EP3351885A1 - Procédé de fonctionnement d'un séchoir pour bois humide et installation de séchage - Google Patents

Procédé de fonctionnement d'un séchoir pour bois humide et installation de séchage Download PDF

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Publication number
EP3351885A1
EP3351885A1 EP17000106.9A EP17000106A EP3351885A1 EP 3351885 A1 EP3351885 A1 EP 3351885A1 EP 17000106 A EP17000106 A EP 17000106A EP 3351885 A1 EP3351885 A1 EP 3351885A1
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EP
European Patent Office
Prior art keywords
dryer
drying
turntable
drying plant
chamber
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP17000106.9A
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German (de)
English (en)
Inventor
Rupert Kaindl
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Individual
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Individual
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Priority to EP17000106.9A priority Critical patent/EP3351885A1/fr
Publication of EP3351885A1 publication Critical patent/EP3351885A1/fr
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/001—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors
    • F26B17/005—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors with rotating floors, e.g. around a vertical axis, which may have scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/001—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors
    • F26B17/006—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors the movement being imparted by oscillation or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • F26B25/007—Dust filtering; Exhaust dust filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/24—Wood particles, e.g. shavings, cuttings, saw dust

Definitions

  • the invention relates to a method for operating a drying plant and a drying plant for moist wood and comparable bio-materials.
  • moist wood is a small-sized wood substance understood, which preferably consists of wood chips, sawdust, wood shavings and small pieces of wood, and crushed bark.
  • Wood drying generally refers to a process for removing moisture from wood.
  • the invention relates to the so-called chamber drying of wood materials to increase the calorific value.
  • the EP 2 889 537 A1 provides the supply of hot gases resulting from a furnace in admixture with fresh air as drying air for a arranged in a drying chamber belt dryer.
  • the belt dryer is followed by a rotor dryer.
  • the temperatures of the exhaust gases after the combustion of wet biomass, e.g. Wood, are in a temperature range of e.g. 100 ° C to 200 ° C on the exhaust side of the boiler and flow so unused in the atmosphere, which corresponds to an unfavorable heat utilization.
  • the object of the invention is to still use part of the energy present in the boiler exhaust gases, as far as economically possible and reasonable.
  • the dust content of the exhaust gases according to the system according to the invention should be below the prescribed legal value.
  • the energy of the exhaust gases is used according to the invention for predrying the fuel for the boiler system. If technically and commercially feasible or meaningful, part of the latent heat (heat of condensation) will also be used for further predrying or for other purposes.
  • the invention therefore has the object of further developing a drying plant for moist, wood-like, small-piece or chip-like fuels of the type mentioned so that a simpler and more reliable plant is created at a much lower particulate matter and better process efficiency.
  • the invention is characterized by the technical teaching of claim 1.
  • Feature is that the exhaust gases at the outlet of the boiler system directly from top to bottom, but without an intermediate heat exchanger, through a layered material bed from the provided for combustion in the boiler system wet fuel flow. These are thus pre-dried by the hot exhaust gases of the boiler plant.
  • the Bed-like, pre-dried fuel layer thus acts like a large-area dust filter.
  • a partial stream of the water vapor-saturated exhaust gases after exiting the layer, for admixture and thus for cooling the hot boiler exhaust gases to z. B. used about 90 ° C.
  • This mixing temperature is selectable and depends i.a. from the start of the gas formation of hydrocarbons from the biomass. If the outgassing of hydrocarbons is to be prevented, the mixed gas inlet temperature, depending on the quality, should not exceed approx. 90 ° C. However, the temperature may also depend on the type of biomass.
  • the pre-cleaned, cooled gases are cleaned in a downstream wet electrostatic precipitator to the required pure gas dust values.
  • the resulting condensate can be routed directly into the municipal wastewater or previously treated accordingly.
  • the method is not set to a specific type of dryer. However, the use of a plate dryer is preferred. Instead, a belt dryer can be used. With the same procedure, similar drying results can be achieved there, but a little more expensive in the production.
  • the invention describes a combination of a dryer with integrated or downstream wet electrostatic filter.
  • a wet electrostatic precipitator ensures that the dust content of the waste gases of wet-fired biomass boiler plants, in any load range of the boiler plant, is below the statutory limit.
  • the boiler exhaust gases are lowered to a desired inlet temperature.
  • the process of predrying e.g. the fuel and the pre-cleaning of the exhaust gases, is possible in a filter dryer based on the inventive concept. This process is preferably carried out with a plate filter drier.
  • a suitable filter material On a, rotating in a housing plate a suitable filter material is placed. On this filter material, the material to be dried is regularly applied radially with a screw conveyor. The quantity to be entered on the filter surface is controlled and monitored with a level gauge. The layer height of the registered material can be selected and adjusted.
  • the dryer plate is driven centrally.
  • the speed is adjustable.
  • the plate for receiving the filter fabric is designed such that in addition to the required support of the bed layer and an optimal gas flow of the drying gases is ensured by the bed layer.
  • the hot exhaust gases from the boiler are lowered by the temperature-dependent admixture of the saturated exhaust gases, coming after the dryer, but before the filter, to the desired inlet temperature.
  • a parallel to the feed screw radially arranged discharge screw continuously promotes the pre-dried biomass in the chute.
