion of the sheet-like substance with respect to the hood, FIG. 6 is a side sectional view showing a rotating body, and FIG. FIG. 7 is a view taken in the direction of arrows Z—Z in FIG. 6.
図 1、 図 2、 図 3に示す D S 1のように、 湿潤状態のシート状物質 （紙） を乾 燥するための乾燥装置は、 シート状物質 3 5の一方の面を支持しつつ回転する複 数の多筒式回転体 (回転シリンダ) 1と、 シート状物質 3 5の他方の面に接し、 回転体 1 との間でシ一卜状物質 3 5を挟みつつ回転体 1の回転に同期して移動す る通気性の耐熱性を有するファブリック （帯状帯） 3 6と、 回転体 1の外周方向 から、 シー卜状物質 3 5を挟んでいるフアブリック 3 6に向けて加熱ガスを吹き 付けるガス吹出口 （加熱ガス供給部） 1 9と吸込口 2 2とを備えている。 シート 状物質 3 5を挟むこれら回転体 1及ぴフアブリック 3 6は、 全面接合により密閉 された箱体構造のフード 1 フ内部に設けられている。 ファブリック 3 6は環状に 形成されたェンドレス構造となっている。 第 1実施形態は回転体 1間のポケット 部の空間を最大限に活用して、 夫々対を成す各 2本のサクシヨンフアブリックロ —ル (帯状帯ロール) 8間で、 上下のフアブリック 3 6 ( 3 6 A、 3 6 B ) とシ 一ト状物質 3 5の受け渡しを行うものである。  As shown in Fig. 1, Fig. 2, and Fig. 3, the drying device for drying the wet sheet material (paper) rotates while supporting one surface of the sheet material 35 as shown in DS1 shown in Figs. A plurality of multi-cylinder rotating bodies (rotating cylinders) 1 are in contact with the other surface of the sheet-like substance 35, and rotate the rotating body 1 while sandwiching the sheet-like substance 35 between the rotating bodies 1. Heated gas is blown from the heat-resistant fabric (strip) 36 that moves in synchronism to the fabric 36 that sandwiches the sheet-like substance 35 from the outer periphery of the rotating body 1. A gas outlet (heating gas supply unit) 19 and a suction port 22 are provided. The rotating body 1 and the fabric 36 sandwiching the sheet-like substance 35 are provided inside a hood 1 having a box structure that is hermetically sealed by full-surface joining. The fabric 36 has an endless structure formed in an annular shape. In the first embodiment, the space in the pocket portion between the rotating bodies 1 is utilized to the utmost, and the upper and lower fabric bricks 3 are formed between each pair of two suction roll rolls (band-shaped rolls) 8. 6 (36A, 36B) and sheet material 35.
乾燥装置 D S 1は、 抄紙機楝建屋の独立した機械基礎 1 3と、 この機械基礎 1 3上にアンカーポル卜によリ固定されたソールプレー卜 1 4と、 ソ一ルプレート 1 4 (こ組み上げられたにドライヤ一フレーム 4とを備えている。 回転体 1は、 ド ライヤ一フレーム 4の内側に設けられている。回転体 1はその表面（シリンダ面） でシート状物質 3 5を支持するようになっている。 回転体 1には回転軸 （シリン ダ軸） 2が設けられており、 回転体軸受 （シリンダ軸受、 回転体用回転体軸受） 3によって回転可能に支持されている。 シリンダ軸受 3はドライヤーフレーム 4 に設置されている。 本実施形態において、 回転体 1は図 1に示すように複数設け られており、 上下 2段に千鳥型に配置されている。 複数の回転体 1のそれぞれを 上下 2段千鳥状に配置することにより、 工場スペースを有効に利用する上で有利 である。 猶、 回転体 1の配置構成を 1段式として、 シート状物質 3 5がカールし ない様に各群別に交互に上向きと下向きに設置したり、 紙切れ時の排紙を重視し て下向き専用に設置したり、 竪型に回転体 1をそれぞれ左向きや右向きと数段ず つ設置したり、 それらを混合して設置することもできる。 The drying device DS 1 is composed of an independent mechanical foundation 13 of the paper machine connection building, a sole plate 14 fixed on the mechanical foundation 13 by an anchor port, and a sole plate 14 It has the assembled dryer frame 4. The rotating body 1 is provided inside the dryer frame 4. The rotating body 1 supports the sheet material 35 on its surface (cylinder surface). The rotating body 1 is provided with a rotating shaft (cylinder shaft) 2, and is rotatably supported by rotating body bearings (cylinder bearings, rotating body bearings for the rotating body) 3. The cylinder bearings 3 are installed on the dryer frame 4. In the present embodiment, a plurality of rotating bodies 1 are provided as shown in Fig. 1, and are arranged in a staggered manner in two upper and lower stages. Place each of 1 in a two-tiered staggered fashion Advantages in effective use of factory space It is. The rotating body 1 is arranged in a one-stage configuration, and the sheet-like substances 35 are alternately installed upward and downward in each group so that they do not curl. It can be installed, the rotating body 1 can be installed vertically and several steps leftward or rightward, or a mixture of them.
上下 2段に設置された複数の回転体 1のうち、 上段の回転体 1には、 該上段の 回転体 1に接続した回転軸 2の中心よリ上部側に配置されたキヤノピ一フード (ガスキヤップフ一ド) 1 5がそれぞれ設けられている。 キヤノビ一フード 1 5 はドライヤーフレーム 4に対して昇降装置 1 6 (図 2参照）により上下動可能（昇 降可能） に支持されている。 同様に、 下段の回転体 1には、 該下段の回転体 1に 接続した回転軸 2の中心よリ下部側に配置されたキヤノピーフード 1 5がそれぞ れ設けられている。 下段側のキヤノビ一フード 1 5のそれぞれドライヤーフレー ム 4に対して昇降装置 1 6により上下動可能に支持されている。 キヤノビ一フー ド 1 5は耐熱性のパネルにより構成されている。  Of the plurality of rotating bodies 1 installed in the upper and lower stages, the upper rotating body 1 has a canopy hood (gas cap) disposed above the center of the rotating shaft 2 connected to the upper rotating body 1. 1) 15 are provided respectively. The canopy hood 15 is supported on the dryer frame 4 by a lifting device 16 (see FIG. 2) so as to be able to move up and down (up and down). Similarly, the lower rotating body 1 is provided with a canopy hood 15 disposed below the center of the rotating shaft 2 connected to the lower rotating body 1. Each of the lower frames of the canopy hood 15 is supported by a lifting device 16 so as to be vertically movable with respect to the dryer frame 4. Canon hood 15 is composed of heat-resistant panels.
前述したように、 回転体 1は複数設けられているとともに、 複数の回転体 1の それぞれは上下 2段に配置されている。 そして、 シート状物質 3 5は、 複数の回 転体 1に支持されつつ、 図 1中、 入口部 6 0側から出口部 6 1側に走行されるよ うになつている。 また、 図 1に示すように、 ファブリック 3 6は、 上段側の回転 体 1に支持されたシート状物質 3 5を挟むように設けられた上段側フアブリック (上段帯状帯) 3 6 Aと、 下段側の回転体 1に支持されたシー卜状物質 3 5を挟 むように設けられた下段側ファブリック (下段帯状帯) 3 6 Bとからなっている。 これら上段側及ぴ下段側フアブリック 3 6 A , 3 6 Bのそれぞれは、 環状に形成 されたェンドレス構造となっている。  As described above, the plurality of rotators 1 are provided, and each of the plurality of rotators 1 is arranged in upper and lower two stages. The sheet-like substance 35 is supported by the plurality of rotating bodies 1 and travels from the entrance 60 to the exit 61 in FIG. Also, as shown in FIG. 1, the fabric 36 includes an upper fabric (upper band-like band) 36 A provided so as to sandwich the sheet-like substance 35 supported by the upper rotating body 1, and a lower fabric 36. The lower fabric (lower band-like band) 36 B provided so as to sandwich the sheet-like material 35 supported by the rotating body 1 on the side. Each of the upper and lower fabrics 36 A and 36 B has an endless structure formed in an annular shape.
回転体 1に対して近接する位置には、 サクシヨンフアブリックロール 8が設け られている。このサクシヨンフアブリックロール 8はフアブリックロ一ル軸受（帯 状帯用回転体軸受） 9によって回転可能に支持されている。 ファブリックロール 軸受 9はドライヤーフレーム 4に設置される。 ここで、 サクシヨンファブリック ロール 8は、 1本の回転シリンダ 1に対して 2本配置されている。 サクシヨンフ アブリックロール 8は、 ファブリック 3 6を支持する。 フード 1 7内に設けられ ている回転体軸受 3やファブリックロール軸受 9は、 強制循環システム （強制循 環機構） により冷却される。 強制循環システムは常温のフード 1 7外部に設けら れており、 軸受 3、 9を水冷あるいは冷媒方式で冷却する。 強制循環システムは 冷却した油を循環して軸受 3、 9に供給する。 強制潤滑システムのフード内の全 給油管と戻り管は断熱材料で遮熱された断熱保冷構造となっており、 フード内に おいて最短距離に設定されている。 そして、 軸受 3、 9のケ一シングは水冷方式 とし戻り油温度を 9 8 °C以下好ましくは 9 0 °C以下とし、 油タンク内部にも強制 冷却装置を設けて供給油温を 6 0 °C以下好ましくは 5 0 °C以下としている。なお、 排油管の戻リ集合部に冷却した油を供給して冷却し、 更に中間冷却槽を設けても よい。 更に、 軸受 3、 9は保温の上水冷構造としてもよい。 At a position close to the rotating body 1, a suction fabric roll 8 is provided. The suction fabric roll 8 is rotatably supported by a fabric roller bearing (rotating body bearing for a belt-like band) 9. The fabric roll bearing 9 is installed on the dryer frame 4. Here, two suction fabric rolls 8 are arranged for one rotating cylinder 1. The sacrifice abrick roll 8 supports the fabric 36. The rotating body bearing 3 and the fabric roll bearing 9 provided in the hood 17 are provided with a forced circulation system (forced circulation system). (Ring mechanism). The forced circulation system is provided outside the hood 17 at normal temperature, and cools the bearings 3 and 9 by water cooling or a refrigerant system. The forced circulation system circulates the cooled oil and supplies it to bearings 3 and 9. All oil supply pipes and return pipes in the hood of the forced lubrication system have an adiabatic insulation structure insulated by heat-insulating material, and are set to the shortest distance in the hood. The casings of bearings 3 and 9 are water-cooled, the return oil temperature is 98 ° C or less, preferably 90 ° C or less, and a forced cooling device is also provided inside the oil tank to raise the supply oil temperature to 60 ° C. C or less, preferably 50 ° C. or less. In addition, the cooled oil may be supplied to the return collecting part of the oil drainage pipe to cool it, and further, an intermediate cooling tank may be provided. Further, the bearings 3 and 9 may have a heat-retaining and water-cooling structure.
上段側及び下段側ファブリック 3 6 A , 3 6 Bのそれぞれは、 上段側及び下段 側回転体 1の間に設けられたサクシヨンファブリックロール 8を迂回点として、 上段側と下段側とでシート状物質 3 5を受け渡す。 シート状物質 3 5は、 上下段 の回転体 1及び上下段のフアブリック 3 6に交互に挟み込まれながら走行する。 フード 1 フ内の隅部には、 ファブリックロール （帯状帯ロール） 1 0がそれぞ れ設けられており、 ファブリックロール 1 0に対して所定位置にはファブリック テンションロール （帯状帯ロール） 1 1が設けられている。 そして、 これらファ プリックロール 1 0及びフアブリックテンションロール 1 1及びサクションファ ブリックロール 8によって、 環状のェンドレス構造を有するフアブリック (帯状 帯） 3 6力 全密閉されたフード 1 7内を周回可能に支持されている。 フアブリ ック 3 6は通気性を有しており、 回転体 1との間でシート状物質 3 5を挟むよう に支持する。  Each of the upper and lower fabrics 36 A and 36 B has a sheet shape on the upper and lower sides with the suction fabric roll 8 provided between the upper and lower rotating bodies 1 as a detour point. Hand over substance 3 5. The sheet material 35 travels while being alternately sandwiched between the upper and lower rotating bodies 1 and the upper and lower fabrics 36. A fabric roll (band-shaped band roll) 10 is provided at each corner of the hood 1 and a fabric tension roll (band-shaped band roll) 11 is provided at a predetermined position with respect to the fabric roll 10. Is provided. The fabric roll 10, the fabric tension roll 11, and the suction fabric roll 8 support a fabric 36 having an annular endless structure so that it can circulate in the completely sealed hood 17. Have been. The fabric 36 has air permeability, and supports the rotary member 1 so as to sandwich the sheet material 35 therebetween.
ファブリック 3 6は通気度で 7 , 5 0 0 G C M ( c m3/ c m2/分） 即ち 1 2 , 5 0 O m3/m2/時以上の通気性を有するとともに耐熱性を有する物質によって搆成さ れている。 例えば、 ファブリック 3 6は、 P E E K (ポリエーテルエ一テルケト ン） や P P S (ポリフエ二レンサルファイド） などによって構成されている。 上段及び下段のキヤノビ一フード 1 5、 回転体 1、 ファブリック 3 6、 サクシ ョンフアブリックロール 8やドライヤーフレーム 4を含む乾燥パート全体は、 厚 さ 1 0 0粍好ましくは壁部 1 5 0粍天井部 2 0 0粍以上の耐熱性の断熱パネルに よって構成されたフード 1 7に囲まれている。 フード 1 7の内部は 1 0 0 °C以上 のガス雰囲気に設定されている。 ここで、 キヤノビ一フード 1 5内の吹出口 1 9 と吸込口 2 2と回転体 1の表面間は、 距離 1 0から 2 5粍内外を隔てた蒸発空間 8 0 (図 3参照） となっている。 シート状物質 3 5を挟む回転体 1の外周部及び フアブリック 3 6は蒸発空間 8 0の内部に配置された構成となっている。 フード 1 7の一部には点検掃除等の際にこのフード 1 7を開閉するた 、 フード内部の シール性の完璧を期し、 相互に一段以上の段差を着け接触面にシール用の一例と してシリコンスポンジ等の耐熱パッキンを介して圧着可能とした、 電動若しくは 空圧駆動のフード開閉装置 1 8が設けられている。 開閉装置 1 8は二枚の両開き 戸でも一枚の片開き戸でも良い。 The fabric 36 has an air permeability of 7,500 GCM (cm 3 / cm 2 / min), that is, a material having air permeability of 12, 50 O m 3 / m 2 / hour or more and heat resistance. Has been established. For example, the fabric 36 is made of PEEK (polyetheretherketone) or PPS (polyphenylene sulfide). The entire drying part, including the upper and lower canopy hood 15, rotating body 1, fabric 36, suction fabric roll 8 and dryer frame 4, has a thickness of 100 mm, preferably a wall of 150 mm. The ceiling is surrounded by a hood 17 composed of heat-insulating panels with heat resistance of 200 mm or more. Over 100 ° C inside hood 17 The gas atmosphere is set. Here, an evaporating space 80 (see Fig. 3) between the air outlet 19 in the canopy hood 15, the suction inlet 22, and the surface of the rotating body 1 is separated by a distance from 10 to 25 mm inside and outside. ing. The outer peripheral portion of the rotating body 1 and the fabric 36 sandwiching the sheet material 35 are arranged inside the evaporation space 80. A part of the hood 17 is opened and closed during inspection and cleaning.In order to achieve perfect sealing inside the hood, at least one step is formed between the hoods 17 as an example for sealing the contact surface. An electric or pneumatically driven hood opening / closing device 18 is provided, which can be pressure-bonded via a heat-resistant packing such as a silicone sponge. The switchgear 18 may be two double doors or one single door.
回転体 1はその表面を平滑に仕上げた回転面でシート状物質 3 5と接触する。 フード 1 7の蒸発空間 8 0内の、 シート状物質 3 5と対向する位置に、 回転体 1 に外周方向からシー卜状物質 3 5を回転体 1 との間で挟んでいるフアブリック 3 6に向かい加熱ガスを吹き付けるガス吹出口 （加熱ガス供給部） 1 9が設けられ ている。 この吹出口 1 9は、 回転体 1の表面と約 1 0〜 2 5 m mの間隔を介して 回転体 1の軸と平行に、 且つ回転体 1の軸方向に複数設けられた好ましくはベル マウス型断面の丸孔あるいは角孔、 またはスリットによって構成されており、 回 転体 1の外周方向に所定間隔で複数配置されている。 吹出口 1 9は略回転体全幅 の長さに対してブロワの消費動力や乾燥速度の経済性から全開口率 1〜 3 %に設 定されている。 又孔形状では其の衝撃時にシー卜状物質 3 5に線状にマークがフ アブリック 3 6経由でも付着し易いので、 千鳥配置としてシ一卜走行時に噴射点 が重ならない事が望ましい。  The rotating body 1 comes into contact with the sheet material 35 on a rotating surface whose surface is finished smoothly. At a position facing the sheet material 35 in the evaporating space 80 of the hood 17, a fabric 36 sandwiching the sheet material 35 between the rotating body 1 and the rotating body 1 is formed on the rotating body 1. A gas outlet (heated gas supply unit) 19 for blowing heated gas is provided. Preferably, a plurality of the outlets 19 are provided with a plurality of bell mouths provided in parallel with the axis of the rotating body 1 and spaced apart from the surface of the rotating body 1 by about 10 to 25 mm in the axial direction of the rotating body 1. The rotating body 1 is constituted by a plurality of round holes, square holes, or slits, and is arranged at predetermined intervals in the outer circumferential direction of the rotating body 1. The total opening ratio of the blow-out port 19 is set to 1 to 3% in terms of the power consumption of the blower and the economics of the drying speed for the length of the substantially rotating body. In addition, in the case of the hole shape, the mark is easily attached to the sheet-like substance 35 linearly via the fabric 36 at the time of the impact.
吹出口 1 9は、 回転軸 2に対して放射状に配置された多数の細長い断面箱型部 材で、 回転体 1に対向する位置に回転軸 2に平行に設けられたものである。 そし て、 複数の箱形部材のそれぞれの間には、 蒸発空間 8 0 (フード 1 7 ) 内のガス を吸い込んでフード 1 7外部に排気するためのガス吸込口 （ガス排出口、 ガス排 出部） 2 2が設けられている。 ガス吸込口 2 2は、 回転体 1の外周方向に所定間 隔で配置されており、 好ましくはベルマウス型断面のスリット形状とする。 又は 吹出口 1 9を区画せず一体形状で半円弧状の弧状体とする時は、 丸孔パイプ形状 とする。 すなわち、 回転体 1に対してガスを吹き出す吹出口 1 9と、 ガスを吸い 込む吸込口 2 2とは、回転軸 2に対して平行で且放射状に交互に配置されている。 ここで、 吸込口 2 2は略シリンダ全幅の長さに対して全開口率 5 %内外に設定さ れている。 The outlet 19 is a multiplicity of box-shaped members having a long and narrow cross section arranged radially with respect to the rotating shaft 2, and is provided parallel to the rotating shaft 2 at a position facing the rotating body 1. Further, between each of the plurality of box-shaped members, a gas inlet (gas outlet, gas outlet) for sucking gas in the evaporation space 80 (hood 17) and exhausting the gas to the outside of the hood 17 is provided. 2) 2 are provided. The gas inlets 22 are arranged at predetermined intervals in the outer circumferential direction of the rotating body 1 and preferably have a slit shape with a bell mouth-shaped cross section. Or, when the outlet 19 is to be made into a semi-circular arc with no integral section, a round hole pipe shall be used. That is, an outlet 19 for blowing out gas to the rotating body 1 and a gas The inlets 22 are arranged in parallel and radially alternately with the rotating shaft 2. Here, the suction port 22 is set to have a total opening ratio of about 5% with respect to the length of substantially the entire width of the cylinder.
吹出口 1 9には、複数の環状箱型で給気函連結ダク ト 2 1 と接続した給気函 (加 熱ガス供給部） 2 0が接続されている。 給気函 2 0は、 図 2に示すように、 吸込 スペースを充分確保する為に間隔を置いてシリンダ軸 2に対して直角に環状に配 冽設置されている。 そして、 キヤノピーフード 1 5は給気函 2 0の補強構造とし て接続されている。 猶紙幅が狭い小型抄紙機では吹出口 1 9を省略し、 キヤノビ 一フード 1 5による一体構造とし、 回転体 1に面する内周面に多数の丸孔又はス リット開口を設けても良い。 其の場合ガス吸込口 2 2は、 例えばパイプをキヤノ ピーフード 1 5の内外周面に貫通して設けても良い。  An air supply box (heated gas supply unit) 20 connected to the air supply box connection duct 21 in the form of a plurality of annular boxes is connected to the outlet 19. As shown in FIG. 2, the air supply box 20 is arranged in a ring shape at right angles to the cylinder shaft 2 at intervals so as to secure a sufficient suction space. The canopy hood 15 is connected as a reinforcing structure for the air supply box 20. In a small-sized paper machine having a narrow width, the outlet 19 may be omitted, an integral structure may be provided by a canopy hood 15 and a number of round holes or slit openings may be provided on the inner peripheral surface facing the rotating body 1. In that case, the gas inlet 22 may be provided, for example, by penetrating a pipe through the inner and outer peripheral surfaces of the canopy hood 15.
給気函連結ダク ト 2 1には、 フレキシブルジョイント （フレキダク ト） を介し てフード 1 7を貫通した給気ダク 卜 2 7が接続されている。 ここで、 給気ダク 卜 2 7を配置するフード 1 7の貫通部 （フードの壁部） とダク 卜とはシールされて いる。 また、 キヤノピーフード 1 5に対して回転体 1を挟んで対向する位置のう ち 2本のサクシヨンフアブリックロール 8どうしの間隙にはポケット給気函 （ポ ケット部） 6 7 (図 1及び 図 3参照) が設置されており、 給気ダク ト 2 7にフ レキシブルジョイントを介して接続される。 また、 吸込口 2 2と接続している吸 込函 (ガス排出部) 2 3には、 フード 1 7を貫通した吸込ダク 卜 (排気ダク ト） 2 4が接続されている。 吸込ダクト 2 4とフード 1 7の壁部ともシールされてい 本発明では全部の回転体 1やロール類は密閉フード内に配置するが、 既設乾燥 部を利用する時に、 以下のシール方法を一部に採用する事も出来る。  An air supply duct 27 penetrating through the hood 17 is connected to the air supply box connection duct 21 via a flexible joint (flexible duct). Here, the duct (the wall of the hood) of the hood 17 where the air supply duct 27 is arranged and the duct are sealed. In addition, a pocket air supply box (pocket portion) 6 7 (see FIG. 1) is provided between the two suction roll bricks 8 at positions facing the canopy hood 15 with the rotating body 1 interposed therebetween. And see Fig. 3), which are connected to the air supply duct 27 via a flexible joint. Further, a suction duct (exhaust duct) 24 penetrating through the hood 17 is connected to a suction box (gas discharge part) 23 connected to the suction port 22. The suction duct 24 and the wall of the hood 17 are also sealed.In the present invention, all the rotating bodies 1 and rolls are arranged in a closed hood, but when the existing drying unit is used, the following sealing method is partially used. Can also be adopted.
即ちフード 1 7の内壁に対して、 回転体 1ゃサクシヨンファブリックロール 8 等を含むフード 1 7内部に配置された各種回転体 （シリンダ） がフード 1 7を貫 通して接する場合は、 フード 1 7内部と外部とのガスの移動を規制するカーボン フアイバー等耐熱性のブラッシシールが取リ外し容易に内接する。 このブラッシ シールは、 フード 1 7の内圧に相当する凝結ドレンの水中高さ相当長さのブラッ シシール構造とするのが好ましいが、 長さが取れない時は差圧で徐々に外部に漏 れ出す。 ブラッシシール構造では、 フード 1 7内の水蒸気が漏洩した際、 凝結し てドレンとなリブラッシ内を充満することによって、 外部の空気がフード 1 7内 に侵入したり、 内部の蒸発水蒸気が多量に流出しないようになっている。 That is, when various rotating bodies (cylinders) disposed inside the hood 17 including the rotating body 1 and the suction fabric roll 8 and the like come into contact with the inner wall of the hood 17 through the hood 17, 7 A heat-resistant brush seal such as carbon fiber that restricts gas movement between inside and outside can be removed and inscribed easily. This brush seal preferably has a brush seal structure with a length equivalent to the height of the condensed water in the water, which corresponds to the internal pressure of the hood 17. Get out. In the brush seal structure, when the water vapor in the hood 17 leaks, the inside of the rib brush, which condenses and drains, fills the inside, so that external air enters the hood 17 and a large amount of internal water vapor evaporates. It does not leak.
図 1などに示すように、 フード 1 7の一部 （図 1中右側） には、 フード 1 7の 外部から内部に対して湿潤状態のシート状物質 3 5を導入するための入口部 6 0 が設けられている。 一方、 フード 1 7の入口部 6 0と反対側には、 フード 1 7の 内部から外部にシー卜状物質 3 5を導出するための出口部 6 1が設けられている フード 1 7は、 入口部 6 0及び出口部 6 1を除いて全て全面接合密閉箱体構造に より全密閉となっている。  As shown in FIG. 1 and the like, a part of the hood 17 (on the right side in FIG. 1) has an inlet section 60 for introducing the wet sheet material 35 from the outside to the inside of the hood 17. Is provided. On the other hand, on the side opposite to the inlet section 60 of the hood 17, an outlet section 61 for drawing out the sheet-like substance 35 from the inside of the hood 17 to the outside is provided. Except for the part 60 and the outlet part 61, all parts are completely sealed by a fully joined closed box structure.
図 4， 図 5に示すように、 入口部 6 0及ぴ出口部 6 1のそれぞれのフード 1 7 外側には、 シート状物質 3 5よリ少々広めの 2本以上好ましくは 4本以上のシー リングピンチロール （上下ロール） 3 8が、 シート状物質を表裏面から挟むよう に設けられている。 フード 1 7の外側に設けられているシーリングピンチロール 3 8は 4 . 9 0 3 k N Zm幅以上の線圧を載荷可能である。 また、 入口部 6 0の シ一リングピンチロール 3 8及び出口部 6 1のシーリングピンチ口一ル 3 8のそ れぞれのフード 1 フ側には、 2対のほぼ対称形の円弧状の断面を有するピンチ口 ールシール装置 (シール部、 シール機構） 4 4がそれぞれ設けられている。 ピンチロールシール装置 4 4の一端は、 フード 1 7の外壁面に接続したシーリ ングフレーム 4 5に固定されている。 一方、 ピンチロールシール装置 4 4の他端 は、 ブラッシシール (耐熱シール材) 4 6を介してシ一リングピンチロール (上 下ロール） 3 8と接触している。 ブラッシシール 4 6は、 1 m m径以下の耐熱性 繊維製のブラッシを植え付けた耐熱性べ一ス、 又は耐熱性ブランケッ卜によって 構成されており、 摩損時に容易に交換可能となっている。 なお、 ブラッシ等の材 質としては、 耐熱ナイロン、 亍トロン、 力一ボン等がある。  As shown in FIGS. 4 and 5, outside the hood 17 of each of the inlet portion 60 and the outlet portion 61, two or more, preferably four or more, slightly wider than the sheet material 35 are provided. Ring pinch rolls (upper and lower rolls) 38 are provided so as to sandwich the sheet material from the front and back surfaces. The sealing pinch roll 38 provided outside the hood 17 can load a linear pressure of 4.903 kN Zm or more. In addition, two pairs of substantially symmetrical arcs are provided on the hood 1 side of each of the sealing pinch rolls 38 at the inlet section 60 and the sealing pinch rollers 38 at the outlet section 61. A pinch-hole sealing device (sealing part, sealing mechanism) 44 having a cross section is provided. One end of the pinch roll sealing device 44 is fixed to a sealing frame 45 connected to the outer wall surface of the hood 17. On the other hand, the other end of the pinch roll sealing device 44 is in contact with a sealing pinch roll (upper / lower roll) 38 via a brush seal (heat-resistant sealing material) 46. The brush seal 46 is made of a heat-resistant base or a heat-resistant blanket in which a heat-resistant fiber brush having a diameter of 1 mm or less is planted, and can be easily replaced when it is worn. Materials such as brushes include heat-resistant nylon, petroleum, and nylon.
図 4に示すように、 フード 1 7の入口部 6 0にはスチームボックス 4 3が設け られており、 スチームボックス 4 3と対向する位置にはサクシヨンボックス 4 0 を有する耐熱性の給紙用シーリングブランケット （入口用帯状帯） 3 9が設けら れている。 給紙用シーリングブランケッ卜 3 9は環状に形成されたェンドレス構 造となっており、 複数のロール 3 9 a〜3 9 cによって支持され不図示のテンシ ヨン装置とガイ ド装置と駆動装置により適切なテンションで周回可能となってい る。 このうち、 テンションロール 3 9 a , ガイドロール 3 9 bはフード 1 7外部 に設けられ、 ロール 3 9 cはフード 1 7内部に設けられている。 そして、 シ一リ ングブランケット 3 9は、 シーリングフレーム 4 5及びフード 1 7の一部に設け られている開口部、 シート通過用フード出入リロ中央スリット （シート通過用ス リッ卜) 9 5及びフアブリック及びブランケッ卜通過用フード出入口上スリット (帯状帯通過用スリット） 9 6を介して、 フード 1 7の内部と外部とでまたがる ように周回される。 As shown in FIG. 4, a steam box 43 is provided at the entrance 60 of the hood 17, and a heat-resistant paper feeder having a suction box 40 at a position facing the steam box 43. A sealing blanket (strip for entrance) 39 is provided. The sheet-feeding sealing blanket 39 has an endless structure formed in an annular shape, and is supported by a plurality of rolls 39a to 39c, and a tension (not shown). It is possible to orbit with the appropriate tension by means of the Yon device, guide device and drive device. Among them, the tension roll 39 a and the guide roll 39 b are provided outside the hood 17, and the roll 39 c is provided inside the hood 17. The sealing blanket 39 includes openings provided in the sealing frame 45 and a part of the hood 17, a central slit (a sheet passing slit) 95, and a fabric slit in and out of the sheet passing hood. The hood 17 is circulated so as to extend between the inside and the outside of the hood 17 via a slit on the entrance of the hood for passing the blanket (slit for passing the belt-like band) 96.
—方、 図 5に示すように、 フード 1 7の出口部 6 1にもスチームボックス 4 3 が設けられており、 スチームボックス 4 3と対向する位置にはサクシヨンボック ス 4 0を有する排紙用シーリングブランケット （出口用帯状帯） 4 1が設けられ ている。 排紙用シーリングブランケッ卜 4 1も環状に形成されたエンドレス構造 となっており、 複数のロール 4 1 a〜4 1 cによって支持され不図示のテンショ ン装置やガイ ド装置と駆動装置により適切なテンションで周回可能となっている このうち、 テンションロール 4 1 a , ガイドロール 4 1 bはフード 1 フ外部に設 けられロール 4 1 cはフード 1 フ内部に設けられている。 そして、 シーリングブ ランケット 4 1は、 シーリングフレーム 4 5及ぴフード 1 7の一部に設けられて いる開口部、 シ一ト通過用フ一ド出入り口中央スリツト 9 5及びフアブリック又 はファブリック及びブランケッ卜通過用フード出入口下スリツ卜 （帯状帯通過用 スリット） 9 7を介して、 フード 1 7の内部と外部とでまたがるように周回され 図 4に示すように、 フード 1 7の入口部 6 0には給紙用シーリングブランケッ 卜 3 9と対向するように、 該給紙用シーリングブランケット （入口用帯状帯） 3 9との間でシ一ト状物質 3 5を挟むように設けられた耐熱性の入口用フアブリッ ク （入口用帯状帯） 1 2が設けられている。 入口用ファブリック 1 2は環状に形 成されたェンドレス構造となっており、 複数のロール 1 2 a〜 1 2 eによって支 持され不図示の駆動装置のもとで適切なテンションで周回可能となっている。 こ のうち、 ロール 1 2 dはフード 1 7内部に設けられ、 それ以外はフード 1 7外部 に設けられている。 そして、 入口用フアブリック 1 2は、 シーリングフレーム 4 5及びフード 1 7の一部に設けられている開口部、 シート通過用フード出入リロ 中央スリツ卜 9 5及びフアブリック又はフアブリック及びブランケッ卜通過用フ —ド出入口下スリツト 9 7を介して、 フード 1 7の内部と外部とでまたがるよう に周回される。 On the other hand, as shown in FIG. 5, a steam box 43 is also provided at the outlet 61 of the hood 17, and a discharge box having a suction box 40 is provided at a position facing the steam box 43. Sealing blanket (band-shaped strip for exit) 4 1 is provided. The discharge sealing bracket 41 also has an endless structure formed in an annular shape, and is supported by a plurality of rolls 41a to 41c, and is appropriately controlled by a tension device, a guide device, and a drive device (not shown). The tension rolls 41a and guide rolls 41b are installed outside the hood and the rolls 41c are installed inside the hood. The sealing blanket 41 includes openings provided in the sealing frame 45 and a part of the hood 17, a central slit 95 for a sheet passage hood, and a fabric or fabric or blanket. It is wrapped around the inside and outside of the hood 17 through the slit under the hood entrance and exit (strip for passing the belt-like band) 97 as shown in FIG. Is a heat-resistant sheet provided so as to sandwich the sheet-like substance 35 between the sheet-supplying sealing blanket 39 and the sheet-supplying sealing blanket (band-in strip for entry) 39. An entrance fabric (a belt for entrance) 12 is provided. The fabric for entrance 12 has an endless structure formed in an annular shape, and is supported by a plurality of rolls 12a to 12e, and can orbit with an appropriate tension under a driving device (not shown). ing. Of these, the roll 12 d is provided inside the hood 17, and the others are provided outside the hood 17. And the entrance fabric 1 2 is the sealing frame 4 5 and an opening provided in a part of the hood 17, a hood opening / closing relo for the sheet passing, a central slit 95, and a fabric or a brick and a blank for passing a blanket and a blank 97, a slit under the doorway 97, the hood 1. The circuit goes around inside and outside of 7.
—方、 図 5に示すように、 フード 1 7の出口部 6 1には排紙用シーリングブラ ンケッ卜 4 1 と対向するように、 該排紙用シーリングブランケット (出口用帯状 帯） 4 1との間でシート状物質 3 5を挟むように設けられた出口用フアブリック (出口用帯状帯） 1 2が設けられている。 出口用ファブリック 1 2は環状に形成 されたェンドレス構造となっており、 複数のテンションロール 1 2 aガイ ド口一 ル 1 2 b、 其の他 1 2 cと 1 2 dと 1 2 eによって支持され不図示のテンション 装置やガイ ド装置と駆動装置のもとで適切なテンションで周回可能となっている。 このうち、 ロール 1 2 dはフード 1 7内部に設けられ、 それ以外はフード 1 7外 部に設けられている。 そして、 出口用ファブリック 1 2は、 シ一リングフレーム 4 5及ぴフード 1 7の一部に設けられている開口部、 シート通過用フード出入り 口中央スリット 9 5及びフアブリック及びブランケッ卜通過用フード出入口上ス リット 9 6を介して、 フード 1 7の内部と外部とでまたがるように周回される。 そして、 フード 1 7の内部と外部とでまたがるように設置されているシ一リン グブランケット 3 9 , 4 1 と、 フード 1 7の内部と外部とでまたがるように設置 されている出入口用フアブリック 1 2とが、 シート状物質 3 5を挟みつつ周回す ることにより、 フード 1 7に対する給排紙が容易に行えるようになつているとと もに、 これらシ一リングブランケット 3 9 , 4 1、 ファブリック 1 2、 ピンチ口 ールシール装置 4 4、 ブラッシシール 4 6、 シーリングピンチロール 3 8などに よって、 入口部 6 0及び出口部 6 1におけるフード 1 7外部と内部とのガスの移 動を規制するシール部 （シール機構、 空気遮断装置） が構成されている。 猶シー ール装置の幅方向でファブリック又はブランケッ卜の両端部は、 シーリングフレ ー厶 4 5に設けられた耐熱性のブラッシシール又はブランケッ卜が延長してシ一 ルし、 加熱ガスのリークや外部空気の漏洩を完全防止する。  As shown in FIG. 5, the outlet 61 of the hood 17 is connected to the discharge sealing blanket 4 1 so as to face the discharge sealing blanket 4 1. An outlet fabric (outlet strip-shaped band) 12 provided so as to sandwich the sheet-like substance 35 therebetween. The outlet fabric 12 has an endless structure formed in an annular shape, and is supported by a plurality of tension rolls 12a guide holes 12b, and other 12c, 12d and 12e. Then, it is possible to orbit with an appropriate tension under a tension device, guide device and drive device (not shown). Among them, the roll 12 d is provided inside the hood 17, and the other rolls are provided outside the hood 17. The outlet fabric 12 includes openings provided in a part of the sealing frame 45 and the hood 17, a central slit 95 for the hood for sheet passage, and a hood entrance for the fabric and blanket passage. Via the upper slit 96, it is circulated so as to straddle the inside and the outside of the hood 17. And, the sealing blankets 39, 41 installed between the inside and the outside of the hood 17, and the entrance / exit fabric 1 installed across the inside and the outside of the hood 17 2 makes it possible to easily supply and discharge paper to and from the hood 17 by orbiting the sheet-like material 35 while sandwiching the same. The movement of gas between the outside and the inside of the hood 17 at the entrance 60 and the exit 61 is regulated by the fabric 12, pinch opening seal device 44, brush seal 46, sealing pinch roll 38, etc. The seal part (seal mechanism, air shutoff device) is configured. At both ends of the fabric or blanket in the width direction of the sealing device, the heat-resistant brush seal or blanket provided on the sealing frame 45 is extended and sealed, causing leakage of heated gas or leakage. Completely prevent external air leakage.
紙通しに際しシ一ト通過用フ一ド入口中央スリット 9 5を更に広く開口したい 時は、 下側又は上下設置のシール装置全体を昇降式とし、 紙通し時は昇降させて スリット幅を広げ、 完了後に元に戻し正規スリット幅としても良いが、 余り距離 を開け過ぎると後述する通紙時にシートを挟み込む力が不足しずるずる抜けるし、 空気の漏れこみ防止上からも、 上下のシーリングピンチロールはスプリングゃ空 圧等でシ一トを挟み込み可能とする。 勿論其の場合はフアブリック又はフアブリ ック及びブランケッ卜通過用フード出入口下スリツト 9 7の位置を広げて昇降ス ペースを充分取る要がある。 通紙時は操作側でシー卜状物質の耳を水圧ノズルで カツ卜して、 二本以上の耐熱キヤリヤーロープで挟みフード 1 7の入口部まで運 び、 キヤリヤーロープ方式では上下の耐熱ロープを夫々切替えてシー卜を渡す。 受渡し方法は入口部手前では送り側キヤリヤーシーブと受け側キヤリヤーシーブ によりロープを夫々交差させ、 先ず送リ側の上下でシー卜状物質を挟み込んだ耐 熱ロープの何れかを進行方向でずらし、 シート状物質を短距離間一時フリーにし て、 次いで受け側耐熱ロープの片側で挾み送り側が全部外れた位置でシート状物 質の両側を挟み込む。本発明では出入口用のシート全幅の専用フアブリック（出入 口用帯状帯） 1 2と給排紙用シ一リングブランケット（出入口用帯状帯） 3 9と 4 1 が有るので、 ロープレス方式で直接シートを上下の帯状帯で挟み通紙する。 フ一 ド前迄ロープ通紙の時は、 高圧空気ノズルで帯状帯間に吹寄せる。 3粍厚さ以上 の超厚紙の場合でファブリック (帯状帯) 3 6を使用し無い時は、 フード 1 7の シール対策として出入口用帯状帯を使用し通紙はキヤリヤーロープ方式に依る。 なお、 これらファブリック (帯状帯) はサクシヨン可能な空隙 (網目又はスリ ット又は丸孔等） を有するものを用いる。 出入口用フアブリック 1 2と給紙用シ —リングブランケット 3 9は、 フード 1 7の過熱水蒸気雰囲気中に出入りすると ともに外部より空気を持ち込むので、 シート離れを良好にするために、 スチーム 噴射時に微圧がかかる程度の微小な空隙を除き、 中実とするのが好ましい。 猶図 4と 5に示す実施例では上下に夫々二組の耐熱性の給紙用シ一リングブランケッ 卜 3 9と出入リロ用ファブリック 1 2とを利用して、 シ一卜状物質の食い込み防 止策としておリ、 フード 1 7の出入リロの夫々外気側上下に、 シーリングブラン ケット 3 9と出入リロ用ファブリック 1 2の帰り用のブラッシ機構によるシール 構造として、 中央にシート通過用の空隙を有するシーリングフレーム 4 5をフー ド 1 フの外面に装着する。なお、給排紙専用のシーリングブランケッ卜を排除し、 乾燥用のェンドレスフアブリック 3 6をそれぞれフ一ド 1 7の外部にまたがるよ うに周回させ、 出入口用シール部を簡略化しても良い。 If it is desired to open the central slit 95 of the sheet feed hood more widely when passing through the paper, the lower or upper / lower installation of the entire sealing device should be of an up-and-down type. The slit width may be increased and returned to the original slit width after completion, but if the distance is too large, the sheet will not slip tightly during paper passing, as described below, and will slip out and will prevent air leakage. The sealing pinch roll can be sandwiched by a spring and air pressure. Of course, in that case, it is necessary to widen the position of the slit 97 below the fabric entrance / exit for the fabric or fabric and the passage for the blanket to secure sufficient vertical space. At the time of paper passing, cut the ear of the sheet-like material on the operation side with a hydraulic nozzle, sandwich it with two or more heat-resistant carrier ropes, and transport it to the inlet of the hood 17, and use the carrier rope method to heat up and down Switch the ropes and pass the sheet. The delivery method is that the rope is crossed by the sending carrier sheave and the receiving carrier sheave before the entrance, and first, one of the heat-resistant ropes sandwiching the sheet material above and below the sending side is shifted in the traveling direction, and the sheet material Is temporarily free for a short distance, and then sandwiched by one side of the heat-resistant rope on the receiving side, and both sides of the sheet-like material are sandwiched at the position where the feeding side is completely removed. In the present invention, since there is a dedicated fabric (a belt for entrance and exit) 12 of the entire width of the sheet for entrance and a sealing blanket for supply and discharge (a belt for entrance and exit) 39 and 41, the sheet is directly pressed by a low press method. Is sandwiched between upper and lower belt-shaped belts and passed. When the paper is passed through the rope before the feed, blow it between the belts with a high-pressure air nozzle. When fabric (band-shaped band) 36 is not used in the case of super-thick paper with a thickness of 3 mm or more, use a belt-shaped band for entrance and exit as a measure to seal the hood 17 and pass paper through a carrier rope system. In addition, these fabrics (band-like bands) having a void (mesh, slit, round hole, or the like) that can be used for suction are used. The entrance and exit fabrics 1 and 2 and the feeding blanket 39 enter and exit the superheated steam atmosphere of the hood 17 and bring in air from the outside. However, it is preferable to be solid except for small voids of such a degree. In the embodiments shown in FIGS. 4 and 5, two sets of heat-resistant sheeting blanket 39 and two pieces of fabric for entry / exit reloWer 12 are used at the top and bottom, respectively, to prevent entry of sheet-like substances. As a countermeasure, a sealing structure with a sealing blanket 39 and a brush mechanism for returning the fabric 12 for the entrance / exit relo above and below the entrance / exit relo of the hood 17 respectively on the outside air side. Attach the sealing frame 45 to the outer surface of the hood 1. In addition, the sealing blanket dedicated to paper feeding and discharging is eliminated, Endless fabrics 36 for drying may be wrapped around the outside of the hood 17 to simplify the entrance / exit seal portion.
ここで、 図 4、 図 5を用いてシート状物質 3 5がフード 1 7内部に入る動作を 説明する。 まず、 湿潤したシート状物質 3 5がペーパーロール等を介して空気の 進入を防止しながら出入リロ用ファブリック 1 2上に着地する。 次いで、 シート 状物質 3 5はシーリングピンチロール 3 8によって外気よリ完全に遮断された密 閉フード 1 7の外壁である断熱パネルの貫通部シート通過用フード出入リロ中央 スリット 9 5を通ってフード 1 7内部に入る。 フード 1 7内部に入る際、 シート 状物質 3 5は、 スチームボックス 4 3よりの噴射蒸気によリシ一ト中の残留空気 を除去されつつ、 サクシヨンボックス 4 0によリ給紙用シ一リングブランケット 3 9側に吸着するが、 低温なシート状物質 3 5との接触によリ噴射蒸気が急激に 凝縮して潜熱を奪われシー卜温度が急上昇し、 通気度の高い耐熱性材料で構成さ れたェンドレスフアブリック 3 6を介して、 サクションフアブリックロール 8に より吸引され、 回転体 1 と接触しながらその周囲を周回して乾燥される。  Here, the operation of the sheet material 35 entering the hood 17 will be described with reference to FIGS. First, the wet sheet-like substance 35 lands on the in / out relo fabric 12 while preventing air from entering through a paper roll or the like. Next, the sheet-like substance 35 passes through the through-hole of the heat-insulating panel, which is the outer wall of the closed hood 17, which is completely blocked from the outside air by the sealing pinch roll 38. 17 Enter inside. When entering the inside of the hood 17, the sheet-like substance 35 is removed from the sheet by the suction box 40 while the residual air in the sheet is removed by the steam injected from the steam box 43. It is adsorbed on the ring blanket 39 side, but when it comes into contact with the low-temperature sheet-like substance 35, the re-injected steam rapidly condenses and loses latent heat, causing the sheet temperature to rise sharply. It is sucked by the suction fabric roll 8 via the endless fabric 36 constituted and is rotated around the periphery while being in contact with the rotating body 1 and dried.
図 3に示すように、 乾燥装置 D S 1は、 フード 1 7外部に設けられ、 ガス排出 部 2 2 , 2 3によってフード 1 7内部より排気されたガスを処理して該フ一ド 1 7内部に再度供給するガス循環加熱系 （ガス循環装置） Jを備えている。 ガス循 環加熱系 （ガス循環装置、 ガス循環加熱装置） Jは、 図 3、 2 2、 2 3に示すよ うに、 回転体 1の好ましくは駆動側に設けられ、 排気中のミストや紙粉等の異物 を除去する排気スクリーン (フィルタ) 3 3、 燃焼ガスまたは熱媒体例えば水素 ガス燃料と酸素とを使用する水素ガスタービンからの高温排ガス等を熱源とする 排気ヒータ （循環ガス熱交換器） 3 4、耐熱ブロワ一であるガス循環ブロワ一（循 環ファン） 2 5、 断熱膨脹ノズル 2 6、 給気ダク ト 2 7、 ガススクラバ一 （蒸気 スクラバ一） 2 8、 ガスコンプレッサ （スチームコンプレッサ） 2 9、 加圧蒸気 管 3 0、蒸気加減弁 3、メークアップ蒸気管 3 2、給気制御ダンパー又は弁 3 7、 排気制御ダンパ一又は弁 4 2とを備えており、 それぞれ前述した吸込ダク ト 2 4 及び給気函連結ダク ト 2 1 と蒸気ヘッダー 1 0 0とに接続して過熱水蒸気を主体 とする加熱ガスを循環させる。 猶排気スクリーンでの圧損が大なので、 フードの 排気方向 （天井部又は床部又は側壁部） の全面を利用して、 取外し可能な大面積 のフィルタを設置しても良い。 As shown in FIG. 3, the drying device DS 1 is provided outside the hood 17, and processes gas exhausted from the inside of the hood 17 by the gas discharge units 22, 23, and converts the gas into the inside of the hood 17. A gas circulation heating system (gas circulation device) J that supplies the gas again. The gas circulation heating system (gas circulation device, gas circulation heating device) J is provided on the rotating body 1 preferably on the driving side as shown in FIGS. Exhaust screen (filter) that removes foreign matter such as fuel 33, Exhaust heater (circulating gas heat exchanger) that uses high-temperature exhaust gas from a hydrogen gas turbine that uses combustion gas or a heat medium such as hydrogen gas fuel and oxygen as a heat source 3 4, gas circulation blower (circulation fan), which is a heat-resistant blower 25, adiabatic expansion nozzle 26, air supply duct 27, gas scrubber (steam scrubber) 28, gas compressor (steam compressor) 2 9.Pressurized steam pipe 30, steam control valve 3, makeup steam pipe 32, air supply control damper or valve 37, exhaust control damper or valve 42 2 4 and air supply box connection Connect to duct 21 and steam header 100 to circulate heated gas mainly composed of superheated steam. Since the pressure loss at the exhaust screen is large, a large area that can be removed using the entire surface of the hood in the exhaust direction (ceiling, floor, or side wall) May be installed.
次に、 本発明の特徴的な部分である回転体 1について図 6 , 図 7を参照しなが ら説明する。 図 6は回転体 1の縦断面図、 図 7は図 6の Z— Z矢視図である。 回 転体 （回転シリンダ） 1は、 回転体軸受 3を有する回転体軸 2と、 この回転体軸 2の外周に略等間隔で取り付けられた回転体セグメント 7と、 回転体セグメント 7の外側に接続され、 回転体 1の幅方向に分割可能な回転体シェル 1 ' と、 この 回転体シ: ϋル 1 ' の内周面に対して略等間隔で接続される回転体補強リブ 6とを 有している。また、回転体軸 2のまわりには補強ソケット 2 aが設けられている。 回転体 1は、 例えば、 S S製、 S U S製等の金属、 耐熱合成樹脂等、 従来の内部 を中低圧蒸気加熱する為に第二種圧力容器とした頑丈な錶鋼製のシリンダに比べ て大変軽い材質によって構成されている。 なお、 回転体 1を耐熱プラスチック製 や硝子繊維やァラミド繊維やカーボン繊維製の籠型構造に同フィルムやテフロン (登録商標） 製フィルム等によって表面を平滑に構成することにより、 フード入 口部 6 0のスチームシャワーによる凝縮伝熱による急激な昇温作用と共に低温湿 潤状態によるシ一卜状物質 3 5の接着が無くなり、 接着に起因する断紙の発生の 恐れを皆無に出来たので、 今後抄紙機の更なる高速化が可能になった。 また、 回 転体 1が分割構造であるため、 広幅抄紙機の建設に際し輸送上の制約に容易に対 応できる。  Next, the rotating body 1 which is a characteristic part of the present invention will be described with reference to FIGS. FIG. 6 is a longitudinal sectional view of the rotating body 1, and FIG. 7 is a view taken along the line ZZ of FIG. The rotating body (rotating cylinder) 1 includes a rotating body shaft 2 having a rotating body bearing 3, a rotating body segment 7 attached to the outer periphery of the rotating body shaft 2 at substantially equal intervals, and a rotating body segment 7. A rotating body shell 1 ′ that is connected and can be divided in the width direction of the rotating body 1, and a rotating body reinforcing rib 6 that is connected to the inner peripheral surface of the rotating body shell 1 ′ at substantially equal intervals. Have. Further, a reinforcing socket 2a is provided around the rotating body shaft 2. The rotating body 1 is, for example, a metal made of SS or SUS, a heat-resistant synthetic resin, or the like. It is made of light material. The rotator 1 is made of a heat-resistant plastic, glass fiber, aramide fiber, or carbon fiber in a cage structure, and the surface of the rotator 1 is made smooth by using the same film or a Teflon (registered trademark) film. In addition to the rapid rise in temperature due to the condensation heat transfer by the steam shower of No. 0, the adhesion of the sheet-like substance 35 due to the low-temperature moist condition was eliminated, and there was no danger of paper breakage due to the adhesion. It has become possible to further speed up the paper machine. In addition, since the rotating body 1 has a divided structure, it is possible to easily cope with transportation restrictions when constructing a wide paper machine.
回転体 1を組み立てる際には、 まず、 回転体補強リブ 6と回転体セグメン卜 7 とを互いに接合して広幅の一体構造としてリーマボルト等により固定し、 予め製 作工場で動バランス等必要な加工を実施する。 その後、 分解して建設地まで輸送 し、建設地に到達して組立工程を完了したら、回転体シェル 1 ' を表面に接合し、 平滑仕上げする。 なお、 輸送上の問題が無ければ分解組立構造でなく製作工場で 完成品としても良い。 また、 回転钵 1の両軸測面に鏡板を取り付けても良い。 このように、 従来のような中低圧蒸気加熱によリ内部加熱をして乾燥シリンダ を高温加熱し、 その熱伝導を主体としてシ一ト状物質を乾燥する第二種圧力容器 と異なり、 5 0 °C以上の循環再加熱ガスによる熱伝達と熱放射性ガス特性を主 体とする外周加熱によリシ一卜状物質を乾燥するので、 回転体 1は従来のような 錶鋼などによって頑丈に構成しなくても、 上述したような軽構造に構成すること ができる。 When assembling the rotating body 1, first, the rotating body reinforcing ribs 6 and the rotating body segment 7 are joined together and fixed with a reamer bolt or the like as a wide integrated structure. Is carried out. After that, it is disassembled and transported to the construction site. When it reaches the construction site and the assembly process is completed, the rotating body shell 1 'is joined to the surface and smooth finished. If there is no transportation problem, the product may be completed at the manufacturing factory instead of the disassembly / assembly structure. Further, a head plate may be attached to the two-axis measurement surface of the rotation # 1. In this way, unlike the conventional type 2 pressure vessel, which heats the drying cylinder at high temperature by heating the inside of the drying cylinder by medium- and low-pressure steam heating and drying the sheet-like material mainly by the heat conduction, it is 5 Rotary body 1 is dried firmly using conventional steel, etc. Even if it is not configured, it must be configured as described above Can be.
猶、 既設又は中古の第二種圧力容器である内部加熱式乾燥シリンダを利用する 時は、 圧力容器内に供給される蒸気が外部加熱ガスによリ逆に昇温され圧力が上 昇し非常に危険である。 又ドレン回収系に高温過熱水蒸気が流れスチームハンマ —によるトラブルや、 多量のエネルギーが消耗されるので、 蒸気供給を止める事 が必要になる。 ロータリージョイントゃサイフォン等の損耗を考えると取り外す 必要がある。 但し乾燥シリンダ側面が外部に露出し、 キヤノピーフードのみで囲 う場合は、 外周加熱が局部的で不充分なので論外である。  When using an internal heating type drying cylinder, which is an existing or used second-class pressure vessel, the steam supplied to the pressure vessel is heated up by the external heating gas, causing the pressure to rise and the pressure to rise. Dangerous. Also, high-temperature superheated steam flows into the drain recovery system, and troubles due to steam hammer and a large amount of energy are consumed, so it is necessary to stop steam supply. Rotary joint ゃ It is necessary to remove it in consideration of wear of siphons. However, if the side of the drying cylinder is exposed to the outside and enclosed only by the canopy hood, it is out of the question because the outer periphery is locally and insufficiently heated.
次に、 上述した構成を有する乾燥装置 D S 1を用いて湿潤状態のシート状物質 3 5を乾燥する方法について説明する。 ワイヤーパートで抄造されプレスパート で水分 6 0〜 5 0 %に脱水された湿潤状態のシー卜状物質 3 5は、 断熱性のパネ ルにより完全密閉されたフード 1 7の入口部 6 0において、 入口用ファブリック 1 2によリリードされ、 上下のシ一リングピンチ口ール 3 8により給紙用シ一リ ングブラケッ卜 3 9との間に挟まれて進行し、 スチームボックス 4 3とサクショ ンボックス 4 0間で急激に凝縮伝熱によリ加熱され急激に昇温して、 サクシヨン ボックス 4 0により給紙用シーリングブランケット 3 9側に取られて、 フード 1 7内部に導入される。 猶シート状物質 3 5の通紙方法は、 テールシユーターとブ ロワ一によるキヤリャ一ロープ方式か、 エア一ドクターと亍一ルカッターによる 口一プレス方式に依る。  Next, a method of drying the wet sheet material 35 using the drying device DS1 having the above-described configuration will be described. The wet sheet-like substance 35, which was made in the wire part and dehydrated in the press part to a water content of 60 to 50%, was placed at the entrance 60 of the hood 17, which was completely sealed by a heat-insulating panel. The fabric is re-read by the entrance fabric 1 2, and is sandwiched between the paper-feeding sealing brackets 39 by the upper and lower sealing pinch ports 38, and travels to the steam box 43 and the suction box. Between 40, it is rapidly heated by the condensation heat transfer, and the temperature rises sharply. Then, it is taken by the suction box 40 to the side of the paper feeding blanket 39, and is introduced into the hood 17 inside. The paper passing method of the grace sheet material 35 depends on the carrier rope method using a tail shutter and a blower, or the mouth press method using an air doctor and a pen cutter.
ここで、 フード 1 7の内部は、 前記ガス循環加熱系 Jによって、 1 0 0 °C以上 のガス雰囲気に設定されている。 さらに、 ガス循環加熱系 Jによって、 フード 1 7の内部に対するガスの給排気量のバランスが制御され、 フード 1 7内部の圧力 は、 フード 1 7外部の圧力より数粍から数 1 0粍水中内外高く設定されている。 フード 1 7内部に導入されたシート状物質 3 5は、 フード 1 7内部において周 回している下段側フアブリック 3 6 Bにサクシヨンフアブリックロール 8のサク シヨン機構によリ吸引され取られて、 入口部 6 0側下段に設置されている回転体 1の入口に導かれる。 そして、 シート状物質 3 5の上面が回転体 1に密着して、 シート状物質 3 5の下面が下段側ファブリック 3 6 Bとの間に挟まれて回転体 1 の回転に伴って周回■走行する。 このとき、 シー卜状物質 3 5はフアブリック 3 6によりファブリックテンションロール 1 1を介して回転体 1に対してシート状 物質 3 5の乾燥収縮を拘束可能なテンションにより圧着され、 特に幅方向での自 由収縮を拘束されながら走行する。 Here, the interior of the hood 17 is set to a gas atmosphere of 100 ° C. or more by the gas circulation heating system J. Further, the gas circulation heating system J controls the gas supply / exhaust balance to the inside of the hood 17, and the pressure inside the hood 17 is several to several 10 mm smaller than the pressure outside the hood 17. It is set high. The sheet-like substance 35 introduced into the hood 17 is sucked and sucked by the suction mechanism of the suction fabric roll 8 into the lower fabric 36B circulating in the hood 17, and is taken out. The entrance is guided to the entrance of the rotating body 1 installed at the lower side of the 60 side. Then, the upper surface of the sheet-like material 35 comes into close contact with the rotating body 1, and the lower surface of the sheet-like material 35 is sandwiched between the lower-stage fabric 36 B and rotates around the rotating body 1 as the rotating body 1 rotates. I do. At this time, the sheet-like substance 3 5 becomes the fabric 3 6, the sheet-like material 35 is pressed against the rotating body 1 through the fabric tension roll 11 by a tension capable of restraining the drying and shrinking of the sheet-like material 35, and travels while restraining the free shrinkage particularly in the width direction.
回転体 1及びファブリック 3 6に挟まれつつ、 キヤノピーフード 1 5内 （すな わち、 蒸発空間 8 0 ) を周回するシ一卜状物質 3 5に対して、 回転体 1の外周方 向に設けられている吹出口 1 9から 1 0 0 °C以上の加熱ガスが 5 O m毎秒以上の 高速で吹き付けられる。吹出口 1 9からの加熱ガスは、通気度 7、 5 0 0 C C M以 上 （1 2 5 0 0 m W/ h r以上) の耐熱性のフアブリック 3 6に吹き付けて其の 空隙を通過して直接シート状物質 3 5を衝撃加熱し、 シー卜内水分を瞬間的に気 化蒸発 （プレッシャーフロー） させ乾燥する。  The sheet-like substance 35 circulating in the canopy hood 15 (that is, the evaporating space 80) while being sandwiched between the rotating body 1 and the fabric 36, toward the outer periphery of the rotating body 1. A heating gas at a temperature of 100 ° C or more is blown at a high speed of 5 Om / sec or more from the blowout port 19 provided at the air conditioner. The heated gas from the outlet 19 is blown onto a heat-resistant fabric 36 with an air permeability of 7,500 CCM or more (125,000 mW / hr or more), and passes directly through the air gap. The sheet material 35 is shock-heated, and the moisture in the sheet is instantaneously vaporized and evaporated (pressure flow) and dried.
このように、 シ一卜状物質 3 5は、 ファブリック 3 6の圧着拘束下においてシ -ト内部水分を直接加熱し其の内部からのプレツシャ一フローによる水分蒸発で 乾燥されるので、 シ一ト中の使用原料の種類を問わず瞬時に多孔質部を多数形成 し嵩高となリ、 水蒸気雰囲気中でリグニンやへミセルローズの軟化点温度を低め 物性強度が高く寸法安定性が良く、 水蒸気雰囲気中での高温加熱殺菌で生菌個数 を大幅に減じ、 湿潤紙力増強剤や乾燥紙力増強剤の紙力発現機構を大幅に高め、 印刷適正始め各種の特性に優れたシー卜の製造を可能とした。  As described above, the sheet-like material 35 is directly heated under the pressure constraint of the fabric 36 and dried by evaporating the water by pressurizing flow from the inside of the sheet. Regardless of the type of raw material used, a large number of porous parts are instantaneously formed and become bulky, the softening point temperature of lignin and hemicellulose is reduced in a steam atmosphere, and the physical strength is high and the dimensional stability is good, and the steam atmosphere The number of viable bacteria is greatly reduced by high-temperature heat sterilization in the room, the paper strength expression mechanism of the wet strength agent and the dry strength agent is greatly increased, and the production of sheets with excellent printing characteristics and various other properties is started. Made it possible.
—方、 1 0 0 °C以上の加熱ガス雰囲気中を周回し 1 0 o °c以上の過熱ガスを吹 付けられてシート状物質 3 5より蒸発した蒸発空間 8 0 (フード 1 7 ) 内部の水 蒸気は、 排気ガスとして吸込口 2 2及びサクシヨンファブリック口ール 8によつ て吸い込まれる。 吸い込まれた排気ガスはガス循環加熱系 Jに送られる。 排気ガ スは、 吸込函 2 3及ぴ吸込ダク 卜 2 4を経て排気スクリーン 3 3により紙粉ミス ト等の異物を除去されて循環ブロワ一 2 5により昇圧される。 これとともに、 排 気ガスは、 その出口で断熱膨脹ノズル 2 6からの過熱水蒸気により加熱され、 そ の大部分は給気ダクト 2 7を通過して給気函連結ダク卜 2 1及び給気函 2 0を経 た後、 吹出口 1 9よりファブリック 3 6を貫通してシート状物質 3 5に吹き付け られる。 なお、 断熱膨脹ノズル 2 6による循環ガス温度の加熱には一定の限度が あるので、 循環ガスを更に加熱して乾燥速度を早くする時は、 循環ガス熱交換器 である排気ヒータ 3 4により燃焼ガスまたは熱媒体を熱源として間接加熱するこ とができる。 その場合は断熱膨脹ノズル 2 6は閉鎖する。 On the other hand, the evaporating space 80 (hood 17) inside the heated gas atmosphere of 100 ° C or more was sprayed with superheated gas of 100 ° C or more and evaporated from the sheet material 35. Water vapor is sucked as exhaust gas through the suction port 22 and the suction fabric port 8. The sucked exhaust gas is sent to the gas circulation heating system J. The exhaust gas passes through a suction box 23 and a suction duct 24, and foreign matter such as paper dust is removed by an exhaust screen 33, and is pressurized by a circulation blower 25. At the same time, the exhaust gas is heated at its outlet by superheated steam from the adiabatic expansion nozzle 26, and most of it passes through the air supply duct 27 and is connected to the air supply box connecting duct 21 and the air supply box. After passing through 20, the sheet material 35 is sprayed from the outlet 19 through the fabric 36. Since there is a certain limit to the heating of the circulating gas temperature by the adiabatic expansion nozzle 26, when the circulating gas is further heated to increase the drying speed, combustion is performed by the exhaust heater 34, which is a circulating gas heat exchanger. Indirect heating using gas or heat medium as heat source Can be. In that case, the adiabatic expansion nozzle 26 is closed.
吹出口 1 9からシート状物質 3 5 (ファブリック 3 6 ) に対して吹き付けるガ スは、 フード 1 7内部からの排気ガスをガス循環加熱系 Jによって循環再加熱し たものである。 猶ポケット給気函 6 7を設置する時は、 1 0 0 °C以上の加熱ガス を 5 0 m/sec 以上の高速でファブリック 3 6に吹付け其の空隙を通過して直接シ ―卜状物質 3 5を衝撃加熱し、 其の排ガスはサクシヨンフアブリックロール 8に より吸い込まれ、 前記ガス循環加熱系 Jにより再加熱される。  The gas blown from the outlet 19 to the sheet material 35 (fabric 36) is obtained by circulating and reheating exhaust gas from the inside of the hood 17 by the gas circulation heating system J. When installing the pocket air supply box 67, a heating gas of 100 ° C or more is blown onto the fabric 36 at a high speed of 50 m / sec or more, and it passes directly through the space to form a sheet. The material 35 is shock-heated, and the exhaust gas is sucked by the suction fabric roll 8 and reheated by the gas circulation heating system J.
1本目の回転体 1 (つまり、 入口部 6 0側下段の回転体 1 ) を通過したシート 状物質 3 5は、 出口でサクシヨンフアブリックロ一ル 8によって吸引され、 この 1本目の回転体 1より離れる。 1本目の回転体 1から離れたシー卜状物質 3 5は、 再び、 上段側ファブリック 3 6 A及び下段側ファブリック 3 6 Bによつて挟み込 まれ、 上段のサクシヨンフアブリックロール 8によリ上側に吸引されて上段のフ アブリック 3 6 Aに取られて、上段に設置されている 2本目の回転体 1 (つまり、 入口部 6 0側上段の回転体 1 ) の入口に導かれる。 入口部 6 0側上段に設置され ている回転体 1の入口に導かれたシー卜状物質 3 5は、 シ一卜状物質 3 5の一方 の面 （この場合、 下面） が回転体 1に密着して支持され、 シート状物質 3 5の他 方の面 （この場合、 上面） が上段側ファブリック 3 6 Aに密着される。 シート状 物質 3 5は回転体 1の回転及ぴフアブリック 3 6の周回に伴って周回'走行する。 シー卜状物質 3 5はフアブリック 3 6によリフアブリックテンションロール 1 1 を介して回転体 1に対して強力に圧着され、拘束されながら走行する。このとき、 フアブリックテンションロール 1 1は、シ一ト状物質 3 5を圧着拘束するに際し、 シート状物質 3 5の伸縮を拘束可能なテンションによリ挟む。 本實施例ではファ ブリックテンションロール 1 1を各ドライヤー間に配置して、 全乾燥期間を通じ てテンションを略一定に保つ如くして居る。 然しファブリックテンション装置費 用を節減するには、 入口側に大きなスペースを用意して上下各一ヶ所にしても良 い。  The sheet-like substance 35 passing through the first rotating body 1 (that is, the lower rotating body 1 at the inlet 60 side) is sucked by the suction roll brick 8 at the outlet, and the first rotating body Move away from one. The sheet-like substance 35 separated from the first rotating body 1 is again sandwiched between the upper fabric 36A and the lower fabric 36B, and is again held by the upper fabric roll 8 of the upper fabric. It is sucked upward, taken up by the upper fabric 36A, and guided to the inlet of the second rotating body 1 (that is, the upper rotating body 1 on the inlet section 60 side) installed in the upper section. The sheet-like material 35 guided to the inlet of the rotating body 1 installed at the upper part of the inlet section 60 side has one surface (in this case, the lower surface) of the sheet-like material 35 connected to the rotating body 1. The other surface (in this case, the upper surface) of the sheet material 35 is closely attached to the upper fabric 36A. The sheet-like substance 35 runs around the rotation of the rotating body 1 and the rotation of the fabric 36. The sheet-like substance 35 is strongly pressed against the rotating body 1 by the fabric 36 via the lift tension roll 11 and travels while being restrained. At this time, when the sheet-like substance 35 is pressed and restrained, the fabric tension roll 11 is sandwiched by tension capable of restraining the expansion and contraction of the sheet-like substance 35. In the present embodiment, the fabric tension roll 11 is arranged between the dryers so that the tension is kept substantially constant throughout the entire drying period. However, in order to reduce the cost of the fabric tensioning equipment, a large space may be provided on the entrance side, and it may be located at each of the upper and lower locations.
回転体 1及びファブリック 3 6に挟まれつつ、 キヤノビ一フード 1 5内 （すな わち、 蒸発空間 8 0 ) を周回するシー卜状物質 3 5に対して、 吹出口 1 9から、 1 0 0 °C以上の加熱ガスが 5 O m/ s e c .以上の速度で吹き付けられる。一方、 吸込口 2 2からは、 蒸発空間 8 0 (フード 1 7 ) 内部のガスが吸い込まれ、 吸い 込まれたガスは排気ガスとしてガス循環加熱系 Jに送られる。 The sheet-like substance 35 circulating in the canopy hood 15 (that is, the evaporating space 80) while being sandwiched between the rotating body 1 and the fabric 36, from the outlet 19 to 10 Heated gas at 0 ° C or more is blown at a speed of 5 O m / sec or more. on the other hand, The gas inside the evaporation space 80 (hood 17) is sucked from the suction port 22, and the sucked gas is sent to the gas circulation heating system J as exhaust gas.
以下、 前記と同様の乾燥が複数の回転体 1のそれぞれについて繰り返し行われ る。 複数の回転体 1の間を走行し、 最後の回転体 1を通過したシート状物質 3 5 は出口部 6 1に導かれ、 サクシヨンフアブリックロール 8のサクシヨン帯より加 熱ガスを逆噴射して、 排紙用シーリングブランケット 4 1にシー卜 3 5を渡し、 出口用ファブリック 1 2との間に挟まれて進行し、 更にシーリングピンチロール 3 8により挾まれてフード 1 7の出口部 6 1より外部に搬出される。  Hereinafter, the same drying as described above is repeatedly performed for each of the plurality of rotating bodies 1. The sheet-like substance 35 traveling between the plurality of rotating bodies 1 and passing through the last rotating body 1 is guided to the outlet 6 1, and reversely injects the heated gas from the suction zone of the suction fabric roll 8. Then, the sheet 35 is passed to the discharge sealing blanket 4 1, and is advanced while being sandwiched between the exit fabric 12 and the outlet pin 6 1 of the hood 17 by being further sandwiched by the sealing pinch rolls 38. It is carried out more.
以上説明したように、 シート状物質 3 5を支持する回転体 （回転シリンダ） 1 の径方向外方からフアブリック 3 6に向かって加熱ガスを吹き付けることによつ て、 湿潤状態のシー卜状物質 3 5を外部加熱を主体として効率良く乾燥すること ができる。 このとき、 シート状物質 3 5を、 通気性のファブリック 3 6によって 回転体 1 との間で挟みつつ加熱ガスを吹き付けることにより、 シート状物質 3 5 の伸縮を抑え、 断紙を皆無とし主として過熱水蒸気から成る 1 0 0 °C以上の加熱 ガスによる衝撃乾燥で、 急速な直接水分蒸発によリ多孔質で嵩だかな強靭で印刷 適正に優れたシ一トを製造することができる。 また、 フード 1 7を密閉構造とし たことにより、 フ一ド外部から侵入する冷風に起因するフード内局所の冷却によ る結露の発生を防止できる。  As described above, the heating sheet is blown from the radial outside of the rotating body (rotating cylinder) 1 that supports the sheet-like material 35 toward the fabric 36, so that the wet sheet-like material is obtained. 35 can be efficiently dried mainly by external heating. At this time, by blowing the heating gas while sandwiching the sheet-like substance 35 between the rotating body 1 and the air-permeable fabric 36, the expansion and contraction of the sheet-like substance 35 is suppressed, and there is no paper breakage, and mainly the overheating is performed. Shock drying with a heating gas of 100 ° C or more consisting of water vapor makes it possible to produce a porous, bulky, tough and print-friendly sheet by rapid direct moisture evaporation. In addition, since the hood 17 has a closed structure, it is possible to prevent the occurrence of dew condensation due to local cooling in the hood caused by cold air entering from outside the hood.
なお、 ガス循環ブロワ一 2 5によリ昇圧された水蒸気の一部は、 ガススクラバ - 2 8においてミス卜や異物、 非凝縮ガスを脱気後、 ガスコンプレッサ 2 9によ リ断熱圧縮して昇圧加熱し、 加圧蒸気管 3 0、 排気制御ダンバ一又は弁 4 2を経 て、 過熱水蒸気使用時はゥ： Lットパートより持ち込まれる水蒸気重量を、 加熱湿 リ空気使用時は更に補給する新空気より持ち込まれる水蒸気重量との和に相当す る水蒸気を含む高温高湿度空気を、 他の工程に供給して利用できる。 立ち上げ時 等には、 その一部で、 前述のように断熱膨脹ノズル 2 6を経て、 再循環系の加熱 ガスを加熱することもできる。 また、 メークアップ蒸気管 3 2より抄紙機立ち上 げ時間短縮の為低圧水蒸気を補給する事も可能だが、 各蒸気の流量調節用に蒸気 加減弁 3 1を調節して酸素濃度を自動制御する。 また、 シート状物質 3 5の幅方 向の水分むらを制御するために、 キヤノピーフード 1 5内の吹出口 1 9を幅方向 でそれぞれ分割して吹出しガス量を制御することも可能である。 A part of the steam pressurized by the gas circulation blower 25 is degassed in the gas scrubber 28 to remove mist, foreign matter, and non-condensed gas, and then adiabatically compressed by the gas compressor 29 to increase the pressure. Heated, via the pressurized steam pipe 30 and the exhaust control damper or valve 42 When using superheated steam 新: The weight of steam brought in from the L-part is replenished when heating, moist and air is used. High-temperature, high-humidity air containing steam equivalent to the sum of the weight of steam carried in can be supplied to other processes and used. At the time of startup, for example, the heating gas of the recirculation system can be heated through a part of the adiabatic expansion nozzle 26 as described above. It is also possible to supply low-pressure steam from the make-up steam pipe 32 to shorten the paper machine start-up time, but automatically control the oxygen concentration by adjusting the steam control valve 31 to adjust the flow rate of each steam. . In addition, in order to control the moisture unevenness in the width direction of the sheet material 35, the outlet 19 in the canopy hood 15 is set in the width direction. It is also possible to control the amount of blown gas by dividing each.
なお、 サクシヨンフアブリックロール 8のサクシヨン帯それぞれに制御弁を設 け、 該制御弁を選択して開閉することによって、 上段または下段の回転体 1のそ れぞれを選択してシ一ト状物質 3 5を通過させることにより、 シート状物質 3 5 の力一ル度ゃ平滑度の表裏差を適宜に調節することができる。  A control valve is provided in each of the suction zones of the suction fabric roll 8, and the control valve is selected and opened / closed, thereby selecting each of the upper and lower rotating bodies 1 and selecting the seat. By passing the sheet-like substance 35, the difference between the front and back of the force-degree / smoothness of the sheet-like substance 35 can be appropriately adjusted.
排気ガスのうち、 シート状物質 3 5から蒸発する水蒸気を含む 1 0 0 °C以上の 余剰ガスを他の装置の熱源として再利用することができる。 即ち塗工機や他の抄 紙機等の乾燥熱源として、 其の外気加熱用に低圧損の板型熱交換器と低流速のダ ク ト等を経由して、 タ一ボブロワ一等低圧送風機で送気する。 又余剰ガスを間接 耐圧熱交換器に供給して、 低圧水蒸気を発生させ利用しても良い。 更には余剰ガ スを復水蒸気タービン原動機 （又は発電機） に供給して其の真空段で動力を回収 しても良い。 又は前記低圧水蒸気か、 ガスコンプレッサ 2 9により加圧して、 水 蒸気アキュムレータ一に飽和水として蓄熱し、 他工程よりのピーク需要に応じて 低圧蒸気として供給しても良い。  Of the exhaust gas, surplus gas of 100 ° C. or more including water vapor evaporated from the sheet material 35 can be reused as a heat source of another device. That is, as a drying heat source for a coating machine or other paper machine, a low-pressure blower such as a turbo blower, etc., through a plate heat exchanger with low pressure loss and a low-flow duct for heating the outside air. In the air. In addition, surplus gas may be supplied to an indirect pressure-resistant heat exchanger to generate and use low-pressure steam. Further, the surplus gas may be supplied to a condensate steam turbine prime mover (or a generator) to recover power in the vacuum stage. Alternatively, the low-pressure steam may be pressurized by a gas compressor 29 to store heat as saturated water in a water vapor accumulator, and supplied as low-pressure steam according to peak demand from another process.
吹出口 1 9から吹き付ける加熱ガスとしては、 ガス循環加熱系 Jで循環ガスを 再加熱した 1 0 0 °C以上の過熱水蒸気を用いる。 湿潤状態のシート状物質 3 5に よりフード 1 7内部に持ち込まれる水蒸気分と略相当する 1 0 0 °C以上の過熱水 蒸気は余剰になるので、 ガス循環加熱系 Jのガス排出部排気制御ダンパー又は弁 4 2によりフード 1 7外部に排気し、 他の工程での過熱水蒸気源として有効に利 用する。 猶用途に依っては、 排気ヒータ 3 4により他の循環ガスと共に再加熱後 供給しても良い。 即ち、 後述の段落 （0 1 8 5 ) に詳細に示す如くボイラー燃料 発熱量に対し余剰水蒸気の顕熱が 8 3 . 9 %もあり、実際の消費'燃料発熱量は差し 引き 6 6 3 . 4 X 1 O j J/BD 頓紙で、 従来の高圧容器乾燥筒乾燥法の 5、 2 3 6 . 8 >< 1 03KJ/BD 頓紙に比し実に 1 2 , 7 %の所要熱量と成り今までの想像を絶す る省エネルギーが達成出来た。 即ち従来の高圧容器乾燥筒乾燥法では、 フード排 気顕熱に 7 3 . 6 %がドレン顕熱に 7 . 9 %と計 8 1 . 5 %が無駄に大気中に放出さ れていたのを他工程で有効に活用する事に成る。 As the heating gas blown from the outlet 19, superheated steam of 100 ° C. or more obtained by reheating the circulating gas in the gas circulation heating system J is used. Superheated water of 100 ° C or more, which is approximately equivalent to the amount of water vapor brought into the hood 17 by the wet sheet-like material 35, becomes excessive, so exhaust control of the gas discharge part of the gas circulation heating system J The gas is exhausted to the outside of the hood 17 by the damper or the valve 42, and is effectively used as a superheated steam source in other processes. Depending on the intended use, it may be supplied after reheating together with other circulating gas by the exhaust heater 34. In other words, as shown in detail in paragraph (0185) below, the sensible heat of the excess steam is 83.9% of the calorific value of the boiler fuel, and the actual consumed fuel calorific value is subtracted. With 4 X 1 O j J / BD paper, the required calorie is actually 1, 2 or 7% compared to the conventional high-pressure vessel drying cylinder drying method of 5, 2 36.8><10 3 KJ / BD paper. Thus, energy savings unimaginable up to now have been achieved. That is, in the conventional high-pressure vessel drying tube drying method, 73.6% of the sensible heat of the hood exhaust gas and 7.9% of the sensible heat of the drain were released to the atmosphere, a total of 81.5%. Can be effectively used in other processes.
又吹出口 1 9から吹き付ける加熱ガスとして、 ガス循環加熱系 Jで循環ガスを 再加熱した、 乾球温度 8 0 °C以上で露点温度 6 0 °C以上の加熱湿り空気を用いる 事が出来る。 湿潤状態のシート状物質 3 5によりフード 1 7内部に持ち込まれる 水蒸気重量と他の経路より持ち込まれる水蒸気重量との和に略相当する水蒸気を 含む乾球温度 7 0 °C以上の高温高湿度空気は余剰になるので、 ガス循環加熱系 J のガス排出部排気制御ダンバ一又は弁 4 2によリフ一ド 1 7外部に排気し、 この 排気量に対して乾燥空気重量換算で略等量の低湿度外気を給気ダンパー又は弁 3 7によリ該フード 1 7内部に給気する。猶過熱水蒸気 1 0 0 %には比肩出来ぬが、 加熱湿り空気でも絶対湿度を 1 kg/kg' DA以上に高めれば、 略遜色無い省エネル ギーを達成可能である。 In addition, as the heating gas blown from the outlet 19, circulating gas is heated again by the gas circulation heating system J, and heated moist air with a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more is used. Can do things. High-temperature, high-humidity air with a dry-bulb temperature of 70 ° C or more, containing steam approximately equivalent to the sum of the weight of water vapor brought into the hood 17 by the wet sheet-like substance 35 and the weight of water vapor brought in from other routes Is exhausted, the exhaust gas is exhausted to the outside of the refrigerating device 17 by the exhaust control damper or valve 42 of the gas exhaust system of the gas circulation heating system J. Low humidity outside air is supplied into the hood 17 by an air supply damper or a valve 37. Although it is incomparable with 100% of superheated steam, even if it is heated and humid air, if the absolute humidity is raised to 1 kg / kg 'DA or more, it is possible to achieve almost the same energy-saving energy.
又吹出口 1 9から吹き付ける加熱ガスとして、 ガス循環加熱系 Jで循環ガスを 再加熱した、 乾球温度 1 0 0 °C以上で、 8 0 %以上の窒素ガスと 5 %内外の水蒸 気と溶剤ガスと酸素との混合ガスを用いる事が出来る。 湿潤状態のシー卜状物質 3 5によりフード 1 7内部に持ち込まれる水蒸気と溶剤ガスとに略相当する乾球 温度 8 0 °C以上の混合ガスは余剰になるので、 ガス循環加熱系 Jのガス排出部排 気制御ダンバ一又は弁 4 2によリ該フード 1 7外部に排気し、 溶剤ガスを水蒸気 より凝縮分離する事によリ、 公害源として近年問題化している溶剤を効率良く回 収すると共に、 溶剤による爆発事故等を皆無とし安心して乾燥を行うことができ る。  As the heating gas blown from the outlet 19, the circulating gas was reheated by the gas circulation heating system J. At a dry bulb temperature of 100 ° C or more, 80% or more of nitrogen gas and 5% of internal and external water vapor , A mixed gas of solvent gas and oxygen can be used. Since the mixed gas with a dry bulb temperature of 80 ° C or more, which roughly corresponds to the water vapor and solvent gas brought into the hood 17 by the wet sheet-like substance 35, becomes excessive, the gas in the gas circulation heating system J The exhaust gas is exhausted to the outside of the hood 17 by means of an exhaust gas control valve or valve 42, and the solvent gas is condensed and separated from the water vapor. In addition, there is no explosion accident due to solvent, etc., and drying can be performed with peace of mind.
キヤノピーフード 1 5を、 抄紙機乾燥パ一卜の何処のセクションに且はどの箇 所に設けるかは、 抄造する紙の品種や衝撃乾燥方法の目的により千差万別である が、 ①.乾燥速度の増速効果による乾燥パー卜のスペース節減、 ②.初期乾燥での 多孔質部の早期形成、 ③.初期乾燥での高温化による生菌数の削減、 ④.初期及び 中期乾燥での高温化による物性強度の増強、⑤.終期乾燥での高温化によるサイズ 剤や紙力増強剤等の効果増大、⑥.乾燥時間の大幅な短縮による抄紙機幅方向の収 縮量削減で、 縦横比のより良い紙の生産、 ⑦.終期乾燥でのカール度の調整、 ⑧. 漉き合せ抄紙機での層別乾燥度の調整、 等々で決定する。 猶全乾燥工程に亘リフ アブリック 3 6 Aと 3 6 Bに依り、 シート状物質 3 5をサンドイツチ状に挿んで 走行しても良い。 又出入口用ブランケット 1 2、 給排紙用シーリングブランケッ ト 3 9 , 4 1に代えて、フアブリック 3 6 Aと 3 6 Bとに依リ給排紙しても良く、 其の場合紙切れは皆無に成る。 《第 2実施形態》 Where to place the canopy food 15 in the paper machine drying pad and in which location depends on the type of paper to be made and the purpose of the impact drying method. Space saving of drying parts due to speeding up effect of drying speed, ②. Early formation of porous part in initial drying, ③. Reduction of viable bacteria by high temperature in initial drying, ④. Increased strength of physical properties by increasing temperature, ⑤. Increased effect of sizing agent and paper strength enhancer by increasing temperature in final drying, ⑥. Reduction of shrinkage in paper machine width direction by drastically shortening drying time, Production of paper with better ratio, ⑦. Adjustment of curl in final drying, ⑧. Adjustment of layer-by-layer drying in laminating machine, etc. Depending on the lift fabrics 36 A and 36 B throughout the drying process, the sheet-like material 35 may be inserted in a San-Germanic manner and run. Also, instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, paper may be supplied / discharged by fabrics 36A and 36B, in which case there is no paper breakage. Become. << 2nd Embodiment >>
次に、 本発明のシート状物質の乾燥装置の第 2実施形態について図 8、 図 9、 図 1 0を参照しながら説明する。 図 8は第 2実施形態に係る乾燥装置 D S 2を側 面から見た図である。 図 9は図 8の側断面図である。 図 1 0は乾燥装置のうち加 熱ガスの循環系統図である。 ここで、 以下の説明において、 上記実施形態と同一 又は同等の構成部分についてはその説明を省略もしくは簡略する。  Next, a second embodiment of the apparatus for drying a sheet-like substance of the present invention will be described with reference to FIGS. 8, 9, and 10. FIG. FIG. 8 is a diagram of a drying device DS2 according to the second embodiment as viewed from a side. FIG. 9 is a side sectional view of FIG. FIG. 10 is a diagram of a circulation system of a heating gas in the drying device. Here, in the following description, the description of the same or equivalent components as those in the above embodiment will be omitted or simplified.
乾燥装置 D S 2は、 シート状物質 3 5の一方の面を支持しつつ回転する回転体 (回転シリンダ） 1 と、 シート状物質 3 5の他方の面に接し、 回転体 1 との間で シ一ト状物質 3 5を挟みつつ回転体 1の回転に同期して移動する通気性のフアブ リック 3 6と、 回転体 1の径方向外方からファブリック 3 6に向けて加熱ガスを 吹き付ける吹出口 1 9と吸込口 2 2とを備えている。 回転体 1は上下 2段に複数 配置されている。 ファブリック 3 6は、 上段側の回転体 1に支持されたシート状 物質 3 5を挟むようにフード 1 7内部を周回するェンドレス構造の上段側フアブ リック 3 6 Aと、 下段側の回転体 1に支持されたシ一ト状物質 3 5を挟むように フード 1 7内部を周回するエンドレス構造の下段側ファブリック 3 6 Bとを有し ている。  The drying device DS 2 is provided between a rotating body (rotating cylinder) 1 that rotates while supporting one surface of the sheet-shaped material 35 and a rotating body 1 that contacts the other surface of the sheet-shaped material 35. A gas permeable fabric 36 that moves in synchronization with the rotation of the rotating body 1 while sandwiching the solid material 35, and an outlet that blows heated gas from the radial outside of the rotating body 1 toward the fabric 36 1 and a suction port 22 are provided. A plurality of rotating bodies 1 are arranged in upper and lower two stages. The fabric 36 includes an upper fabric 36 A of an endless structure that circulates inside the hood 17 so as to sandwich the sheet material 35 supported by the upper rotating body 1 and a lower rotating body 1. It has a lower fabric 36B of an endless structure that circulates inside the hood 17 so as to sandwich the supported sheet-like substance 35 therebetween.
上段の回転体 1には、 該上段の回転体 1に接続した回転軸 2の中心より上部側 に配置された回転体 1との間で蒸発空間 8 0を形成するキヤノピーフード 1 5が 夫々設けられている。 同様に、 下段の回転体 1には、 該下段の回転体 1に接続し た回転軸 2の中心よリ下部側に配置された回転体 1との間で蒸発空間 8 0を形成 するキヤノピーフード 1 5が夫々設けられている。 キヤノピ一フード 1 5は耐熱 性のパネルによリ構成されている。  A canopy hood 15 which forms an evaporation space 80 with the rotating body 1 disposed above the center of the rotating shaft 2 connected to the upper rotating body 1 is formed on each of the upper rotating bodies 1. Is provided. Similarly, the lower rotating body 1 has a canopy that forms an evaporation space 80 with the rotating body 1 disposed below the center of the rotating shaft 2 connected to the lower rotating body 1. Food 15 is provided for each. The canopy hood 15 is composed of heat-resistant panels.
狭いフード 1 7中で衝撃範囲角を広げ同時に昇降性の改善と、 回転体 1 との距 離調節の容易化を考え、 キヤノピーフード 1 5を左右に数分割 （實施例では二分 割） して其の左右と中央で昇降装置 1 6によって独立して昇降可能とした。 以上説明したように、 キヤノピーフード 1 5のそれぞれを任意のセクションに 分割構造とし、 この分割キヤノビ一フードを昇降装置 1 6によって独立して昇降 可能とすることにより、 キヤノピーフード 1 5と回転体 1との間で形成される蒸 発空間 8 0の空間の大きさを任意に設定することができる。 そして、 蒸発空間 8 0の空間の大きさを任意に設定することにより、 シ一ト状物質 3 5に対する乾燥 条件を容易に変更することができるので、 シート状物質 3 5の品質と省ェネ性の 向上を図ることができる。 The canopy hood 15 is divided into several parts on the left and right (in the actual example, it is divided into two parts) in order to increase the impact range angle in the narrow hood 17 and at the same time improve the elevating property and facilitate the adjustment of the distance to the rotating body 1. The right and left and the center can be raised and lowered independently by the lifting device 16. As described above, each of the canopy hoods 15 is divided into arbitrary sections, and the divided canopy hoods can be independently lifted and lowered by the lifting / lowering device 16 so as to rotate with the canopy hoods 15. The size of the evaporation space 80 formed with the body 1 can be arbitrarily set. And the evaporation space 8 By arbitrarily setting the size of the space 0, it is possible to easily change the drying conditions for the sheet material 35, thereby improving the quality and energy saving of the sheet material 35. be able to.
前述したように、 回転体 1は複数設けられているとともに、 複数の回転体 1の それぞれは上下 2段に配置されている。 回転体 1の上下間にはフアブリックロ一 ル 8 ' が設けられている。 このファブリックロール 8 ' はファブリックロール軸 受 9によって回転可能に支持されている。 ここで、 サクシヨンファブリックロー ル 8は、 夫々フード 1 7の出入リロにのみ各 1本配置されている。  As described above, the plurality of rotators 1 are provided, and each of the plurality of rotators 1 is arranged in upper and lower two stages. A fabric roll 8 ′ is provided between the top and bottom of the rotating body 1. The fabric roll 8 ′ is rotatably supported by a fabric roll bearing 9. Here, each of the suction fabric rolls 8 is arranged only in the entrance and exit relo of the hood 17 respectively.
フード 1 7の両側には、 フード 1 7内部に対するシート状物質 3 5の入口部 6 0及び出口部 6 1がそれぞれ設けられている。 これら入口部 6 0及ぴ出口部 6 1 のそれぞれには、 図 4 , 図 5を用いて説明した、 フード 1 7外部と内部とのガス の移動を抑止するシール部 （シール機構） が設けられている。  On both sides of the hood 17, an inlet portion 60 and an outlet portion 61 of the sheet-like material 35 with respect to the inside of the hood 17 are provided, respectively. Each of the inlet section 60 and the outlet section 61 is provided with a seal section (seal mechanism) for suppressing the movement of gas between the outside and the inside of the hood 17 described with reference to FIGS. ing.
上段側回転体 1と下段側回転体 1 との間には、 サクシヨンファブリックボック ス 5 0が設けられている。 このサクシヨンファブリックボックス 5 0は、 上段側 回転体 1と下段側回転体 1 との間で走行するシート状物質 3 5が受け渡される位 置に其の表裏面に対向するように、 2つずつ設けられている。  A suction fabric box 50 is provided between the upper rotating body 1 and the lower rotating body 1. The suction fabric box 50 is provided with two sheets so that the sheet-like material 35 traveling between the upper rotating body 1 and the lower rotating body 1 is delivered and opposed to the front and back surfaces thereof. Are provided.
サクシヨンフアブリックボックス 5 0近傍には、三角箱型の吸込み函 4 8 'と、 この給気函 4 8 ' に接続した排気連結ダク 卜 4 9 ' とが設けられている。 排気連 結ダク ト 4 9 ' はフレキシブルジョイントを介して吸込みダク ト 2 4に接続して いる。  In the vicinity of the suction brick box 50, a triangular box-shaped suction box 48 'and an exhaust connection duct 49' connected to the air supply box 48 'are provided. The exhaust connection duct 49 'is connected to the suction duct 24 via a flexible joint.
乾燥装置 D S 2のガス循環加熱系 Jは、 図 1 0、 2 2、 2 3に示すように、 回 転体 1の駆動側に設けられ、 排気中のミストゃ紙粉等の異物を除去する排気スク リーン 3 3、 燃焼ガスまたは熱媒体例えば水素ガス燃料と酸素とを使用する水素 ガスタービンからの高温排ガス等を熱源とする複数の循環ガス熱交換器 3 4、 ガ ス循環ブロワ一 2 5、断熱膨脹ノズル 2 6、給気ダク ト 2 7、ガススクラバー（蒸 気スクラバ一） 2 8、 ガスコンプレッサ （スチームコンプレッサ） 2 9、 加圧蒸 気管 3 0、 蒸気加減弁 3 1、 メークアップ蒸気管 3 2、 給気制御ダンパー又はべ ン 3 7、 排気制御ダンパー又は弁 4 2とを備えており、 それぞれ前述した吸込ダ ク 卜 2 4及び給気函連結ダク ト 2 1と蒸気ヘッダー 1 0 0とに接続して水蒸気を 循環させる。 The gas circulation heating system J of the drying device DS 2 is provided on the drive side of the rotating body 1 as shown in FIGS. 10, 22 and 23 to remove foreign matter such as mist and paper powder in the exhaust gas. Exhaust screen 33, multiple circulating gas heat exchangers 34 using heat gas such as high temperature exhaust gas from a hydrogen gas turbine using a combustion gas or a heat medium such as hydrogen gas fuel and oxygen, gas circulation blower 25 , Adiabatic expansion nozzle 26, air supply duct 27, gas scrubber (steam scrubber) 28, gas compressor (steam compressor) 29, pressurized steam tube 30, steam control valve 31, makeup steam It is equipped with a pipe 32, an air supply control damper or van 37, an exhaust control damper or valve 42, and the suction duct 24 and the air supply box connecting duct 21 and the steam header 10 described above, respectively. Connect to 0 and steam Circulate.
本発明では全部の回転体 1やロール類は密閉フード内に配置するが、 既設乾燥 部を利用する時に、 以下のシール方法を一部に採用する事も出来る。  In the present invention, all the rotating bodies 1 and rolls are arranged in a closed hood. However, when the existing drying unit is used, the following sealing method may be partially adopted.
即ち、 回転体 1ゃサクシヨンファブリックロール 8力 キヤノビ一フード 1 5や フ一ド 1 7と接する面には、 （0 0 7 0 )に詳述したラビリンス構造やフェル卜面 またはブラシ面等の耐熱シール機構を介して、 外部の空気がフード 1 7内に侵入 したり、 内部の蒸発水蒸気が多量に流出しないようにする。 That is, the rotating body 1 ゃ suction fabric roll 8 force The surface in contact with the canopy hood 15 and the hood 17 has a labyrinth structure, a felt surface or a brush surface, etc. Prevent external air from entering the hood 17 or a large amount of internal water vapor from flowing out through the heat-resistant seal mechanism.
ワイヤ一パートで抄造されプレスパー卜で水分 5 0 ~ 6 0 %に予備脱水された 湿潤状態のシ一ト状物質 3 5は、入口部 6 0からフード 1 7内部に導入された後、 サクシヨンファブリックロール 8により吸引される。 シート状物質 3 5は、 図 8 に示すように、 まず、 フード 1 7内部において周回する下段側ファブリック 3 6 Bに吸着され、 下段側の回転体 1に導かれる。 下段側の回転体 1に導かれたシ一 卜状物質 3 5は、 回転体 1の外周面と下段側フアブリック 3 6 Bとの間に挟まれ つつ、 吹出口 1 9よリ加熱ガスを吹き付けられる。  The wet sheet-like substance 35, which was made with one part of wire and pre-dehydrated with a press part to a water content of 50 to 60%, was introduced into the hood 17 from the inlet 60, and then sucked. Sucked by fabric roll 8. As shown in FIG. 8, the sheet material 35 is first adsorbed on the lower fabric 36 B circling inside the hood 17 and guided to the lower rotating body 1. The sheet-like substance 35 guided to the lower rotating body 1 is blown with heated gas from the outlet 19 while being sandwiched between the outer peripheral surface of the rotating body 1 and the lower fabric 36 B. Can be
下段側の回転体 1に支持されつつ走行したシート状物質 3 5は、 やがて、 この 下段側回転体 1から離間する。 そして、 2つのサクシヨンファブリックボックス 5 0の間を通って、 上段側の回転体 1に渡される。 上段側の回転体 1に渡された シート状物質 3 5は、 上段側回転体 1と上段側フアブリック 3 6 Aとの間に挟ま れつつ走行し、 前記と同様の乾燥処理を施される。  The sheet-like substance 35 that has traveled while being supported by the lower rotating body 1 eventually separates from the lower rotating body 1. Then, it passes between the two suction fabric boxes 50 and is passed to the upper rotating body 1. The sheet material 35 passed to the upper rotating body 1 travels while being sandwiched between the upper rotating body 1 and the upper fabric 36A, and is subjected to the same drying treatment as described above.
ここで、 吹出口 1 9からの加熱ガスの吹き付けによってシート状物質 3 5より 蒸発した水蒸気を含む 1 0 0 °C内外のガスは、 キヤノビ一フード 1 5内 （蒸発空 間 8 0内） の吸込口 2 2と、 サクシヨンファブリックボックス 5 0を介して吸引 される。吸引された排気ガスは、ガス循環加熱系 Jによって循環再加熱された後、 吹出口 1 9から再ぴフード 1 7内部に供給される。  Here, the gas inside and outside of 100 ° C including water vapor evaporated from the sheet material 35 by spraying the heated gas from the blowout port 19 is discharged into the canopy hood 15 (in the evaporation space 80). It is sucked through the suction port 22 and the suction fabric box 50. The sucked exhaust gas is circulated and reheated by the gas circulating heating system J, and then supplied from the outlet 19 to the inside of the regeneration hood 17.
以上説明したように、 上段に配置された回転体 （回転シリンダ） 1と下段に配 置された回転体 （回転シリンダ） 1 との間に、 自由走行するシート状物質 3 5の 夫々上段と下段の回転シリンダ 1の外周側に、 フアブリック 3 6 Aと 3 6 Bとを 介して、 フアブリック 3 6と滑リ枠で接触するサクシヨンフアブリックボックス 5 0を設け、 このサクシヨンフアブリックボックス 5 0によって、 走行するシー ト状物質 3 5から排気ガスを吸い込むことができる。 猶全乾燥工程に亘リフアブ リック 3 6 Aと 3 6 Bに依り、 シー卜状物質 3 5をサンドィツチ状に挿んで走行 しても良い。 又出入口用ブランケッ卜 1 2、 給排紙用シーリングブランケット 3 9 , 4 1に代えて、 ファブリック 3 6 Aと 3 6 Bとに依り給排紙しても良く、 其 の場合紙切れは皆無に成る。 As described above, between the rotating body (rotating cylinder) 1 arranged at the upper stage and the rotating body (rotating cylinder) 1 arranged at the lower stage, the upper and lower stages of the free-running sheet-like material 35 are respectively disposed. On the outer peripheral side of the rotary cylinder 1 of the rotary cylinder 1, there is provided a suction fabric box 50 that comes into contact with the fabric 36 with a smooth frame via the fabrics 36 A and 36 B. By the running sea Exhaust gas can be sucked from the gaseous substance 35. Depending on the lift bricks 36 A and 36 B throughout the drying process, the sheet-like substance 35 may be inserted in a sandwich to run. Also, instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, paper may be supplied / discharged using fabrics 36A and 36B, in which case there will be no paper breakage. .
《第 3実施形態》  << Third embodiment >>
次に、 本発明のシート状物質の乾燥装置の第 3実施形態について図 1 1、 図 1 2を参照しながら説明する。 図 1 1は回転体 （回転シリンダ） 1を 2段式として 設置した場合の実施例を示す側面図、 図 1 2は加熱ガスの循環系統図である。 こ こで、 以下の説明において、 前述した各実施形態と同一又は同等の構成部分につ いてはその説明を簡略もしくは省略する。  Next, a third embodiment of the apparatus for drying a sheet-like substance according to the present invention will be described with reference to FIGS. 11 and 12. FIG. Fig. 11 is a side view showing an embodiment in which the rotating body (rotating cylinder) 1 is installed as a two-stage type, and Fig. 12 is a circulation diagram of a heated gas. Here, in the following description, the description of the same or equivalent components as those of the above-described embodiments will be simplified or omitted.
図 1 1、 図 1 2に示すように、 乾燥装置 D S 3は、 上下 2段に設置された複数 の回転体 1を備えている。 抄紙機楝建屋の独立した機械基礎 1 3上にアンカーボ ルトにより固定したソールプレート 1 4にドライヤーフレーム 4を組み上げ、 必 要数の回転体 1を回転軸 2と回転体軸受 3によりそれぞれ設置する。 多筒式回転 体を設置する時は、 本実施例に示す如く上下 2段にそれぞれ千鳥型に配置するの が工場スペースを有効に利用する上で有利である。  As shown in FIG. 11 and FIG. 12, the drying device DS 3 includes a plurality of rotating bodies 1 installed in upper and lower two stages. Assemble the dryer frame 4 on the sole plate 14 fixed by anchor bolts on the independent machine foundation 13 of the paper machine connection building, and install the required number of rotating bodies 1 with the rotating shaft 2 and the rotating body bearings 3 respectively. When a multi-cylinder type rotating body is installed, it is advantageous to arrange the upper and lower two stages in a staggered manner as shown in this embodiment in order to effectively use the factory space.
上段の回転体 1にはその回転軸 2の中心より上部に、 下段の回転体 1には回転 軸 2の中心より下部に、 夫々耐熱性のパネルにより構成したキヤノピ一フード 1 5を昇降装置を介して上下動可能にドライヤーフレーム 4上に設置する。 各回転 体 1の上下間には、 キヤノビ一フード 1 5の延長上にエンドレス構造のフアブリ ック 3 6を挟んで、 スクェア一フード 4 7を設け平面蒸発室を構成する。 スクェ ァ一フード 4 7により、 上段に設置された回転体 1 と下段に設置された回転体 1 との間で走行するシート状物質 3 5の表裏面に対して加熱ガスを吹き付ける第 2 加熱ガス供給部が構成される。 又フ一ド 1 7の出入リロにはそれぞれ 1本のサク シヨンフアブリックロール 8をフアブリックロール軸受 9によリ、 ドライヤーフ レーム 4に設置する。  A canopy hood 15 composed of a heat-resistant panel is placed on the upper rotating body 1 above the center of the rotating shaft 2 and below the center of the rotating shaft 2 on the lower rotating body 1. It is installed on the dryer frame 4 so that it can move up and down. A square hood 47 is provided between the upper and lower sides of each rotating body 1 with an endless fabric 36 extending from the canopy hood 15 to form a flat evaporation chamber. A second heating gas that blows a heating gas to the front and back surfaces of the sheet-like substance 35 that travels between the rotating body 1 installed on the upper stage and the rotating body 1 installed on the lower stage by the square hood 47. A supply unit is configured. In addition, one suction-fabric roll 8 is installed on the dryer frame 4 with a fabric roll bearing 9 for each of the entrance and exit re-rolls of the hood 17.
上段及び下段のキヤノピーフード 1 5やドライヤーフレーム 4を含む乾燥パ一 ト全体の外周には、 断熱性のパネルにより構成したフード 1 7と、 点検掃除用の フード開閉装置 1 8とを設置して、 シート状物質 3 5の出入口を除いて全密閉と する。 フード中には回転体 1の回転体面及びその延長上に、 隣接する回転体 1の ポケット部に到る略平面状の蒸発面で、 シート状物質 3 5と接触している面に約 1 0〜 2 5 m mの間隔を介して吹出口 1 9と吸込口 2 2 (それぞれ丸孔またはス リット） を配置し、 側面をエンドレスファブリック 3 6の出し入れ用に開閉式と した箱型函スクエア一フード 4 7を、 夫々馬蹄形状に配列して設置し、 又キヤノ ピーフード 1 5中には、 吹出口 1 9と直結して複数の環状箱型でそれぞれ給気函 連結ダク ト 2 1 と接続した給気函 2 0を、 吸込スペースを充分に確保する為に間 隔を置いて設置し、 駆動側で給気函連結ダク ト 2 1にフレキシブルジョイントを 介して給気ダク卜 2 7を接続する。 On the outer periphery of the entire drying pad, including the upper and lower canopy hoods 15 and the dryer frame 4, there is a hood 17 composed of heat insulating panels, A hood opening / closing device 18 is installed, and it is completely sealed except for the entrance and exit of the sheet material 35. In the hood, on the surface of the rotating body of the rotating body 1 and its extension, an approximately planar evaporation surface reaching the pocket portion of the adjacent rotating body 1 and approximately 10% on the surface in contact with the sheet material 35 A box-shaped box-shaped hood with an outlet 19 and an inlet 22 (each with a round hole or a slit) separated by a distance of ~ 25 mm, and a side that can be opened and closed to access the endless fabric 36 4 and 7 are arranged in a horseshoe shape, respectively, and in the canopy hood 15, a plurality of annular boxes are connected directly to the air supply box connection duct 21 by being directly connected to the air outlet 19. The air box 20 is installed at an interval to secure a sufficient suction space, and the air supply duct 27 is connected to the air box connection duct 21 via a flexible joint on the drive side.
ポケット部の略平面状の蒸発面にはそれぞれ吹出口 1 9と直結して複数の三角 箱型でそれぞれ給気連結ダク 卜 4 9と接続した給気函 4 8を吸込スペースを充分 に確保する為に間隔をおいて設置し駆動側で給気連結ダク ト 4 9にフレキシブル ジョイントを介して給気ダク ト 2 7を接続する。  In the substantially flat evaporation surface of the pocket, a plurality of triangular box-type air supply boxes 48 connected directly to the air outlets 19 and connected to the air supply connection ducts 49 respectively to secure sufficient suction space The air supply duct 27 is connected to the air supply connection duct 49 on the drive side via a flexible joint.
本発明では全部の回転体 1やロール類は密閉フード内に配置するが、 既設乾燥 部を利用する時に、 以下のシール方法を一部に採用する事も出来る。 即ち、 回転 体 1ゃサクシヨンフアブリックロール 8がキヤノピ一フード 1 5やフード 1 7と 接する面は、 ( 0 0 7 0 )に詳述したラビリンス構造やフェルト面またはブラシ面 等の耐熱シール機構を介して、 外部の空気がフード内に侵入したり、 内部の蒸発 水蒸気が多量に流出しないようにする。  In the present invention, all the rotating bodies 1 and rolls are arranged in a closed hood. However, when the existing drying unit is used, the following sealing method may be partially adopted. In other words, the surface where the rotating body 1 ゃ the suction roll brick 8 comes into contact with the canopy hood 15 and the hood 17 is a heat-resistant sealing mechanism such as a labyrinth structure and a felt surface or a brush surface described in (0700). Prevent the outside air from entering the hood and the large amount of evaporated water vapor from flowing out through the hood.
ワイヤ一パートで抄造されプレスパ一卜で水分 6 0〜5 0 %に脱水された湿潤 状態のシート状物質 3 5は、 断熱性のパネルにより完全密閉されたフード 1 7入 口で、 入口用ファブリック 1 2によリリードされ、 上下のシ一リングピンチ口一 ル 3 8により給紙用シーリングブランケット 3 9との間に挟まれて進行し、 スチ —厶ボックス 4 3とサクシヨンボックス 4 0間で急速に凝縮加熱され、 密閉フー ド中で周回するサクシヨンフアブリックロール 8のサクシヨン帯によリ、 先ず下 段のファブリックロール 1 0を経て上つてくる下段側ファブリック 3 6 Bに取ら れて、 下段入口側に設置された回転体 1入口に到り、 上段のファブリックロール 1 0を経て下りて来るフアブリック 3 6 Aとの間にシート状物質 3 5が挟まれて、 夫々吹出口 1 9と吸込口 2 2を有する最初のキヤノピーフード 1 5内を回転体 1 に沿って周回し、 シー卜状物質の上下面は上下のフアブリック 3 6により挟まれ ながらフアブリックテンションロール 1 1を介して回転体 1面に強力に圧着され て拘束下に乾燥される。 The wet sheet-like material 35, which is made with a wire part and dehydrated to a water content of 60 to 50% with a press pad, is a hood 17 that is completely sealed by heat-insulating panels. It is re-read by 1 2, and is sandwiched between the paper-feeding sealing blanket 39 by the upper and lower sealing pinch openings 38, and moves between the steam box 43 and the suction box 40. It is rapidly condensed and heated, and is taken up by the lower fabric 36 B, which first passes through the lower fabric roll 10, according to the suction zone of the suction roll brick 8 circling in the closed hood. The sheet material 35 is sandwiched between the rotating body 1 installed at the lower entrance side and the fabric 3 6 A coming down through the upper fabric roll 10, It circulates along the rotating body 1 inside the first canopy hood 15 each having an outlet 19 and an inlet 22, and the upper and lower surfaces of the sheet-like material are tensioned while being sandwiched by upper and lower fabrics 36. It is strongly pressed to the rotating body 1 surface via the roll 11 and dried under restraint.
1本目の回転体 1を通過したシー卜状物質 3 5は、 其の但両フアブリック 3 6 に挟まれながら、 ほぼ平面よリなリ夫々吹出口 1 9と吸込口 2 2を有するスクェ ァーフード 4 7の蒸発面で、 夫々高速高温ガスの衝撃力で上下 2枚のェンドレス フアブリック 3 6により挾みこまれて強力に圧着されて拘束下に更に乾燥され、 夫々吹出口 1 9と吸込口 2 2を有する第二のキヤノピーフード 1 5と連続した馬 蹄形配置で、 再び上段に設置された 2本目の乾燥体 1入口に到り、 前記と同様の 乾燥が繰り返される。  The sheet-like substance 3 5 passing through the first rotating body 1 is, while being sandwiched between the two fabrics 36, a substantially hood-shaped square hood 4 having an outlet 19 and an inlet 22. At the evaporating surface of No.7, it was sandwiched between the upper and lower two endless fabrics 36 by the impact force of the high-speed high-temperature gas, and was strongly pressed and further dried under restraint.The outlet 19 and the inlet 22 were respectively With the horseshoe-shaped arrangement that is continuous with the second canopy hood 15 that has the second canopy hood 15, the second dried body 1 installed at the upper stage is reached again, and the same drying as described above is repeated.
最後の回転体 1を出たシ一ト状物質 3 5は、 サクシヨンフアブリックロール 8 のサクシヨン帯により上段側のフアブリック 3 6 Aに取られて回転体 1を離れ、 フード 1 7出口で排紙用シ一リングブランケット 4 1によりリードされ、 出口用 ファブリック 1 2との間に挟まれて進行し、 サクシヨンボックス 4 0によリシ一 ト状物質 3 5を上段のフアブリック 3 6 Aより取り、 上下のシ一リングピンチ口 —ル 3 8によリニップ圧をかけて空気の侵入を防止しながら乾燥フード出口より 外部に搬出する。 シート状物質 3 5が最後の回転体 1を離れる時、 上下段のェン ドレスフアブリック 3 6も離れて、 夫々上下段のフアブリックロール 1 0を周回 して、 再びフード 7の入口に戻り上記の乾燥サイクルを繰り返す。  The sheet-like substance 35 coming out of the last rotating body 1 is taken by the upper fabric 36 A by the suction belt of the suction fabric roll 8, leaves the rotating body 1, and is discharged at the hood 17 outlet. It is led by the paper sealing blanket 4 1, is sandwiched between the outlet fabric 12, and proceeds, and the liquid material 35 is removed from the upper fabric 36 A by the suction box 40. A nip pressure is applied to the upper and lower sealing pinch outlets 38 to prevent air intrusion and carry out the drying hood to the outside. When the sheet-like substance 3 5 leaves the last rotating body 1, the upper and lower endless fabrics 36 also leave, circling the upper and lower fabric rolls 10 respectively, and return to the entrance of the hood 7 again. Repeat the above drying cycle.
回転体 1上の略半円筒面状と其の延長上で略平面状とが連続した馬蹄形断面の 蒸発面で、 上下二枚のファブリック 3 6 (夫々内周外周と交互に上下で入れ替わ る） に挟まれたシート状物質 3 5は、 半円筒面上では外周より平面状では両面か ら、 1 5 0 °C以上の高速加熱ガスによる吹付けでシート状物質 3 5よリ蒸発した 水蒸気を含む 1 3 0 °C内外の排ガスは、 キヤノピーフード 1 5内及ぴスクェア一 フード 4 7内の吸込口 2 2と、サクションフアブリックロール 8を経て吸引され、 フード 1 7内の吸込函 2 3及び吸込ダク ト 2 4を経て排気スクリーン 3 3により 紙粉ミスト等の異物を除去してガス循環ブロワ一 2 5により昇圧すると共に、 そ の出口で排気ヒータ一 3 4により好ましくは 1 0 0 °C以上に加熱して、 その大部 分は給気ダク 卜 2 7を経て給気函連結ダク ト 2 1と 4 9から給気函 2 0と 4 8を 経て吹出口 1 9よリ上下 2枚のエンドレスフアブリック 3 6によリサンドィツチ 状に挟み込まれたシ一ト状物質 3 5に衝撃流で吹付け、 ェンドレスフアブリック 3 6中の空隙部に滞留している蒸発水蒸気を駆逐して、 直接シー卜状物質 3 5を 加熱すると共に、 シート状物質 3 5上の飽和水蒸気よリ成る境界層を乱して蒸発 を促進し好ましくは 1 0 0 °C内外の加熱ガス雰囲気とする。 猶全乾燥工程に亘リ ファブリック 3 6 Aと 3 6 Bに依り、 シート状物質 3 5をサンドィッチ状に挿ん で走行しても良い。 又出入口用ブランケッ卜 1 2、 給排紙用シーリングブランケ ット 3 9 , 4 1に代えて、 ファブリック 3 6 Aと 3 6 Bとに依リ給排紙しても良 く、 其の場合紙切れは皆無に成る。 Evaporation surface of horseshoe-shaped cross-section where the substantially semi-cylindrical surface on the rotating body 1 and the substantially flat surface on its extension are continuous. The sheet-like material 35 sandwiched between the) is vaporized from the sheet-like material 35 by spraying with a high-speed heating gas of 150 ° C or more from both sides in a plane from the outer periphery on the semi-cylindrical surface. The exhaust gas inside and outside of 130 ° C is sucked through the suction port 22 in the canopy hood 15 and the square hood 4 7 and the suction fabric roll 8, and the suction box in the hood 17 After removing foreign matter such as paper dust mist by the exhaust screen 33 through the suction duct 24 and the suction duct 24, the pressure is increased by the gas circulation blower 25, and at the outlet thereof, the exhaust heater 34 is preferably used. Heat above 0 ° C The air flows through the air supply duct 27 through the air supply box connecting ducts 21 and 49 through the air supply boxes 20 and 48 through the air outlet 19 and the upper and lower two endless fabrics 36 The sheet-like material 35 is sandwiched between the nozzles and blown by an impulse flow, and the vaporized steam remaining in the voids in the endless fabric 36 is expelled. At the same time as heating, the boundary layer made of saturated water vapor on the sheet material 35 is disturbed to promote evaporation, and preferably a heated gas atmosphere at around 100 ° C. is used. Depending on the refabrication 36 A and 36 B throughout the drying process, the sheet material 35 may be inserted in a sandwich and run. Alternatively, instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, fabrics 36A and 36B may be used instead of the paper supply / delivery. Is gone.
《第 4実施形態》  << 4th Embodiment >>
次に、 本発明のシート状物質の乾燥装置の第 4実施形態について図 1 3を参照 しながら説明する。 図 1 3は多筒式回転シリンダ 1を 1段式として設置する場合 の下向き配置の実施例を示す側面図である。 ここで、 以下の説明において、 前記 各実施形態と同一又は同等の構成部分についてはその説明を省略もしくは簡略す る。  Next, a fourth embodiment of the sheet-like substance drying apparatus of the present invention will be described with reference to FIG. FIG. 13 is a side view showing an embodiment of the downward arrangement when the multi-cylinder rotary cylinder 1 is installed as a single-stage type. Here, in the following description, the description of the same or equivalent components as those in the above embodiments will be omitted or simplified.
本実施形態にかかる乾燥装置 D S 4は、 複数の大径の回転体 1の数本ずつを 1 グループとし、 それぞれシー卜の出入口を上向きにしたグループと下向きにした グループと目的に応じて適宜に、 水平方向に配置した 1段構造となっている。 回 転体 （回転シリンダ） 1のそれぞれは、 回転軸 2及び回転体軸受 3によってドラ ィャ一フレーム 4に設置されている。 回転体 1のそれぞれには、 耐熱性のパネル により構成したキヤノピーフード 1 5が、 そのシリンダ軸 2の中心より下向きで は上部に、 上向きでは下部に設けられている。 キヤノビ一フ一ド 1 5は昇降装置 The drying device DS 4 according to the present embodiment includes a plurality of large-diameter rotating bodies 1 each in a group, and a group in which the entrance of the sheet is directed upward and a group in which the seat is directed downward. It has a one-stage structure arranged horizontally. Each of the rotating bodies (rotating cylinders) 1 is installed on a dry frame 4 by a rotating shaft 2 and a rotating body bearing 3. Each of the rotating bodies 1 is provided with a canopy hood 15 composed of a heat-resistant panel at an upper portion below the center of the cylinder shaft 2 and at a lower portion above the center. Canopy feed 1 5 is a lifting device
1 6を介してドライヤーフレーム 4に設置されており、 この昇降装置 1 6によつ て上下動可能になっている。 It is installed on the dryer frame 4 via 16, and can be moved up and down by this lifting device 16.
1本の回転体 1には、 該回転体 1と近接する位置にそれぞれ 2本の吸込みダク 卜 2 4と接続するサクシヨンフアブリックロール 8が下向き配置ではドライヤー フレーム 4下に設けられており、 上向き配置ではドライヤーフレーム 4上に設置 されている。 又好ましくはサクシヨンフアブリックロール 8の対向面に高温ガスの吹出口 1 9と排ガスの吸込口 2 2を有する給気函 2 0を設置する。 図 1 3にはシート状物 質が破断しても下に排紙し易いシート状物質の出入口を下向きにしたグループの み示す。 The one rotating body 1 is provided with a suction fabric roll 8 connected to two suction ducts 24 at a position close to the rotating body 1 and provided under the dryer frame 4 in a downward arrangement. In the upward arrangement, it is installed on the dryer frame 4. Preferably, an air supply box 20 having a hot gas outlet 19 and an exhaust gas inlet 22 is provided on the opposite surface of the suction fabric roll 8. Fig. 13 shows only the group with the entrance of the sheet material facing downward even if the sheet material breaks, which is easy to discharge below.
上段又は下段のキヤノビ一フード 1 5と ドライヤーフレーム 4の外周には、 そ れぞれ断熱性のパネルにより構成した密閉フード 1 7と点検掃除用のフード開閉 装置 1 8とを設置して、 シ一ト状物質 3 5の入口部 6 0及び出口部 6 1を除いて 全密閉とする。 その他の実施例と異る点は、 一段配置で下部には回転体 1が無い ので、 好ましくはファブリックロール 1 0により周回するシート状物質の給排紙 用のエンドレスファブリック 3 6 Bがあるのみである。 厚紙などで紙切れの恐れ のない時は下段のシート給排紙用ェンドレスファブリック 3 6 Bは省略出来る。 ワイヤ一パートで抄造されプレスパー卜で水分 6 0〜5 0 %に脱水された湿潤 状態のシート状物質 3 5は、 断熱性のパネルにより完全密閉されたフード 1 7の 入口部 6 0で入口用ブランケット 1 2によリリードされ、 上下のシーリングピン チロール 3 8によリ給紙用シーリングブランケット 3 9との間に挟まれて進行し、 スチームボックス 4 3とサクシヨンボックス 4 0間で急速に凝縮加熱され、 密閉 フード 1 7中で周回するサクシヨンフアブリックロール 8によリ下段よリ上って 来るファブリック 3 6 Bに取られて、 入口側に設置された回転体 1の入口に導か れる。 回転体 1の入口に導かれたシート状物質 3 5は、 上段より下りて来るファ プリック 3 6 Aとの間に挟まれてサクシヨンフアブリックロール 8により吸引さ れ、 回転体 1にその一方の面を密着させる。 シート状物質 3 5の他方の面は、 フ アブリックテンションロール 1 1を介して回転体 1に圧着され、 拘束下で乾燥さ れる。  On the outer periphery of the upper or lower canopy hood 15 and the dryer frame 4, a closed hood 17 composed of insulating panels and a hood opening and closing device 18 for inspection and cleaning are installed, respectively. Except for the inlet part 60 and outlet part 61 of the solid substance 35, it is completely sealed. The difference from the other embodiments is that since there is no rotating body 1 at the bottom in the single-stage arrangement, there is preferably only an endless fabric 36 B for feeding and discharging the sheet-like material orbiting by the fabric roll 10. is there. If there is no danger of running out of paper with thick paper, etc., the lower end sheet feeding and discharging endless fabric 36B can be omitted. The wet sheet-like material 35 made by one part of wire and dewatered by a press part to a water content of 60 to 50% is used for the entrance at the entrance 60 of the hood 17 which is completely sealed by a heat insulating panel. It is re-read by the blanket 1 2, and is moved between the sealing blanket 39 for re-feeding by the upper and lower sealing pinch rolls 3 8, and rapidly condensed between the steam box 4 3 and the suction box 40. It is heated and taken up by the fabric 36 coming up from the lower level by the suction rolls 8 rotating in the closed hood 17 and guided to the entrance of the rotating body 1 installed on the entrance side. . The sheet-like substance 35 guided to the inlet of the rotating body 1 is sandwiched between the fabric 36 A descending from the upper stage, is sucked by the suction fabric roll 8, and one of the two is rotated by the rotating body 1. Surface The other surface of the sheet material 35 is pressed against the rotating body 1 via the fabric tension roll 11 and dried under constraint.
1本目の回転体 1を通過したシ一ト状物質 3 5は、 回転体 1よリ離れ、 再び 2 本目のサクションフアブリックロール 8によリフアブリック 3 6 Aに取られて、 好ましくは下段の給排紙用ファブリック 3 6 Bとの間に挟まれて、 吹出口 1 9と 吸込口 2 2を有する給気函 2 0からの高温ガスによリ拘束下に乾燥を促進され、 2本目の回転体 1入口に到り、 給排紙用ファブリック 3 6 Bと別れて、 以下同様 の乾燥を繰り返し、 最後の回転体 1を出たシ一卜状物質 3 5は、 サクシヨンファ ブリック口一ル 8により取られてフード出口で、 排紙用シ一リングブランケット 4 1に乗り出口用ファブリック 1 2との間に挾まれて、 上下のシ一リングピンチ ロール 3 8によりシールされて乾燥フード 1 7出口より外部に搬出される。 その 他の作用は他の実施例と同様なので省略する。 猶全乾燥工程に亘リフアブリック 3 6 Aと 3 6 Bに依り、 シ一ト状物質 3 5をサンドイッチ状に挿んで走行しても 良い。 又出入口用ブランケット 1 2、 給排紙用シ一リングブランケット 3 9 , 4 1に代えて、 ファブリック 3 6 Aと 3 6 Bとに依り給排紙しても良く、 其の場合 紙切れは皆無に成る。 The sheet-like substance 35 passing through the first rotating body 1 is separated from the rotating body 1 and is taken up again by the second suction fabric roll 8 on the lift brick 36 A, preferably in the lower stage. Drying is promoted under the restraint of hot gas from the air supply box 20 having the outlet 19 and the inlet 22 between the discharge fabric 36B and the second rotation. After reaching the entrance of the rotating body 1 and separating from the paper feeding / discharging fabric 36 B, the same drying is repeated, and the sheet-like substance 35 exiting the last rotating body 1 is replaced with a suction fan. At the hood exit, taken by the brick opening 8, it is put between the discharge sealing blanket 4 1 and the exit fabric 12, and sealed by the upper and lower sealing pinch rolls 3 8 Drying hood 17 It is carried out from the outlet. The other operations are the same as those of the other embodiments, and will not be described. Depending on the lift bricks 36A and 36B throughout the drying process, the sheet-like substance 35 may be inserted in a sandwich and run. Also, instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, paper may be supplied / discharged by using fabrics 36A and 36B, in which case there is no paper breakage. Become.
図 2 2は前述した各實施例で使用される蒸気又は熱媒体や燃焼ガス等外部熱源 によるガス循環加熱系 J、 即ち循環ガス熱交換器 3 4を示す平面図、 図 2 3は図 2 2の側面図である。 図 2 2 , 図 2 3において、 吸込みダク ト 2 4より排気スク リーン 3 3を経たガスは、 ガス循環ブロワ一 2 5により 1 3 0 °C内外の循環加熱 ガスとして循環ガス熱交換器 3 4の熱膨張代を充分確保した低温側の外周部に供 給される。そして、ェコノマイザ一 5 2を有するガス又は重油燃焼等の外燃機と、 燃焼ガス循環ファン 5 1による燃焼室で、 高温側を固定した循環ガス熱交換器 3 4で、 循環ガスをそ Φ外周部に通過させて 1 0 0 °C以上に再加熱し、 給気ダク 卜 2 7を経て給気函 2 0に供給する。 燃焼室温度が高温なので間接熱交換器の熱膨 張代を充分見て、 循環加熱ガス側と燃焼ガス側とを隔離した構造とし、 燃焼ガス と循環加熱ガスとがリークして混合しない様にする o  FIG. 22 is a plan view showing a gas circulation heating system J using an external heat source such as steam or a heat medium or combustion gas used in each of the above-described embodiments, that is, a circulation gas heat exchanger 34, and FIG. FIG. In Figs. 22 and 23, the gas that has passed through the exhaust screen 33 from the suction duct 24 is used as a circulating gas heat exchanger 3 4 as a circulating heating gas inside and outside 130 ° C by a gas circulating blower 25. Supplied to the low-temperature side outer periphery where sufficient thermal expansion margin is secured. Then, the circulating gas is circulated to the outside by a circulating gas heat exchanger 34 having a fixed high-temperature side in a combustion chamber with a combustion gas circulating fan 51 and a gas or heavy oil combustion external combustion device having an economizer 52. And then reheated to 100 ° C or higher, and supplied to the air supply box 20 via the air supply duct 27. Since the temperature of the combustion chamber is high, the thermal expansion allowance of the indirect heat exchanger should be carefully considered, and the structure of the circulating heating gas side and the combustion gas side should be separated so that the combustion gas and the circulating heating gas do not leak and mix. O
. 《第 5実施形態》  《Fifth Embodiment》
次に、 本発明のシート状物質の乾燥装置の第 5実施形態について図 1 4を参照 しながら説明する。 図 1 4は第 5実施形態に係る乾燥装置 D S 5を側面から見た 図である。 以下の説明において、 前述した実施形態と同一又は同等の構成部分に ついてはその説明を省略もしくは簡略する。  Next, a fifth embodiment of the apparatus for drying a sheet material of the present invention will be described with reference to FIG. FIG. 14 is a diagram of a drying device DS5 according to the fifth embodiment as viewed from the side. In the following description, description of the same or equivalent components as those in the above-described embodiment will be omitted or simplified.
乾燥装置 D S 5は、 シート状物質 3 5の一方の面を支持しつつ回転する回転プ レート （回転体） 5 5と、 シー卜状物質 3 5の他方の面に接し、 該回転プレート 5 5との間でシ一ト状物質 3 5を挟みつつ回転プレー卜 5 5の周回に同期して移 動する通気性のファブリック 3 6と、 回転プレー卜 5 5の外周方向からフアブリ ック 3 6に向けて加熱ガスを吹き付ける吹出口 1 9と吸込口 2 2とを内蔵したキ ヤノピーフード 1 5を有する。 ファブリック 3 6は、 上段側の回転プレート 5 5 に支持されたシート状物質 3 5を挟むようにフード 1 7内部を周回するェンドレ ス構造の上段側ファブリック 3 6 Aと、 下段側の回転プレ一卜 5 5に支持された シ一卜状物質 3 5を挟むようにフード 1 7内部を周回するエンドレス構造の下段 側フアブリック 3 6 Bとを有している。 The drying device DS5 is in contact with a rotating plate (rotating body) 55 that rotates while supporting one surface of the sheet-like material 35, and contacts the other surface of the sheet-like material 35 with the rotating plate 55. The air-permeable fabric 36 moves in synchronism with the rotation of the rotating plate 55 while sandwiching the sheet-like substance 35 between itself and the fabric 36 from the outer circumferential direction of the rotating plate 55. With a built-in blow-out port 19 for blowing heated gas toward Has 15 canopy foods. The fabric 36 includes an upper fabric 36 A of an endless structure that circulates inside the hood 17 so as to sandwich the sheet-like substance 35 supported by the upper rotating plate 55, and a lower rotating plate 55. It has a lower fabric 36B of an endless structure that circulates inside the hood 17 so as to sandwich the sheet-like material 35 supported by the cabinet 55.
ェンドレスの回転プレート (帯状帯） 5 5は多数の回転プレートロール 5 6によ リ支持され、 上下 2段に円弧状に複数配置される。 回転プレートロール 5 6は回 転プレート 5 5の脱輪を防ぐ為好ましくは鍔付とし、 回転プレートロール軸と回 転プレート口一ル軸受により ドライヤーフレーム 4上に設置される。 回転プレー ト 5 5の蛇行を防ぐ為、 其の円弧状走行部の端末 (直行走行部)の回転プレー卜口 ' ール軸は、 回転プレート蛇行調整装置及び回転プレート張力調整装置を介し固定 される。 回転プレート 5 5の駆動は回転プレートロール 5 6によるか、 若しくは 其の外周を同期して周回するフアブリック 3 6をフアブリックロール 1 0を駆動 して行う。  The endless rotating plates (strips) 55 are supported by a number of rotating plate rolls 56, and are arranged in a plurality of arcs in two upper and lower stages. The rotating plate roll 56 is preferably provided with a flange to prevent the rotating plate 55 from coming off, and is mounted on the dryer frame 4 by a rotating plate roll shaft and a rotating plate opening bearing. In order to prevent the rotating plate 55 from meandering, the rotary plate shaft of the terminal of the arc-shaped running portion (the straight running portion) is fixed via a rotating plate meandering adjusting device and a rotating plate tension adjusting device. You. The rotating plate 55 is driven by the rotating plate roll 56 or by driving the fabric roll 10 to rotate the fabric 36 that circulates around its outer periphery in synchronization.
上段の回転プレート 5 5には、 該上段の回転プレー卜 5 5の中心よリ上部側に 配置された、 回転プレー卜 5 5との間で蒸発空間 8 0を形成するキヤノピーフー ド 1 5が夫々設けられている。 同様に、 下段の回転プレー卜 5 5には、 該下段の 回転プレー卜 5 5の中心よリ下部側に配置された回転プレート 5 5との間で蒸発 空間 8 0を形成するキヤノピーフード 1 5が夫々設けられている。 キヤノビーフ —ド 1 5は断熱性のパネルによリ構成され、吹出口 1 9と吸込口 2 2とを有する。 狭いフード 1 Ί中で衝撃範囲角を広げ同時に昇降性の改善と、 回転プレート 5 5との距離調節の容易化を考え、 キヤノピーフード 1 5を左右に数分割 （實施例 では二分割） して其の左右と中央で昇降装置 1 6によって独立して昇降可能とし た。 第 2実施形態では回転体が円筒型の回転体である為、 キヤノピーフードの形 状も円弧型に制約されたが、 第 5実施形態では回転プレー卜である為其の距離調 節は極めて容易となり、 左右の回転プレートロールの軸受を可動式とする事によ リ、 フードの上下昇降は極めて容易に成った。  Each of the upper rotating plates 55 has a canopy hood 15 disposed above the center of the upper rotating plate 55 to form an evaporation space 80 with the rotating plate 55. Is provided. Similarly, the lower rotating plate 55 has a canopy hood 1 which forms an evaporation space 80 with a rotating plate 55 arranged below the center of the lower rotating plate 55. 5 are provided respectively. The canopy bead 15 is composed of a heat insulating panel and has an outlet 19 and an inlet 22. The canopy hood 15 is divided into several parts on the left and right (in this example, two parts) in order to increase the range of impact within the narrow hood 1 Ί and simultaneously improve lifting and lowering and facilitate the adjustment of the distance to the rotating plate 55. The right and left and the center can be raised and lowered independently by the lifting device 16. In the second embodiment, since the rotating body is a cylindrical rotating body, the shape of the canopy hood is also limited to an arc shape, but in the fifth embodiment, since the rotating body is a rotating plate, the distance adjustment is extremely small. By making the bearings of the left and right rotating plate rolls movable, the vertical movement of the hood was extremely easy.
又シ一ト状物質 3 5の乾燥収縮を防止する為に、 ェンドレスのフアブリック 3 6により回転プレート 5 5に接触圧力を掛ける要がある。 ファブリックと回転体 間の接触圧力 p は、 p=2T/r で、 T=ファブリックテンション、 r=回転体の曲率 半径、 の関係があり、 水平な平面では乾燥収縮を防ぐ事は出来ない。 従って本発 明の如く必ず曲面体の上でファブリックによりテンションを掛け、 抄速と坪量に より mv2/r 実際のファブリックテンションが異なるので、 回転プレートロール 5 6の位置を変更して調節する事が出来る。 In addition, in order to prevent the sheet-like substance 35 from drying and shrinking, it is necessary to apply a contact pressure to the rotating plate 55 by the fabric 36 of the endless material. Fabric and rotating body The contact pressure p between is p = 2T / r, where T = fabric tension, r = curvature radius of the rotating body, and it cannot prevent drying shrinkage on a horizontal plane. Therefore, as in the present invention, the tension is always applied by the fabric on the curved body, and the actual fabric tension differs by mv 2 / r depending on the speed and basis weight, so adjust by changing the position of the rotating plate roll 56. Can do things.
以上説明したように、 キヤノビ一フード 1 5のそれぞれを任意のセクションに 分割構造とし、 この分割キヤノピーフード 1 5を昇降装置 1 6によって独立して 昇降可能とすることにより、 キヤノピーフード 1 5と回転プレート 5 5との間で 形成される蒸発空間 8 0の空間の大きさを任意に設定することができる。そして、 蒸発空間 8 0の空間の大きさを任意に設定することにより、 シート状物質 3 5に 対する乾燥条件を容易に変更することができるので、 シート状物質 3 5の品質と 省エネ性の向上を図ることができる。  As described above, each of the canopy hoods 15 is divided into arbitrary sections, and the divided canopy hoods 15 can be moved up and down independently by the lifting / lowering device 16, so that the canopy hoods 15 The size of the space of the evaporation space 80 formed between the rotating space 55 and the rotating plate 55 can be set arbitrarily. The drying conditions for the sheet material 35 can be easily changed by arbitrarily setting the size of the evaporation space 80, so that the quality and energy saving of the sheet material 35 are improved. Can be achieved.
前述したように、 回転プレート 5 5は複数設けられているとともに、 複数の回 転プレー卜 5 5のそれぞれは上下 2段に配置されている。 回転プレート 5 5の上 下間にはフアブリックロール 8 ' が設けられている。このフアブリックロール 8 ' はファブリック口一ル軸受 9によって回転可能に支持されている。 ここで、 サク シヨンフアブリックロール 8は、 夫々フード 1 7の出入リロにのみ各 1本配置さ れている。  As described above, a plurality of rotating plates 55 are provided, and each of the plurality of rotating plates 55 is arranged in two upper and lower stages. A fabric roll 8 ′ is provided between the upper and lower portions of the rotating plate 55. The fabric roll 8 ′ is rotatably supported by a fabric port bearing 9. Here, each of the sacrifice brick rolls 8 is arranged only at the entrance / exit relo of the hood 17 respectively.
上段又は下段のキヤノピーフード 1 5とドライヤーフレーム 4の外周には、 そ れぞれ断熱性のパネルによリ構成した密閉フード 1 7を設け、 シ一ト状物質 3 5 の入口部 6 0及ぴ出口部 6 1を除いて全密閉とする。 これら入口部 6 0及び出口 部 6 1のそれぞれには、 図 4 , 図 5を用いて説明した、 フード 1 フ外部と内部と のガスの移動を抑止するシール部 （シール機構） が設けられている。 点検掃除用 には、 相互に段差を着け面接触シールで完全密閉可能な、 電動か空圧駆動のフー ド開閉装置 1 8を設置する。  On the outer periphery of the upper and lower canopy hoods 15 and the dryer frame 4, closed hoods 17 each composed of heat insulating panels are provided, and the inlets 60 of sheet-like substances 35 are provided. Except for the inlet / outlet section 61, make it completely sealed. Each of the inlet section 60 and the outlet section 61 is provided with a seal section (seal mechanism) for suppressing gas transfer between the outside and the inside of the hood 1 described with reference to FIGS. I have. For inspection and cleaning, an electric or pneumatically driven hood opening / closing device 18 that can be completely sealed with a surface contact seal with a step between each other will be installed.
上段側回転プレート 5 5と下段側回転プレー卜 5 5との間には、 サクションフ アブリックボックス 5 0が設けられている。 このサクシヨンフアブリックボック ス 5 0は、 上段側回転プレート 5 5と下段側回転プレート 5 5との間で走行する シ一ト状物質 3 5が受け渡される位置を挟み其の表裏面に対向するように、 2つ ずつ設けられている。 A suction fabric box 50 is provided between the upper rotary plate 55 and the lower rotary plate 55. The suction box 50 is opposed to the front and back sides of a position where the sheet-like substance 35 traveling between the upper rotating plate 55 and the lower rotating plate 55 is transferred. Like two Are provided.
サクシヨンフアブリックボックス 5 0近傍には、三角箱型の吸込み函 4 8 'と、 この給気函 4 8 ' に接続した排気連結ダク ト 4 9 ' とが設けられている。 排気連 結ダク 卜 4 9 ' はフレキシブルジョイントを介して吸込みダク ト 2 4に接続して いる。  In the vicinity of the suction brick box 50, a triangular box-shaped suction box 48 'and an exhaust connection duct 49' connected to the air supply box 48 'are provided. The exhaust connection duct 49 'is connected to the suction duct 24 via a flexible joint.
乾燥装置 D S 5のガス循環加熱系 Jは、 図 1 0、 2 2、 2 3に示すように、 回 転プレート 5 5の駆動側に設けられ、 排気中のミストゃ紙粉等の異物を除去する 排気スクリーン 3 3、 燃焼ガスまたは熱媒体例えば水素ガス燃料と酸素とを使甩 する水素ガスタービンからの 3 5 0度以上の高温排ガス等を利用した循環ガス熱 交換器 3 4、 ガス循環ブロワ一 2 5、 断熱膨脹ノズル 2 6、 給気ダクト 2 7、 ガ ススクラバー （蒸気スクラバ一） 2 8、 ガスコンプレッサ （スチームコンプレツ サ） 2 9、 加圧蒸気管 3 0、 蒸気加減弁 3 1、 メークアップ蒸気管 3 2、 給気制 御ダンパー又は弁 3 7、 排気制御ダンパー又は弁 4 2とを備えておリ、 それぞれ 前述した吸込ダク ト 2 4及び給気函連結ダク ト 2 1と蒸気ヘッダ一 1 0 0とに接 続して加熱ガスを循環させる。  The gas circulation heating system J of the drying device DS5 is provided on the drive side of the rotating plate 55 as shown in Figs. 10, 22, and 23 to remove foreign matter such as mist and paper dust during exhaust. Exhaust screen 33, circulating gas heat exchanger 34, using a high temperature exhaust gas of 350 degrees or more from a hydrogen gas turbine using a combustion gas or a heat medium such as hydrogen gas fuel and oxygen, a gas circulation blower 25, adiabatic expansion nozzle 26, air supply duct 27, gas scrubber (steam scrubber) 28, gas compressor (steam compressor) 29, pressurized steam pipe 30, steam control valve 31 , Make-up steam pipe 32, air supply control damper or valve 37, exhaust control damper or valve 42, respectively, with the above-mentioned suction duct 24 and air supply box connection duct 21 respectively. The heating gas is circulated by connecting to the steam header 100.
本発明では全部の回転体 1やロール類は密閉フ一ド内に配置するが、 既設乾燥 部を利用する時に、 以下のシール方法を一部に採用する事も出来る。  In the present invention, all the rotating bodies 1 and the rolls are arranged in a closed hood. However, when the existing drying unit is used, the following sealing method may be partially adopted.
即ち、 回転プレートロール 5 6ゃサクシヨンファブリックロール 8が、 フード 1 7と接する面には、 （0 0 7 0 )に詳述した ラビリンス構造やフェルト面または ブラシ面等のシール機構を介して、 外部の空気がフード 1 7内に侵入したり、 内 部の蒸発水蒸気が多量に流出しないようにする。 That is, the rotating plate roll 56 and the suction fabric roll 8 are provided on the surface in contact with the hood 17 through a labyrinth structure or a sealing mechanism such as a felt surface or a brush surface described in detail in (2007). Prevent outside air from entering the hood 17 or a large amount of internal vaporized steam.
ワイヤーパー卜で抄造されプレスパ一卜で水分 5 0〜6 0 %に予備脱水された 湿潤状態のシート状物質 3 5は、 図 1 4に示すように、 入口部 6 0からフード 1 7内部に導入された後、 まず、 フード 1 7内部において周回する下段側のフアブ リック 3 6 Bにサクシヨンファブリックロール 8により吸着され、 下段側の回転 プレート 5 5に導かれる。 下段側の回転プレート 5 5に導かれたシ一ト状物質 3 5は、 回転プレート 5 5の外周面と下段側フアブリック 3 6 Bとの間に挟まれつ つ、 吹出口 1 9よリ加熱ガスを吹き付けられる。  As shown in Fig. 14, the wet sheet-like material 35, which was made with a wire part and preliminarily dehydrated to a water content of 50 to 60% with a press part, was placed inside the hood 17 from the inlet 60 as shown in Fig. 14. After being introduced, first, it is adsorbed by the suction fabric roll 8 to the lower fabric 36 B orbiting inside the hood 17, and is guided to the lower rotating plate 55. The sheet-like substance 35 guided to the lower rotary plate 55 is sandwiched between the outer peripheral surface of the rotary plate 55 and the lower fabric 36B, and the heated gas is discharged from the outlet 19. Is sprayed.
下段側の回転プレート 5 5に支持されつつ走行したシー卜状物質 3 5は、 やが て、 この下段側回転プレート 5 5の出口で下段側サクシヨンファブリックボック ス 5 0によリ下段側フアブリック 3 6 Bに吸引されて離れる。 次いで上段側のサ クションフアブリックボックス 5 0により上段側フアブリック 3 6 Aに吸引され て、 上段側の回転プレート 5 5に渡される。 上端側の回転プレート 5 5に渡され たシ一ト状物質 3 5は、 上段側回転プレー卜 5 5と上段側ファブリックベルト 3 6 Aとの間に挟まれつつ走行し、 前記と同様の乾燥処理を施される。 The sheet-like substance 3 5 traveling while being supported by the lower rotating plate 55 becomes At the outlet of the lower rotary plate 55, the lower suction fabric box 50 sucks the lower fabric 36 B and separates it. Then, the upper fabric 36 A is sucked by the upper suction fabric box 50 and transferred to the upper rotating plate 55. The sheet material 35 transferred to the upper rotating plate 55 travels while being sandwiched between the upper rotating plate 55 and the upper fabric belt 36 A, and the same drying as described above. Processed.
ここで、 吹出口 1 9からの加熱ガスの吹き付けによってシ一ト状物質 3 5より 蒸発した水蒸気を含む 1 3 0 °C内外のガスは、 キヤノビ一フード 1 5内 （蒸発空 間 8 0内) の吸込口 2 2と、 サクシヨンフアブリックボックス 5 0を介して吸弓 I される。吸引された排気ガスは、ガス循環加熱系 Jによって循環再加熱された後、 吹出口 1 9から再びフード 1 7内部に供給される。  Here, the gas at 130 ° C and outside, including the water vapor evaporated from the sheet-like substance 35 by spraying the heating gas from the blowout port 19, is discharged into the canopy hood 15 (in the evaporation space 80). ) Is sucked through the suction port 22 and the suction box 50. The sucked exhaust gas is circulated and reheated by the gas circulating heating system J, and then supplied from the outlet 19 to the inside of the hood 17 again.
第 2實施形態に比し第 5實施形態では、 回転プレート 5 5の位置を自由に設定 出来るので、 回転シリンダ一方式よリフアブリックによる自由収縮の拘束期間を よリ長く保持できる。 従ってサクシヨンフアブリックボックス 5 0は短く成り、 キヤノビ一フード 1 5と蒸発空間 8 0が長く設定可能である。 ガス流量にも依る が、 キヤノピーフードに連結する給気函連結ダク ト 2 1からの給気に無理があれ ば、 ポケッ ト部に専用の給気連結ダク 卜 4 9を設けても良い。  In the fifth embodiment, as compared with the second embodiment, the position of the rotary plate 55 can be set freely, so that the restriction period of the free contraction by the lift brick can be maintained longer than in the case of the rotary cylinder. Therefore, the suction brick box 50 becomes shorter, and the canopy hood 15 and the evaporation space 80 can be set longer. Although it depends on the gas flow rate, if it is not possible to supply air from the air supply box connection duct 21 connected to the canopy hood, a dedicated air supply connection duct 49 may be provided in the pocket portion.
以上説明したように、 上段に配置された回転プレート 5 5と下段に配置された 回転プレー卜 5 5との間に、 自由走行するシー卜状物質 3 5の夫々上部と下部の 回転プレート 5 5の外周側に、 ファブリック 3 6 Aと 3 6 Bとを介して、 フアブ リック 3 6と滑り枠で接触するサクシヨンフアブリックボックス 5 0を設け、 こ のサクシヨンフアブリックボックス 5 0によってシ一ト状物質 3 5の上下間での 受け渡しをすると共に、 走行するシート状物質 3 5から排気ガスを吸い込み循環 加熱系 Jに送り再加熱して循環使用する。 猶全乾燥工程に亘リフアブリック 3 6 Aと 3 6 Bに依り、シー卜状拗質 3 5をサンドイッチ状に挿んで走行しても良い。 又出入口用ブランケット 1 2、 給排紙用シーリングブランケット 3 9 , 4 1に代 えて、 ファブリック 3 6 Aと 3 6 Bとに依り給排紙しても良く、 其の場合紙切れ は皆無に成る。  As described above, the upper and lower rotating plates 55 of the free-running sheet material 35 are provided between the rotating plate 55 arranged in the upper stage and the rotating plate 55 arranged in the lower stage. At the outer peripheral side of the fabric, there is provided a suction fabric box 50 which comes into contact with the fabric 36 with a sliding frame via the fabrics 36 A and 36 B, and the suction fabric box 50 is used to form a screen. In addition to passing the material 35 up and down, exhaust gas is sucked from the traveling sheet material 35 and sent to the circulation heating system J for reheating and reuse. Depending on the lift bricks 36 A and 36 B throughout the drying process, the sheet-like material 35 may be inserted in a sandwich and run. Instead of the entrance / exit blanket 12 and the supply / discharge sealing blanket 39, 41, paper may be supplied / discharged by using fabrics 36A and 36B, in which case there is no paper breakage.
《第 6実施形態》 次に、 本発明のシート状物質の乾燥装置の第 6実施形態について図 1 5を参照 しながら説明する。 図 1 5は多筒式回転プレー卜 5 5を 1段式として設置する場 合の下向き配置の実施例を示す側面図である。 ここで、 以下の説明において、 前 述した各実施形態と同一又は同等の構成部分についてはその説明を省略もしくは 簡略する。 << Sixth Embodiment >> Next, a sixth embodiment of the apparatus for drying a sheet-like substance of the present invention will be described with reference to FIG. FIG. 15 is a side view showing an embodiment of the downward arrangement when the multi-cylinder rotary plate 55 is installed as a single-stage type. Here, in the following description, the description of the same or equivalent components as those in the above-described embodiments will be omitted or simplified.
本実施形態にかかる乾燥装置 D S 6は、 複数の大径の回転プレート 5 5を数本 ずつを 1グループとし、 それぞれシ一卜状物質の出入口を上向きにしたグループ と下向きにしたグループと目的に応じて適宜に、 水平方向に配置した 1段構造と なっている。 ェンドレスの回転プレート 5 5は多数の回転ロール 5 6によリ支持 され、 一段に円弧状に複数配置される。 回転プレートロール 5 6は好ましくは鍔 付とし、 回転プレートロール軸と回転プレートロール軸受により ドライヤーフレ —ム 4上に設置される。 回転プレート 5 5の蛇行を防ぐ為、 其の円弧状走行部の 端末の回転プレートロール軸 5 8は、 回転プレート蛇行調整装置及び張力調整装 置を介し固定される。  The drying device DS 6 according to the present embodiment includes a plurality of large-diameter rotating plates 55 in groups of several, each having a group in which the entrance and exit of the sheet-like substance are directed upward and a group directed downward. It has a one-stage structure that is arranged in the horizontal direction as appropriate. The endless rotating plate 55 is supported by a number of rotating rolls 56, and a plurality of rotating plates are arranged in an arc at one stage. The rotating plate roll 56 is preferably provided with a flange, and is set on the dryer frame 4 by a rotating plate roll shaft and a rotating plate roll bearing. In order to prevent the rotating plate 55 from meandering, the rotating plate roll shaft 58 at the end of the arc-shaped traveling portion is fixed via a rotating plate meandering adjusting device and a tension adjusting device.
回転プレート 5 5のそれぞれには、 回転プレー卜 5 5との間で蒸発空間 8 0を 形成するキヤノピーフード 1 5がその回転プレートロール軸の中心より、 下向き では上部に、 上向きでは下部に、 昇降装置 1 6を介して上下動可能にドライヤー フレーム 4上に設置されている。 キヤノピーフード 1 5は断熱性のパネルにより 構成され、 吹出口 1 9と吸込口 2 2とを有する。  In each of the rotating plates 55, a canopy hood 15 which forms an evaporation space 80 with the rotating plate 55 is located above the center of the rotating plate roll axis, downward at the top, upward at the bottom, It is installed on the dryer frame 4 so as to be able to move up and down via a lifting device 16. The canopy hood 15 is composed of a heat insulating panel and has an outlet 19 and an inlet 22.
1組の回転プレート 5 5には、 該回転プレート 5 5間の近接する位置に、 それ ぞれ 2本の、 吸込みダク ト 2 4と接続するサクシヨンファブリックロール 8が、 下向き配置ではドライヤーフレーム 4下に設けられており、 上向き配置ではドラ ィャ一フレーム 4上に設置されている。  One set of rotating plates 55 has two suction fabric rolls 8 connected to the suction ducts 24 at positions adjacent to the rotating plates 55, respectively. It is provided below, and is installed on the dryer frame 4 in the upward arrangement.
又好ましくはサクシヨンフアブリックロール 8の対向面に高温ガスの吹出口 1 9と排ガスの吸込口 2 2を有する給気函 2 0を設置する。 図 1 5にはシート状物 質が破断しても下に排紙し易いシート状物質の出入口を下向きにしたグループの み示す。  Preferably, an air supply box 20 having a hot gas outlet 19 and an exhaust gas inlet 22 is provided on the opposite surface of the suction fabric roll 8. Fig. 15 shows only the group with the entrance of the sheet material facing downward even if the sheet material breaks, which is easy to discharge below.
上段又は下段のキヤノピーフード 1 5と ドライヤーフレーム 4の外周には、 そ れぞれ断熱性のパネルにより構成した密閉フード 1 7を設け、 シ一ト状物質 3 5 の入口部 6 0及び出口部 6 1を除いて全密閉とする。 点検掃除用には、 相互に段 差を着け面接触シールで完全密閉可能な、 電動か空圧駆動のフード開閉装置 1 8 とを設置する。 その他の実施例と異る点は、 一段配置で下部には回転プレート 5 5が無いので、 好ましくはファブリックロール 1 0により周回するシートの給排 紙用のェンドレスフアブリック 3 6があるのみである。 厚紙などで紙切れの恐れ のない時は下段のシート給排紙用ェンドレスフアブリック 3 6は省略出来る。 ワイヤ一パー卜で抄造されプレスパー卜で水分 6 0〜5 0 %に脱水された脱水 湿潤状態のシー卜状物質 3 5は、 断熱性のパネルにより完全密閉されたフ一ド 1 7の入口部 6 0で入口用ブランケット 1 2によリリードされ、 上下のシ一リング ピンチロール 3 8によリ給紙用シーリングブランケッ卜 3 9との間に挟まれて進 行し、スチームポックス 4 3とサクシヨンボックス 4 0間で急速に凝縮加熱され、 密閉フード 1 1中で周回するサクシヨンフアブリックロール 8によリ下段よリ上 つて来る給排紙用フアブリック 3 6 Bに取られて、 入口側に設置された回転プレ —ト 5 5の入口に導かれる。 回転プレー卜 5 5の入口に導かれたシート状物質 3 5は、 上段よリ下りて来るフアブリック 3 6 Aとの間に挟まれてサクシヨンファ プリックロール 8により吸引され、 回転プレート 5 5にその一方の面を密着させ る。 シート状物質 3 5の他方の面はファブリックテンションロール 1 1を介して 回転プレート 5 5に圧着され、 拘束下で乾燥される。 On the outer periphery of the upper and lower canopy hoods 15 and the dryer frame 4, there are provided closed hoods 17 each composed of heat insulating panels, and sheet-like substances 3 5 Except for the inlet part 60 and outlet part 61, it is completely sealed. For inspection and cleaning, an electric or pneumatically driven hood opening / closing device 18 that can be completely sealed with a surface contact seal with a step between each other will be installed. The difference from the other embodiments is that, since there is no rotating plate 55 at the bottom in the single-stage arrangement, preferably there is only an endless fabric 36 for feeding and discharging sheets that are circulated by the fabric roll 10. It is. When there is no danger of running out of paper with thick paper, etc., the end sheet fabric 36 for sheet feeding and discharging at the bottom can be omitted. The dehydrated, wet sheet-like material 35 made by a wire part and dewatered to a water content of 60 to 50% by a press part is an inlet of a hood 17 that is completely sealed by a heat insulating panel. At 60, it was re-read by the entrance blanket 1 2, and was moved between the upper and lower sealing pinch rolls 3 8, sandwiched between the re-feeding sealing blanket 39 and steam pox 43. The paper is rapidly condensed and heated between the box 40 and is closed by the suction fabric roll 8 circling in the closed hood 1 1. It is led to the entrance of the rotating plate 55 installed in the building. The sheet-like substance 35 guided to the entrance of the rotating plate 55 is sucked by the suction fabric roll 8 between the fabric 36 A coming down from the upper stage, and the sheet material 35 is transferred to the rotating plate 55. Adhere one side closely. The other surface of the sheet material 35 is pressed against the rotating plate 55 via the fabric tension roll 11 and dried under constraint.
1本目の回転プレート 5 5を通過したシ一ト状物質 3 5は、 回転プレー卜 5 5 より離れファブリック 3 6 Aに取られて、 好ましくは下段の給排紙用ファブリッ ク 3 6 Bとの間に挟まれて、 吹出口 1 9と吸込口 2 2を有する給気函 2 0からの 高温ガスによリ拘束下に乾燥を促進され、 2本目の回転プレー卜 5 5入口に到リ、 給棑紙用ファブリック 3 6 Bと別れて、 以下同様の乾燥を繰り返し、 最後の回転 プレート 5 5を出たシー卜状物質 3 5は、 サクシヨンフアプリックロール 8によ リ取られてフード 1 7出口で、 排紙用シ一リングブランケット 4 1に乗り出口用 ファブリック 1 2との間に挾まれて、 上下のシ一リングピンチロール 3 8により シールされて乾燥フード 1 7出口より外部に搬出される。 その他の作用は他の実 施例と同様なので省略する。 猶全乾燥工程に亘リフアブリック 3 6 Aと 3 6 Bに 依り、 シート状物質 3 5をサンドイッチ状に挿んで走行しても良い。 又出入口用 ブランケット 1 2、 給排紙用シーリングブランケット 3 9 , 4 1に代えて、 ファ ブリック 3 6 Aと 3 6 Bとに依り給排紙しても良く、 其の場合紙切れは皆無に成 る。 The sheet-like substance 35 passing through the first rotating plate 55 is separated from the rotating plate 55 and taken up by the fabric 36A, and is preferably connected to the lower feeding / discharging fabric 36B. Drying is accelerated by the high-temperature gas from the air supply box 20 having the outlet 19 and the suction port 22, and the drying is promoted under the constraint, and reaches the inlet of the second rotary plate 55. Separated from the feeder fabric 36B, the same drying was repeated, and the sheet-like substance 35 coming out of the last rotating plate 55 was removed by the suction roll 8 and the hood 1 was removed. At the exit 7, get on the sheet-discharge sealing blanket 4 1 and sandwich it between the exit-use fabric 12 and seal it with the upper and lower sealing pinch rolls 38. Is done. The other operations are the same as those of the other embodiments, and will not be described. Depending on the lift bricks 36A and 36B throughout the drying process, the sheet-like substance 35 may be inserted in a sandwich and run. Also for entrance Instead of the blanket 12 and the supply / discharge ceiling blanket 39, 41, paper may be supplied / discharged by fabrics 36A and 36B, in which case there will be no paper breakage.
《第 7実施形態》  << Seventh Embodiment >>
次に、 本発明のシート状物質の製造装置の第フ実施形態について図 1 6、 図 1 7を参照しながら説明する。 図 1 6は回転体 （回転シリンダ） 1を 2段式として 設置した場合の実施例を示す側面図、図 1 7は図 1 6の側断面図である。ここで、 以下の説明において、 上述した各実施形態と同一又は同等の構成部分については その説明を簡略もしくは省略する。  Next, a fifth embodiment of the apparatus for producing a sheet-like substance according to the present invention will be described with reference to FIGS. FIG. 16 is a side view showing an embodiment in which the rotating body (rotating cylinder) 1 is installed as a two-stage type, and FIG. 17 is a side sectional view of FIG. Here, in the following description, the description of the same or equivalent components as those of the above-described embodiments will be simplified or omitted.
図 1 6、 図 1 フに示すように、 乾燥装置 D S 7は、 上下 2段に設置された複数 の回転体 1を備えている。 抄紙機棟建屋の独立した機械基礎上にアンカーボルト により固定したソールプレート 1 4にドライヤーフレーム 4を組み上げ、 必要数 の回転体 1を回転軸 2及び回転体軸受 3によリそれぞれ設置する。 多筒式回転体 を設置する時は、 本実施例に示す如く上下 2段にそれぞれ千鳥型に配置するのが 工場スペースを有効に利用する上で有利である。 特に本實施例は既設抄紙機を其 の侮利用して改造した事例で、 狭い空間に配置した実施例である。  As shown in FIG. 16 and FIG. 1F, the drying device DS7 includes a plurality of rotating bodies 1 installed in upper and lower two stages. Assemble the dryer frame 4 on the sole plate 14 fixed with anchor bolts on the independent machine foundation of the paper machine building, and install the required number of rotating bodies 1 with the rotating shaft 2 and rotating body bearings 3 respectively. When installing a multi-cylinder type rotating body, it is advantageous to arrange the upper and lower two stages in a zigzag pattern as shown in this embodiment in order to effectively use the factory space. In particular, the present embodiment is an example in which an existing paper machine is remodeled by utilizing the same, and is arranged in a narrow space.
上段の回転体 1にはその回転軸 2の中心よリ上部に、 下段の回転体 1には回転 軸 2の中心より下部に、 夫々キヤノピーフード 1 5を昇降装置 1 6を介して上下 動可能にドライヤーフレーム 4上に設置する。 各回転体 1の上下間には、 キヤノ ビーフ一ド 1 5の延長上にェンドレス構造のフアブリック 3 6 A及び 3 6 Bによ リシ一卜状物質 3 5を挟む方式である。 そして、 ファブリック 3 6 A及ぴ 3 6 B は入口部 6 0及ぴ出口部 6 1を介してフ一ド 1 7の内部と外部とにわたつて周回 するように設けられている。 又フード 1 7の出入リロにはそれぞれ複数のフアブ リックロール 1 0をフアプリックロ一ル軸受 9により、 シール部フレーム 9 2に 設置し、 図 4や図 5を用いて説明したように、 夫々フード 1 7のシート通過用フ ―ド出入り口中央スリツト 9 5、 フアブリック又はブランケット逼過用フード出 入口上スリッ ト 9 6、 とフアブリック又はブランケッ卜通過用フ一ド出入口下ス リット 9 7を経て、 サンドウイツチ構造でエンドレスフアブリック 3 6 A及ぴ 3 6 Bを夫々周回させる。 猶フード出入り口でのシール方法は、 シーリングピンチロール 3 8や、 スチー ムボックス 4 3とサクシヨンボックス 4 0と、 ピンチロールシール装置 4 4、 シ —リングフレーム 4 5、 ブラッシシール 4 6を使用する物で既に詳述済みで省略 する。 要するに給排紙用のシーリングブランケット 3 9と 4 0、 及び出入口用フ アブリック 1 2を止め、 エンドレスファブリック 3 6 A及び 3 6 Bを活用した方 式である。 本式に依りフード中での紙切れは、 薄紙厚紙共に皆無と成った。 The canopy hood 15 moves up and down via the lifting device 16 on the upper rotating body 1 above the center of the rotating shaft 2 and on the lower rotating body 1 below the center of the rotating shaft 2. Install on dryer frame 4 if possible. Between the upper and lower sides of each rotating body 1, a liquid material 35 is sandwiched between fabrics 36A and 36B having an endless structure on the extension of the cano bead 15. The fabrics 36A and 36B are provided so as to orbit the inside and outside of the hood 17 via the inlet 60 and the outlet 61. In addition, a plurality of fabric rolls 10 are installed on the seal section frame 92 by a spring roll bearing 9 at the entrance and exit re-rolls of the hood 17, respectively, and as described with reference to FIG. 4 and FIG. The central slit 95 of the sheet entrance and exit of the sheet 95, the upper slit 96 of the hood entrance for fabric or blanket tightness, and the lower slit 97 of the entrance and exit for the fabric or blanket through the sandwich 977 To rotate the endless fabrics 36 A and 36 B respectively. Use a sealing pinch roll 38, a steam box 43 and a suction box 40, a pinch roll sealing device 44, a sealing frame 45, and a brush seal 46 to seal at the entrance of the hood. It has already been described in detail in the article and will be omitted. In short, this is a method that stops sealing blankets 39 and 40 for paper supply and discharge, and fabrics 12 for entrance and exit, and uses endless fabrics 36A and 36B. According to this formula, there was no paper breakage in the hood for both thin and thick paper.
図 1 6に示すフードの入口の配置は、 厚紙やオン含浸等での層間薄利の防止上 極力湿潤シート状物質 3 5を折り曲げない様に、 傾斜配置であるが是に拘束され る訳では無く、 水平でも逆傾斜でも自由に配置可能である。  The arrangement of the entrance of the hood shown in Fig. 16 is an inclined arrangement to prevent bending of the wet sheet-like material 35 as much as possible in order to prevent interlayer thinning due to cardboard or impregnation, but it is not necessarily restricted. , It can be freely arranged in horizontal or reverse inclination.
又前述したが紙通しに際し、 シート通過用フード出入リロ中央スリット 9 5幅 を更に広げたい場合は、下側設置のシール装置一式を上下昇降方式としても良い。 上段及ぴ下段のキヤノピーフード 1 5やドライャ一フレーム 4を含む乾燥パー 卜全体の外周には、 断熱性のパネルにより構成したフード 1 7と、 点検掃除用の フード開閉装置 1 8とを設置して、 シート状物質 3 5の出入口を除いて全密閉と する。  As described above, when it is desired to further widen the width of the central slit 95 of the sheet passage hood in and out of the sheet passing hood, a set of sealing devices installed on the lower side may be of a vertically moving type. On the outer periphery of the entire drying part, including the upper and lower canopy hoods 15 and the dryer frame 4, a hood 17 composed of heat insulating panels and a hood opening and closing device 18 for inspection and cleaning are installed. Then, it is completely sealed except for the entrance and exit of the sheet material 35.
ワイヤーパートで抄造されプレスパー卜で水分 6 0〜5 0 %に脱水された湿潤 状態のシート状物質 3 5は、 断熱性のパネルにより完全密閉されたフード 1 7入 口部で、 サンドウイッチ構造で配置されたェンドレスフアブリック 3 6 A及び B に揷まれてリードされ、 上下のシ一リングピンチロール 3 8により挟まれて進行 し、 スチームボックス 4 3とサクシヨンボックス 4 0間で急速に凝縮加熱され、 密閉フード 1 7中で周回するファブリックロール 1 0により、 下段入口側に設置 された回転体 1入口に到る。 次に吹出口 1 9と吸込口 2 2を有する最初のキヤノ ピ一フ一ド 1 5内を回転体 1に沿って周回し、 シー卜状物質の上下面は上下のフ アブリック 3 6により挟まれながら、 ファブリックテンションロール 1 1を介し て回転体 1面に強力に圧着されて拘束下に乾燥される。  The wet sheet-like material 35 made by the wire part and dehydrated to 60 to 50% moisture by the press part is a sandwich structure at the entrance of the hood 17 that is completely sealed by a heat insulating panel. The lead is sandwiched between the placed endless fabrics 36 A and B, and is sandwiched between the upper and lower sealing pinch rolls 38, and rapidly moves between the steam box 43 and the suction box 40. The fabric rolls 10 that are condensed and heated and circulate in the closed hood 17 reach the rotating body 1 inlet provided on the lower inlet side. Next, it circulates along the rotating body 1 in the first canopy 15 having the outlet 19 and the inlet 22, and the upper and lower surfaces of the sheet-like material are sandwiched between the upper and lower fabrics 36. While rotating, it is strongly pressed to the rotating body 1 surface via the fabric tension roll 11 and dried under constraint.
1本目の回転体 1を逼過したシー卜状物質 3 5は、 其の ί尽両ファブリック 3 6 に挟まれながら、 ほぼ平面よりなる自由蒸発面で、 夫々高速高温ガス雰囲気下で 上下 2枚のエンドレスファブリック 3 6 Α、 3 6 Β間で更に乾燥され、 次に吹出 口 1 9と吸込口 2 2を有する第二のキヤノビ一フード 1 5と連続した馬蹄形配置 で、 再び上段に設置された 2本目の回転体 1入口に到り、 前記と同様の乾燥が繰 り返される。 The sheet-like substance 3 5 that tightened the first rotating body 1 is a free evaporation surface consisting of almost flat surfaces while being sandwiched between the exhausted fabrics 36, and each of the upper and lower sheets under high-speed high-temperature gas atmosphere. The endless fabric is dried further between 36 Α, 36 Β and then has a horseshoe-shaped arrangement with a second canopy hood 15 with outlet 19 and inlet 22 Then, it reaches the inlet of the second rotating body 1 installed in the upper stage again, and the same drying as described above is repeated.
最後の回転体 1を出たシート状物質 3 5は、 ファブリックロール 1 0により上 下段のファブリック 3 6 A及び 3 6 Bに揷まれた ί尽回転体 1を離れ、 フード 1 7 出口部を経てリードされ、 上下段のフアブリック 3 6 Αと 3 6 Bとの間に挟まれ て進行する。 次いでサクシヨンボックス 4 0とスチームボックス 4 3によりシー ト状物質 3 5をスチームカーテンでシールしながら、 上下のシ一リングピンチ口 —ル 3 8によリニップ圧をかけて空気の侵入を防止しながら乾燥フード 1 7出口 部より外部に搬出する。 猶サクシヨンボックス 4 0とスチームボックス 4 3によ リシ一卜状物質 3 5をスチームカーテンでシールする方法は出口では省略しても 良い。  The sheet material 35 coming out of the last rotator 1 leaves the exhaust rotator 1 contained in the upper and lower fabrics 36 A and 36 B by the fabric roll 10, and passes through the outlet of the hood 17. It is led and is sandwiched between the upper and lower fabrics 36Α and 36B. Next, while sealing the sheet-like substance 35 with a steam curtain using the suction box 40 and the steam box 43, a nip pressure is applied by the upper and lower sealing pinch holes 38 to prevent air from entering. While drying, take it out of the outlet of the drying hood 17. The method of sealing the liquid substance 35 with the steam curtain by the grace suction box 40 and the steam box 43 may be omitted at the exit.
シート状物質 3 5が最後の回転体 1を離れる時、 上下段のエンドレスフアブリ ック 3 6 A及び 3 6 Bも離れて、 夫々上下段のフアブリックロール 1 0を周回し て、 再びフード 1 7の入口外部に戻り上記の乾燥サイクルを繰り返す。  When the sheet-like substance 35 leaves the last rotating body 1, the upper and lower endless fabrics 36A and 36B also leave, and go around the upper and lower fabric rolls 10, respectively, and again hood 17 Return to the outside of the inlet at 7 and repeat the above drying cycle.
回転体 1上の略半円筒面状と其の延長上で略平面状とが連続した馬蹄形断面の 蒸発面で、 上下二枚の通気性耐熱ファブリック 3 6 A及び 3 6 B (夫々内周外周 と交互に上下で入れ替わる) に挟まれたシート状物質 3 5は、 外周より (平面状 では両面から）、 1 0 0 °C以上の高速加熱ガスが吹付けられる。シ一ト状物質 3 5 より蒸発した水蒸気を含む 2 0 °C内外減温した排ガスは、 キヤノビ一フード 1 5 内の吸込口 2 2を経て吸引され、 フード 1 7の傾斜した天井部に設けられた排気 ガス中異物除去用耐熱フィルタとしての排気フィルタ 3 3を経て紙粉ミス卜等の 異物を除去して、吸込みダク ト 2 4を経てガス循環ブロワ一 2 5により昇圧され、 その出口で排気ヒータ （熱交換器） 3 4により好ましくは 1 0 0 °C以上に加熱さ れる。 その大部分は給気ダク ト 2 7を経て給気函連結ダク 卜 2 1より、 個々の回 転体 1のキャップ入口ダンパー 8 7を経てキヤノビ一フード 1 5に到る。 給気函 2 0の吹出口 1 9より、 上下 2枚のェンドレスフアブリック 3 6 A及び 3 6 Bに よりサンドィツチ状に挟み込まれたシー卜状物質 3 5に衝撃流で吹付け、 ェンド レスフアブリック 3 6中の空隙部に滞留している蒸発水蒸気を駆逐して、 直接シ ート状物質 3 5を加熱すると共に、 シート状物質 3 5上の飽和水蒸気より成る境 界層を乱して蒸発を促進し好ましくは 1 0 0 °C内外の加熱ガス雰囲気どする。 《全面接合箱体の実施形態》 The upper and lower two breathable heat-resistant fabrics 36 A and 36 B (the inner and outer circumferences, respectively) are horseshoe-shaped cross-section evaporation surfaces in which a substantially semi-cylindrical surface shape on the rotating body 1 and a substantially flat shape on its extension are continuous. The high-speed heating gas of 100 ° C or more is sprayed from the outer circumference (from both sides in a planar shape) of the sheet-like substance 35 sandwiched between the sheets (alternating with the upper and lower sides alternately). Exhaust gas at 20 ° C or lower, including water vapor evaporated from the sheet-like substance 35, is sucked through the suction port 22 in the canopy hood 15 and installed on the inclined ceiling of the hood 17. was to remove foreign matter as paper dust miss Bok like through an exhaust filter 3 3 as an exhaust gas heat filter foreign matter removing, is pressurized by the gas circulation blower one 2 5 through the duct 2 4 suction, at its outlet It is preferably heated to 100 ° C. or more by an exhaust heater (heat exchanger) 34. Most of the air flows from the air supply duct 27 through the air supply duct 27 to the canopy hood 15 through the cap inlet dampers 87 of the individual rotating bodies 1. From the outlet 19 of the air supply box 20, the sheet-like material 35 sandwiched between the two upper and lower endless fabrics 36 A and 36 B is impulsively blown to the sheet-like material 35, The vaporized steam remaining in the voids in the resin brick 36 is expelled to directly heat the sheet-like substance 35, and the boundary formed by the saturated vapor on the sheet-like substance 35. The boundary layer is disturbed to promote evaporation, and preferably a heating gas atmosphere at 100 ° C. or outside is used. << Embodiment of full-body box >>
次に、 本発明のシート状物質の全面接合箱体の実施形態について図 1 8、 図 1 9、 図 2 0、 図 2 1を参照しながら説明する。 図 1 8は第七實施形態の室内配置 例を、 建屋を操作側で切断して示した事例である。 図 1 9は同じく第七實施形態 の室内配置例を、 建屋をフード 1 7のシート出口で切断して示した事例である。 図 2 0は第七實施形態での、 密閉フード 1 7の中央抄紙機幅方向の断面詳細を示 した事例である。 図 2 1は同じく第七實施形態での、 屋上配置を示した事例であ る。  Next, an embodiment of the sheet-like material fully bonded box of the present invention will be described with reference to FIGS. 18, FIG. 19, FIG. 20 and FIG. Figure 18 shows an example of the indoor layout of the seventh embodiment, with the building cut away on the operation side. FIG. 19 shows an example of the indoor layout of the seventh embodiment, in which the building is cut at the seat exit of the hood 17. FIG. 20 is an example showing the cross-sectional details of the closed hood 17 in the width direction of the central paper machine in the seventh embodiment. Fig. 21 shows an example of roof layout in the seventh embodiment.
従来公知のフード開閉装置は、 シール方法にルーズな構造で、 ロープによる空 隙部を介する上下昇降式で、抄紙機の床面との接触部はスポンジ状の搆造である。 従つてそれら摺動部から多量のガスの漏洩や、 外部から多量の空気の漏れ込みが 有る。  Conventionally known hood opening / closing devices have a structure that is loose in the sealing method, are of a vertical up-and-down type through gaps formed by ropes, and a contact portion with the floor of the paper machine is a sponge-like structure. Therefore, a large amount of gas leaks from these sliding parts and a large amount of air leaks from outside.
本発明による全面接合により密閉構造としたフード 1 7の開閉装置 1 8とは、 其の構造が根本的に異なる。 本発明に係る開閉装置には、 図 2や図 9の符号 1 8 に示すように、 開閉戸の正面周辺部と、 裏面周辺部の全面には内側に折り曲げた 圧着装置 1 8 Aが有る。 又フード 1 7の内壁側には開閉戸の周辺部に前記圧着装 置に対応した、 相互に二段の段差を着け接触面とシール用のシリコンスポンジ製 耐熱パッキンを介して圧着可能とした、 手動駆動のフード開閉装置がある。 又開 閉戸の正面には図示していない、 開閉戸を内側に圧着して締付ける、 開閉用の力 ムシャフトとハンドルが有る。 図 1 8正面左よリーつ目及び三つ目の開閉装置 1 8は二枚の両開き戸で、 他は一枚の片開き戸である。 何れも運転中はロックされ 火傷防止と共に、 フード内部からのガス漏れは勿論、 外部からの空気の流入も皆 無である。  The structure is fundamentally different from the opening and closing device 18 of the hood 17 having a closed structure by full-surface joining according to the present invention. The opening and closing device according to the present invention includes a crimping device 18A that is bent inward on the entire surface of the front peripheral portion and the rear surface peripheral portion of the opening / closing door as shown by reference numeral 18 in FIGS. The inner wall side of the hood 17 is provided with two steps in the periphery of the opening / closing door on the periphery of the opening / closing door, and can be crimped through a heat-resistant packing made of silicone sponge for contact and sealing with the contact surface. There is a manually driven hood opening and closing device. There is also an opening / closing force shaft and handle (not shown) on the front side of the door, which are not shown in the figure and which are pressed inside and tightened. Fig. 18 The third and third opening / closing devices from the front left 18 are two double doors, and the other is a single door. Both are locked during operation, preventing burns, and there is no gas leakage from the inside of the hood and no air from outside.
来公知のフードはシール方法にルーズな構造で、 フード内外壁の材質は通常ァ ルミの薄板で、 各コーナー及び壁間の接続部には夫々アルミの押出し成型材を中 空の柱状とし、 壁材との接続用に夫々嵌め込み継ぎ手を使用する。 内外壁は硝子 クロス等の断熱材を挟み、 接続部の端末は曲げ接合して、 其の両端末を前記嵌め 込み継ぎ手に手で押込み現地組立を行う。 嵌合部間空隙部のシールにはシーリン グ剤を手で塗るが、 時間と共に剥離する。 又多数のシートの通過用の全幅で大型 の開口や、 ロープと、 駆動軸や配管、 ダク トのための開口が多数在り密閉は不可 能であった。 従ってそれら摺動部から多量のガスの漏洩や、 外部から多量の空気 の漏れ込みが有る。 Conventionally known hoods have a loose structure for the sealing method. The inner and outer walls of the hood are usually made of thin aluminum sheets, and each corner and the connection between the walls are made of extruded aluminum material in the form of hollow pillars. Fitting fittings are used for connection with the material. The inner and outer walls are sandwiched by a heat insulating material such as glass cloth, and the ends of the connection are bent and joined, and both ends are manually pushed into the fittings to perform on-site assembly. Sealing is used to seal the gap between the mating parts. Applying agent by hand, peels off over time. Also, there were many wide openings with large widths for passing many sheets, and many openings for ropes, drive shafts, pipes, and ducts, and sealing was impossible. Therefore, a large amount of gas leaks from these sliding parts and a large amount of air leaks from the outside.
本発明による全面接合により密閉構造としたフード 1 7は、 従来公知のフード とは其の構造が根本的に異なる。 フード 1 7の開口部は、 回転式シール装置を設 けたシート出入リロと、 夫々シール用多翼ダンパー 4 2、 3 7、 8 8を設けた排 気ダク 卜 9 0と、 吸気口 9 1と、 非常用大気開放ダク 卜 8 9のみで、 其の他は完 全に密閉されて居る。  The hood 17 having a hermetically sealed structure by full-surface joining according to the present invention is fundamentally different from a conventionally known hood. The opening of the hood 17 is provided with a sheet access relo provided with a rotary seal device, an exhaust duct 90 provided with multi-blade dampers 42, 37, 88 for sealing, and an intake port 91, respectively. However, only emergency air ducts 89 are available, and the others are completely sealed.
本発明ではフード 1 7の構造を全面接合による密閉搆造とする。 即ち全面接合 によリ密閉構造とし熱膨張による伸縮を可能とした内部壁よリ成る内側箱体 1 7 Aと、 断熱材によリ内側箱体と隔離した外部壁よリ成る外側箱体 1 7 Bとを夫々 重ねて一体化する。 更に耐熱材ょリ成る床面にアンカーポル卜で固定したフード 用ソ一ルプレート 9 3上に、 耐熱弾性シートパッキンを介して、 外側箱体の中央 部を中心とし熱膨張による平行移動可能に、 熱膨脹用ノックピン 9 4を各外部壁 (外側箱体） の中心に据付ける。 両箱体間の貫通部は熱膨張に対処し伸縮可能に 断熱材を介して隔離する。其の出入口をシールして内部箱体内を外気と遮断する。 全面接合による内部箱体とは、 電気溶接や電子ビーム溶接、 プラズマ熔接、 レ一 ザ一熔接、 圧接、 圧入、 かしめ、 曲げ、 ロウ付等で完全に一体化する。 —部メン テナンス上必要な部分は、 耐熱シ一卜パッキンを介し其の全接合面周辺をねじ接 合等の接合加工により、 一体に接合した箱体である。 外側箱体は特に全面接合の 要は無く、固定構造でも良い。内外の箱体間の断熱厚さは箱体内部温度に依るが、 通常壁部で 1 5 0粍内外、 天井部で 2 0 0粍内外である。  In the present invention, the structure of the hood 17 is a hermetically sealed structure made by joining the entire surface. That is, an inner box 17 A consisting of an inner wall which is made of a closed structure by full-surface bonding and capable of expansion and contraction by thermal expansion, and an outer box 1 consisting of an outer wall separated from the inner box by heat insulating material 1 7 B and each other are integrated. In addition, it can be moved in parallel by thermal expansion around the center of the outer box via a heat-resistant elastic sheet packing on a hood sole plate 93 fixed to the floor made of heat-resistant material with an anchor port. Install the thermal expansion knock pin 94 at the center of each outer wall (outer box). The penetrating part between the two boxes is isolated through a heat insulating material so that it can expand and contract to cope with thermal expansion. The entrance is sealed to shut off the inside of the inner box from outside air. The inner box is completely integrated by electric welding, electron beam welding, plasma welding, laser welding, pressure welding, press fitting, caulking, bending, brazing, etc. The necessary part for the maintenance of the part is a box body that is integrally joined by heat-sealing packing and the entire periphery of the joint surface is joined by screwing or other joining processing. The outer box does not need to be entirely joined, and may have a fixed structure. The thickness of heat insulation between the inner and outer boxes depends on the temperature inside the box, but is usually 150 mm inside and outside the wall and 200 mm outside the ceiling.
—実施例として薄板パネルによる接合方法を述べると、 1 m内外の幅で、 L5 粍内外の厚さ SUS316の薄板を其の周辺部と、 強度上必要な要所で折り曲げリブ 状に補強し、 其の周辺部の相互接続部は、 完全に熔接等により接合して、 一体化 した内部壁とする。 従って其の全体寸法は、 輸送距離や輸送方法と、 港湾や道路 等の状況や、 現地抄紙機組立工場でのスペースや荷役方法等の条件で異なる。 現 地では各内部壁の内面を相互に熔接等で完全接合し、 内側箱体 1 フ Aを組み立て る。 —As an example, the joining method using thin panel is described as follows. A thin plate of SUS316 with inner and outer width of 1m and thickness of 5mm inside and outside is reinforced in the form of ribs at its periphery and at points where strength is required. The peripheral interconnects are completely joined by welding or the like to form an integrated internal wall. Therefore, the overall dimensions differ depending on the conditions such as the transport distance and transport method, the conditions of ports and roads, the space at the local paper machine assembling factory, and the cargo handling method. At this site, the inner surfaces of the inner walls are completely joined to each other by welding, etc., and an inner box 1A is assembled. You.
外部壁は工場建屋内部に面して配置するので、 比較的低温で、 最高 250°Cにも なる高温ガス体と接触する内部壁とは全く異なる。 1.0粍内外の厚さ SUS316の薄 板を、 単位面積の壁板周辺部を曲げリブ加工し、 相互にビス等で接続し、 一体化 して外側箱体 1 7 Bを作る。  Since the outer wall faces the interior of the factory building, it is quite different from the inner wall, which is in contact with hot gas at a relatively low temperature of up to 250 ° C. 1.0mm inner and outer thickness A SUS316 thin plate is bent around the perimeter of a unit area wall plate, connected to each other with screws, etc., and integrated to form an outer box 17B.
現地では到着した内外壁の強度上必要部分に、 L又は U曲げ加工等による内外 壁接続リブ 9 8を、 内外壁の内側に夫々取付け、 其の接続部は熱膨張による伸縮 を可能に、 耐熱板又はフレキシブル材 9 9を介し相互に接続可能とする。 内部壁 と外部壁との間には、 内部ガス体の温度により必要とされる厚さ、 一例として 1 5 0粍の耐熱性断熱材によリ内側箱体と隔離する。 其の外側に外部壁よリ成る外 側箱体を重ねて、 前記の内外壁接続リブ 9 8を相互に接続して一体化して箱体の フード 1 7を形成する。 両箱体間の貫通部は熱膨張に対処し、 相互のリブ材間を 伸縮可能な断熱材で隔離して接続すると共に、 其の出入口部をシールして内部箱 体内を外気と完全に遮断する。ここではフード 1 7の構成例について説明したが、 フード 1 7は傾斜天井部又は傾斜床部も含み、 この傾斜天井部及び傾斜床部も同 等の構成を有する。 すなわち、 図 1 6に示すように、 フード 1 7の天井部の大部 分を、 フード 1 7からの排気ガス開口として、 全面接合により密閉構造とし且つ 熱膨張による伸縮を可能とした天井部用傾斜内側箱体と傾斜外側箱体とを断熱材 を介して重ねて一体化して傾斜天井部とし、 更に、 フード 1 7の壁部 （側壁部） も同様に壁部用内側箱体と壁部用外側箱体とを断熱材を介して重ねて一体化して 形成する。 そして、 壁部用内側箱体と天井部用傾斜内側箱体とを相互に全面接合 により接続することでフード 1 7が形成される。 そして、 天井部に形成された排 気ガス開口に排気ガス中の異物を除去する排気フィルタ 3 3が設けられる。なお、 ここでは天井部について説明したが、 床部に排気ガス開口を設ける際にも同等の 構成を採用することができる。  At the site, the inner and outer wall connecting ribs 98 made by L or U bending etc. are attached to the inside of the inner and outer walls at the required parts of the inner and outer walls arriving on the strength, and the connection part can expand and contract by thermal expansion, heat resistance It can be connected to each other via a plate or a flexible material 99. The inner wall and the outer wall are separated from the inner box by a heat-resistant insulating material with a thickness required by the temperature of the inner gas body, for example, 150 mm. An outer box body consisting of an outer wall is stacked on the outside thereof, and the inner and outer wall connecting ribs 98 are connected to each other and integrated to form a hood 17 of the box body. The penetration between the two boxes responds to thermal expansion, and the ribs are connected and separated by a stretchable heat insulating material.The entrance and exit are sealed to completely shut off the inside of the inner box from outside air. I do. Here, the configuration example of the hood 17 has been described, but the hood 17 also includes an inclined ceiling or an inclined floor, and the inclined ceiling and the inclined floor have the same configuration. In other words, as shown in Fig. 16, most of the ceiling of the hood 17 is used as an exhaust gas opening from the hood 17 to form a hermetically sealed structure by joining the entire surface and to allow expansion and contraction by thermal expansion. The sloping inner box and the sloping outer box are overlapped and integrated via a heat insulating material to form a sloping ceiling, and the wall (side wall) of the hood 17 is similarly formed with the inner box for the wall and the wall. It is formed by stacking and integrating the outer box with the heat insulator. Then, the hood 17 is formed by connecting the inner box for the wall portion and the inclined inner box for the ceiling portion to each other by full-surface joining. An exhaust filter 33 for removing foreign matter in the exhaust gas is provided at an exhaust gas opening formed in the ceiling. Although the ceiling has been described here, the same configuration can be adopted when providing an exhaust gas opening on the floor.
乾燥装置 D S 7は、 図 1 6 , 図 1 7に示すように、 新設のフレーム 4上に上下 2段に複数の既設の第二種圧力容器の回転体 1を転用して設置した事例である。 既設抄紙機棟建屋の既設床面は、 フード内に接する部分を耐火煉瓦で被覆して、 高温ガスによリ鉄筋が熱膨張してコンクリー卜が噴破し破壊されるのを防止する ( 耐熱被覆された機械基礎上に、 アンカーポル卜により固定したソールプレート 1 4にドライヤーフレーム 4を組み上げる。 必要数の回転体 1を回転軸 2と回転体 軸受 3によりそれぞれ設置する。 多筒式回転体を設置する時は、 本実施例に示す 如く上下 2段にそれぞれ千鳥型に配置するのが工場スペースを有効に利用する上 で有利である。 特に本實施例は既設抄紙機を其の烬利用して改造した事例で、 狭 い空間に配置した実施例である。 As shown in Fig. 16 and Fig. 17, the drying device DS 7 is an example in which a rotating body 1 of a plurality of existing type 2 pressure vessels is diverted and installed on a new frame 4 in two upper and lower stages. . The existing floor of the existing paper machine building is covered with refractory bricks in contact with the inside of the hood to prevent high-temperature gas from expanding the rebar due to thermal expansion and blasting and breaking concrete. Assemble the dryer frame 4 on the sole plate 14 fixed with anchor ports on the machine base covered with heat. The required number of rotating bodies 1 are installed by the rotating shaft 2 and the rotating body bearings 3 respectively. When installing a multi-cylinder type rotating body, as shown in this embodiment, it is advantageous to arrange the upper and lower two stages in a staggered form in order to effectively utilize the factory space. In particular, the present embodiment is an example in which an existing paper machine is modified by utilizing the same, and is an embodiment in which the paper machine is arranged in a narrow space.
第七實施形態の室内配置例を示す、 図 1 8、 図 1 9、 図 2 0、 図 2 1により説 明すると、 密閉フード 1 7の天井部は略全面を開口して、 排気フィルタ 3 3を交 換時に操作側に引出し可能に据付ける。 フィルターの材質は耐熱性とし、 其の材 質や構造は循環ガス中の異物の種類により決定する。 ガス循環ブロワ一 2 5の静 圧は省エネ上成るべく低く抑える要が有り、 フィルタ一の濾過抵抗を抑えるには ガス通過速度を低くする要があり、 本発明の如く天井部又は床部或いは側面部等 の全表面を利用してフィルターを設置する事が好ましい。 第七實施形態では既設 工場の改造なので所要スペースが無く、 既設建屋屋上に両吸込みガス循環ブロワ 一 2 5を始め、 総てのガス加熱設備を設置した。 従って新設する機械類の全重量 に対し、 既設建屋屋上部が持たないので、 別途に鉄骨構造の架台を陸屋根に貫通 して其の上に設置した。 なお、 乾燥装置を 2階に設置し、 2階床部を排気ガス開 口としてもよい。 この場合、 床部を傾斜して形成してもよい。  Referring to FIGS. 18, 19, 20, and 21, which show examples of the indoor arrangement of the seventh embodiment, the ceiling of the closed hood 17 is opened almost entirely, and the exhaust filter 3 3 Is installed on the operation side so that it can be pulled out when replacing. The material of the filter is heat resistant, and its material and structure are determined by the type of foreign matter in the circulating gas. It is necessary to keep the static pressure of the gas circulation blower 25 as low as possible in order to save energy. To suppress the filtration resistance of the filter, it is necessary to lower the gas passage speed. It is preferable to install the filter using the entire surface of the part. In the seventh embodiment, the existing factory was remodeled, so there was no space required, and all gas heating equipment was installed on the roof of the existing building, including a two-inlet gas circulation blower. Therefore, since the upper part of the existing building does not have the total weight of the new machinery, a steel frame base was separately penetrated through the flat roof and installed on it. A drying device may be installed on the second floor, and the floor of the second floor may be used as an exhaust gas opening. In this case, the floor may be formed to be inclined.
本実施形態では、 即ち建屋天井部を貫通して、 両吸込ダク ト 2 4を立上げ、 ガ ス循環プロヮー 2 5の両吸込部に、 熱膨張に対処した伸縮可能な耐熱断熱材を介 して接続する。 ガス循環ブロワ一 2 5は、 屋上の架台上に防振装置を介して設置 する。 循環ガス熱交換器 3 4も、 屋上架台上で、 ガス循環ブロワ一 2 5の出口側 の延長上に、熱膨張に対処した伸縮可能な耐熱断熱材を介してダク 卜で接続する。 循環ガス熱交換器 3 4は、 其の外燃機取付け側が高温帯に成り、 間接熱交換で燃 焼ガスにより循環ガスを加熱する。 図示していない間接熱交換器内部は、 U型に 撚焼ガスがリターンする方式で、 高温燃焼帯は外部に二次空気流入用の***を有 し、 中温給気で外輪を冷却する円筒状の燃焼室で、 高温側は片側固定で、 反対の 低温側は熱膨脹に対処し滑り自由な構造である。 燃焼ガスの戻リ側とは反対側の 燃焼室で連結し、 特殊耐熱合金製の多管式チューブで、 其の両端末には熱膨脹に 対処したエキスパンシヨンジョイントが熔接接続されている。 熱交換器は全熔接 製で、 ガスや空気や燃焼ガスの洩れ込みは皆無であった。 循環ガス熱交換器 3 4 の出口側には、 給気ダク ト 2 7を熱膨張に対処した伸縮可能な耐熱断熱材を介し て接続し、屋根部を貫通して抄紙機駆動側、フード 1 7の給気連結ダク ト 2 1に、 キャップ入口ダンパー 8 8経由で接続する。 循環ガス熱交換器 3 4の燃焼帯側に は、 1 3 Aガス管 8 3に接続したガス ーナー 8 2と、 熱交燃焼ガス循環ファン 5 1 と、 同ダク ト 8 4を配置する。 燃焼ガスは省エネと燃焼帯の耐熱保護の為一 度に逃さず、 循環使用し、 補給する新給気と混合して、 前述した円筒状高温燃焼 帯の外部二次空気流入用***から外輪を冷却する。 従って高温燃焼帯に耐火煉瓦 等耐熱材は使用せず軽構造である。 排ガスはェコノマイザ一 5 2により、 / ーナ 一給気ファン 8 5から同ダク ト 8 6を経た新給気と熱交換後排気される。 従って 外部燃焼器の排ガス温度は 1 5 0 °C以下で、 熱効率は 9 5 %を超える。 In the present embodiment, that is, the two suction ducts 24 are started up through the ceiling of the building, and the two suction portions of the gas circulation probe 25 are provided with heat-resistant and heat-insulating materials capable of coping with thermal expansion. Connect. The gas circulation blower 25 will be installed on the rooftop via a vibration isolator. The circulating gas heat exchanger 34 is also connected by ducts to the extension of the outlet side of the gas circulating blower 25 on the rooftop frame through a heat-resistant heat-insulating material that can cope with thermal expansion. The circulating gas heat exchanger 34 has a high temperature zone on the side where the external combustion unit is mounted, and the circulating gas is heated by the combustion gas by indirect heat exchange. The inside of the indirect heat exchanger (not shown) is a system in which the twisting gas returns to the U-shape.The high-temperature combustion zone has a small hole for secondary air inflow outside, and a cylindrical shape that cools the outer ring with medium-temperature air supply. In the combustion chamber, the high temperature side is fixed on one side, and the opposite low temperature side has thermal expansion and is free to slide. Combined in the combustion chamber on the opposite side of the combustion gas return side, a multi-tube tube made of special heat-resistant alloy, both ends of which are subjected to thermal expansion The corresponding expansion joint is welded. The heat exchanger was made entirely by welding and there was no leakage of gas, air or combustion gas. An air supply duct 27 is connected to the outlet side of the circulating gas heat exchanger 34 via a heat-resistant and heat-insulating material that can cope with thermal expansion, and penetrates the roof to drive the paper machine and the hood 1 7 to the air supply connection duct 21 via cap inlet damper 88. On the combustion zone side of the circulating gas heat exchanger 34, a gas burner 82 connected to the 13A gas pipe 83, a heat exchange combustion gas circulation fan 51, and the duct 84 are arranged. Combustion gas is not escaping at one time to save energy and protect the combustion zone from heat.It is circulated and mixed with new air to be replenished. Cooling. Therefore, it does not use heat-resistant materials such as refractory bricks in the high-temperature combustion zone and has a light structure. The exhaust gas is exhausted by the economizer 52 after heat exchange with the new air that has passed through the duct 86 from the air supply fan 85. Therefore, the exhaust gas temperature of the external combustor is below 150 ° C and the thermal efficiency exceeds 95%.
フード 1 7の頂部に近く排気制御ダンパー 4 2を介して排気ダク ト 9 0を接続 し、 屋根部を貫通して架台上に設置した排気ファン 8 1に接続する。 又フード 1 7内部がブロワ一 2 4等の緊急停止で、 内圧が急上昇する場合に対処し、 大気開 放ダンパー 8 8を介し、 大気開放ダク ト 8 9を屋根部を貫通して設置する。 又ガ ス循環ブロワ一 2 5の吸込み口には、 給気制御ダンパー 3 7を介して、 給気口 9 1を設ける。 猶外気がフード内部に漏洩するのを防止する為、 前記フード 1 7内 部静圧をプラス圧に設定する様に、 過熱水蒸気乾燥では排気ファン 8 1の回転数 又は排気制御ダンパー 4 2により排気量のみを、 高温高湿度空気乾燥では給気制 御ダンパー 3 7と排気ファン 8 1の回転数又は排気制御ダンパー 4 2によリ給排 気量を制御して、 前記フード 1 7内部圧力を、 フード外部圧力より少し高めに設 定する。 余り高圧にすると内側箱体 1 7 Aのシール部が損傷するので、 9 . 8 0 7 P aから 9 8 . 0 6 7 P a内外が好ましい。  An exhaust duct 90 is connected near the top of the hood 17 via an exhaust control damper 42, and is connected to an exhaust fan 81 installed on a pedestal through the roof. Also, in the event that the internal pressure rises suddenly due to the emergency stop of the blower 24 inside the hood 17, the air release duct 89 will be installed through the roof via the air release damper 88. An air supply port 91 is provided at the suction port of the gas circulation blower 25 through an air supply control damper 37. In order to prevent extraneous air from leaking into the hood, set the static pressure inside the hood 17 to a positive pressure, and in superheated steam drying, exhaust by the rotation speed of the exhaust fan 81 or the exhaust control damper 42. In the case of high-temperature, high-humidity air drying, the internal pressure of the hood 17 is controlled by controlling the number of rotations of the air supply control damper 37 and the exhaust fan 81 or the air supply / exhaust amount by the exhaust control damper 42. Set slightly higher than the external pressure of the hood. If the pressure is too high, the seal portion of the inner box 17A will be damaged. Therefore, it is preferable that the pressure is from 9.8 Pa to 98.067 Pa.
ワイヤーパートで抄造されプレスパー卜で水分 6 0〜5 0 %に脱水された湿潤 状態のシ一ト状物質 3 5は、 断熱性のパネルにより完全密閉されたフード 1 7入 口部で、 上下のファブリック 3 6 A及ぴ 3 6 Bによリ揷まれて進行する。 次いで 上下のシーリングピンチロール 3 8の間を進行し、 スチームボックス 4 3とサク ションボックス 4 0間で急速に凝縮加熱される。 温度上昇したシート状物質 3 5 は、 上下のフアブリック 3 6 A及び 3 6 Bによリ揷まれて密閉フード 1 7の入口 部に到達し、 シート通過用フード出入口中央スリット 9 5を通過する。 フード 1 フ中では、 先ず下段入口側に設置された回転体 1入口に到り、 シート状物質 3 5 はファブリック 3 6 Aと 3 6 Bとの間にが挟まれて、 夫々吹出口 1 9と吸込口 2 2及びガス排出口 2 2を有する、 最初のキヤノビ一フード 1 5内を回転体 1に沿 つて周回する。フアブリック 3 6 Aと 3 6 B間に揷まれた、シー卜状物質 3 5は、 フアブリックテンションロール 1 1を介して回転体 1面に強力に圧着される。 シ —卜状物質 3 5内の水分は、 夫々吹出口 1 9からの高速高温ガスの衝撃で、 内部 より急速に蒸発し、 シート中をプレッシャーフローで一挙に通過して、 蒸発乾燥 が進行する。 The wet sheet-like substance 35, which was made in the wire part and dehydrated to 60 to 50% in moisture by a press part, is connected to the top and bottom of the hood 17 which is completely sealed by a heat insulating panel. Proceeds with fabric 36A and 36B. Next, it proceeds between the upper and lower sealing pinch rolls 38, and is rapidly condensed and heated between the steam box 43 and the suction box 40. Sheet material with increased temperature 3 5 Is wrapped by the upper and lower fabrics 36A and 36B, reaches the inlet of the closed hood 17, and passes through the central slit 95 of the hood for sheet passage. In the hood 1, firstly, it reaches the inlet of the rotating body 1 installed at the lower entrance side, and the sheet-like substance 35 is sandwiched between the fabrics 36 A and 36 B, and the outlets 1 9 respectively. Around the rotating body 1 in the first canopy hood 15 having the inlet 22 and the gas outlet 22. The sheet-like substance 35 sandwiched between the fabrics 36 A and 36 B is strongly pressed to the rotating body 1 surface via the fabric tension roll 11. The water in the sheet-like substance 35 evaporates rapidly from the inside due to the impact of the high-speed high-temperature gas from the outlet 19, and passes through the sheet at a glance with a pressure flow, and evaporating and drying proceeds. .
1本目の回転体 1を通過したシート状物質 3 5は、 其の ί尽両フアブリック 3 6 Α及び 3 6 Βに挟まれながら、 ほぼ平面状の自由走行部で、 高速で流動する膨大 な高温ガスによる加熱ガス雰囲気中を走行する。 其処では上下に有るキヤノピー フード 1 5のガス排出口 2 2から噴出し、 ガス循環ブロワ一 2 5により天井部に 向け上昇する加熱ガスと、 シート状物質 3 5との温度差により、 更に乾燥蒸発が 進行する。 其の後再び上段に設置された 2本目の乾燥体 1入口に到り、 前記と同 様の乾燥が繰り返される。  The sheet-like substance 35 passing through the first rotating body 1 is a substantially flat free-running section while being sandwiched between the exhausted fabrics 36 and 36, and a huge amount of high-temperature fluid flowing at a high speed. It travels in an atmosphere heated by gas. At that point, the gas is blown out from the gas outlets 22 of the upper and lower canopy hoods 15, and further dried and evaporated due to the temperature difference between the heated gas rising toward the ceiling by the gas circulation blower 25 and the sheet material 35. Progresses. After that, it reaches the inlet of the second drying body 1 installed in the upper stage again, and the same drying as described above is repeated.
最後の回転体 1を出たシート状物質 3 5は、 上下のフアブリック 3 6 A及び 3 6 Bに揷まれたまま、 ファブリックロール 8，により周回して回転体 1を離れ、 フ —ド 1 7出口部のシート通過用フード出入リロ中央スリツト 9 5を経て進行し、 スチームボックス 4 3とサクションボックス 4 0によリ、 スチームカーテンでフ —ド 1 7内への外部空気の流入を防止し、 更に上下のシ一リングピンチロール 3 8によリニップ圧をかけて、 空気の侵入を防止しながら乾燥フード出口より外部 に搬出する。 上下段のェンドレスフアブリック 3 6 A及ぴ 3 6 Bはキャンバス口 —ル 8， を経て、 シーリングフレーム 4 5及ぴファブリック又はブランケット通 過用上下スリツトを通過し、 再びフード 1 7内に戻り、 上記の乾燥サイクルを繰 り返す。  The sheet-like substance 35 coming out of the last rotating body 1 is wrapped by the fabric rolls 8 and leaves the rotating body 1 while being covered by the upper and lower fabrics 36 A and 36 B, and the feed 17 It proceeds through the central slit 95 of the hood for sheet passage at the exit and the relo center slit 95. The steam box 43 and the suction box 40 prevent the outside air from flowing into the hood 17 with the steam curtain. Further, a nip pressure is applied by the upper and lower sealing pinch rolls 38 to carry out the air from the drying hood outlet to the outside while preventing air from entering. The upper and lower endless fabrics 36 A and 36 B pass through the canvas opening 8 through the sealing frame 45 and the upper and lower slits for fabric or blanket passage, and then into the hood 17 again. Return and repeat the above drying cycle.
回転体 1上の略半円筒面状と其の延長上で略平面状とが連続した馬蹄形断面の 蒸発面で、 上下二枚のフアブリック 3 6 A及び 3 6 Bに挟まれたシート状物質 3 5は、 半円筒面上では外周より平面状では両面から、 1 0 0 °C以上の高速加熱ガ スが吹き付けられる。 シート状物質 3 5より蒸発した水蒸気を含む 1 0 0 °C内外 の排ガスは、 キヤノピーフード 1 5内の吸込口 2 2を経て吸引され、 フード 1 7 内の天井部の排気フィルタ 3 3により紙粉ミスト等の異物を除去して、 吸込みダ ク ト 2 4を上昇し、 ガス循環ブロワ一 2 5に到る。 .ガス循環ブロワ一 2 5により 昇圧された排気ガスは、 ダク トで連結した循環ガス熟交換器 3 4に送気され、 好 ましくは 1 0 0 °C以上に加熱して、 その大部分は給気ダク ト 2 7を経て、 キヤッ プ入口ダンバ一 8 7を経て給気函連結ダク 卜 2 1から、 キヤノビ一フード 1 5に 送られる。 給気函 2 0を経て吹出口 1 9よリ上下 2枚のェンドレスフアブリック 3 6 A及び 3 6 Bによりサンドィツチ状に挟み込まれたシー卜状物質 3 5に衝撃 流で吹付け、 エンドレスファブリック 3 6中の空隙部に滞留している蒸発水蒸気 を駆逐して、 直接シート状物質 3 5を加熱すると共に、 シート状物質 3 5周辺の 飽和水蒸気よリ成る境界層を乱して蒸発を促進し好ましくは 1 3 0 °C内外の加熱 ガス雰囲気とする。 An evaporating surface with a horseshoe-shaped cross-section in which a substantially semi-cylindrical surface on the rotating body 1 and a substantially flat shape on its extension are continuous, and a sheet-like substance 3 sandwiched between two upper and lower fabrics 36 A and 36 B 5, a high-speed heating gas of 100 ° C. or more is sprayed from both sides of the semi-cylindrical surface in a plane shape from the outer periphery. Exhaust gas at 100 ° C and outside including water vapor evaporating from the sheet material 35 is sucked through the suction port 22 in the canopy hood 15 and exhausted by the ceiling exhaust filter 3 3 in the hood 17. Foreign matter such as paper dust mist is removed, and the suction duct 24 rises to reach the gas circulation blower 25. The exhaust gas pressurized by the gas circulation blower 25 is sent to a circulating gas maturation exchanger 34 connected with a duct, and is preferably heated to 100 ° C or more, and most of it is heated. The air is supplied from the air supply duct 27 to the canopy hood 15 from the air supply box connection duct 21 through the cap inlet damper 187. Blows through the air supply box 20 and blows out the outlet 19 through the upper and lower two endless fabrics 36 A and 36 B. The vaporized water vapor remaining in the voids in the fabric 36 is expelled, and the sheet-like material 35 is directly heated, and the boundary layer made of saturated water vapor around the sheet-like material 35 is disturbed to evaporate. The temperature is preferably promoted to a heating gas atmosphere of 130 ° C. or outside.
過熱水蒸気乾燥法で運転開始時の自動運転方法は①酸素濃度制御を 0 %とし、 ②ガス循環ブロワ一 2 5が起動しガス循環流量が当初設定値になる迄ブロワ一の The automatic operation method at the start of operation with the superheated steam drying method is as follows: (1) Oxygen concentration control is set to 0%, (2) Gas circulation blower is started until the gas circulation flow rate reaches the initial set value.
I N Vモータ一を制御して上昇 (ホッ トスタートにしてモーター容量を小型化す る為、低速回転で始動し規定温度以上で仕様速度迄増速させる）させ、③フ一ド 1 7内静圧制御値を設定し、④次いで循環ガス熱交換器 3 4の燃焼器系統を始動し、 先ず燃焼空気ファンや燃焼室ガス循環ファンが始動し、 ガスバーナー 8 2の 1 3 Aガス燃料制御弁 6 4を着火装置によリ点火しながら制御し、 フード 1 7内温度 を設定値迄上昇させる。 ⑤循環ガス熱交換器 3 4の出口給気ダク ト 2 7温度が上 昇すれば、 蒸気噴射弁 3 1が開きシート 3 5からの水分蒸発が開始し酸素濃度が 0 %になれば閉じ、 事後はをフード 1 7内静圧を排気ファン 8 1の回転数又は排 気制御ダンパー 4 2によリ制御する事によリ、 湿潤シー卜からの水分蒸発に起因 する余剰過熱水蒸気を排気する。 猶蒸気噴射量の先頭負荷を抑え且運転開始時間 を短縮する為にフード内温度が設定値になれば給水制御弁 6 3を開き、 水を噴射 し当初の過熱水蒸気不足量を自給しても良く、 酸素濃度が 0 %になれば閉じる。Control the INV motor to raise (start at a low speed and increase the speed to the specified speed above the specified temperature in order to reduce the motor capacity by hot start), and ③ control the static pressure inside the hood 17 Set the value, and then start the combustor system of the circulating gas heat exchanger 34. First, the combustion air fan and the combustion chamber gas circulation fan start, and the gas burner 8 2 13 A gas fuel control valve 6 4 Is controlled by the ignition device to raise the temperature in the hood 17 to the set value.出口 If the temperature of the air supply duct 27 at the outlet of the circulating gas heat exchanger 34 rises, the steam injection valve 31 opens and water evaporation from the seat 35 starts and closes when the oxygen concentration reaches 0%. After that, the static pressure in the hood 17 is controlled by the rotation speed of the exhaust fan 81 or the exhaust control damper 42 to exhaust the excess superheated steam due to the evaporation of water from the wet sheet. . When the temperature in the hood reaches the set value in order to suppress the top load of the steam injection amount and shorten the operation start time, the water supply control valve 63 is opened, water is injected, and even if the initial superheated steam deficiency is self-supplied. Good, closes when oxygen concentration reaches 0%.
【Π】 ，高温高露点空気乾燥法で運転開始時の自動運転方法は①酸素濃度制御を 夫々其の設定値％とし、 ②ガス循環ブロワ一 2 5が起動しガス循環流量が当初設 定値になる迄ブロワ一の I N Vモーターを制御して上昇させ、 ③フード 1 7内静 圧制御値を設定し、 ④次いで循環ガス熱交換器 3 4の燃焼器系統を始動し、 先ず 燃焼空気ファンや燃焼室ガス循環ファンが始動し、 ガスバーナー 8 2の 1 3 Aガ ス燃料制御弁 6 4を着火装置により点火しながら制御し、 フード 1 7内温度を設 定値迄上昇させる。 ⑤循環ガス熱交換器 3 4の出口給気ダク ト 2フ温度が上昇す れば、 蒸気噴射弁 3 が開きシート 3 5からの水分蒸発が開始し酸素濃度が当初 の設定値％になれば閉じ、 事後は給気制御ダンパー 4 2と、 排気ファン 8 1又は 排気制御ダンバ一4 2により、 酸素濃度％を主にフード 1 7内静圧を従に制御す る。 猶蒸気噴射量の先頭負荷を抑え且運転開始時間を短縮する為にフード内温度 が設定値になれば給水制御弁 6 3を開き、 水を噴霧し当初の過熱水蒸気不足量を 自給しても良い。 [Π], The automatic operation method at the start of operation by high temperature and high dew point air drying method 2) Gas circulation blower 25 is started and the INV motor of the blower is controlled to increase until the gas circulation flow rate reaches the initially set value, and 3) The static pressure control value inside the hood 17 is set. Then, start the combustor system of the circulating gas heat exchanger 34, start the combustion air fan and the combustion chamber gas circulation fan, and turn on the 13A gas fuel control valve 64 of the gas burner 82. Control while igniting with the ignition device to raise the temperature in the hood 17 to the set value.れ ば If the temperature of the air supply duct 2 at the outlet of the circulating gas heat exchanger 34 rises, the steam injection valve 3 opens and water evaporation from the sheet 35 starts, and the oxygen concentration reaches the initial set value%. After closing, the air supply control damper 42 and the exhaust fan 81 or the exhaust control damper 42 control the oxygen concentration% mainly and the static pressure in the hood 17 accordingly. If the temperature in the hood reaches a set value in order to suppress the initial load of the steam injection amount and shorten the operation start time, the water supply control valve 63 is opened, and water is sprayed to supply the initial amount of superheated steam deficiency by itself. good.
紙切れ時の自動運転方法は、 乾燥パート以外の要因で短時間で修復可能な紙切 れ時は、 フード 1 7内温度が急上昇してガスバーナーが燃焼停止に到るのを避け る為に、 湿潤シー卜からの水分蒸発に略相当する水量を給水制御弁 6 3を開き水 を噴霧しても良い。 フード 1 7内温度が急上昇するとフード 1 7や帯状帯 3 6、 回転体軸受 3、 強制給油装置、 キヤリヤーロープ等が損傷する恐れがあるので絶 対に避ける要が有る。  The automatic operation method when the paper runs out is to prevent the gas burner from stopping due to a sudden rise in the temperature inside the hood 17 when the paper can be repaired in a short time due to factors other than the drying part. The amount of water substantially equivalent to the evaporation of water from the wet sheet may be opened by opening the water supply control valve 63. If the temperature inside the hood 17 rises sharply, the hood 17, the belt-like band 36, the rotating bearing 3, the forced lubrication device, the carrier rope, etc. may be damaged, so it is absolutely necessary to avoid it.
【IV】 .停止時の自動運転方法は、 過熱水蒸気乾燥法で運転時は高温高露点空気乾 燥法による運転に切替え、 シート 3 5のフード 1 7入口前での切断と共にガスバ 一ナーを消火し、 循環ガス熱交換器 3 4の燃焼器系統を停止する為先ず燃焼空気 ファンや'燃焼室ガス循環ファンが停止し、 給気制御ダンパー 4 2と、 排気ファン [IV] Automatic operation method at the time of stoppage is switched to operation by high temperature and high dew point air drying method when operating by superheated steam drying method, and extinguish gas burner with cutting of sheet 35 before hood 17 entrance. Then, to stop the combustor system of the circulating gas heat exchanger 34, first the combustion air fan and the combustion chamber gas circulation fan are stopped, and the air supply control damper 42 and the exhaust fan
8 1又は排気制御ダンパー 4 2によリ給排気量を夫々最大とし、 過熱水蒸気が無 い 9 9 °C以下迄温度を下降させ、 予めガス循環流量を設定温度以下では設定値以 下になる迄ブロワ一の I N Vモーターを制御して下降 (ホッ トスタートにしてモ ータ—容量を小型化する為、低速回転で始動し規定温度以下では減速させる）させ、 フード 1 7内が結露の恐れが無い相対湿度値 1 0 %以下になり、 火傷の恐れが無 い乾球温度 6 0 °C以下で、 ガス循環ブロワ一 2 5が停止する。 8 1 or the exhaust control damper 4 2 to maximize the supply / exhaust air volume, respectively, no superheated steam.The temperature is lowered to 9 9 ° C or less.If the gas circulation flow rate is below the set temperature, it will be below the set value in advance. Until then, control the INV motor of the blower and lower it (start at a low speed and reduce the speed below the specified temperature in order to reduce the motor capacity by using a hot start), and there is a risk of condensation inside the hood 17 The gas circulation blower 25 stops at a dry-bulb temperature of 60 ° C or less, where there is no risk of burns and the relative humidity falls to 10% or less.
【V】 ·其の他の自動運転方法は、 シー卜 3 5の水分％を設定値に保つ如くガス循 環ブロワ一 2 5の I N Vモータ一の回転数を制御する。 キャップフード 1 7内温 度が設定値以下と、 酸素濃度％が設定値以上でないとフード開閉装置 1 8をロッ クして開閉不能にする。 運転準備時の自動運転方法は、 フード開閉装置 1 8を口 ックし、 強制潤滑油装置と同冷却装置の起動する。 其の他各キヤノピーフード 1 5の全圧が略一定になる様にキャップ入口ダンパー 8 7を制御すると共に、 キヤ ノピーフード 1 5のガス吹出口 1 9と回転体 1の表面との間隔を夫々一定に保つ 如く昇降装置 1 6を制御する。 [V] · Other automatic operation methods include gas circulation so that the moisture percentage of sheet 35 remains at the set value. Controls the rotation speed of the INV motor of the ring blower 25. If the inside temperature of the cap hood 17 is lower than the set value and the oxygen concentration% is not higher than the set value, the hood opening / closing device 18 is locked so that it cannot be opened / closed. In the automatic operation method during operation preparation, the hood opening / closing device 18 is locked, and the forced lubricating oil device and the cooling device are started. In addition, the cap inlet damper 87 is controlled so that the total pressure of each canopy hood 15 is substantially constant, and the distance between the gas outlet 19 of the canopy hood 15 and the surface of the rotating body 1 is respectively set. Control the lifting device 16 to keep it constant.
次に、 本発明の乾燥工程を備えたシート状物質の製造方法に基づく実験結果に ついて、 以下に詳述する。  Next, experimental results based on the method for producing a sheet-like substance having the drying step of the present invention will be described in detail below.
《実施例 1》  << Example 1 >>
本発明の方法を実施した場合のシート状物質の製造方法で、 1 5 0 °C以上の過 熱水蒸気を使用する実施例として、 テストプラントでの実証結果と過熱水蒸気拘 束衝撃乾燥装置の熱バランスの熱工学計算 （抄造頓数 507.384絶乾 BDkg/hrで、 単純化するためサイズプレスとアフタードライヤは除外し入口水分 56%出口水 分 5%とし蒸発水分量 619.057kg/hr、） とにより記述する。  As an example of using a superheated steam of 150 ° C or more in the method for producing a sheet-like substance when the method of the present invention is carried out, the results of verification in a test plant and the heat Thermal engineering calculation of the balance (507.384 absolutely dry BDkg / hr, excluding size press and after-dryer for simplicity, excluding 56% inlet water and 5% outlet water, and 619.057kg / hr evaporating water) Describe.
衝撃フードノズル (吹出口) 出口の蒸気条件は、  The impact hood nozzle (air outlet) outlet steam condition is
t=250°C、  t = 250 ° C,
υ =2.454m3/kg、 υ = 2.454m 3 / kg,
i =710.4kcal/kg = 2974.3, kJ/kg、  i = 710.4kcal / kg = 2974.3, kJ / kg,
衝撃ノズルとサクシヨンフアブリック (フアブリックベル卜、 帯状帯) 区間の ガ入 IL> は、  The impingement IL> of the impact nozzle and the sacrifice fabric (fabric belt, zonal belt) section is
合計 2130.393m3/min, Total 2130.393m 3 / min,
52087.848kg/ln\  52087.848kg / ln \
37003.207 x 103kcal/hr = 154925.0 >< 103kJ/hr 37003.207 x 10 3 kcal / hr = 154925.0><10 3 kJ / hr
である。  It is.
なお、 共通項目で、  In addition, in common items,
シート出入リロ (入口温度 27°C)の絶乾紙料顕熱差を、  The absolute dry paper stock sensible heat difference between the sheet loli (inlet temperature 27 ° C)
10073kal/hr = 42173.6kJ/hr、  10073kal / hr = 42173.6kJ / hr,
シート蒸発水分の蒸発潜熱を、 378553kcal/hr = 1584925.7kJ/hr, The latent heat of evaporation of the sheet evaporation moisture 378553kcal / hr = 1584925.7kJ / hr,
シート蒸発水蒸気を排気温度迄加熱所要熱量を、  Heat the sheet vapor to the exhaust temperature
38945kcal/hr = 163054.9kJ/hr.  38945kcal / hr = 163054.9kJ / hr.
フ一ドゃダク ト類での損熱を、  Loss of heat from feed products
25382kcal/hr = 106269.4kJ/hr、  25382kcal / hr = 106269.4kJ / hr,
その他損熱を、  Other heat loss,
15265(^ =1では 15427, =0.25では 24052, =0.05 では 33740)kcal/hr = 63911.5kJ/hr、  15265 (15427 for ^ = 1, 24052 for = 0.25, 33740 for = 0.05) kcal / hr = 63911.5 kJ / hr,
とする。 And
キヤノピーフード （衝撃フード） 排出口後で蒸発水蒸気 (余剰分のゥ： cッ卜パー ト持ち込み水分)排気後の条件は、  Canopy hood (shock hood) Evaporated water vapor (excess 余: water carried by cut-part) after exhaust port
i= [(52087.848 x 710.4)—（10073 +25382 + 15265)— 619.057 x (i一 27)〕  i = [(52087.848 x 710.4) — (10073 +25382 + 15265) — 619.057 x (i-27)]
+ 52087.848、  + 52087.848,
i=701.41 lkcal/kg = 2936.7kJ/hr、  i = 701.41 lkcal / kg = 2936.7kJ / hr,
t=230.87°C、  t = 230.87 ° C,
V =2.363mJ/kg、 V = 2.363m J / kg,
(注記）  (Note)
別の計算方法としては、シート蒸発水分の蒸発潜熱と所要加熱熱量を上記ェン タルピー計算式に導入しても良い。  As another calculation method, the latent heat of evaporation of the sheet evaporation moisture and the required heating heat may be introduced into the above-mentioned enthalpy calculation formula.
i= 〔(52087.848 X 710.4)—（10073 +378553 +38945+25382 + 15265)〕  i = [(52087.848 X 710.4)-(10073 +378553 + 38945 + 25382 + 15265)]
÷ 52087.848=701.41 lkcal/kg = 2936.7kJ/hr。  ÷ 52087.848 = 701.41 lkcal / kg = 2936.7kJ / hr.
漏洩蒸気量を除き余剰分を 230.87°Cの侮で他工程に送り、略同量の過熱水蒸気 を再加熱する時は、循環水蒸気所要加熱量は  When the surplus is sent to another process at 230.87 ° C except for the amount of leaked steam and the same amount of superheated steam is reheated, the required amount of circulating steam is
52087.848 (710.4-701.411)  52087.848 (710.4-701.411)
= 468.218 X 103kcal/hr = 1960.3 x 103kJ/hr = 468.218 X 10 3 kcal / hr = 1960.3 x 10 3 kJ / hr
である。 It is.
なお、 絶乾 (BD)kg当リでは、 922.808kcal/kg = 3863.6kJ/kg である。  In addition, in the case of absolutely dry (BD) kg, 922.808 kcal / kg = 3863.6 kJ / kg.
また、 蒸発水分 kg当リでは、 756.341kcal/kg = 3166.6kJ/kg である。  In addition, 756.341 kcal / kg = 3166.6 kJ / kg for kg of evaporated water.
なお、 上記の計算結果を熱効率で表示すると以下のとおりである。 ① .入熱 The above calculation results are shown below in terms of thermal efficiency. ①. Heat input
ボイラー燃料発熱量は 13Aガス燃焼とし、ボイラーはガスバーナーと水蒸気加 熱用間接熱交と空気予熱排ガス熱交に依る。 入熱は外気基準とし燃料の発熱量の みとし、出熱は循環ガスの吸熱量にボイラ一単体での熱損失を加え、  The boiler calorific value is 13A gas combustion, and the boiler uses a gas burner, indirect heat exchange for steam heating and air preheating exhaust gas heat exchange. The heat input is based on the outside air, and only the calorific value of the fuel is used.The heat output is the heat absorption of the circulating gas plus the heat loss of the boiler alone.
468.218+23.725+5.917+0.039  468.218 + 23.725 + 5.917 + 0.039
= 497.899 X 103kcal/hr-2084.6 x 103kJ/hrとなる。 = The 497.899 X 10 3 kcal / hr- 2084.6 x 10 3 kJ / hr.
紙 BD頓当レリでは、 497.899÷0.507384頓 = 981.3 103kcal、 2084.6÷0.507384頓= 4108.5 X I 03kJ For paper BD Tonrel, 497.899 ÷ 0.507384 ton = 981.3 10 3 kcal, 2084.6 ÷ 0.507384 ton = 4108.5 XI 0 3 kJ
② .出熱 ' ' ー①.余剰過熱水蒸気の顕熱 (入リロシート温度 27°C基準)は、 619.057kg/hr の蒸発 水分量が余剰になるので、之を系外に排出してバランスを制御する。  ②. Heat output '' -①. The sensible heat of the excess superheated steam (based on the input relosheet temperature of 27 ° C) has an excess of 619.057 kg / hr of evaporating water. Control.
619.057 X (701.411 -27) = 417.499 x 103kcal/hr = 1747.98 x 103kJ/hr 619.057 X (701.411 -27) = 417.499 x 10 3 kcal / hr = 1747.98 x 10 3 kJ / hr
紙 BD頓当リでは、 822.8 x i 03kcaU 3445.1 x 103kJ. For paper BD Tontori, 822.8 xi 0 3 kcaU 3445.1 x 10 3 kJ.
過熱水蒸気乾燥法では余剰過熱水蒸気を有効に活用すれば、 紙 BD頓当リの所要 熱量は大幅に減少する事が判明した。 即ち差し引き実消費燃料発熱量は、 紙 BD 頓当 yでは、 981.3— 822.8 = 158.5 x i03kcal、4108.5— 3445.1 =663.4 X 103kJ、約 16.1 % で約 1/6である。 In the superheated steam drying method, it was found that if surplus superheated steam is used effectively, the required heat of paper BD is greatly reduced. That subtracted actual fuel consumed calorific value, the paper BD Tomito y, 981.3- 822.8 = 158.5 x i0 3 kcal, 4108.5- 3445.1 = 663.4 X 10 3 kJ, is about 1/6 to about 16.1%.
之は後に記載した従来の高圧容器乾燥筒式乾燥時の、フードの排気損熱が 73.6%、 ドレンの持ち去リ顕熱が 7.9%、 合計 81.5 %もある事からも自明の事である。 —②.抄紙機のフードゃダクト類での損熱は、 This is obvious from the fact that the exhaust heat loss of the hood and the sensible heat of removal of the drain are 7.9% and 7.9%, respectively, when the conventional high-pressure vessel drying cylinder type drying described later is used, for a total of 81.5%. —②. The heat loss in the hood and ducts of the paper machine
25.382 X 103kcal/hr = 106.3 x 10]kJ/hr 25.382 X 10 3 kcal / hr = 106.3 x 10] kJ / hr
—③.ボイラーの排ガス顕熱は、 —③.The sensible heat of exhaust gas from the boiler is
23.725 X 103kcal/hr = 99.3 >< 103kJ/hr 23.725 X 10 3 kcal / hr = 99.3><10 3 kJ / hr
ー④.ボイラー単体の輻射伝導その他損熱は、 ー ④.The radiation conduction and other heat loss of the boiler
5.917 X 10Jkcal/hr = 24.77 x 103kJ/lir 5.917 X 10 J kcal / hr = 24.77 x 10 3 kJ / lir
ー⑤.ボイラーの不完全燃焼 に依る損熱は、 ー ⑤. The heat loss due to incomplete combustion of the boiler is
0.039 X 103kcal/hr = 0.163 103kJ/hr 0.039 X 10 3 kcal / hr = 0.163 10 3 kJ / hr
ー⑥,その他リーク等での損熱は、 ー ⑥, heat loss due to other leaks, etc.
15.265 X 103kcal/hr = 63,9 x 103kJ/hi- ー⑦.絶乾紙料の顕熱は、 15.265 X 10 3 kcal / hr = 63,9 x 10 3 kJ / hi- ー ⑦.
8.631 X 103kcal/hr = 36.1 x 103kJ/lir 8.631 X 10 3 kcal / hr = 36.1 x 10 3 kJ / lir
ー⑧.紙料中水分の顕熱は、 ー ⑧. The sensible heat of moisture in the paper
1.442 X 103kcal/hr = 6.04 x 103kJ/hr 1.442 X 10 3 kcal / hr = 6.04 x 10 3 kJ / hr
③.熱効率 ③. Thermal efficiency
—①.余剰水蒸気は利用しないと仮定し、水分蒸発に要する熱量より熱効率を算出 すると、  —①. Assuming that excess water vapor is not used, and calculating the thermal efficiency from the amount of heat required for water evaporation,
(378.553÷497.898)x 100=76.03%  (378.553 ÷ 497.898) x 100 = 76.03%
ー②.余剰水蒸気を他の工程で有効熱として利用する時、抄紙機の乾燥工程を余剰 水蒸気製造用ボイラーとして評価し、其の熱効率を算出すると、 ー ②. When surplus steam is used as effective heat in other processes, the drying process of the paper machine is evaluated as a boiler for producing surplus steam, and its heat efficiency is calculated.
(417.499÷497.899)x 100 = 83.85%である。  (417.499 ÷ 497.899) × 100 = 83.85%.
—③.余剰水蒸気を有効に利用出来る時は、今迄定義されて来た熱効率とは異なる 視点より論ずる要があり、例えば水分蒸発に要する熱量を基準に考えると、実際に 消費される熱量は差額の、 —③. When surplus steam can be used effectively, it is necessary to discuss from a viewpoint different from the thermal efficiency defined so far. For example, considering the amount of heat required for water evaporation, the amount of heat actually consumed is Of the difference,
497.899 -417.499= 80.400 x 103kcal/ kcal/hrであり、 497.899 -417.499 = 80.400 x 10 3 kcal / kcal / hr,
378.553÷(497.899— 417.499) x 100=470.84%の仮称余剰熱効率となる。  378.553 ÷ (497.899—417.499) x 100 = 470.84%, which is a tentative surplus thermal efficiency.
参考までに従来型の高圧容器乾燥筒式乾燥装置 （熱回収装置付き高露天密閉フ -ド） の熱効率は、 ボイラー燃料発熱量を基準とする時で 50〜 55%内外であ るが、 理想的な条件下での熱精算値を示すと以下のとおりである。  For reference, the thermal efficiency of a conventional high-pressure vessel drying cylinder type drying device (high open-air hermetic hood with heat recovery device) is between 50% and 55% based on the boiler fuel calorific value, but is ideal. The thermal settlement value under typical conditions is as follows.
①.入熱 ①. Heat input
—①.ドライヤー供給蒸気の顕熱 (外気 32°C基準時）  —①. Sensible heat of steam supplied to dryer (at 32 ° C standard)
高露点密閉フードとし、排気熱交と ドレン熱交とフラッシュ熱交によリそれぞれ 給気加熱し、 蒸気給気加熱は不要とする。 これらの熱交換量は相殺してそれぞれ 原始温度で計算し、 ドライヤーの直接熱効率を 96.5%と仮定すると、 ドライヤー 加熱所要熱量は大気圧下の蒸発として以下のとおりである。 A high dew point sealed hood will be used to heat the air supply by exhaust heat exchange, drain heat exchange, and flash heat exchange, eliminating the need for steam air supply heating. These heat exchange amounts are offset each other and calculated at the primitive temperature, and assuming that the direct thermal efficiency of the dryer is 96.5%, the required heat amount of the dryer heating is as follows as evaporation under atmospheric pressure.
2.433x1 02 k P aの飽和蒸気は（日本機械学会 -改定蒸気表及び線図 - 10 頁 - 1950)： The saturated steam of 2.433x10 2 kPa is (JSME-Revised Steam Table and Diagram-Page 10-1950):
ί' = 1 25. 84 k c a l /k g = 526. 87 k J / k g  ί '= 1 25.84 kcal / kg = 526.87 kJ / kg
i" = 648. O k c a l /k g = 2, 7 1 3. 05 k J/k g r =i"-i'= 522. 2 k c a l /k g = 2, 1 86. 35 k J / k g 後述の排気持ち去リ顕熱よリ、 i "= 648. O kcal / kg = 2, 7 1 3.05 k J / kg r = i "-i '= 522.2 kcal / kg = 2, 186.35 kJ / kg
〔467233.971+8631 + 1,442〕 +0.965  (467233.971 + 8631 + 1,442) +0.965
= 484190.719kcal/hr = 2027209.7 x 103kJ/hr、 = 484190.719kcal / hr = 2027209.7 x 10 3 kJ / hr,
したがって、必要な供給蒸気量及び所要熱量は、ブロースルー蒸気量を無視して、 ドライヤー内蒸気圧力を 243. 2 k P aとすると以下のとおりである。  Therefore, the required supply steam amount and required heat amount are as follows, assuming that the steam pressure inside the dryer is 243.2 kPa, ignoring the blow-through steam amount.
484190.719÷522.2 = 927.213kg/hr  484190.719 ÷ 522.2 = 927.213kg / hr
927.213 X (648-32)= 571.168 x 103kcal/hr = 2391.4 x 103kJ/hi\ 927.213 X (648-32) = 571.168 x 10 3 kcal / hr = 2391.4 x 10 3 kJ / hi \
ー②.給気の持ち込み顕熱 ー ②.
給気の条件は夏場で、  The air supply condition is in summer,
DBT = 32°C、  DBT = 32 ° C,
χ =0.0245、  χ = 0.0245,
ν =0.898、  ν = 0.898,
i = 22.6、  i = 22.6,
排気の条件は夏場で、  Exhaust conditions are in summer,
DBT = 84。C、  DBT = 84. C,
DP - 58。C、  DP-58. C,
χ =0.135、  χ = 0.135,
υ= 1.23、  υ = 1.23,
i= 106、  i = 106,
とすると以下のとおりである （但し 0°C基準時で、外気基準時は無視する）。 Then, it is as follows (However, it is based on 0 ° C and ignored when outside air is used)
〔619.057÷(0.135— 0.0245)〕 X22.6  [619.057 ÷ (0.135- 0.0245)] X22.6
= 126.612 X 103kcal/hr = 530.1 x 103kJ/hi\ = 126.612 X 10 3 kcal / hr = 530.1 x 10 3 kJ / hi \
因みに、 排気量は以下のとおりである。  Incidentally, the displacement is as follows.
〔619.057÷(0.135— 0,0245)〕 x 1.23 + 60  (619.057 ÷ (0.135-0,0245)) x 1.23 + 60
= 114.848m3 /min = 114.848m 3 / min
②.出熱 ②. Heat output
ー①.排気に依る持ち去リ顕熱 (外気 32°C基準)は、 ー ①.The sensible heat removed by exhaust (based on outside air at 32 ° C)
〔619.057÷(0.135— 0·0245)〕 ΧΠ06-22.6) = 467.233971 x 103kcal/hr = 1956.2 x 103kJ/hr (619.057 (0.135-0.245)) ΧΠ06-22.6) = 467.233971 x 10 3 kcal / hr = 1956.2 x 10 3 kJ / hr
ー②.ドレンの持ち去リ顕熱は、 排出ドレン温度をドレン熱交やフラッシュ熱交 を前提として 86°Cとすると、以下のとおりである。 ー ②. The sensible heat of the drain is as follows, assuming that the discharged drain temperature is 86 ° C assuming drain heat exchange and flash heat exchange.
927.213 X (86-32)  927.213 X (86-32)
= 50.069 X 103kcal/lir = 209.6 103kJ/hr = 50.069 X 10 3 kcal / lir = 209.6 10 3 kJ / hr
ー③.フード等の輻射損熱は、 簡易的に全入熱より引き、 ー ③. Radiation loss heat of hood etc. is simply subtracted from total heat input.
571.168 - 467.234 - 50.070 - 8.631 - 1.442  571.168-467.234-50.070-8.631-1.442
- 43.791 X 103kcal/hr = 183.3 x 103kJ/hr -43.791 X 10 3 kcal / hr = 183.3 x 10 3 kJ / hr
—④.絶乾紙料の顕熱は、 —④.
8.631 X 103kcal/hr = 36.1 x 103kJ/hr 8.631 X 10 3 kcal / hr = 36.1 x 10 3 kJ / hr
-⑤.紙料中水分の顕熱は、 -⑤.The sensible heat of moisture in the paper
1.442 103kcal/hr = 6.04 x 103kJ/hr 1.442 10 3 kcal / hr = 6.04 x 10 3 kJ / hr
③ .熱効率と蒸気原単位  ③. Thermal efficiency and steam intensity
ー①.水分蒸発に要する熱量よリ熱.効率を算出すると、 ー ①.Reheat from the amount of heat required for water evaporation.
(378.553 + 571.168) X 100=66.277%  (378.553 + 571.168) X 100 = 66.277%
(注記）  (Note)
なお、衝撃乾燥法との比較上ボイラー熱効率を 90% (重油ボイラーの場合ガスポ イラ一に比し S 分が高く熱回収ガス装置出口温度を高めにとる）として熱効率を 算出すると、ボイラー燃料発熱量は 634.63 lkcal/hr = 2657.1kJ/hrで、  The heat efficiency of the boiler was calculated as 90% (compared to the impact drying method) with the heat efficiency of the boiler as 90% (in the case of a heavy oil boiler, the S content is higher than the gas boiler and the outlet temperature of the heat recovery gas unit is higher). Is 634.63 lkcal / hr = 2657.1kJ / hr,
熱効率は 59.65%となる。 Thermal efficiency is 59.65%.
—②.絶乾紙料当たリ蒸気使用量は、 —②.
927.213 + 507.384 = 1.827kg/kg  927.213 + 507.384 = 1.827kg / kg
④ .紙 BD頓当リの所要熱量  ④ .Required heat of paper BD
段落 （0 1 6 1 ) 記載の實施例 1での 2 5 0 °Cの過熱水蒸気吹付け時と比較す る。前記従来の高圧容器乾燥筒での紙 BD頓当りの所要熱量は、 634.631 +0.507384 This is compared with the case of spraying superheated steam at 250 ° C in Example 1 described in paragraph (0 161). The amount of heat required per paper BD in the conventional high-pressure vessel drying cylinder is 634.631 +0.507384
= 1250.79 103kcal=5,236.81kJである。 2 5 0 °Cの過熱水蒸気吹付け時は 158.5 x= 1250.79 10 3 kcal = 5,236.81 kJ. 158.5 x when spraying superheated steam at 250 ° C
103kcal=663.61kJである。 従って所要熱量は約 1/7.9になる事が判明した。 10 3 kcal = 663.61 kJ. Therefore, the required heat was found to be about 1 / 7.9.
くく実施例 2》  Example 2
本発明の方法を実施した場合のシート状物質の製造方法で、 乾球温度 8 0 °C以 上で露点温度 6 0 °C以上の加熱湿り空気を使用する実施例として、 テス卜プラン 卜での実証結果と過熱水蒸気拘束衝撃乾燥装置の熱バランスの熱工学計算 （抄造 頓数 507.384 絶乾 BDkg/hr で蒸発水分量 619.057kg/hr) とにより絶対湿度； f = lkg/kg' DAでの熱バランス計算を記述する。衝撃フードノズル出口の高温高露点 空気条件は、温度を SHSと同温とし絶対湿度を 100%とした。 すなわち、 The method for producing a sheet-like substance when the method of the present invention is carried out, wherein the dry bulb temperature is 80 ° C or lower. As an example of using heated moist air with a dew point temperature of 60 ° C or higher, the results of a test plant test and thermal engineering calculation of the heat balance of a superheated steam-confined impact drying device (papermaking 507.384 absolutely dry BDkg f / lkg / kg 'DA to describe the heat balance calculation. The high temperature and high dew point air temperature at the outlet of the impact hood nozzle was the same as SHS, and the absolute humidity was 100%. That is,
t =250。C、 = 1.0kg/kg' DA、  t = 250. C, = 1.0kg / kg 'DA,
V = 〔0.4555 x (1+0.622) x (273.16+250)〕 /100  V = (0.4555 x (1 + 0.622) x (273.16 + 250)) / 100
=3.865m3/kg' DA、 = 3.865m 3 / kg 'DA,
i=(0.24 x 250)+ 〔(597.3+0.441 x 250)〕 x 1  i = (0.24 x 250) + [(597.3 + 0.441 x 250)] x 1
= 767.551ccal/kg' DA = 3213.6kJ/kg' DA  = 767.551ccal / kg 'DA = 3213.6kJ / kg' DA
となる。 It becomes.
相対湿度は 1.54%、湿球温度は 88.72°C、露点温度は 84.79°C (即ち本発明の請求範 囲内の一例）となる。  The relative humidity is 1.54%, the wet bulb temperature is 88.72 ° C, and the dew point temperature is 84.79 ° C (ie, an example within the scope of the present invention).
なお、 酸素濃度は 8.05%で火災の危険は無く消火機能を有する。  The oxygen concentration is 8.05% and there is no danger of fire and it has a fire extinguishing function.
なお、 空気の温度 t °Cと、 比体積 y mVkg' DAと、 比熱 i kcal/kg' DAとの算出 は以下によリ、  The calculation of the air temperature t ° C, the specific volume y mVkg 'DA, and the specific heat i kcal / kg' DA is as follows:
t= (i _ 597.3 ） ÷ (0.240 + 0.441 ）、  t = (i _ 597.3) ÷ (0.240 + 0.441),
=0.4555( +0.622)T/100、  = 0.4555 (+0.622) T / 100,
i=0.240t+(597.3 +0.441t) 、  i = 0.240t + (597.3 + 0.441t),
である。 It is.
衝撃ノズル及ぴサクシヨンファブリック区間のガス流量は、  The gas flow rate in the impact nozzle and suction fabric section is
全 2130.393m3/min, 551.201kg' DA/min、 2130.393m 3 / min, 551.201kg 'DA / min,
乾燥空気量が 33072.078kg' DA/hr、  Dry air volume is 33072.078kg 'DA / hr,
水蒸気も同量で 33072.078kg/hr、  33072.078kg / hr of the same amount of steam,
合計湿リ空気量が 66144.156kg/hr、 106，279.71kJ/hr、である。  The total wet air volume is 66144.156kg / hr and 106,279.71kJ / hr.
キヤノピーフード （Air Cap) 出口でシートより水分が蒸発し絶対湿度が増加 した高温湿り空気を大気中に排出する前 (給気混合前)の HA条件は、出熱を引き、 i = 〔(33072.078 X 767.55)—（10073 +25382+15,427)〕 ÷33072.078  The HA condition before the high-humidity air whose absolute humidity has increased due to the evaporation of moisture from the sheet at the outlet of the canopy hood (Air Cap) and before being discharged into the atmosphere (before air supply mixing) subtracts heat output and i = [( 33072.078 X 767.55)-(10073 + 25382 + 15,427)) ÷ 33072.078
= 766.01 lkcal/kg' - 3207.1kJ/kg' 、 t = 〔766.011— （597.3 X 1.019)〕 ÷ C0.24+(0.441 x 1.019)]= 766.01 lkcal / kg '-3207.1kJ / kg', t = [766.011— (597.3 X 1.019)] ÷ C0.24 + (0.441 x 1.019)]
= 228.267°C, = 228.267 ° C,
y = 0.4555(1.019+0.622)T/100  y = 0.4555 (1.019 + 0.622) T / 100
= 3.748m3/kg' DA、 = 3.748m 3 / kg 'DA,
X = 〔(2130.393/3.865) x 1.0 + 10.318〕 +551.201  X = [(2130.393 / 3.865) x 1.0 + 10.318] +551.201
= 1.019kg/kg' 、  = 1.019kg / kg ',
循環熱交換器前で排気後 &給気混合後の HA条件は、  HA conditions after exhausting and mixing air supply before the circulation heat exchanger
i = C(33072.078-(10073+25382+15427)) x 753.575+(622.481 X 22.6)]  i = C (33072.078- (10073 + 25382 + 15427)) x 753.575+ (622.481 X 22.6)]
+ 33072駕  + 33072
= 766.01 lkcal/kg = 3,207.13kJ/kg  = 766.01 lkcal / kg = 3,207.13kJ / kg
t = 〔766.011— (597.3 x 1.0)〕 ÷ [0.24+(0.441 1.0)]  t = [766.011— (597.3 x 1.0)] ÷ [0.24+ (0.441 1.0)]
= 228.267、  = 228.267,
V = 0.4555(1.0 + 0.622)17100  V = 0.4555 (1.0 + 0.622) 17100
= 3.748m3/kg' DA = 3.748m 3 / kg 'DA
したがって所定の給排気完了後の循環高温高露点空気熱交での所要加熱量は、 33,072.078 x (767.55— 752.019)  Therefore, the required heating quantity in the circulating high-temperature high-dew point air heat exchange after completion of the specified air supply and exhaust is 33,072.078 x (767.55—752.019)
= 513.642 X 103kcal/hr = 2150.5 X 103kJ/hrである。 A = 513.642 X 10 3 kcal / hr = 2150.5 X 10 3 kJ / hr.
なお、 絶乾 (BD)kg当リでは、 1012.334 kcal/kg = 4238.4kJ/kg (実施例 1の SHS に比し 1 0 9 . 7 %) である。  In addition, the absolute dry weight (BD) kg is 1012.334 kcal / kg = 4238.4 kJ / kg (109.7% compared to the SHS of Example 1).
また、 蒸発水分 kg当リでは、 829.717 kcal/kg = 3473.9kJ hrである。  In the case of kg of evaporated water, 829.717 kcal / kg = 3473.9 kJ hr.
• なお、 上記の計算結果を熱効率で表示すると以下のとおりである。 • The above calculation results are shown below in terms of thermal efficiency.
① .入熱  ①. Heat input
ボイラー燃料発熱量は、以下の出熱を合計し、 The boiler fuel calorific value is the sum of the following heat output,
545.599 103kcal/hi- = 2284.3kJ/kg 545.599 10 3 kcal / hi- = 2284.3kJ / kg
② .出熱  ②.
—①.フード排気の持ち去リ顕熱 (排気温度 228.267°C&外気 32°C基準)は、 622.481 x —①. The sensible heat of the hood exhaust (exhaust temperature 228.267 ° C & outside air 32 ° C standard) is 622.481 x
(766.011― 22.6) = 462.759 x 103kcal/hr ( = 1925.1 103kJ/hr) フ一ド排気と給気との 熱交 (Eco)を設置すれば、排気損熱の削減可能だが、給気の絶対湿度が低くェンタ ルビー値も低いので回収熱量は少ない。 白水加熱が有利だが抄造品種によリ対応 が異なるので、本熱工学計算では省略する。 (766.011-22.6) = 462.759 x 10 3 kcal / hr (= 1925.1 10 3 kJ / hr) If heat exchange (Eco) between the hood exhaust and air supply is installed, exhaust heat loss can be reduced, but Since the absolute humidity of air is low and the enthalby value is low, the amount of recovered heat is small. White water heating is advantageous, but depending on the papermaking variety Are omitted in this thermal engineering calculation.
ー②.ボイラーの排ガス顕熱 (外気 32°C基準)は、 ー ②.Boiler exhaust gas sensible heat (outside air 32 ° C standard)
474.129kcal/Nm3 x 54.834Nm3/hr 474.129kcal / Nm 3 x 54.834Nm 3 / hr
= 25.998 x l03kcal/hr = 25.998 x l0 3 kcal / hr
= 108.8 x 103kJ/hr = 108.8 x 10 3 kJ / hr
ー③.ボイラーの不完全燃焼損熱は、 ー ③.Boiler incomplete combustion heat loss
0.788kcal/Nm3 x 54.834Nm3/hr 0.788kcal / Nm 3 x 54.834Nm 3 / hr
= 0.043 x 103kcal/hr = 0.043 x 10 3 kcal / hr
= 0.180 x 103kJ/lir = 0.180 x 10 3 kJ / lir
—④.ボイラー単体での輻射伝導他損熱は、 —④. Radiation conduction and other heat loss in the boiler alone
5.917 X 103kcal/hr 5.917 X 10 3 kcal / hr
= 24.8 X 103kJ/hi- —⑤.抄紙機フ一ド &ダクト他での損熱は、 = 24.8 X 10 3 kJ / hi- ⑤.
25.382 X 103kcal/hr 25.382 X 10 3 kcal / hr
= 106.3 x l 03kJ/hr = 106.3 xl 0 3 kJ / hr
ー⑥.抄紙機フード出入り口での紙料顕熱差は、 ー ⑥. The difference in the sensible heat of the paper
8.631 X 103kcal/hr 8.631 X 10 3 kcal / hr
= 36.1 X 103kJ/hr = 36.1 X 10 3 kJ / hr
ー⑦.抄紙機フード出入り口での水分顕熱差は、 ー ⑦.The difference in sensible moisture at the paper machine hood doorway is
1 .442 x l03kcal/hi- = 6.04 lO]kJ/hr 1 .442 x l0 3 kcal / hi- = 6.04 lO ] kJ / hr
—⑧.その他損熱は、 —⑧. Other heat loss
15.427 X 10jkcal/hr 15.427 X 10 j kcal / hr
= 64.6 103kJ/hr = 64.6 10 3 kJ / hr
③.熱効率一従って熱交率は、 ③. Thermal efficiency and therefore heat exchange rate
378.553 ÷545.599 = 69.38%  378.553 ÷ 545.599 = 69.38%
《実施例 3》 << Example 3 >>
本発明の方法を実施した場合のシート状物質の製造方法で、 乾球温度 8 0 °C以 上で露点温度 6 0 °C以上の加熱湿り空気を使用する実施例として、 テス卜プラン 卜での実証結果と過熱水蒸気拘束衝撃乾燥装置の熱バランスの熱工学計算 （絶乾 BDkg抄造頓数 507.384kg/hr で蒸発水分量 619.057kg/hr) とにより絶対湿度 = 0.25kg/kg' DA での熱バランス計算を記述する。 衝撃フードのノズル出口での高 温高露点空気条件は、温度を SHSと同温とし絶対湿度を 25%とした。即ち t=250°C、In the method for producing a sheet-like substance when the method of the present invention is carried out, a test plan is used as an example in which heated wet air having a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more is used. The absolute humidity = 0.25 kg / kg 'DA based on the results of the experiments on the heat balance and the thermal engineering calculation of the heat balance of the superheated steam confined impact drying unit (evaporated water amount 619.057 kg / hr at 507.384 kg / hr of absolutely dry BDkg). Describe the heat balance calculation in. The high temperature and high dew point air conditions at the nozzle outlet of the impact hood were the same temperature as SHS and the absolute humidity was 25%. That is, t = 250 ° C,
X =0.25kg/kg' DA、 V = CO.4555 x (0.25+0.622) x (273.16+250)] /100=2.078m3/kg' DA、 i=(0.24 X 250)+〔(597.3+0.441 x 250)〕 x 0.25=236.888kcal/kg' DA=991.8kj/kg' DAとなる。 相対湿度は 0.72%、湿球温度は 74.16°C、露点温度 67.66°C (即ち本発明 の請求範囲内の一例)である。 なお、 酸素濃度は 14.98%で消火機能は無い。 X = 0.25kg / kg 'DA, V = CO.4555 x (0.25 + 0.622) x (273.16 + 250)] /100=2.078m 3 / kg' DA, i = (0.24 X 250) + [(597.3Tasu 0.441 x 250)] x 0.25 = 236.888 kcal / kg 'DA = 991.8 kj / kg' DA. The relative humidity is 0.72%, the wet bulb temperature is 74.16 ° C, and the dew point temperature is 67.66 ° C (that is, an example within the scope of the present invention). The oxygen concentration is 14.98% and there is no fire extinguishing function.
衝撃ノズル及びサクシヨンフアブリック区間のガス流量は、  The gas flow rate of the impact nozzle and the suction fabric section is
全 2,130.393m3/min, 1025.213kg' DA/min、 2,130.393m 3 / min, 1025.213kg 'DA / min,
乾燥空気量が 61512.791kg' DA/hr、  Dry air volume is 61512.791 kg 'DA / hr,
水蒸気は 15378.198kg/hr、  Water vapor is 15378.198kg / hr,
合計湿リ空気量が 76890.989kg/hr、 106,279.7 lkJ/hr = 61,008.55xl03kJ/hr である。 The total wet air volume is 76890.989 kg / hr, 106,279.7 lkJ / hr = 61,008.55xl0 3 kJ / hr.
キヤノピーフード （Air Cap) 出口でシートよリ水分が蒸発し絶対湿度が増加し た湿り空気を大気中に排出する前 (給気混合前)の HA 条件は、出熱 (2 - 2 - 1)を引 さ  At the outlet of the canopy hood (Air Cap), the HA condition before the humid air whose absolute humidity has increased due to the evaporation of moisture from the sheet at the outlet (before air supply mixing) is the heat output (2-2-1 )
i = 〔(61512.791 X 236.888)— (10073+25382+24052)〕 ÷61512.791  i = ((61512.791 X 236.888)-(10073 + 25382 + 24052)) ÷ 61512.791
= 235.921kcal/kg' DA  = 235.921kcal / kg 'DA
= 987.75kJ/kg' DA、  = 987.75kJ / kg 'DA,
t = 〔235.921— (597.3 X 0.260064) ] ÷ C0.24+(0.441 x 0.260064)]  t = [235.921— (597.3 X 0.260064)] ÷ C0.24 + (0.441 x 0.260064)]
= 227.199°C、  = 227.199 ° C,
V = 0.4555(0.260064 +0.622)T/100
Figure imgf000075_0001
V = 0.4555 (0.260064 +0.622) T / 100
Figure imgf000075_0001
X = (1,025.213 x 0.25 + 10.31762) ÷ 1 ,025.213  X = (1,025.213 x 0.25 + 10.31762) ÷ 1,025.213
= 0.260064kg/kg' 、  = 0.260064kg / kg ',
循環熱交換器前で排気後 &給気混合後の HA条件は、  HA conditions after exhausting and mixing air supply before the circulation heat exchanger
i = [(61512.791 -2627.978) x 235.921 +(2627.978 x 22.6)] ÷61512.791  i = [(61512.791 -2627.978) x 235.921 + (2627.978 x 22.6)] ÷ 61512.791
= 226.807kcal/kg' DA = 949.6 kJ/kg' DA、 = 226.807kcal / kg 'DA = 949.6 kJ / kg 'DA,
t = 〔226.807— (597.3 X 0.25)〕 ÷(0.24+0.441 x 0. 25)  t = [226.807— (597.3 X 0.25)] ÷ (0.24 + 0.441 x 0.25)
= 221.219°C、  = 221.219 ° C,
V = 0.4555(0.25 +0.622)17100  V = 0.4555 (0.25 +0.622) 17100
= 1.964m3/kg' DA。 = 1.964m 3 / kg 'DA.
したがって所定の給排気完了後の循環高温高露点空気熱交での所要加熱量は、 61512.791 (236.888—226.807)  Therefore, the required heating amount in the circulating high-temperature high-dew point air heat exchange after completion of the specified air supply and exhaust is 61512.791 (236.888—226.807).
= 620.110 X 103kcal/hi- = 2596.3 X 103kJ/hr = 620.110 X 10 3 kcal / hi- = 2596.3 X 10 3 kJ / hr
で る。  Out.
なお、 絶乾 (BD)kg当りでは、 1222.171 kcal/kg =5,116.99kJ/kg (実施例 1の SHS に比し 1 3 2 . 4 <½) である。 また、 蒸発水分 kg 当りでは、 1001.701 kcal/kg = 4193.9kJ/hrで  In addition, it is 1222.171 kcal / kg = 5,116.99 kJ / kg (132.4 <½ in comparison with SHS of Example 1) per kg of absolutely dry (BD). Also, per kg of evaporated water, 1001.701 kcal / kg = 4193.9 kJ / hr
ある。 is there.
なお、 上記の計算結果を熱効率で表示すると以下のとおりである。  The above calculation results are shown below in terms of thermal efficiency.
① .入熱  ①. Heat input
ボイラー燃料発熱量は、以下の出熱を合計すると、  The boiler fuel calorific value is the sum of the following heat output:
657.405kcal/hr = 2752.4kJ/hr  657.405kcal / hr = 2752.4kJ / hr
② .出熱  ②.
—①.フード排気の持ち去リ顕熱 (外気 32°C基準)は、  —①. The sensible heat (based on 32 ° C outside air) of the hood exhaust
2,627.978 X (235.921 -22.6)  2,627.978 X (235.921 -22.6)
= 560.603 103kcal/hr = 560.603 10 3 kcal / hr
= 2347.1 >< 103kJ/hr = 2347.1><10 3 kJ / hr
ー②.ボイラーの排気ガス顕熱 (外気 32°G基準)は、 ー ②.Boiler exhaust gas sensible heat (outside air 32 ° G standard)
474.129kcal/Nm3 X 66.07 INmVhr474.129kcal / Nm 3 X 66.07 INmVhr
Figure imgf000076_0001
Figure imgf000076_0001
= 131.2 x l 03kJ/hr = 131.2 xl 0 3 kJ / hr
ー③.ボイラーの不完全燃焼損熱は、 ー ③.Boiler incomplete combustion heat loss
0.788kcal/Nm3 x 66.071Nm3/hr = 0.052 x 103kcal/hr 0.788kcal / Nm 3 x 66.071Nm 3 / hr = 0.052 x 10 3 kcal / hr
= 0.22 x 103kJ/hr = 0.22 x 10 3 kJ / hr
—④.ボイラー単体での輻射伝導他損熱は、  —④. Radiation conduction and other heat loss in the boiler alone
5.917 X 103kcal/hr 5.917 X 10 3 kcal / hr
= 24.8 x 103kJ/ r = 24.8 x 10 3 kJ / r
ー⑤.抄紙機フード &ダク ト他での損熱は、 ー ⑤.Heat loss in paper machine hoods and ducts
25.382 X 103kcal/hr 25.382 X 10 3 kcal / hr
= 106.3 l03kJ/hx = 106.3 l0 3 kJ / hx
ー⑥.抄紙機フード出入リ口での紙料顕熱差は、 ー ⑥.The difference in the sensible heat of the paper
8.631 103lccal/hr 8.631 10 3 lccal / hr
= 36.1 x i03kJ/hr = 36.1 x i0 3 kJ / hr
ー⑦.抄紙機フ一ド出入り口での水分顕熱差は、 ー ⑦. The difference in moisture sensible heat at the entrance and exit of the paper machine
1 .442 x 103kcal hr 1 .442 x 10 3 kcal hr
= 6.04 x l03kJ/lu = 6.04 x l0 3 kJ / lu
—⑧.その他損熱は、 —⑧. Other heat loss
24.052 X 103kcal/hr 24.052 X 10 3 kcal / hr
= 100.7 X 103kJ/hr = 100.7 X 10 3 kJ / hr
③.熱効率一従って熱交率は、 ③. Thermal efficiency and therefore heat exchange rate
378.553 ÷657.405 = 57.58%  378.553 ÷ 657.405 = 57.58%
《実施例 4》  << Example 4 >>
本発明の方法を実施した場合のシート状物質の製造方法で、 乾球温度 8 0 °C以 上で露点温度 6 0 °C以上の加熱湿り空気を使用する実施例として、 テス卜プラン 卜での実証結果と過熱水蒸気拘束衝撃乾燥装置の熱バランスの熱工学計算 （絶乾 BDkg 抄造頓数 507.3841 /hr で蒸発水分量 619.057kg/hr) とにより絶対湿度 = 0.05kg/kg' AD での熱/《ランス計算を記述する。 衝撃フードのノズル出口での高 温高露点空気条件は、温度を SHSと同温とし絶対湿度を 5.0%とした。 すなわち、 t - 250°CN In a method for producing a sheet-like substance when the method of the present invention is carried out, an example of using heated humid air having a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more is described in a test plant. Of the heat balance of the superheated steam-confined impact drying apparatus and the thermal balance (absolutely dried BDkg, the amount of evaporating water at 507.3841 / hr and the amount of evaporated water at 619.057 kg / hr), the absolute humidity = 0.05 kg / kg 'AD / << Write the lance calculation. As for the high temperature and high dew point air conditions at the nozzle outlet of the impact hood, the temperature was the same as SHS and the absolute humidity was 5.0%. That is, t-250 ° C N
X = 0.05kg/kg' DA、  X = 0.05kg / kg 'DA,
V = 〔0.4555 x (0.05+0.622) x (773.15+250)〕 /100 = 1.601m3/kg' DA、 V = (0.4555 x (0.05 + 0.622) x (773.15 + 250)) / 100 = 1.601m 3 / kg 'DA,
i - (0.24 x 250)+ 〔(597.3+0.441 x 250)〕 x 0.05  i-(0.24 x 250) + ((597.3 + 0.441 x 250)) x 0.05
= 95.378kcal/kg' DA = 399.3kJ/kg' DA、  = 95.378kcal / kg 'DA = 399.3kJ / kg' DA,
となる。 It becomes.
相対湿度は 0.19%、湿球温度は 58.42°C、露点温度は 40.49°C (即ち本発明の請求範 囲外の一例)である。 なお、 酸素濃度は 19.44%で火災の危険が有る。  The relative humidity is 0.19%, the wet bulb temperature is 58.42 ° C, and the dew point temperature is 40.49 ° C (ie, an example outside the scope of the present invention). The oxygen concentration is 19.44% and there is a danger of fire.
衝撃ノズル及びサクシヨンファブリック区間のガス流量は、  The gas flow rate of the impact nozzle and the suction fabric section is
全 2130.393m3/min、 1330.664kg' DA/minN Total 2130.393m3 / min, 1330.664kg 'DA / min N
乾燥空気量が 79839.838kg' DA/hr、  79839.838kg 'DA / hr of dry air volume,
水蒸気は 3991.992kg/hr、  The steam is 3991.992kg / hr,
合計湿リ空気量が 83831.830kg/hr、 7614.964 X 103kcal/hr =31,882.33xl03kJ/hr で める。 Mel total moist air amount 83831.830kg / hr, at 7614.964 X 10 3 kcal / hr = 31,882.33xl0 3 kJ / hr.
キヤノピーフード （Air Cap) 出口でシートよリ水分が蒸発し絶対湿度が増加し た湿り空気を大気中に排出する前 (給気混合前)の HA 条件は、出熱 (2 - 2 - 1)を引 さ  At the outlet of the canopy hood (Air Cap), the HA condition before the humid air whose absolute humidity has increased due to the evaporation of moisture from the sheet at the outlet (before air supply mixing) is the heat output (2-2-1 )
i = 〔(79839.838 X 95.378)— (10073+25382+33740)〕 ÷79839.838  i = [(79839.838 X 95.378)-(10073 + 25382 + 33740)] ÷ 79839.838
= 94.511kcal/kg' DA  = 94.511kcal / kg 'DA
= 395.70kJ/kg' DA、  = 395.70kJ / kg 'DA,
t = 〔94.511— (597.3 X 0.057754) ] ÷(0.24+0.441 x 0.057754)  t = [94.511— (597.3 X 0.057754)] ÷ (0.24 + 0.441 x 0.057754)
= 226.069°C  = 226.069 ° C
V = 0.4555(0.057754+0.622)T/100  V = 0.4555 (0.057754 + 0.622) T / 100
= 1.546mJ/kg' DA、 = 1.546m J / kg 'DA,
X = (1330.664 0.05 + 10.318)÷ 1330.664  X = (1330.664 0.05 + 10.318) ÷ 1330.664
= 0.057754kg/kg' 、  = 0.057754kg / kg ',
循環熱交換器前で排気後 &給気混合後の HA条件は、  HA conditions after exhausting and mixing air supply before the circulation heat exchanger
i = 〔79839.838— 18616.017〕 x 94.511 +(18616.017 x 22.6)] ÷ 79839.838 = 77.744kcal/kg' DA  i = [79839.838-18616.017] x 94.511 + (18616.017 x 22.6)] ÷ 79839.838 = 77.744kcal / kg 'DA
= 325.5kJ/kg' DA、  = 325.5kJ / kg 'DA,
t = 〔77.744— (597.3 X 0.05)〕 ÷ (0.24+ 0.441 x 0.05) = 182.70。 C、 t = [77.744— (597.3 X 0.05)] ÷ (0.24+ 0.441 x 0.05) = 182.70. C,
V = 0.4555(0.05 +0.622)T/100  V = 0.4555 (0.05 +0.622) T / 100
= 1.395m3/kg' DA。 = 1.395m 3 / kg 'DA.
したがつて所定の給排気完了後の循環高温高露点空気熱交での所要加熱量は、 Therefore, the required heating amount in the circulating high temperature and high dew point air heat exchange after completion of the specified air supply and exhaust,
79839.838 x (95.378-77.744) 79839.838 x (95.378-77.744)
= 1407.896 X 103kcal/ lir = 1407.896 X 10 3 kcal / lir
= 5894.6 x 10JkJ/hr = 5894.6 x 10 J kJ / hr
である。  It is.
なお、 絶乾 (BD)kg当りでは、 2774.814 kcal/kg (実施例 1の SHS に比し 3 0 0 7 %) である。 又蒸発水分 kg当リでは、 2274.259 kcal/kg=9,510.04 kJ/kgである。 なお、 上記の計算結果を熱効率で表示すると以下のとおりである。  In addition, it was 2774.814 kcal / kg (307% compared to SHS of Example 1) per kg of absolutely dry (BD). In the case of kg of evaporated water, 2274.259 kcal / kg = 9,510.04 kJ / kg. The above calculation results are shown below in terms of thermal efficiency.
① .入熱  ①. Heat input
—①.ボイラー燃料発熱量は、以下の出熱を合計すると、  —①. The calorific value of the boiler fuel is
1484.673 X 103kcal/hr = 6216.03 x 10 J/hr 1484.673 X 10 3 kcal / hr = 6216.03 x 10 J / hr
② .出熱  ②.
ー①.フード排気の持ち去り顕熱 (外気 32°C基準)は、 ー ①.The sensible heat removed from the hood exhaust (at 32 ° C outside air)
18616.017 X (94.511 -22.6)  18616.017 X (94.511 -22.6)
- 1338.696 X 103kcal/hr -1338.696 X 10 3 kcal / hr
= 5604.8 X 103kJ/hr = 5604.8 X 10 3 kJ / hr
-②.ボイラーの排気ガス顕熱 (外気 32°C基準)は、 -②.The boiler exhaust gas sensible heat (outside air 32 ° C standard)
474.129kcal/Nm3 x 149.214Nm3/hr 474.129kcal / Nm 3 x 149.214Nm 3 / hr
= 70.747 x 103kcal/hr = 70.747 x 10 3 kcal / hr
= 296.2 x 103kJ/hr = 296.2 x 10 3 kJ / hr
—③,ボイラーの不完全燃焼損熱は、 —③, boiler incomplete combustion heat loss is
0.788kcal/Nm] x 149.214Nm3/hr 0.788kcal / Nm ] x 149.214Nm 3 / hr
= 0.118 x 10¾ cal/hr  = 0.118 x 10¾ cal / hr
= 0.49 x l03kJ/hr = 0.49 x l0 3 kJ / hr
ー④.ボイラ一単体での輻射伝導他損熱は、 ー ④. Radiation conduction and other heat loss of the boiler alone
5.917 X I 0Jkcal/hr - 24.8 X 103kJ/hi- ー⑤.抄紙機フード &ダク 卜他での損熱は、5.917 XI 0 J kcal / hr -24.8 X 10 3 kJ / hi-⑤.Heat loss in paper machine hoods and ducts is
Figure imgf000080_0001
Figure imgf000080_0001
= 106.3 X I 03kJ/hr = 106.3 XI 0 3 kJ / hr
ー⑥.抄紙機フ一ド出入り口での紙料顕熱差は、 ー ⑥. The difference in the sensible heat of paper at the entrance and exit of the paper machine
8.631 X 103kcal/hr 8.631 X 10 3 kcal / hr
= 36.1 X 103kJ/hr = 36.1 X 10 3 kJ / hr
—⑦.抄紙機フード出入り口での水分顕熱差は、 —⑦. Moisture sensible heat difference at the entrance and exit of the paper machine hood
1 .442 X 10Jkcal/hr 1 .442 X 10 J kcal / hr
= 6.04 x 103kJ/lir = 6.04 x 10 3 kJ / lir
—⑧.その他損熱は、 —⑧. Other heat loss
33.740 X 10Jkcal/hr 33.740 X 10 J kcal / hr
= 141.3 X 103kJ/hr = 141.3 X 10 3 kJ / hr
③.熱効率 ③. Thermal efficiency
従って熱交率は、  Therefore, the heat exchange rate is
378.553 ÷ 1,484.673 =25.50%  378.553 ÷ 1,484.673 = 25.50%
《実施例 5 »  << Example 5 »
本発明の方法を実施した場合のシ一卜状物質の製造方法で、 乾球温度 8 0 °C以 上で露点温度 6 0 °C以上の加熱湿り空気を使用する実施例として、 テス卜プラン トでの実証結果と過熱水蒸気拘束衝撃乾燥装置の熱バランスの熱工学計算 （絶乾 BDkg抄造頓数 507.384kg/hr で蒸発水分量 619.057kg/hr) とにより絶対湿度 = 0.025kg/kg' DAでの熱バランス計算を記述する。 衝撃フードのノズル出口での高 温高露点空気条件は、温度を SHSと同温とし絶対湿度を 2.5%とした。 すなわち、 t = 250°G、  In a method for producing a sheet-like substance when the method of the present invention is carried out, a test plan was used as an example in which heated wet air having a dry bulb temperature of 80 ° C or more and a dew point temperature of 60 ° C or more was used. Humidity = 0.025kg / kg 'DA Describe the heat balance calculation in. The high temperature and high dew point air conditions at the nozzle outlet of the impact hood were the same temperature as SHS and the absolute humidity was 2.5%. That is, t = 250 ° G,
X = 0.025kg/kg' DA、  X = 0.025kg / kg 'DA,
V = C0.4555 x (0.025+0.622) x (273.16+250)] /100  V = C0.4555 x (0.025 + 0.622) x (273.16 + 250)] / 100
= 1.542m3/kg' DA、 = 1.542m 3 / kg 'DA,
i = (0.24 x 250)+ [(597.3+0.441 x 250)3 0.025  i = (0.24 x 250) + [(597.3 + 0.441 x 250) 3 0.025
= 77.689kcal/kg， DA - 325.3kJ/kg' DA、 = 77.689kcal / kg, DA -325.3kJ / kg 'DA,
となる。 相対湿度は 0.097%、湿球温度は 54.56°C、露点温度は 28.65°C (即ち本発明 の請求範囲外の一例)である。 なお、 酸素濃度は 20.19%で火災の危険が有る。 衝撃ノズル及びサクションフアブリック区間のガス流量は、 It becomes. The relative humidity is 0.097%, the wet bulb temperature is 54.56 ° C, and the dew point temperature is 28.65 ° C (ie, an example outside the scope of the present invention). The oxygen concentration is 20.19% and there is a danger of fire. The gas flow rate of the impact nozzle and the suction fabric section is
全 2130.393m3/min、 1381.578kg' DA/mins Total 2130.393m 3 / min, 1381.578kg 'DA / min s
乾燥空気量が 82894.669kg' DA/hr、  Dry air volume is 82894.669kg 'DA / hr,
水蒸気は 2072.367kg/hr、  Water vapor is 2072.367kg / hr,
合計湿リ空気量が 84967.036kg/hr、 6440.004 103kcal/hr = 26,963.3 l x l03kJ/kg である。 Total humid air amount 84967.036kg / hr, a 6440.004 10 3 kcal / hr = 26,963.3 lx l0 3 kJ / kg.
キヤノピーフード （Air Cap) 出口でシートより水分が蒸発し絶対湿度が増加し た湿り空気を大気中に排出する前 (給気混合前)の HA 条件は、出熱 (2 - 2 - 1)を引 き  The HA condition before the humid air whose absolute humidity has increased due to evaporation of moisture from the sheet at the outlet of the canopy hood (Air Cap) and before being discharged into the atmosphere (before supply air mixing) is heat output (2-2-1) Pull
i = 〔(82967.036 X 77.689)— (10073+25382+38124)〕 ÷ 82,967.036  i = [(82967.036 X 77.689)-(10073 + 25382 + 38124)] ÷ 82,967.036
= 76.801kcal/kg' DA、  = 76.801kcal / kg 'DA,
=321.6kJ/kg' DA,  = 321.6kJ / kg 'DA,
t = 〔76.801— (597.3 X 0.032468) ] ÷ (0.24 + 0.441 x 0.032468)  t = [76.801— (597.3 X 0.032468)] ÷ (0.24 + 0.441 x 0.032468)
= 225.732°C、  = 225.732 ° C,
V - 0.4555(0.032468 +0.622)T/100  V-0.4555 (0.032468 +0.622) T / 100
= 1.487m3/kg' DA、 = 1.487m 3 / kg 'DA,
X = (1381.578 x 0.025 + 10.318)+ 1381.578  X = (1381.578 x 0.025 + 10.318) + 1381.578
= 0.032468kg/kg' 、  = 0.032468kg / kg ',
循環熱交換器前で排気後 &給気混合後の HA条件は、 HA conditions after exhausting and mixing air supply before the circulation heat exchanger
i = 〔( 948.462— 77741,684) x 71.856 + (77741.684 x 22.6)] ÷ 82894.669 i = [(948.462—77741,684) x 71.856 + (77741.684 x 22.6)] ÷ 82894.669
= 26.00 lkcal/kg' DA = 26.00 lkcal / kg 'DA
= 108.9kJ/kg' DA、  = 108.9kJ / kg 'DA,
t = [26.001 -(597.3 0.025)] ÷ (0.24 + 0.441 x 0.025)  t = [26.001-(597.3 0.025)] ÷ (0.24 + 0.441 x 0.025)
- 44.093°CN -44.093 ° C N
V = 0.4555(0.025 + 0.622)T/100  V = 0.4555 (0.025 + 0.622) T / 100
= 0.935mVkg' DA。 したがって所定の給排気完了後の循環高温高露点空気熱交での所要加熱量は、 82894.669 x (77.689—26.001) = 0.935mVkg 'DA. Therefore, the required heating amount in the circulating high temperature and high dew point air heat exchange after completion of the specified air supply and exhaust is 82894.669 x (77.689—26.001)
= 4284.660 X 103kcal/ hr = 4284.660 X 10 3 kcal / hr
= 17939.0 x 103kJ/hr, = 17939.0 x 10 3 kJ / hr,
である。  It is.
なお、 絶乾 (BD)kg当りでは、 8444.610 kcal/kg (実施例 1の SHS に比し 9 1 5 . 1 %) である。 また、 蒸発水分 kg当リでは、 6921.269 kcal/kg=28792.5kcal/kgであ る。  In addition, it is 8444.610 kcal / kg (9.15.1% compared to SHS of Example 1) per kg of absolutely dry (BD). In addition, the equivalent of 6921.269 kcal / kg = 28792.5 kcal / kg for kg of evaporated water.
なお、 上記の計算結果を熱効率で表示すると以下のとおリである。  When the above calculation results are expressed in terms of thermal efficiency, it is as follows.
① .入熱  ①. Heat input
ボイラー燃料発熱量は、以下の出熱を合計すると、  The boiler fuel calorific value is the sum of the following heat output:
4505.584 X 103kcal/hr 4505.584 X 10 3 kcal / hr
= 18864.0 X 103kJ/hr = 18864.0 X 10 3 kJ / hr
② .出熱  ②.
—①.フ一ド排気の持ち去リ顕熱 (外気 32°G基準)は、  —①. The sensible heat taken out of the hood exhaust (based on 32 ° G outside air)
77692.901 x (76.801 -22.6)  77692.901 x (76.801 -22.6)
= 4211.033 X I 03kcal/hr = 4211.033 XI 0 3 kcal / hr
= 17630.8 x i03kJ/hr = 17630.8 x i0 3 kJ / hr
—②.ボイラーの排気ガス顕熱 (外気 32°C基準)は、 —②.The boiler's exhaust gas sensible heat (outside air 32 ° C standard)
474.129kcal/Nm3 x 452.827Nm3/hr 474.129kcal / Nm 3 x 452.827Nm 3 / hr
= 214.698 x 103kcal/lir = 214.698 x 10 3 kcal / lir
= 898.9 103kJ/hr = 898.9 10 3 kJ / hr
ー③.ボイラーの不完全燃焼損熱は、 ー ③.Boiler incomplete combustion heat loss
0.788kcal/Mm3 x 452.827Nm3/hr 0.788kcal / Mm 3 x 452.827Nm 3 / hr
= 0.357 103kcal/hr = 0.357 10 3 kcal / hr
= 1.49 103kJ/hr = 1.49 10 3 kJ / hr
—④.ボイラー単体での輻射伝導他損熱は、—④. Radiation conduction and other heat loss in the boiler alone
Figure imgf000082_0001
Figure imgf000082_0001
^ ^S X 103kJ/hr ー⑤.抄紙機フード &ダク ト他での損熱は、 ^ ^ SX 10 3 kJ / hr ー ⑤.Heat loss in paper machine hoods and ducts
25.382 X 103kcal/lir 25.382 X 10 3 kcal / lir
= 106.3 X 103kJ/hr = 106.3 X 10 3 kJ / hr
ー⑥.抄紙機フード出入り口での紙料顕熱差は、 ー ⑥. The difference in the sensible heat of the paper
8.631 103kcal/ r 8.631 10 3 kcal / r
= 36.1 X 103k.T/hr = 36.1 X 10 3 kT / hr
ー⑦.抄紙機フード出入り口での水分顕熱差は、 ー ⑦.The difference in sensible moisture at the paper machine hood doorway is
1 .442 X 103kcal/hr1 .442 X 10 3 kcal / hr
Figure imgf000083_0001
Figure imgf000083_0001
—⑧.その他損熱は、 —⑧. Other heat loss
38.124 X 103kcal/hr 38.124 X 10 3 kcal / hr
= 159.6 X 103kJ/hr = 159.6 X 10 3 kJ / hr
③.熱効率一従って熱交率は、 ③. Thermal efficiency and therefore heat exchange rate
378.553 ÷4,505.584=8.40%  378.553 ÷ 4,505.584 = 8.40%
以上、 実施例 2〜実施例 5までとその他の結果を図 2 4に Y軸を熱交換器の所 要熱量 KJ/BDkgPaperとし， X軸を絶対湿度 . G/Kg' DAとして示す。 また、 図 3 5に Y軸を熱効率％とし、 X軸を絶対湿度 . G/Kg' DAとして示す。  The results of Examples 2 to 5 and other results are shown in Fig. 24. The Y axis is the required heat of the heat exchanger, KJ / BDkgPaper, and the X axis is the absolute humidity, G / Kg'DA. Figure 35 shows the thermal efficiency% on the Y-axis and the absolute humidity. G / Kg 'DA on the X-axis.
なお、 通常各製紙工場で行う熱精算では、 入熱として内部加熱シリンダへの供 給蒸気を基準にとるが、本計算ではボイラー熱効率を 90%と仮定して燃料発熱量 を基準に比較した。 もちろん、 過熱水蒸気が一番所要熱量が少なく、 熱効率も 76.03%と高く、 更に余剰過熱水蒸気を有効利用可能だが、 高温高湿度湿り空気の 場合でも絶対湿度を例えばズ = 1 0 0 kg/kg' DA (露点温度 9 6 .1°C)に高めれば、 循環高温高露点空気熱交での所要加熱量は、  In addition, in the heat accounting usually performed in each paper mill, the heat input is based on the steam supplied to the internal heating cylinder, but in this calculation, the boiler thermal efficiency is assumed to be 90% and the comparison is based on the fuel calorific value. Of course, superheated steam requires the least amount of heat, the thermal efficiency is as high as 76.03%, and surplus superheated steam can be used effectively.However, even in the case of high-temperature, high-humidity humid air, the absolute humidity can be reduced to, for example, 100 kg / kg '. If the temperature is increased to DA (dew point temperature 96.1 ° C), the required heating amount in circulating high temperature and high dew point air heat exchange is
944.98kal/BdkgPaper, 3956,41d/BDkgPaper (実施例 1 の 1 0 2 . 4 %)に成リ熱効率も 73.86%と非常に高い。  944.98kal / BdkgPaper, 3956,41d / BDkgPaper (102.4% in Example 1) also has a very high heat generation efficiency of 73.86%.
猶従来抄紙機乾燥部の熱効率計算方法は、 損熱であるシート中水分の蒸発潜熱 を有効熱とし、 是を全入熱又は全出熱で除して熱効率としていたが、 本発明の如 くシート中水分からの全蒸発水蒸気量を其の烬回収して、 過熱水蒸気として利用 する時は、 乾燥機ではなく蒸気発生器としての熱効率、 即ち回収水蒸気顕熱を全 入熱又は全出熱で除して蒸気発生器としての熱効率を提示するべきであるが、 今 後乾燥工学関係の学会で提議したい。 The conventional method of calculating the thermal efficiency of the drying section of a paper machine was to use the latent heat of vaporization of moisture in the sheet, which is the heat loss, as the effective heat, and divided it by the total heat input or the total heat output to obtain the thermal efficiency. When the total amount of evaporated water vapor from the water in the sheet is recovered and used as superheated steam, the heat efficiency as a steam generator, not a dryer, that is, the recovered steam sensible heat The thermal efficiency as a steam generator should be presented by dividing by heat input or total heat output, but we would like to propose it at a dry engineering-related conference in the future.
従来技術では、 最高 l,800m/min近い高速で運転される抄紙機では、 シートと 多孔質のエンドレスフアブリックに同伴して多量の空気が疎な密閉フード内に入 り込むとともに、 フード内で高さ方向で激しい温度勾配と静圧勾配が出来るとと もに、 ポケット給気やボトム給気等と排気ダク 卜との配置にょリ静圧の大きなバ ラツキを生じ、 フードを形成する厚さ 7 5〜 1 0 O m m内外の断熱材を内蔵する 板金製組み立てパネル間の多数の間隙や開口からも低温空気が浸入して、 湿り空 気中水蒸気が局部的に冷却され結露しシー卜状物質上に汚れた凝縮水滴が滴下す るため、 露点温度で 6 0 °C、 酸素濃度で 16.8%、 絶対湿度で =0.1553kg/kg， DA 内外が限度であり、 熱効率はボイラー燃料発熱量基準で 50から 55%が限度であ つた。  According to the conventional technology, in a paper machine that operates at a high speed of up to 1,800 m / min, a large amount of air enters a sparse closed hood along with the sheet and porous endless fabric, In addition to a steep temperature gradient and static pressure gradient in the height direction, the thickness of the hood is large due to large static pressure fluctuations in the arrangement of the pocket air supply and bottom air supply and the exhaust duct. 75 to 10 O mm Built-in heat insulator inside and outside Low-temperature air enters through many gaps and openings between the sheet metal assembly panels, and the moisture in the humid air is locally cooled and condensed to form a sheet. Since condensed condensed water drops on the substance, the dew point temperature is 60 ° C, the oxygen concentration is 16.8%, the absolute humidity is = 0.1553 kg / kg, and the limits are inside and outside of DA. The thermal efficiency is based on the calorific value of the boiler fuel. The limit was 50 to 55%.
上記の計算例よりシート状物質の乾燥に関する熱及び物質移動方程式を以下の 如く纏めた。但し RCshs lc J / sを、回転体 1を内部加熱する時は其の所要熱量及び 外燃機付循環ガス熱交換器 3 4での、過熱水蒸気加熱所要熱量 (Required Calorie of superheated steam heat exchanger)。SWShm ¾：ン一卜巾虽 (Sheet Width)。BWbdkg/m2を、 BD坪量 (bone-dry Basis Weighty MS sh m/ sを、 抄速 (Machine Speed)。 WCin%を入 口水分％(Water Content at dryer inlet)。 WC。ut%を出口水分％(Water Content at dryer outlet)。 SCin%を入口固形分％(8011<1 Content at dryer inlet)。 SC。ut。/。を出口固形 分％(Solid Content at dryer outlet)。 ETexhshs k J /kgを衝撃フード出口排気後の過熱水 ^の比ェンタルヒ一 (Enthalpy or suuerheated steam after exhaust) 0 TMH2oin k ¾：入 口紙料中水温 (Temperature of Water in sheet inlet)。 SHH20 k J /kgk を水の比熱 (Specific Heat of Water)。 HL 。 +du) k J / sをフードゃダク ト類での損熱 (Heat Loss at Hood &Duct)。 HL。thk J / sを其の他漏洩蒸気等による損先熱量 (Heat Loss Other) 0 CDshbd k J / sをシ一卜の出入リロでの絶乾紙料顕熱差 (Calorie Difference between sheet inlet and outlet) 0 CDshwc k J / sをシ一卜の出入り口での紙料中水分顕熱差 (Calorie Difference of water content between inlet and outlet) 0 とす と、 回車云1 (本 を 内部加熱する時は其の加熱熱量を減じた、 外燃機付循環ガス熱交換器 3 4での、 過熱水蒸気加熱所要熱量は以下の方程式で示される。 RCshs = 〔 (SWshxBWbdxMSsh)x(WCin%/SCin% - WC0Ut%/SCout%)〕 χ 〔（ETexhshs— TMH2o X SHH2O) + HLho&du + CDShbd +し Dsilwc + HLoth] From the above calculation examples, heat and mass transfer equations relating to drying of the sheet material are summarized as follows. However, when the RC shs lc J / s and the rotating body 1 are internally heated, the required calorie and the required calorie of superheated steam heat exchanger in the circulating gas heat exchanger 34 ). SW S hm ¾: Sheet width. The BWbdkg / m 2, BD basis weight of (bone-dry Basis Weighty MS sh m / s, machine speed (Machine Speed). WC in% the incoming mouth moisture% (Water Content at dryer inlet) . WC. The ut% exit moisture% (water content at dryer outlet) . SC in% inlet solids% (8011 <1 content at dryer inlet). SC. ut ./. the exit solids% (solid content at dryer outlet) . ET exhshs k J / kg superheated water ^ ratio Entaruhi one after impact food outlet exhaust (Enthalpy or suuerheated steam after exhaust) 0 TMH 2 oin k ¾:. input mouth stock in water temperature (temperature of water in sheet inlet) SH H20 k J / kgk is the specific heat of water (HL. + du) k J / s is the heat loss at foods and hoods (Heat Loss at Hood & Duct). HL. th k J / s is the heat loss due to leaked steam (Heat Loss Other) 0 CD shbd k J / s is the calorie difference between sheet inlet and outlet and outlet) 0 CD shwc k stock in moisture sensible difference between the J / s sheet in one Bok of the doorway and to the (Calorie difference of water content between inlet and outlet) 0, times cars cloud 1 (this internal heating The required heat quantity of superheated steam heating in the circulating gas heat exchanger 34 with an external combustor is shown by the following equation. RC shs = [(SW sh xBW bd xMS sh ) x (WC in % / SC in % -WC 0Ut % / SC out %)] χ [(ET exhshs — TM H 2o X SH H2 O) + HLho & du + CD S hbd + D s i lwc + HL ot h]
循環ガス熱交換器 （34) での所要加熱熱量 kJ/s =衝撃過熱水蒸気質量流量 kg/ s X (衝撃過熱水蒸気ェンタルピ一 k J /kg—衝撃フ一ド出口排気後の過熱水蒸気 ェンタルピー k J /kg) Required heating heat amount in the circulating gas heat exchanger (34) kJ / s = shock superheated steam mass flow rate kg / s X (shock superheated steam enthalpy kJ / kg—superheated steam enthalpy kJ after exhaust from the impact hood outlet kJ /kg)
循環ガス熱交換器 （34) のガスバーナー （84) の燃料発熱量 kJ/S=循環 ガス熱交換器での所要加熱熱量 k J / s +燃焼機での排ガス損熱 k J / s +燃焼 機周辺輻射他損熱 kJ/s Fuel calorific value of gas burner (84) of circulating gas heat exchanger (34) kJ / S = required heating calorie of circulating gas heat exchanger kJ / s + exhaust gas heat loss of combustor kJ / s + combustion Heat radiation around machine kJ / s
従って、 循環ガス熱交換器 （34) のガスバーナー （84) の燃料発熱量 kJ/ s =衝撃過熱水蒸気質量流量 kg/ s x(衝撃過熱水蒸気ェンタルピー k J /leg—衝撃 フード出口排気後の過熱水蒸気ェンタルピー k J /kg) +燃焼機での排ガス損熱 k J /s+燃焼機周辺輻射他損熱 kJ/s Therefore, the fuel calorific value of the gas burner (84) of the circulating gas heat exchanger (34) kJ / s = shock superheated steam mass flow rate kg / sx (shock superheated steam enthalpy kJ / leg—shock superheated steam after exhaust from the hood outlet (Enthalpy k J / kg) + Heat loss of exhaust gas in the combustor k J / s + Heat loss from radiation around the combustor kJ / s
猶回転体 （1 ) を内部加熱する時は其の所要熱量を減ずる。 When heating the rotating body (1) internally, reduce the required heat.
又高温高露点加熱空気の乾燥に関する熱及び物質移動方程式を以下の如く纏め た。 RCairkJ/sを、 外燃機付循環ガス熱交換器 34での、 給排気完了後の循環高 . 温高露点空気加熱所要熱量（Required Calorie of heated high dew point air heat eXChangei')。 ETexhair k J /kg を衝撃フード出口後大気排気前の高温高露点空気の比 ェン レ C一 (Enthalpy of heated high dew point air after exhaust)。 とすると、 回車 E体 1を内部加熱する時は其の所要熱量を減じた、 外燃機付循環ガス熱交換器 34で の、 高温高露点加熱空気の加熱所要熱量は以下の方程式で示される。 The heat and mass transfer equations for drying high temperature and high dew point heated air are summarized as follows. The RC air kJ / s, the outside燃機with circulation gas heat exchanger 34, circulating high. Temperature and high dew point air heating heating requirements after intake and exhaust complete (Required Calorie of heated high dew point air heat e XC hangei ') . ET exhair k J / kg Enthalpy of heated high dew point air after exhaust after impact hood exit and before atmospheric exhaust. Then, the heat required for heating the high-temperature, high-dew-point heated air in the circulation gas heat exchanger with external combustor 34, in which the required heat amount is reduced when the rotating body E is internally heated, is expressed by the following equation. It is.
RCair = 〔 (SWshxBWbdxMSsh)x(WCin%/SCin% - WC0Ut%/SC0Ut%)〕 χ 〔 (ETexhair― TMH2OXSHH2O) + HLho&du + CDShbd + CDshwc + HLoti RC air = [(SW sh xBW bd xMS sh ) x (WC in % / SC in % -WC 0Ut % / SC 0Ut %)] χ [((ET exhair -TMH2O X SH H 2O) + HLho & du + CD S hbd + CD shwc + HL ot i
高温高露点空気乾燥法では、 【シート蒸発水分量 +新給気中水分量=排気中全水 分量】であり、 〖新給気乾燥空気換算重量 =全排気乾燥空気換算重量】が前提であ る。 In the high temperature and high dew point air drying method, it is assumed that [evaporated sheet moisture + moisture in the new supply air = total water content in the exhaust air], and that 〖new air supply dry air conversion weight = total exhaust dry air conversion weight]. You.
循環ガス熱交換器 （34) での所要加熱熱量 kJ/s=衝撃高温高露点空気質量 流量 kg/sx (衝撃高温高露点空気のェンタルピー kJ/kg—衝撃フード出口排気及 ぴ新給気混合後の高温高露点空気のェンタルピー k J /kg) Heating amount of heat required in the circulating gas heat exchanger (34) kJ / s = mass of impact high temperature and high dew point air flow kg / sx (enthalpy of impact high temperature and high dew point air kJ / kg—exhaust from impact hood outlet and after mixing new air High temperature and high dew point air enthalpy (kJ / kg)
循環ガス熱交換器 （34) のガスバーナー （84) の燃料発熱量 kJ/s=循環 ガス熱交換器での所要加熱熱量 kJ/s +燃焼機での排ガス損熱 kJ/s +燃焼 機周辺輻射他損熱 kJ/s Fuel calorific value of gas burner (84) of circulating gas heat exchanger (34) kJ / s = circulation Required heat of heating in gas heat exchanger kJ / s + Heat loss of exhaust gas in combustor kJ / s + Heat loss due to radiation around combustor kJ / s
従って、 循環ガス熱交換器 （34) のガスバーナー （84) の燃料発熱量 kJ/ s二衝撃高温高露点空気の質量流量 kg/ s x(衝撃高温高露点空気ェンタルピー k J /kg_衝撃フード出口排気及び新給気混合後の高温高露点空気ェンタルピー k J /kg) +燃焼機での排ガス損熱 kJ/s +燃焼機周辺輻射他損熱 kJ/s Therefore, the fuel calorific value of the gas burner (84) of the circulating gas heat exchanger (34) kJ / s The mass flow rate of the two-impact high-temperature high-dew point air kg / sx (shock high-temperature high-dew point air enthalpy kJ / kg_impact hood outlet High temperature and high dew point air enthalpy after mixing exhaust gas and fresh air (kJ / kg) + Heat loss from exhaust gas in the combustor kJ / s + Heat loss from radiation around the combustor kJ / s
猶回転体 （1 ) を内部加熱する時は其の所要熱量を減ずる。 以上説明したように、 本発明によれば、 外気と完全に遮断した 1 00°C以上の 加熱ガス雰囲気下の密閉フード内で、 複数の主として外周衝撃加熱による回転体 にシ一ト状物質をェンドレスで耐熱性を有する通気性帯状帯により圧着しながら、 其の伸縮を完全に拘束しつつ急速に乾燥させる。 シートより新たに蒸発する主と して水蒸気に起因する 1 00°C以上の余剰ガス （過熱水蒸気、 或いは露点温度 6 0°C以上の加熱湿り空気、 或いは微量の溶剤と酸素を含む 80%以上の窒素ガス と 5%内外の水蒸気） は密閉フード外部に排気し、 再循環ガスを 1 50°C以上に 再加熱して回転体の外周より吹き付ける。 余剰ガスは其の ί尽又は断熱圧縮して他 の熱源として再利用する。 図 26に加熱ガスとして 200°Cの過熱水蒸気 （S HWhen heating the rotating body (1) internally, reduce the required heat. As described above, according to the present invention, in a closed hood in a heated gas atmosphere of 100 ° C. or higher, which is completely insulated from the outside air, the sheet-like substance is applied to a plurality of rotating bodies mainly by outer peripheral impact heating. While drying with heat-resistant air-permeable strips at the endless, it is dried rapidly while completely restraining its expansion and contraction. Surplus gas of 100 ° C or more mainly due to water vapor newly evaporating from the sheet (superheated steam or heated moist air with a dew point temperature of 60 ° C or more, or 80% or more containing trace amounts of solvent and oxygen (Nitrogen gas and 5% water vapor inside and outside) are exhausted to the outside of the closed hood, and the recirculated gas is reheated to 150 ° C or more and sprayed from the outer periphery of the rotating body. Excess gas is exhausted or adiabatically compressed and reused as another heat source. Figure 26 shows superheated steam at 200 ° C (S H
S) を吹き付けた事例を實線で示すように、 回転体 1の表面温度は乾燥初期より 直ちに 1 7 5 °Cとなり、 回転体表面と接触側のシ一卜温度 S 3 も直ぐ 1 00 °Cに 到達し、 以降乾燥の進行に伴い徐々に上昇し水分 20%内外で 1 30°Cに、 水分The case where blown S) as shown in Minorusen, the surface temperature of the rotating body 1 immediately 1 7 5 ° C becomes from the initial drying stage, shea one WINCH temperature S 3 of the rotating member surface contact side immediately 1 00 ° C, and then gradually rises as the drying progresses, and the temperature rises to
9 %で 1 7 0 °Cになり、 ファブリック 36と接触側のシ一卜温度 S 1は水分 9 % で 1 5 5°Cに達し、 シートの中央部の温度 S2も水分 9%で 1 55°Cに達し、 シ —ト状物質 35と接触側のファブリック温度 、中央部のファブリック温度 F2 、 外側のフアブリック温度 と、 1 1 0 °C内外より 1 05 °C内外へ約 5 °C位の温度 落差があるが、 何れも 1 80°C内外の過熱水蒸気雰囲気下にあり、 シート状物質 35中の水分はフアブリック 36による高い張力下で回転体 1の回転体表面に圧 着されて、 水分の蒸発面では 1 1 0°C飽和圧力に近い 1.47気圧となり、 急速に 乾燥が促進される。 Becomes 1 7 0 ° C in 9%, shea one WINCH temperature S 1 of the contact side with the fabric 36 is reached 1 5 5 ° C 9% moisture, temperature S 2 of the central portion of the sheet at 9% moisture 1 reached 55 ° C, sheet - DOO matter 35 and the contact side of the fabric temperature, fabric temperature F 2 of the central portion, and outer Fuaburikku temperature, 1 1 0 ° C to about 5 ° C and out to the more 1 05 ° C and out There is a drop in temperature, but both are in a superheated steam atmosphere at around 180 ° C, and the moisture in the sheet-like material 35 is pressed onto the surface of the rotating body 1 under high tension by the fabric 36. However, on the water evaporation surface, the pressure becomes 1.47 atm, which is close to the saturation pressure of 110 ° C, and drying is accelerated rapidly.
なお、図 26に加熱ガスとして乾球温度 200°Cで絶対湿度 0.015kg/kg' DA (酸 素濃度 18.6%,相対湿度 0.15%、 ェンタルピー i = 58.3kcal/k g' DA、 湿球温度 t' =Figure 26 shows the heating gas used as a dry gas at a dry bulb temperature of 200 ° C and an absolute humidity of 0.015 kg / kg 'DA (acid Element concentration 18.6%, relative humidity 0.15%, enthalpy i = 58.3kcal / kg 'DA, wet bulb temperature t' =
48.8°C、 露点温度 t'， =20.4°C、 比体積 v=1.37m3/kg' DA) の加熱空気 （HA) を吹付けた事例を示すと、 一点鎖線線で示すように、 回転体 1の表面温度は過熱 水蒸気に比すると遅いが徐々に 1 65°Cに達し、 回転体表面と接触側のシート温 度 S' J も少し遅いが徐々に 1 00°Cに到達し、 以降乾燥の進行に伴い徐々に上 昇し水分 20 %内外で 1 1 0 °Cに、 水分 9%で 1 55。。になリ、 ファブリック 3 6と接触側のシ一ト温度 S ' jは水分 9%で 153°Cに達し、 シ一卜の中央部の温度 S' 2 も水分 9%で 1 55°Cに達する。 加熱空気の場合乾燥初期で多量の凝縮熱 を奪われ、 その露点温度近傍に周囲温度が停滞し、 過熱水蒸気の様に瞬時に蒸発 する事は困難である。 48.8 ° C, dew point temperature t ', = 20.4 ° C, specific volume v = 1.37m 3 / kg' DA) The surface temperature of body 1 is slower than superheated steam, but gradually reaches 165 ° C, and the sheet temperature S 'J on the contact side with the rotating body surface also reaches 100 ° C gradually but slightly later. As the drying progresses, the temperature gradually rises to 110 ° C inside and outside 20% moisture and 155 at 9% moisture. . Ninari, shea one bets temperature S of fabric 3 6 and the contact side 'j reaches 153 ° C at 9% moisture, the temperature S of the central portion of the sheet one Bok' even 2 at 9% moisture 1 55 ° C Reach. In the case of heated air, a large amount of heat of condensation is deprived in the early stage of drying, the ambient temperature stagnates near its dew point, and it is difficult to evaporate instantly like superheated steam.
発明者は開発の過程で加熱ガスとして過熱水蒸気と加熱湿リ空気とを使用した 場合の、 シート断面内での温度勾配が大きく異なる事に着目した。 即ち熱放射性 ガス特性を有する 200°Cの過熱水蒸気では、 フアブリックと高水分のシートと を隔てて、 回転体 1を直接加熱し、 急激にその表面温度を 1 Ί 5°Cに高めるとと もに、 同時にシートの回転体側温度 S3も 1 70°Cに急激に高めた。 また、 フアブ リック側温度 ははるかに遅れて 1 55°Cに達し、 シートの中央部温度 S2は更 に遅れて 1 55°Cに達した。 The inventor noticed that the temperature gradient in the cross section of the sheet was significantly different when superheated steam and heated air were used as heating gas during the development process. In other words, in the case of superheated steam at 200 ° C, which has heat-radiating gas properties, the rotating body 1 is directly heated by separating the fabric from the high-moisture sheet, and the surface temperature is rapidly increased to 1 高 め る 5 ° C. At the same time, the temperature S 3 of the sheet on the rotating body side was sharply increased to 170 ° C. Further, Fuabu Rick side temperature far behind reached 1 55 ° C, the central portion temperature S 2 of the sheet reached 1 55 ° C with a delay in further.
これに対し、 同じ 200°Cの加熱湿り空気では、 回転体 1の表面温度は徐々に では有るが 1 65°Cに上昇し、 同時にシ一卜の回転体側温度 S' 3も 1 55°Cにな リ、 またシートの中央部温度 S' 2もやや遅れて 1 55°Cに達し、 ファブリック側 温度 S' ！は少し遅れて 1 53 °Cに達したが、何れも過熱水蒸気時と異なリシ一卜 中の温度上昇速度差が甚だしく少ない。 On the other hand, with the same heated humid air at 200 ° C, the surface temperature of the rotating body 1 gradually rises to 165 ° C, albeit gradually, and at the same time, the rotating body side temperature S ' 3 of the sheet also becomes 155 ° C. in a Li, also the central portion temperature S of sheet '2 even a little later reached 1 55 ° C, the fabric-side temperature S'! Reached 153 ° C with a slight delay, but the difference in temperature rise during the refraction, which was different from that during superheated steam, was extremely small.
なお、薄い一枚一枚のシー卜間に、 亍ス卜目的により厚さ 0,1粍以下の薄い皮 膜構造の水分センサーと温度センサー数組を挟み込み、 プレスしてシー卜を製作 して、 夫々自動記録計と接続して計測した。  In addition, between the thin sheets, a pair of moisture sensors and temperature sensors with a thin film thickness of 0.1 mm or less are inserted for the purpose of casting, and the sheets are manufactured by pressing. Each was connected to an automatic recorder and measured.
者はその原因を蒸発機構の差に有ると考え考察を進め、 以下の結論に到達した。 実験当初では回転体を 3.8kg/cm2 (-470.7192 Kpa) の低圧水蒸気で加熱していた 力 排出されるドレンが著しく過熱されてフラッシュするので、 回転体への低圧 水蒸気を停止したところ、 逆に乾燥速度が早まり消費熱量も低下することを発見 した。 そこで、 3.8kg/ cm2 (=470.7192 Kpa) の飽和温度に相当する 149.59°C以上 の熱放射性ガスである過熱水蒸気若しくは露点温度 6 0 °C以上の高露点温度の加 熱空気によリ回転体を外周よリ加熱する時は、 その輻射熱によリ回転体外周が急 激に加熱されて温度が上昇し、 回転体外周と接する湿潤シート状物質の回転体側 温度との間の温度差による熱伝導により、 シー卜中水分が急激に蒸発して水蒸気 となり、 その ί尽シート中を貫通してシートのファブリック側に到り、 フアブリツ ク側との温度差によリ一部結露して凝縮伝熱によリシ一トのフアブリック側温度 を高めると想定した。 シー卜の中央部温度が一番遅れて上昇するのもその両面か らの熱伝導によるためと考察した。 Thought that the cause was the difference in evaporation mechanism and proceeded with the discussion, and reached the following conclusions. At the beginning of the experiment, the rotating body was heated with low-pressure steam of 3.8 kg / cm 2 (-470.7192 Kpa) .The discharged drain was overheated and flashed, so the low-pressure steam to the rotating body was stopped. Found that drying speed was faster and the amount of heat consumed was lower did. Therefore, 3.8kg / cm 2 (= 470.7192 Kpa) of Li rotated by the pressurized hot air saturation corresponding to the temperature 149.59 ° C over a hot radioactive gas superheated steam or dew point temperature 6 0 ° C or more higher dew point temperature When the body is reheated from the outer circumference, the radiant heat causes the outer circumference of the rotary body to be rapidly heated and the temperature rises, resulting in a temperature difference between the temperature of the wet body in contact with the outer circumference of the rotary body and the temperature of the rotary body side. Due to heat conduction, the moisture in the sheet evaporates rapidly to form water vapor, which penetrates through the exhausted sheet to the fabric side of the sheet, partially condenses due to the temperature difference from the fabric side, and condenses. It is assumed that the heat transfer increases the fabric side temperature of the sheet. The reason why the temperature at the center of the sheet rises most lately is considered to be due to heat conduction from both sides.
炭酸ガスや水蒸気の如く熱放射性ガス特性を有しない、 過熱水蒸気含有量の少 ない低露点温度の加熱湿り空気により回転体を外周より加熱する時は、 主として 熱対流によリ回転体外周が徐々に加熱されて温度も徐々に上昇し、 回転体外周と 接する湿潤シー卜の回転体温度との間の温度差による熱伝導により、 シート中の 水分が毛細管現象でシ一ト中を徐々に上昇して（注 capillary flow)シー卜のファ ブリック側に達し、 其の表面で蒸発して水蒸気になリ、 ファブリック中を通過し て凝縮と再蒸発を繰り返し最終的にシー卜の表面に達し蒸発して水蒸気になるた めと考察した。 したがって、 シート内の温度分布はシリンダ側から中央部、 ファ プリック側と徐々に上昇する。  When the rotating body is heated from the outer circumference by heating moist air with low superheated steam content and low dew point temperature, such as carbon dioxide gas and water vapor, which does not have a heat radiation gas characteristic, the outer circumference of the rotating body is gradually increased mainly by heat convection. The temperature in the sheet gradually rises as a result of heat transfer, and the moisture in the sheet gradually rises in the sheet due to the capillary phenomenon due to the heat conduction due to the temperature difference between the rotating body temperature of the wet sheet in contact with the outer circumference of the rotating body. Then, it reaches the fabric side of the sheet (e.g., capillary flow), evaporates on the surface to become water vapor, passes through the fabric, repeatedly condenses and re-evaporates, finally reaches the sheet surface and evaporates. And then turned into steam. Therefore, the temperature distribution in the seat gradually rises from the cylinder side to the center and to the fabric side.
—方、従来の内部加熱乾燥シリンダ乾燥による湿リ空気雰囲気下での乾燥では、 同じく図 2 6下半分に示す如く、 回転体 1 と接触側のシート温度 S 2 ょリフアブ リック 3 6と接触側のシ一ト温度 S i、シート 3 5と接触側のファブリック温度 F 中央部のファブリック温度 F 外側のファブリック温度 F3と、 乾燥サイクル の進行による①相から④相に到る間、 5 0 °G〜 1 0 0 Cと大幅な温度サイクル変 動が生じ、 シー卜状物質 3 5中の水分は回転休とシー卜の密着開始する迄の①相 では予熱されるのみで水分の蒸発は発生せず、 フアブリックによリシー卜状物質 が蔽われる②相でやっと水分の蒸発が徐々に進行するが、 密閉フード内のポケッ ト部が 6 0 °C内外の露点温度雰囲気下では、 蒸発した水蒸気がシ一卜中で冷却さ れて凝縮して再び水分に戻り、 何回も蒸発凝縮サイクルを繰り返して、 フアブリ ック 3 6に達した水蒸気も、 ファブリック内で再び凝縮して水分となり、 シート よりの蒸発を疎害することになる。 シー卜状物質 3 5はシー卜の単独自由走行相 である④相に到り、 周囲の湿り空気中にシート中の水分が蒸発して、 その蒸発潜 熱によリシ一ト温度は急速に 5 0 °C内外にまで低下して、 再び前述した①相に戻 つて予熱されることになリ、 断続した間謁的な乾燥サイクルとなり乾燥に長大な 時間を要し熱エネルギーや動力の損失が多い。 - How, the drying under humid air atmosphere by a conventional internal heat drying cylinder drying, also as shown in FIG. 2 6 lower half, the rotating body 1 and the contact side sheet temperature S 2 Yo Rifuabu Rick 3 6 contact side The sheet temperature S i, the fabric temperature on the contact side with the sheet 35 F The fabric temperature at the center F The fabric temperature F 3 on the outside, and 50 ° during the transition from the negative phase to the negative phase due to the progress of the drying cycle A large temperature cycle fluctuation of G to 100 C occurred, and the moisture in the sheet-like material 35 was only preheated in the phase until the rotation rest and the close contact of the sheet started, and the evaporation of moisture occurred. At first, the evaporation of the moisture gradually progresses in the phase, but the pockets in the closed hood are evaporated at a dew point temperature of 60 ° C or outside. Is cooled in the sheet, condensed and returned to moisture again , Also repeated evaporation and condensation cycle many times, the water vapor that has reached the Fabry-click 3 6 also serve as moisture condenses again in the fabric, sheet More harmful evaporation. The sheet-like material 35 reaches the phase ④, which is the sole free-running phase of the sheet, and the moisture in the sheet evaporates into the surrounding humid air, and the sheet temperature rapidly rises due to the latent heat of evaporation. The temperature drops to around 50 ° C, and the preheated state returns to the above-mentioned ① phase again, and the intermittent drying cycle becomes an audience-like drying cycle, requiring a long time for drying, and loss of heat energy and power. There are many.
また、 単独自由走行をする④相においては、 シート状物質 3 5は乾燥により幅 方向で自由収縮することによリ、 シート状物質のマシン方向 ( M D ) とクロス方 向 ( C D ) 間で物性強度等で方向性を生じ、 寸法安定性が悪化したリカールゃコ ックリング等を生じて、 印刷適性の低下を招く。 またシート状物質はプラスチッ クフィルム等とは異なリ、 多数のフィブリル化繊維が多層に積層して三次元的に 乾燥中に繊維間結合を生じるが、 湿リ空気を媒体とした乾燥ではフィブリル化し た繊維構造の密な部分と疎な部分とで乾燥の進行と共に乾燥の進行が異なり、 疎 な部分では限リなく絶対水分がゼロに近付いてしまうのでコックリングが発生し たり、 C Dや M Dカール等カール癖の有る紙になってしまう。  In addition, in the single phase of free-running, the sheet-like material 35 freely shrinks in the width direction due to drying, and the physical properties between the machine direction (MD) and the cross direction (CD) of the sheet-like material. It produces directionality due to strength, etc., and produces recurl / cockling, etc. whose dimensional stability has deteriorated, leading to a decrease in printability. In addition, sheet-like substances are different from plastic films, etc., and many fibrillated fibers are laminated in multiple layers, causing inter-fiber bonding during drying three-dimensionally. The progress of drying differs with the progress of drying between dense and sparse parts of the fibrous structure, and cockle occurs in the sparse parts because absolute moisture approaches zero without limit, and CD and MD curls occur. It becomes paper with curl habit.
また、 本発明による方法では、 従来の①相、 ③相がなく、 その大部分はフアブ リック 3 6によリ回転体 1にシー卜を圧着して蔽つた②相で、 次の回転体に到る 間、 僅かに回転体 1を離れるが、 サクシヨンファブリックロール 8により吸引さ れて拘束されたり、 2枚のフアブリック 3 6によリ両面を挿まれて拘束されて走 行する④'相であり、 何れも 1 3 0 °C以上の加熱ガス雰囲気下にあるので、 乾燥は 全期間を通じて促進され、 短時間で乾燥を完結することにより省エネルギーに貢 献出来た。 またシート状物質 3 5が常時拘束されて乾燥するので、 寸法安定性が 良く （水中伸度や気中伸度が小さい） カールやコックリング等を発生せず印刷適 性が極めて高い。 また、 本発明による方法では、 従来の如くシートの単独自由走 行部がなく常時拘束されているので、 例えシー卜が破れてもそのまま乾燥フード 出口より外部に搬出される。  In addition, in the method according to the present invention, there is no conventional (1) phase and (3) phase, most of which are (2) phases in which the sheet is pressed against the rotating body 1 by the fabric 36 and covered, and the next rotating body is formed. While arriving, it slightly leaves the rotating body 1, but is sucked and restrained by the suction fabric roll 8, or is restrained by being inserted and restrained by two fabrics 36 on both sides. Since both were in a heated gas atmosphere of 130 ° C or higher, drying was promoted throughout the entire period, and by completing the drying in a short time, it was possible to contribute to energy saving. In addition, since the sheet-like material 35 is constantly restrained and dried, the dimensional stability is good (the underwater elongation and the in-air elongation are small). The curability and cockling do not occur, and the printability is extremely high. Further, in the method according to the present invention, since the sheet is always restrained without a single free-running portion as in the related art, even if the sheet is broken, the sheet is directly carried out from the outlet of the drying hood to the outside.
密閉フ一ド 1 7の入口部 6 0でシー卜状物質 3 5を挟みその上下にサクシヨン ボックス 4 0とスチームボックス 4 3とを設け、 特にシート温度が低い乾燥初期 でシート状物質 3 5中の水分に、 加熱ガスの潜熱を与えて部分的に凝縮させ、 多 量の熱を瞬時に伝え低温シートを凝縮伝熱で急速加熱する事に成功した。 従来抄 紙機の高速化で低温シー卜状物質が回転シリンダに密着し、 シ一卜状物質が回転 シリンダに取られて多発した湿紙の断紙トラブルが解消する見通しが立った。 更 に、 本発明による方法では 1 0 0 °C以上の加熱ガス雰囲気下で、 回転体 1の外周 よリ通気性ファブリック 3 6を介して、 シート状物質 3 5に 1 0 0 °C以上の循環 再加熱ガスを吹出口 1 9より高速で吹き付け、 シート状物質 3 5中の水分を瞬間 的に多量に蒸発させ急速に乾燥する。 特にシート温度が急上昇して 1 0 0 °C近傍 に達した後からシ一卜水分が其の臨界点の水分 3 2から 2 6 %に到るシート中水 分が湿潤な間では、 シート中の水分はその場で蒸発して水蒸気となり、 シート中 をプレッシャーフロ一(Pressure flow)で通過し、其の急激な体積膨張によリ空隙が 急増して多孔質化し、 又嵩高に成る。 従来の露点温度 6 0 °C以下の低露点加熱湿 リ空気雰囲気では、 如何に 2 5 0 °C迄に加熱してもその顕熱しか利用できず、 容 積当リの伝熱量は過熱水蒸気や高露点加熱湿り空気に比し低湿度の加熱空気では 1 0分の 1位しか無く、温度を著しく高めることが必要になり、酸素濃度も 2 0 % 近く高いのでシ一ト状物質が乾燥すると着火の危険性や、 繊維が部分的に焦げ劣 化する恐れがあつたが、 過熱水蒸気や露点温度を 6 5 °C以上とした高露点加熱湿 り空気では皆無になった。 A sheet-like substance 35 is sandwiched between the inlets 60 of the sealing hood 17 and a suction box 40 and a steam box 43 are provided above and below the sheet-like substance 35. The latent heat of the heated gas was given to the water, and it was partially condensed. A large amount of heat was transferred instantaneously, and the low-temperature sheet was rapidly heated by the condensation heat transfer. Conventional paper With the speeding up of the paper machine, the low-temperature sheet-like material came into close contact with the rotating cylinder, and the sheet-like material was taken up by the rotating cylinder, and it was expected that the trouble of frequently breaking the wet paper breakage would be resolved. Further, in the method according to the present invention, under a heated gas atmosphere of 100 ° C. or more, the sheet-like material 35 is exposed to a temperature of 100 ° C. Circulation Reheat gas is blown at a high speed from the outlet 19 to instantaneously evaporate a large amount of water in the sheet material 35 and dry it quickly. In particular, after the sheet temperature suddenly rises and reaches around 100 ° C, the sheet moisture is between 32 and 26% at the critical point of the sheet while the moisture in the sheet is wet. The water evaporates on the spot to become water vapor, passes through the sheet by a pressure flow (Pressure flow), and its volume rapidly increases due to its rapid volume expansion, and becomes porous and bulky. In a conventional low-dew-point heating atmosphere with a dew-point temperature of 60 ° C or less, no matter how heated up to 250 ° C, only the sensible heat can be used. Heated air with low humidity is only about one-tenth that of hot air with high dew point heat and high dew point.It is necessary to raise the temperature remarkably. Then, there was a danger of ignition and the fibers could be partially burned and deteriorated. However, there was no such problem with superheated steam or high dew point heated humid air with a dew point temperature of 65 ° C or more.
新乾燥法の開発に伴い、当社研究所の協力下で各種のパルプ原料別 (夫々針葉樹 や広葉樹を原料とした B K Pや B C T M Pや D I P )と叩解度別に、夫々本発明の 方法で 2 5 0 °Cから 1 5 0 °C間で過熱水蒸気と加熱湿り空気で乾燥し膨大な数の シートを試作して、 調湿後各種の物性テストを実施した。 図 2 7、 図 2 8、 図 2 9、 図 3 0に、 その中より極一部を回帰方程式とともに示す。 それぞれ N B G T M P (針葉樹の Bleached Chemi Thermo Mechanical Pulp) と脱インク古紙 D I P (De Inked Pulp)を原料とする印刷紙で、 横軸に見掛密度を縦軸にそれぞれ 引張り強さの D R Yと W E Tの物性テスト結果を、 従来技術の内部加熱シリンダ による結果と比較して示す。 前述したように、 多子し質化により嵩高と成り見掛け 密度が低下した上に、 引張り強さの （DRY) (WET)共に大幅に強化された。 散布 図上に従来技術の内部加熱 Dryerと、 過熱水蒸気乾燥と加熱湿り空気乾燥を回帰 方程式で示すが、 夫々一目瞭然に品質の向上が認められると思う。 その他水浸伸 度や破裂強度等も大幅に改善された。 以下詳述すると図 2 7で N B C T M Pパル プによるテス卜で、 S H S 2 5 0 °Cと従来技術の乾燥筒ドライヤを回帰方程式よ り計算すると、 見掛け密度 0.4では S H S法で y=7.909、 従来法で y=5.87で約 34.7%の引張り強さ (DRY)の増加である。 図 2 8で D I Pパルプテストで、見掛け 密度 0.6で S H S法で y=7.9274、 従来法で y=6.5782で約 20.5%の引張り強さ (DRY)の増加である。図 2 9で N B C T M Pパルプテス卜で、見掛け密度 0.4では S H S法で y=0.55476、 従来法で y=0.16444で約 337.4%の引張り強さ（WET)の 増加である。 図 3 0で D I Pパルプテストで、 見掛け密度 0.5では S H S法で y= 0.233、 従来法で y=0.1184で約 196.8%の引張り強さ (WET)の增加である。 Along with the development of the new drying method, the method of the present invention was applied to each pulp material (BKP, BCTMP, and DIP made of softwood and hardwood, respectively) and the degree of beating with the cooperation of our research institute. After drying with superheated steam and heated humid air between C and 150 ° C, a huge number of sheets were prototyped and subjected to various physical property tests after humidity control. Fig. 27, Fig. 28, Fig. 29, Fig. 30 show a very small part of them along with the regression equation. Printed paper made from NBGTMP (Bleached Chemi Thermo Mechanical Pulp of softwood) and deinked waste paper DIP (De Inked Pulp), respectively.The abscissa indicates the apparent density and the ordinate indicates the tensile strength of DRY and WET, respectively. The results are shown in comparison with the results obtained with the conventional internal heating cylinder. As described above, the bulk density was increased due to the increase in the number of particles, the apparent density was reduced, and the tensile strength (DRY) (WET) was greatly enhanced. On the scatter diagram, the internal heating dryer of the prior art, the superheated steam drying and the heated wet air drying are shown by regression equations, and it is evident that the quality is clearly improved in each case. In addition, the water immersion elongation and burst strength were also greatly improved. Fig. 27 shows the NBCTMP pallet. Using a regression equation to calculate SHS 250 ° C and the conventional drying cylinder dryer using a regression equation, a tensile strength of about 34.7% with an apparent density of 0.4 was obtained at y = 7.909 by the SHS method and y = 5.87 by the conventional method. It is an increase in strength (DRY). In Figure 28, the DIP pulp test shows an increase in tensile strength (DRY) of about 20.5% at an apparent density of 0.6 at y = 7.9274 by the SHS method and y = 6.5782 at the conventional method. In Fig. 29, the NBCTMP pulp test shows an increase in tensile strength (WET) of about 337.4% with an apparent density of 0.4 at y = 0.55476 by the SHS method and y = 0.16444 by the conventional method. Figure 30 shows the DIP pulp test. At an apparent density of 0.5, the tensile strength (WET) increases by about 196.8% at y = 0.233 by the SHS method and y = 0.1184 by the conventional method.
例 1、 2、 3、 4、 5と、 図 2 4、 図 3 5に示すように、 本発明の方法を実施し た図 2 5の Morrie 線図に示す範囲 A (過熱水蒸気領域を暗示する領域） の 1 5 0 °C以上の過熱水蒸気での実施例 1と、 同じく範囲 B (高温高湿空気の領域） の 乾球温度 1 5 0 露点温度 6 0 °C以上の高温高湿度湿リ空気での実施例 2及び実 施例 3とでは、 循環ガス加熱用の熱交換器での所要熱量や熱効率が、 範囲 C (従 来の領域）の高温低湿度湿リ空気の実施例 4及び実施例 5に比べ大幅改善される。 即ち、 段落 （0 1 6 2 ) 項の④.紙 BD頓当りの所要熱量に示す様に 2 5 0 °Cの過 熱水蒸気吹付け時は、 ワイヤーパートより持ち込み水分を過熱水蒸気として回収 利用し、 従来技術の高圧容器乾燥筒に比し、 燃料消費量を約八分の一に (1/8)大幅 節減を可能にした。 また、 従来の技術範囲で露点温度の低い湿り空気である実施 例 5での排気は、 前述したような状態で t = 225.7°C、 x = 0.032kg/kg' DAで、 露 点温度 33.07°C、 i = 76.8kcal/kg' DA、 酸素濃度 17.9%で、 凝縮伝熱回収はできず 顕熱回収のみで、徒に大気中で凝縮し白煙化する排気を逃がすことになる。なお、 図 2 5において絶対温度の延長線と相対湿度 1 0 0 <%との交点が露点温度を示す。 図 3 1に示すように、 加熱ガスの衝撃温度は 1 5 0 °C以上高ければ高い程乾燥 速度も早いが、 耐熱性帯状体の価格が高く成り、 現状では 2 5 0 °C内外が有利で ある。 なお、 図にも示すように、 過熱水蒸気 （S H S ) と加熱湿り空気 （H A ) 間には空気の絶対湿度で異なるが 1 7 0 °Cから 2 2 0 °Cの遷移点を交差して、 低 温域では熱放射性が無い空気が、 高温域では熱放射性ガスである水蒸気の乾燥速 度が早くなリ逆転する。 加熱ガスの衝撃ガス速度は毎秒 5 0 m以上好ましくは 1 0 0 m以上が、 衝撃ガス吹込み用のノズル開口率は 2から 3 %以上が乾燥速度上 昇に寄与するが、 ガス流量の増加と共に電力消費量の急激な増加を伴うので経済 限界がある。 図はノズル口径 8粍で開口率 2. 51 %の場合を示す。 また、 ノズ ル開口の配置は衝撃ガスが連続してシー卜の一線に衝突するとシート表面にマー ク筋が付き易いので、 マーク付等の特殊紙用途を除き碁盤目は避け、 菱目配置か 又は強制横微動が好ましい。 なお、 ノズル開口率とは、 対向する回転シリンダへ の吹出し口 1 9の全投影面積と、 ノズル開口部全断面積との比率％を指す。 実際 にはノズルゃォリフィス形状で縮流を生じ、 ガスの衝突断面積は縮小し、 流速は 増加する。 猶、 図 31のテストに使用したファブリックはダイワボウ製通気度 7 555 CCMで、 材質は P PSであった。 As shown in Examples 1, 2, 3, 4, and 5, and FIGS. 24 and 35, the range A (indicating the superheated steam region) shown in the Morrie diagram of FIG. Example 1 with superheated steam of 150 ° C or more in the area (above), and dry bulb temperature in the range B (area of high-temperature and high-humidity air) of 150 ° C and high-humidity with a dew point of 60 ° C or more. In Example 2 and Example 3 using air, the required amount of heat and thermal efficiency in the heat exchanger for heating the circulating gas were higher than those in Example 4 and Example 4 using the high-temperature, low-humidity and humidity air in the range C (conventional area). It is greatly improved as compared with the fifth embodiment. In other words, when spraying superheated steam at 250 ° C, as shown in ④. Required heat per paper BD in paragraph (0 16 2), the water brought in from the wire part is collected and used as superheated steam. However, compared to the conventional high-pressure vessel drying cylinder, the fuel consumption has been reduced by approximately one-eighth (1/8). Exhaust air in Example 5, which is humid air with a low dew point temperature in the conventional technical range, is t = 225.7 ° C, x = 0.032kg / kg 'DA, and has a dew point temperature of 33.07 ° C, i = 76.8kcal / kg 'DA, Oxygen concentration 17.9%, condensed heat transfer recovery is not possible, only sensible heat recovery is performed, and exhaust which condenses in the atmosphere and turns into white smoke will escape. In FIG. 25, the intersection of the extension line of the absolute temperature and the relative humidity 100 <% indicates the dew point temperature. As shown in Fig. 31, the higher the impact temperature of the heated gas is, the higher the drying temperature is 150 ° C or higher, but the faster the drying speed is. It is. As shown in the figure, the superheated steam (SHS) differs from the heated humid air (HA) in the absolute humidity of the air, but crosses the transition point from 170 ° C to 220 ° C. In the low temperature range, the air without heat radiation reverses the drying speed of steam, which is the heat radiation gas, in the high temperature range. The impact gas velocity of the heated gas should be 50 m or more per second, preferably 100 m or more, and the opening rate of the nozzle for injecting the shock gas should be 2 to 3% or more. However, there is an economic limit due to the rapid increase in power consumption as the gas flow rate increases. The figure shows the case where the nozzle diameter is 8 mm and the opening ratio is 2.51%. In addition, the nozzle openings are arranged so that if the shock gas continuously collides with the line of the sheet, mark streaks are easily formed on the sheet surface. Alternatively, forced lateral fine movement is preferable. The nozzle opening ratio refers to the ratio% of the total projected area of the outlet 19 to the opposing rotating cylinder and the total sectional area of the nozzle opening. Actually, a contraction occurs in the shape of the nozzle orifice, the cross-sectional area of gas collision decreases, and the flow velocity increases. The fabric used in the test of Fig. 31 had a Daiwabo air permeability of 7 555 CCM and was made of PPS.
図 32に乾燥速度と加熱ガスの衝撃速度との関係を、 夫々 250°Cの加熱空気 と過熱水蒸気でノズル開口率 5. 65 % (ノズル口径 12耗） と 2. 51 % (ノズ ル口径 8粍） 時を示す。 図 33には乾燥速度とノズル開口率 （12粍、 8粍、 4粍 -0.63%) との関係を、 夫々 250°Cと 200°Cの加熱空気と過熱水蒸気で衝撃 速度 70と 38及び 92と 48mZs e c. 時を示す。 上記のグラフは夫々ノズ ル径を 1 2, 8, 4粍に開口したキャップフードを順次交換して、 何れも加熱ガ スの循環ファン回転数をィンバーターモータで夫々 30 H zと 60 H zに変更し て行い、 衝撃速度はノズル出口で実測した。 図 34には乾燥速度とエンドレスフ アブリックの通気度 C CM (cm3/ cm2/分、背圧 1.27 cm) (猶 1 m3/m2/時は、 1.667 C CM) との関係を示す。 Fig. 32 shows the relationship between the drying speed and the impact speed of the heated gas. The nozzle opening ratio was 5.65% (nozzle diameter 12 was worn) and 2.51% (nozzle diameter 8) with heated air and superheated steam at 250 ° C, respectively. Indicates the time. Fig. 33 shows the relationship between the drying speed and the nozzle opening ratio (12 um, 8 um, 4 um -0.63%). The impact speeds were 70, 38, and 92 with heated air and superheated steam at 250 ° C and 200 ° C, respectively. And 48mZs e c. In the above graph, the cap hoods with nozzle diameters of 1, 2, 8, and 4 were sequentially replaced, respectively, and the circulation fan rotation speed of the heated gas was changed by the inverter motor to 30 Hz and 60 Hz, respectively. The impact speed was measured at the nozzle outlet. Drying speed and endless off Aburikku air permeability C CM (cm 3 / cm 2 / min, back pressure 1.27 cm) in FIG. 34 (grace 1 m 3 / m 2 / time, 1.667 C CM) shows the relationship between .
本発明の方法を各種の紙によリテス卜したが、 薄い紙では勿論の事例え厚いボ —ドでも効果が有る事を証明する為に、 BKP (晒クラフトパルプ)を原料に、 図 36に従来の内部加熱シリンダによリ乾燥したボートを、 図 37に本発明の方法 の 250°C過熱水蒸気による衝撃乾燥法で乾燥したポ一トを、 図 38に本発明の 方法の 244.2 °Cで絶対湿度 =0.672kg/kg' Daの加熱空気による衝撃乾燥法で 乾燥したポー卜を、 夫々ボート断面の電子顕微鏡写真を示す。 上図は倍率 50で 中図は 1 00で下図は 200であるが、 過熱水蒸気乾燥法のみがシ一ト内部の空 隙が飛躍的に増大している事が明白である。 又上図で判明する如く、 従来技術の ボード厚さが 1.25粍が本発明法の過熱水蒸気では 1.65粍と（加熱空気では 1. 23粍)、約 32%も嵩高である。其の差は図 26でシー卜の湿り域でのシー卜温 度が、 S H Sが 1 1 0 °Cと 1 0 0 °Cの間であるのに比し、 H Aでは其の露点温度 の関係より 9 0 °C近傍以下である事による。 水銀圧入法による細孔テスト結果、 従来の内部加熱シリンダにより乾燥したボ The method of the present invention was tested on various types of paper, and in order to prove that even thin paper as well as thick paper is effective, BKP (blown kraft pulp) was used as a raw material. Fig. 37 shows a boat dried by a conventional internal heating cylinder, Fig. 37 shows a port dried by an impact drying method using 250 ° C superheated steam of the method of the present invention, and Fig. 38 shows a port dried at 244.2 ° C of the method of the present invention. Electron micrographs of boat cross sections are shown for the ports dried by the shock drying method using heated air at an absolute humidity of 0.672 kg / kg 'Da. The upper figure shows a magnification of 50, the middle figure shows 100, and the lower figure shows 200. It is clear that only the superheated steam drying method significantly increases the voids inside the sheet. As can be seen from the above figure, the board thickness of the conventional technology is 1.25 mm, but the superheated steam of the present invention is 1.65 mm (1.23 mm with heated air), which is about 32% bulky. The difference is shown in Figure 26. This is because the SHS is between 110 ° C and 100 ° C, whereas HA is below 90 ° C due to its dew point temperature. The pore test result by the mercury intrusion method,
-トでは嵩密度が 0.4116gん cだが、 本発明の方法の 2 5 0 °C過熱水蒸気による衝 撃乾燥法で乾燥したポートでは 0.3142g/ccとなり、 約 3 1 %も低下した。 Although the bulk density was 0.4116 gm in the case of -g, the port dried by the impact drying method using 250 ° C. superheated steam in the method of the present invention was 0.3142 g / cc, which was about 31% lower.
本発明によれば、 シート状物質を支持する外部加熱式回転体の外周方向から特 定な条件下で加熱ガスを吹き付けることによって、 湿潤状態のシート状物質内水 分を瞬間気化蒸発 (プレッシャーフロー)させ、 多孔質状態に高速で乾燥し、 従来 技術に比し約 3 2 %も嵩高の低見掛密度の紙を製造することが出来る。このとき、 シ一ト状物質を、 通気性の帯状帯によってシリンダとの間で挟みつつ特定な条件 下で加熱ガスを吹き付けることにより、 シート状物質の収縮を抑え、 従来技術に 比し安定した物性と高い強度値を有する紙を、 従来技術の約 1/8の所要熱量で製 造することが出来る。 又乾燥速度は、 従来技術に比し Fabric Through (従来技術で あるャンキードライヤーでは低湿度の高温燃焼ガス又は空気を直接吹付ける）で 約 6倍強が達成出来た。  According to the present invention, the heating gas is blown under specific conditions from the outer peripheral direction of the externally heated rotary body that supports the sheet-like substance, thereby instantaneously vaporizing and evaporating the water in the wet sheet-like substance (pressure flow). ), And dried at a high speed in a porous state, making it possible to produce paper with a low apparent density of about 32% as bulky as the conventional technology. At this time, by heating the sheet-like substance under specific conditions while sandwiching the sheet-like substance between the cylinder and the air-permeable strip, the shrinkage of the sheet-like substance is suppressed, and the sheet-like substance is more stable than the conventional technology. Paper with physical properties and high strength values can be produced with about 1/8 the required heat of the prior art. In addition, the drying speed was about 6 times higher than that of the conventional technology with Fabric Through (direct combustion of high-temperature combustion gas or air with low humidity in the case of a junky dryer).
産業上の利用の可能性 本発明によるシート状物質の乾燥方法は、加熱ガスを吹き付けることによって、 湿潤状態のシート状物質内水分を瞬間気化蒸発させ、 多孔質状態に高速で乾燥す るので、 従来技術に比し約 3 2 %も嵩高の低見掛密度の紙を製造することに応用 することができる。 この方法によって、 従来技術によって得られる紙と比較して 安定な物性と高い強度値を有する紙を従来技術の約 1/8の所要熱量で製造するこ とが出来る。  Industrial Applicability Possibility of drying the sheet-like material according to the present invention is that, by spraying a heating gas, moisture in the wet sheet-like material is instantaneously vaporized and evaporated, and dried at a high speed in a porous state. It can be applied to the production of low apparent density paper which is about 32% more bulky than the conventional technology. By this method, paper having stable physical properties and high strength value compared to paper obtained by the prior art can be produced with about 1/8 the required heat of the prior art.

Claims

i主マ求の範囲 i
1. 湿潤状態のシー卜状物質を乾燥する工程を有するシート状物質の製造方法 において、 1. A method for producing a sheet-like substance having a step of drying a wet sheet-like substance,
全面接合による密閉構造を有し且つ熱膨張による伸縮可能な内側箱体（1 7 A) と外側箱体（1 7 B) とを断熱材を介して重ねて一体化して箱体のフード （1 7) を形成し、 前記フード内部に対する前記シ一ト状物質 (35) の入口部及び出口 部を含む該フードの貫通部のそれぞれにシール機構を設けて前記フード内部を外 気と遮断し、  The inner box (17 A) and the outer box (17 B), which have a closed structure by full-surface joining and can expand and contract due to thermal expansion, are stacked and integrated via a heat insulating material to form a box hood (1 7) is formed, and a seal mechanism is provided at each of the through-portions of the hood including the inlet portion and the outlet portion of the sheet-like substance (35) with respect to the inside of the hood, so as to block the inside of the hood from the outside air,
前記フード内部に、 平滑な外周面を有する回転体 （1 ) と該回転体の回転に同 期して移動する通気性を有する帯状帯 （36) とを設け、 前記回転体 前記帯状 帯とで前記シ一ト状物質を挟みつつ、 前記フード内部の前記シー卜状物質をガス 循環装置を用いて乾球温度 80°C以上の加熱ガスによリ循環加熱するとともに、 前記シー卜状物質からの蒸発水蒸気と前記フード内部に供給する給気中水蒸気と の合計重量に略相当する水蒸気を含む露点温度 60°C以上の高湿度空気を排気し, 該排気量と乾燥空気重量で略等量の低湿度空気を前記フード内部に給気すること を特徴とするシート状物質の製造方法。  A rotating body (1) having a smooth outer peripheral surface and a gas-permeable band (36) moving in synchronization with the rotation of the rotating body are provided inside the hood. While sandwiching the sheet-like substance, the sheet-like substance inside the hood is recirculated and heated with a heating gas having a dry-bulb temperature of 80 ° C. or more using a gas circulation device, and Exhaust high-humidity air with a dew point temperature of 60 ° C or more, which contains steam substantially equivalent to the total weight of the evaporated steam and the supplied steam in the hood. A method for producing a sheet-like substance, wherein low-humidity air is supplied into the hood.
2. 湿潤状態のシート状物質を乾燥する工程を有するシート状物質の製造方法に おいて、 2. In a method for producing a sheet-like substance having a step of drying a sheet-like substance in a wet state,
全面接合による密閉構造を有し且つ熱膨張による伸縮可能な内側箱体（ 1 7 A) と外側箱体 （1 7 B) とを断熱材を介して重ねて一体化して箱体のフード （1 7) を形成し、 前記フード内部に対する前記シート状物質 （35) の入口部及び出口 部を含む該フードの貫通部のそれぞれにシール機構を設けて前記フード内部を外 The inner box (17A) and the outer box (17B), which have a hermetically sealed structure and can expand and contract due to thermal expansion, are stacked and integrated via a heat insulating material to form a box hood (1 7) is formed, and a seal mechanism is provided at each of the through-portions of the hood including an inlet portion and an outlet portion of the sheet-like substance (35) with respect to the inside of the hood, and the inside of the hood is externally provided.
5Iと遮断し、 Cut off with 5I,
前記フード内部に、 平滑な外周面を有する回転体 （1 ) と該回転体の回転に同 期して移動する通気性を有する帯状帯 （36) とを設け、 前記回転体と前記帯状 帯とで前記シ一卜状物質を挟みつつ、 ガス循環加熱装置を用いて前記回転体の外 周から 1 00°C以上の加熱ガスを前記シート状物質に吹き付けて循環加熱するこ とを特徴とするシート状物質の製造方法。 A rotating body (1) having a smooth outer peripheral surface and a gas-permeable band (36) that moves in synchronization with the rotation of the rotating body are provided inside the hood, and the rotating body and the band-shaped band are provided. A sheet characterized in that a heating gas of 100 ° C. or more is sprayed onto the sheet material from the outer periphery of the rotating body by using a gas circulating heating device while the sheet material is sandwiched, and the sheet material is circulated and heated. Production method of solid substances.
3. 前記加熱ガスを、 前記回転体 （1 ) に対して昇降自在に設けられたキヤノビ —フード （1 5) より、 給気ダクト （27) 及びフレキシブルダクト （62) を 介して供給することを特徴とする請求項 1又は 2記載のシート状物質の製造方法 3. Supplying the heating gas from a canopy-hood (15) provided to be able to move up and down with respect to the rotating body (1) through an air supply duct (27) and a flexible duct (62). The method for producing a sheet-like substance according to claim 1 or 2,
4. 前記ガス循環装置は前記フード （1 7) 外部に設けられたガス循環ブロワ一 (25) を含み、 前記フードの壁部の一部に給気ダク ト （27) 及び吸込ダク ト (24) を配置するとともに該給気ダク ト及び吸込ダク 卜と前記壁部とをシール し、 前記給気ダク ト及ぴ吸込ダク トを介して加熱ガスを前記フード内部を含む経 路で循環することを特徴とする請求項 1〜 3のいずれか一項記載のシート状物質 の製造方法。 4. The gas circulating device includes a gas circulating blower (25) provided outside the hood (17), and a part of a wall of the hood includes an air supply duct (27) and a suction duct (24). ) And seals the supply duct and the suction duct with the wall, and circulates a heating gas through the supply duct and the suction duct through a path including the inside of the hood. The method for producing a sheet-like substance according to any one of claims 1 to 3, characterized in that:
5. 前記ガス循環装置には外部加熱手段に接続する循環ガス熱交換器を接続し、 ガス循環ブロワ一 （25) により前記フード （1 7) 内部から吸引した排気ガス を前記循環ガス熱交換器 （34) により加熱し、 該加熱したガスを前記フード内 部に戻すことを特徴とする請求項 1〜4のいずれか一項記載のシート状物質の製 造方法。 5. A circulating gas heat exchanger connected to an external heating means is connected to the gas circulating device, and the exhaust gas sucked from the inside of the hood (17) by a gas circulating blower (25) is circulated to the circulating gas heat exchanger. The method according to any one of claims 1 to 4, wherein the heating is performed by (34), and the heated gas is returned to the inside of the hood.
6. 全面接合による密閉構造を有し且つ熱膨張による伸縮可能な壁部内側箱体 と壁部外側箱体とを断熱材を介して重ねて一体化することで前記フードのうち天 井部又は床部を除く壁部を形成し、 6. The ceiling portion or the ceiling portion of the hood is formed by stacking and integrating a wall inner box body and a wall outer box body that have a closed structure by full-surface joining and that can expand and contract due to thermal expansion via a heat insulating material. Form the wall except the floor,
前記天井部又は床部の大部を、 前記フードからの排気ガス開口として、 全面接 合によリ密閉構造とし且つ熱膨張による伸縮を可能とした傾斜内側箱体と傾斜外 側箱体とを断熱材を介して重ねて一体化して傾斜天井部又は傾斜床部とし、 前記壁部内側箱体と前記傾斜内側箱体とを相互に全面接合によリ接続し、 前記排気ガス開口に排気ガス中の異物を除去する排気フィルタ（33)を設け、 前記傾斜天井部又は傾斜床部の端末に吸込ダク ト （24) を接続したことを特徴 とする請求項 1〜 5のいずれか一項記載のシート状物質の製造方法。 A large part of the ceiling or floor is used as an exhaust gas opening from the hood, and the inclined inner box and the inclined outer box, which have a hermetically sealed structure by whole surface joining and are capable of expansion and contraction by thermal expansion, are provided. An inclined ceiling portion or an inclined floor portion is superposed and integrated via a heat insulating material, and the wall inner box and the inclined inner box are connected to each other by full-surface bonding, and exhaust gas is exhausted to the exhaust gas opening. An exhaust filter (33) for removing foreign matter therein is provided, and a suction duct (24) is connected to a terminal of the inclined ceiling portion or the inclined floor portion. A method for producing a sheet-like substance.
7.前記入口部及び出口部をシールするシール機構は、専用の出入口用帯状帯（1 2) を上下ロール及び耐熱シール材でシールし、 前記入口部及び出口部のシール 機構は前記シート状物質 （35) を挟み前記フード （1 7) 内部に対して搬入及 び搬出することを特徴とする請求項 1〜 6のいずれか一項記載のシー卜状物質の 製造方法。 7. The sealing mechanism for sealing the entrance and the exit is to seal a dedicated belt for entrance and exit (12) with upper and lower rolls and a heat-resistant sealing material, and the sealing mechanism for the entrance and the exit is the sheet-like material. The method for producing a sheet-like substance according to any one of claims 1 to 6, wherein the hood (17) is carried in and out of the hood (35).
8. 前記フード （1 7) 内部に設けられている前記帯状帯 （36) の一部を、 前 記入口部及び出口部のシート通過用スリット （95) 及び帯状帯通過用スリット8. A part of the strip (36) provided inside the hood (17) is replaced with a slit (95) for passing a sheet and a slit for passing the strip at the entry and exit portions.
(96、 97) を介して前記フード外部に延長し、 前記シート状物質 (35) を 前記入口部を介して延長された前記帯状帯 （36) で受け取ってフード内部に搬 入して前記回転体 （1 ) に渡し、 前記出口部を介して延長された前記帯状帯 （3 6) を用いて前記シート状物質 （35) を前記フード内部より搬出することを特 徴とする請求項 1〜 6のいずれか一項記載のシー卜状物質の製造方法。 (96, 97), the sheet-like substance (35) is received by the band-like band (36) extended through the inlet portion, is carried into the hood, and is rotated. The sheet-like substance (35) is delivered from the inside of the hood by passing the sheet-like substance (35) to the body (1) and using the band-like band (36) extended through the outlet portion. 7. The method for producing a sheet-like substance according to any one of 6.
9. 前記入口部及び出口部のそれぞれに、 更にスチームボックス (43) とサク シヨンボックス (40) とを上下に設けてスチームカーテン帯を形成することを 特徴とする請求項 7又は 8記載のシート状物質の製造方法。 9. The sheet according to claim 7, wherein a steam curtain band is formed by further providing a steam box (43) and a suction box (40) at the entrance and the exit, respectively. Production method of solid substances.
1 0. 前記回転体 （1 ) は主として外部加熱主体の、 多数の回転プレートロール (56) により支持される回転プレー卜 (55) であることを特徵とする請求項10. The rotating body (1) is a rotating plate (55) supported mainly by a number of rotating plate rolls (56) mainly composed of external heating.
1〜 9のいずれか一項記載のシート状物質の製造方法。 10. The method for producing a sheet-like substance according to any one of 1 to 9.
1 1. 前記回転体 （1 ) は複数設けられているとともに、 該複数の回転体のそれ ぞれは上下 2段に配置され、 前記シート状物質 （35) は前記複数の回転体のそ れぞれに支持されつつ走行され、前記帯状帯（36)は、前記上段側の回転体（ 1 ) に支持されたシート状物質 （35) を挟むように設けられた上段帯状帯 （36A) と、 前記下段側の回転体に支持されたシ一卜状物質を挟むように設けられた下段 帯状帯 （36 B) とからなることを特徴とする請求項 1〜 1 0のいずれか一項記 載のシート状物質の製造方法。 1 1. A plurality of the rotating bodies (1) are provided, and each of the plurality of rotating bodies is arranged in upper and lower two stages, and the sheet-like material (35) is each of the plurality of rotating bodies. The belt-shaped band (36) is supported and supported by the upper-side rotating body (1). The upper band-shaped band (36A) is provided so as to sandwich the sheet-like material (35) supported by the upper-stage rotating body (1). The lower belt-shaped band (36B) provided so as to sandwich the sheet-like material supported by the lower rotating body, wherein the lower belt-shaped belt (36B) is provided. The method for producing the sheet material described above.
1 2. 前記回転体 （1 ) は複数設けられているとともに、 該複数の回転体のそれ ぞれは上下 2段に配置され、 前記 ート状物質 （35) は前記複数の回転体のそ れぞれに支持されつつ走行され、 前記帯状帯 （36) は、 前記上下段の回転体に 支持されたシート状物質の両面をサンドイッチ状に挟むように設けられた上段帯 状帯 （36A) と下段帯状帯 （36 B) とからなることを特徴とする請求項 1〜1 2. A plurality of the rotators (1) are provided, and each of the plurality of rotators is disposed in upper and lower two stages, and the sheet-like substance (35) is a member of the plurality of rotators. The belt-shaped belt (36) is run while being supported by each, and the upper belt-shaped belt (36A) provided so as to sandwich both surfaces of the sheet-like material supported by the upper and lower rotating bodies in a sandwich manner. And a lower band-shaped band (36B).
1 0のいずれか一項記載のシート状物質の製造方法。 10. The method for producing a sheet-like substance according to any one of 10.
1 3. 上段に配置された回転体 （1 ) と下段に配置された回転体 （1 ) との間で 走行する前記シート状物質 （35) の表裏面に対して加熱ガスを吹き付けるスク エアーフード （47) により第 2加熱ガス供給部を構成することを特徴とする請 求項 1〜 1 0のいずれか一項記載のシ一ト状物質の製造方法。 1 3. A screen hood that blows heated gas to the front and back surfaces of the sheet-like material (35) running between the rotating body (1) arranged in the upper stage and the rotating body (1) arranged in the lower stage. The method for producing a sheet-like substance according to any one of claims 1 to 10, wherein the second heating gas supply unit is constituted by (47).
1 4. 上段に配置された回転体 （1 ) と下段に配置された回転体 （1 ) との間で 走行する前記シート状物質 （35) の表裏面に対して帯状帯 （36) 側に加熱ガ スを吸い込むサクシヨンファブリックボックス (50) と吸込み函 (48，） とを 設けたことを特徴とする請求項 1 ~ 1 0のいずれか一項記載のシート状物質の製 造方法。 1 4. The front side and back side of the sheet-like substance (35) running between the rotating body (1) arranged on the upper stage and the rotating body (1) arranged on the lower stage, The method for producing a sheet-like substance according to any one of claims 1 to 10, further comprising a suction fabric box (50) for sucking heated gas and a suction box (48).
1 5. 前記回転体 （1 ) は複数設けられているとともに、 該複数の回転体のそれ ぞれは 1段に配置され、 前記シート状物質 （35) は前記複数の回転体のそれぞ れに支持されつつ走行され、 前記回転体に支持されたシ一卜状物質を挟むように 設けられたエンドレスで通気性を有する帯状帯 （36) は、 前記回転体間のサク シヨンファブリックロール （8) に前記シート状物質を吸い付けるように設けら れたことを特徴とする請求項 1〜 1 0のいずれか一項記載のシ一卜状物質の製造 方法。 1 5. A plurality of the rotating bodies (1) are provided, each of the plurality of rotating bodies is arranged in one stage, and the sheet-like material (35) is each of the plurality of rotating bodies. An endless, air-permeable band (36) provided so as to sandwich the sheet-like material supported by the rotating body while being supported by the rotating body, a suction fabric roll (8) between the rotating bodies. The method for producing a sheet-like substance according to any one of claims 1 to 10, wherein the sheet-like substance is provided so as to suck the sheet-like substance.
1 6. 前記回転体 （1 ) は複数設けられているとともに、 該複数の回転体のそれ ぞれは 1段に配置され、 前記シート状物質 （35) は前記複数の回転体のそれぞ れに支持されつつ走行され、 ェンドレスで通気性を有する帯状帯 (36) は、 上 段側の回転体に支持されたシート状物質を挟むように設けられた上段帯状帯 （3 6 A) と、 下段側のサクシヨンファブリックロール （8) に吸い付けられたシ一 卜状物質を挟むように設けられた下段帯状帯 （36 B) とがらなることを特徴と する請求項 1〜 1 0のいずれか一項記載のシー卜状物質の製造方法。 1 6. A plurality of the rotating bodies (1) are provided, each of the plurality of rotating bodies is arranged in one stage, and the sheet-like substance (35) is each of the plurality of rotating bodies. The belt (36), which is supported and supported by the wind and is endless and breathable, The upper band-shaped band (36 A) provided so as to sandwich the sheet-shaped material supported by the rotator on the stage side, and the sheet-shaped material sucked to the lower suction fabric roll (8). The method for producing a sheet-like substance according to any one of claims 1 to 10, wherein the method comprises a lower band-like band (36B) provided so as to sandwich the sheet-like substance.
1 7. フード （1 7) 内部の前記回転体 （1 ) 及び帯状帯用回転体軸受の強制 潤滑機構は常温のフード外部に設け、 水冷若しくは冷媒方式によリ 60°C以下に 冷却し、 給排油配管は断熱保冷構造とし、 前記軸受は水冷構造として戻り油温度 は 98 °C以下とすることを特徴とする請求項 1〜1 6のいずれか一項記載のシ一 卜状物質の製造方法。 1 7. The forced lubrication mechanism for the rotating body (1) inside the hood (17) and the rotating body bearing for the belt-shaped belt is provided outside the hood at room temperature, and cooled to 60 ° C or less by water cooling or a refrigerant system. The sheet-like material according to any one of claims 1 to 16, wherein the oil supply / discharge oil pipe has an adiabatic cooling structure, and the bearing has a water cooling structure and a return oil temperature is 98 ° C or less. Production method.
1 8. 耐熱材よりなる床面に固定した平滑表面のソ一ルプレー卜 （1 4) 上に、 前記外側箱体 （1 7 B) の四周側壁部それぞれの底面各中央部をほぼ中心とし熱 膨張による平行移動が可能に耐熱パッキンを介して据付けたことを特徴とする請 求項 1〜 1 7のいずれか一項記載のシー卜状物質の製造方法。 1 8. On the smooth surface of the plate (14) fixed to the floor made of heat-resistant material, heat was applied to the center of the bottom of each of the four side walls of the outer box (17B). The method for producing a sheet-like substance according to any one of claims 1 to 17, wherein the sheet-like substance is installed via a heat-resistant packing so as to be able to move in parallel by expansion.
1 9. 前記加熱ガスとして 1 00°C以上の過熱水蒸気を用いる乾燥では、 湿潤状 態のシート状物質 （35) からフード （1 7) 内部で蒸発する水蒸気重量にほぼ 相当する過熱水蒸気を排気ファン（81 )によりフード外部に排気するとともに、 前記フード内部のキヤノビ一フード （1 5) のガス排出口からの排気ガスを、 ガ ス循環ブロワ一 （25) により吸込ダク ト （24) を経て吸引し、 〔衝撃ガスの質 量流量 kg/s (衝撃ガスのェンタルピー kJ/kg—フ一ド出口排気後のガスのェンタ ルピー kJ/kg) +燃焼機での排ガス損熱 kJ/s +輻射他損熱 kJ/s 〕に相当する熱量の、 回転体 （1 ) を内部加熱する時は其の所要熱量を減じた、 ガス又は液体燃料を燃 焼して循環ガス熱交換器 （34) で加熱し、 給気ダク ト （27) を絰て再ぴフ一 ド （1 7) 内部のキヤノビ一フードに戻すことを特徴とする請求項 2記載のシ一 ト状物質の製造方法。 1 9. In the drying using superheated steam of 100 ° C or more as the heating gas, the superheated steam approximately equivalent to the weight of the steam evaporated inside the hood (17) from the wet sheet-like material (35) is exhausted. The fan (81) exhausts air to the outside of the hood, and exhaust gas from the gas outlet of the canopy hood (15) inside the hood passes through the suction duct (24) by the gas circulation blower (25). Suction and mass flow rate of impact gas kg / s (enthalpy of impact gas kJ / kg—enthalpy of gas after exhaust from feed outlet kJ / kg) + Heat loss of exhaust gas in combustor kJ / s + radiation When the rotor (1) is internally heated with a heat equivalent to other heat loss (kJ / s), the required heat is reduced. Gas or liquid fuel is burned and the circulating gas heat exchanger (34) is used. Heat the air supply duct (27) and return to the inside of the canopy hood (17). Method for producing a sheet one bets matter according to claim 2, wherein a.
20. 前記加熱ガスとして 1 00°C以上の過熱水蒸気を用いる乾燥で、 循環ガス 熱交換器 （3 4 ) で加熱所要熱量が、 20. Circulating gas by drying using superheated steam of 100 ° C or more as the heating gas The amount of heat required for heating in the heat exchanger (34) is
RCshs= C(SWsh x BWbd x MSsh) x (WCin%/SCin%- WC0Ut%/SC0Ut%)] x 〔(ETexhshs ― TMH2O X SHH2。) +HLh0&du + CDshbd + CDsilwc + HLoth3 RC shs = C (SW sh x BWbd x MS sh ) x (WC in % / SC in % -WC 0Ut % / SC 0Ut %)] x [(ET exhshs -TMH 2 O X SHH2.) + HLh 0 & du + CDshbd + CD s i lwc + HL ot h3
で有ることを特徴とする請求項 2記載のシ一卜状物質の製造方法。  3. The method for producing a sheet-like substance according to claim 2, wherein:
但し、  However,
RCshs ;回転体 （1 ) を内部加熱する時は其の所要熱量及び外燃機付循環ガス 熱交換器での過熱水蒸気加熱所要熱量 kJ/s、 RC shs ; When heating the rotating body (1) internally, the required heat quantity and the required heat quantity of superheated steam heating in the circulating gas heat exchanger with external combustor kJ / s,
SWsh； シ一ト幅 m、 SW sh ; sheet width m,
BWbd； BD坪量 kg/m2、 BWbd; BD basis weight kg / m 2 ,
MS sh；抄速 m/s、 MS sh ; speed m / s,
WCin%；入口水分％、 WC in %; inlet moisture%,
WC0Ut%； 出口水分％、 WC 0Ut %; outlet moisture%,
SCin%；入口固形分％、 SC in %;
SC0Ut%； 出口固形分％、 SC 0Ut %; outlet solids%
ETexhshs； キヤノビーフ一ド出口排気後の過熱水蒸気のェンタルピー kJ/kg、 TMH20in；入口紙料中水温 k、 ET exhshs ; enthalpy of superheated steam after exhaust of cano beef outlet kJ / kg , TM H 20in; water temperature in inlet stock k,
SHH20；水の比熱 kJ/kg.k, SH H20 ; Specific heat of water kJ / kg.k,
• HL(h0+du)；箱体ゃダク 卜類での損熱 kJ/s、 • HL (h0 + du) ; heat loss in box / ducts kJ / s,
HLoth；其の他漏洩蒸気等による損失熱量 kJ/s、 HL oth ; other heat loss due to leaked steam etc. kJ / s,
CDshbd； シー卜の出入リ口での絶乾紙料顕熱差 kJ 、 CD shbd ; sensible heat difference kJ at the entrance and exit of the sheet,
CDshwc； シ一卜の出入リロでの紙料中水分顕熱差 kJ/s、 CD shwc ; Moisture sensible heat difference in paper at the entrance and exit relo of the sheet kJ / s,
である。  It is.
2 1 . 前記加熱ガスとして乾球温度 8 0 °G以上の高温高露点空気を用いる乾燥で は、 湿潤状態のシート状物質 （3 5 ) からフード （1 7 ) 内部で蒸発する水蒸気 重量と他の経路よリ持込まれる水蒸気重量との和にほぼ相当する水蒸気を含む高 露点空気を排気ファン （8 1 ) によりフード外部に排気し、 該排気量に対して乾 燥空気重量換算でほぼ等量の低湿度空気を給気すると共に、 前記フード内部のキ ヤノピーフード （1 5 ) のガス排出口からの排気ガスを、 ガス循環ブロワ一 ( 2 5 ) により吸込ダク ト （2 4 ) を経て吸引し、 〔衝撃ガスの質量流量 kg/s x (衝撃 ガスのェンタルピー kJ/kg—フード出口排気及び新給氣混合後のガスのェンタル ピー kJ/kg) +燃焼機での排ガス損熱 kJ/s+輻射他損熱 kJ/s〕 に相当する熱量の、 回転体 （1 ) を内部加熱する時は其の所要熱量を減じた、 ガス又は液体燃料を燃 焼して循環ガス熱交換器 （3 4 ) で加熱し、 給気ダクト （2 7 ) を経て再び前記 フード内部のキヤノピーフードに戻すことを特徴とする請求項 1記載のシート状 物質の製造方法。 21. In the drying using high-temperature, high-dew point air with a dry bulb temperature of 80 ° G or more as the heating gas, water vapor evaporating from the wet sheet-like substance (35) inside the hood (17) and other factors Exhaust fan (81) exhausts high dew point air containing water vapor approximately equivalent to the sum of the weight of water vapor brought in from the path of the outside to the outside of the hood. Low-humidity air, and exhaust gas from the gas discharge port of the canopy hood (15) inside the hood is supplied to a gas circulation blower (2). 5) Suction through the suction duct (2 4), then [Mass flow rate of shock gas kg / sx (enthalpy of shock gas kJ / kg—enthalpy of gas after hood outlet exhaust and new supply air mixing kJ / kg ) + When the rotor (1) is internally heated with a heat equivalent to the exhaust gas heat loss (kJ / s + radiation heat loss kJ / s) in the combustor, the required heat is reduced, and gas or liquid fuel is used. 2. The sheet-like substance according to claim 1, wherein the substance is heated by a circulating gas heat exchanger (34) and returned to a canopy hood inside the hood through an air supply duct (27). Production method.
2 2 . 高温高露点空気乾燥で、 給排気完了後の循環ガス熱交換器 （3 4 ) で加熱 所要熱量が、 2 2. High-temperature, high-dew-point air drying, heating with a circulating gas heat exchanger (34) after air supply and exhaust is completed.
RCair= C(SWsh x BWbd x MSsh) x (WCin%/SCin%-WCout%/SCout%)3 x C(ETeXhair 一 TMH2O X S Hmo) + HLh0&du + CDShbd +CDsilwc+ HLoth〕 RC air = C (SW sh x BW bd x MS sh) x (WC in% / SC in% -WC ou t% / SCout%) 3 x C (ET eX hair one TMH 2 O X S Hmo) + HLh 0 & du + CD S hbd + CD s i lwc + HL ot h)
で有ることを特徴とする請求項 1記載のシート状物質の製造方法。 2. The method for producing a sheet-like substance according to claim 1, wherein:
但し、 '  Where '
RCair 回転体 （ 1 ) を内部加熱する時は其の所要熱量及び外燃機付循環ガス 熱交換器での給排気完了後の循環高温高露点空気加熱所要熱量 kJ 、  When the RCair rotating body (1) is internally heated, its required heat quantity and the required heat quantity of circulating high temperature and high dew point air heating after completion of air supply / exhaust in the circulating gas heat exchanger with external combustor kJ,
SWsh； シ一卜幅 m、 SW sh ; sheet width m,
BWbd； BD坪量 kg/m2、 BW bd ; BD basis weight kg / m 2 ,
MS sh；抄速 m/s、 MS sh ; speed m / s,
WCin%；入口水分％、 WC in %; inlet moisture%,
WC0Ut%； 出口水分％、 WC 0Ut %; outlet moisture%,
SCin%；入口固形分％、 SC in %;
SC0ut%； 出口固形分％、 SC 0 ut%; outlet solids%
ETexhair；キヤノビーフ一ド出口後大気排気前の高温高露点空気のェンタルピ ― kJ/s、 ET exhair enthalpy of high-temperature, high-dew point air after exiting the cano beef and before atmospheric exhaust-kJ / s,
TMH20in；入口紙料中水温 TM H20in ； Inlet stock water temperature
SHH2o；水の比熱 kJ/kg.k：、 SH H 2o; Specific heat of water kJ / kg.k :,
HL(h0+du)；箱体ゃダク ト類での損熱 kJ/s、 HL (h0 + du) ; heat loss in the box ゃ ducts kJ / s,
HL。th；其の他漏洩蒸気等による損失熱量 kJ 、 CDshbd； シ一卜の出入り口での絶乾紙料顕熱差 kJ/s、 HL. th ; other heat loss due to leaked steam, etc. kJ, CD shb d; Absolute dry paper sensible heat difference at the doorway of the sheet kJ / s,
CDshwc； シ一卜の出入リロでの紙料中水分顕熱差 kJ/s、 CD shwc ; Moisture sensible heat difference in paper at the entrance and exit relo of the sheet kJ / s,
である。 It is.
2 3 . 前記フード （ 1 7 ) 内部静圧をプラス圧に設定する様に、 過熱水蒸気乾燥 では排気ファン （8 1 ) の回転数又は排気制御ダンパー （4 2 ) により排気量の みを、 高温高湿度空気乾燥では給気制御ダンパー （3 7 ) と排気ファン （8 1 ) の回転数又は排気制御ダンパー （4 2 ) により給排気量を制御して、 前記フード 内部圧力をフード外部圧力より少し高めに設定することを特徴とする請求項 1〜23. In order to set the internal static pressure of the hood (17) to positive pressure, in superheated steam drying, only the number of revolutions of the exhaust fan (81) or the exhaust control damper (42) is used to control the exhaust volume. In high-humidity air drying, the air supply control damper (37) and the number of revolutions of the exhaust fan (81) or the exhaust control damper (42) control the supply / exhaust air volume so that the internal pressure of the hood is smaller than the external pressure of the hood. Claims 1 to 5, characterized in that they are set higher
2 2のいずれか一項記載のシート状物質の製造方法。 22. The method for producing a sheet-like substance according to any one of 22.
2 4。 前記シート状物質 （3 5 ) から蒸発する水蒸気を含む 1 0 0 °C以上の余剰 ガスを、 ガスタービンに供給して真空段で発電するか、 間接熱交換器により低圧 水蒸気を発生させるか板型熱交とダク ト等を使用し低圧損で塗工機や他の抄紙機 の熱源として供給再利用することを特徴とする 1〜2 3のいずれか一項記載のシ ート状物質の製造方法。 twenty four. An excess gas containing water vapor evaporating from the sheet material (35) at 100 ° C or more is supplied to a gas turbine to generate power in a vacuum stage, or a low-pressure steam is generated by an indirect heat exchanger. The sheet-like substance according to any one of 1 to 23, wherein the sheet-like substance is reused as a heat source of a coating machine or another paper machine with low pressure loss using mold heat exchange and ducts. Production method.
2 5 . 全面接合による密閉構造を有し且つ熱膨張による伸縮可能な内側箱体 （1 7 A ) と外側箱体 （1 7 B ) とを断熱材を介して重ねて一体化して箱体のフード ( 1 フ) を形成し、 前記フード内部に対するシート状物質の入口部及び出口部を 含む該フードの貫通部のそれぞれにシール機構を設けて前記フード内部を外気と 遮断し、 前記フード内部に、 平滑な外周面を有する回転体と該回転体の回転に同 期して移動する通気性を有する帯状帯 （3 6 ) とを設け、 前記回転体と前記帯状 帯とで前記シート状物質 （3 5 ) を挟みつつ、 循環ガス熱交換器 （3 4 ) を用い て前記回転体の外周から 1 0 o °c以上の加熱ガスを前記シ一卜状物質に吹き付け て循環加熱することでシート状物質を乾燥する際、 湿り域でのシ一ト状物質内部 を直接 9 0 °C以上に加熱することにより内部からのプレッシャーフロ一水分蒸発 でシ一卜状物質内に多孔質部を多数形成させ嵩高とし、 水分を初め印刷インクや 各種の樹脂や薬品の吸収性と含浸性を高めると共に、 水蒸気雰囲気中で硝子転移 点温度を低め原料パルプ中のへミセルローズやリグニンを溶融させ引張り強度等 物性強度を大幅に高めることを特徴とするシート状物質。 25. The inner box (17A) and the outer box (17B), which have a hermetically sealed structure and can expand and contract due to thermal expansion, are stacked and integrated via a heat insulator to form a box. A hood (1f) is formed, and a seal mechanism is provided at each of the penetrating portions of the hood including an inlet portion and an outlet portion of the sheet-like substance with respect to the inside of the hood to block the inside of the hood from outside air. A rotating body having a smooth outer peripheral surface; and a band-like band having air permeability moving in synchronization with rotation of the rotating body. 5) With a circulating gas heat exchanger (34), a heating gas of 10 ° C. or more is sprayed from the outer periphery of the rotating body onto the sheet-like material using a circulating gas heat exchanger (34) to circulate and heat the sheet-like material. When drying the substance, heat the interior of the sheet-like substance in the wet area directly to 90 ° C or more In this way, a large number of porous parts are formed in the sheet-like material by pressure flow and moisture evaporation from the inside to increase the bulkiness, while increasing the absorption and impregnation of water and other printing inks, various resins and chemicals, Glass transition in steam atmosphere A sheet-like material characterized by lowering the point temperature and melting hemicellulose and lignin in the raw pulp to greatly increase the physical strength such as tensile strength.
2 6 . 前記シート状物質は、 新聞紙巻取紙、 非塗工印刷用紙、 微塗工印刷用紙、 塗工印刷用紙、 特殊印刷用紙、 情報用紙、 包装用紙、 ライナー及び中芯等段ポー ル原紙、 白板及び黄板等紙器用板紙、 建材及び紙管等其の他板紙、 衛生用紙、 雑 種紙、 特殊紙、 含浸用原紙、 含浸加工紙、 電解コンデンサー用紙いずれか 1つで あることを特徴とする請求項 2 5記載のシー卜状物質。 26. The sheet material is newspaper rolled paper, uncoated printing paper, finely coated printing paper, coated printing paper, special printing paper, information paper, packaging paper, liner and core core paper, white board And paperboard for paper containers, such as yellow board, building materials and paper tubes, and other paperboard, sanitary paper, hybrid paper, specialty paper, impregnating base paper, impregnated paper, and electrolytic capacitor paper. A sheet-like substance according to claim 25.
PCT/JP2003/000421 2003-01-20 2003-01-20 Sheet-like material manufacturing method and sheet-like material WO2004065689A1 (en)

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JPH02264095A (en) * 1989-04-04 1990-10-26 Ebara Corp Hood equipment for dryer of paper-making machine
US5553392A (en) * 1993-11-15 1996-09-10 Tokushu Paper Mfg. Co., Ltd. Process and apparatus for drying sheet materials
US5653041A (en) * 1993-03-22 1997-08-05 Valmet Corporation Drying method and drying module as well as dryer sections that make use of same, in particular for a high-speed paper machine

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JPH02264095A (en) * 1989-04-04 1990-10-26 Ebara Corp Hood equipment for dryer of paper-making machine
US5653041A (en) * 1993-03-22 1997-08-05 Valmet Corporation Drying method and drying module as well as dryer sections that make use of same, in particular for a high-speed paper machine
US5553392A (en) * 1993-11-15 1996-09-10 Tokushu Paper Mfg. Co., Ltd. Process and apparatus for drying sheet materials

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Publication number Priority date Publication date Assignee Title
JP2020165057A (en) * 2019-03-29 2020-10-08 日本製紙株式会社 Plant fiber material given with functionality

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