  • the dust content of the exhaust gases is lowered in the downstream wet electrostatic precipitator below the legally prescribed values.
  • FIG. 1 In general, a process scheme of the drying layer according to the invention is shown as a preferred embodiment.
  • the dried fuel material which consists of small-sized and / or fibrous and / or flaky and / or granular and / or wood parts (including sawdust and wood shavings) and also of shredded bark, is burned in a boiler furnace and due to the inventive system is achieved at a lower CO content, a much better combustion efficiency. In addition, the combustion efficiency of the gases is improved and a better boiler efficiency is achieved.
  • the boiler Due to the supplied, highly qualified dried kiln, the boiler can be driven in larger partial load ranges, which would not be possible with solely wet kiln.
  • the exhaust gases produced there are introduced via a temperature control in a mixing chamber 11 and from there into a turntable dryer 2, which ensures a particularly good drying efficiency, because he works as a bed dryer.
  • a filter 3 is arranged, via which the exhaust gases are filtered and then the exhaust gases pass into a condensation stage 4th
  • the condensation stage 4 can also be omitted and the gases can also be sucked in directly downstream of the filter 3 by a fan 5 and blown into the chimney 13.
  • the condensation stage 4 is therefore optional, but can also be omitted.
  • Important in the invention is a return of approximately or completely 100% saturated exhaust gases at the outlet of the dryer 2 via a recirculation branch 7, the dried from the dryer 2 exhaust gases in the direction of arrow 14 back to the mixing chamber 11 and due to the temperature control 9 now again in the dryer feeds.
  • a fan 8 is arranged in the recirculation branch.
  • FIG. 2 is opposite FIG. 1 A more detailed process diagram is shown in detail, in which it can be seen that at the outlet of the boiler 1, a exhaust gas compressing boiler fan 12 is present, which introduces the effluent gases with a temperature t1 in the mixing chamber 11.
  • the gases leave the mixing chamber 11 at the temperature t 2 and the gases cooled down are introduced into the turntable dryer 2, where they are returned at the outlet of the rotary dryer via the recirculation branch 7 again in the mixing chamber 11 in whole or in part.
  • the arranged in the recirculation branch 7 fan 8 is speed-controlled and has a speed controller 10.
  • the speed n of the fan 8 is regulated as a function of the temperature t2.
  • FIG. 3 shows the return of the partial flow from the dryer 2, at its output line via the recirculation branch 7, with feedback to the input of the dryer 2.
  • a mixing chamber arranged there has the advantage that the moisture content of the exhaust gases after the dryer 2 is higher. As a result, a higher condensation temperature is achieved. With the additional condensation stage and thus achieved higher condensation temperature, it is possible to exploit the energy of the exhaust gases over a larger energy range and / or to achieve improved drying performance even at lower temperatures. By removing the recirculated gas in front of the filter, the filter can be made smaller.
  • FIG. 3 is one opposite the Figures 1 and 2 further detailed process scheme shown.
  • FIG. 3 shows that the exhaust gases from the furnace 1 at a temperature in the range of about 100 ° C - 200 ° C flow and get there into the mixing chamber 11.
  • the temperature control 9 is arranged, which performs a mixture of the input side of the boiler supplied exhaust gases with the recirculated gases in the recirculation branch 7 and ensures that a mixed gas at the output branch 41 of the mixing chamber 11 at a temperature of preferably about 90 ° C. is produced.
  • the moist fuel material enters the dryer 2 via the wet material supply 50 from a fuel silo 51 and is introduced into the turntable dryer 2.
  • the dried gases only have a temperature in the range between 45 ° C-70 ° C and returned with this temperature in the direction of arrow 14 in the recirculation branch 7 via the fan 8 as recirculated gas into the mixing chamber 11 become.
  • the recirculated gas be recycled at a volume equal to about half of the total gas. However, this volume depends on the temperature t1 and the residual moisture of the dried material and can be regulated.
  • Half of the unreturned, dried gas from the dryer 2 is introduced into the filter 3, at the output of which the gases preferably have a temperature in the range of about 45 ° C-70 ° C.
  • drying exhaust gases 39 thus generated which flow out in the outlet branch 40 of the filter, are optionally fed to a condensation stage 4.
  • condensation stage can also be omitted or bypassed, it being stated in the present exemplary embodiment for the sake of simpler description that a condensation is carried out in a condensation stage 4.
  • the saturated gases have at the output of the condensation stage 4 according to the capacitor power lower temperature and are introduced via the fan 5 in the chimney 13 and discharged into the atmosphere.
  • the filter ie in the clean gas flow.
  • additional hot air can be generated if required and thus the performance of the dryer can be increased.
  • the intended for drying, stored in the fuel silo 51 wet fuel material is collected via a arranged at the dryer outlet discharge shaft 35 and fed as pre-dried fuel an intermediate silo 16, and returned from this via the fuel supply 49 into the furnace 1.
  • FIG. 4 shows a preferred drying device, namely in the formation of a turntable dryer 2, which is arranged in a drying chamber 17, in the sealed protrudes a central drive shaft 19 which is driven by a motor 18, for example in the direction of arrow 21 rotating.
  • the drive shaft 19 is rotatably connected to a turntable 20 of the turntable dryer 2, which therefore rotates driven in the dryer chamber 17 in a horizontal plane rotates and radially outer edge seals 23 in the direction of the vertical walls of the dryer chamber 17 has.
  • the turntable 20 is preferably made of a metal or plastic material and has sufficient openings through which the drying gases flow therethrough.
  • the top and / or bottom is otherwise covered by a sieve belt 22 or sieve film, which has a sieve size such that a fine dust passage is largely prevented.
  • a sieve belt 22 or sieve film which has a sieve size such that a fine dust passage is largely prevented.
  • the screen belt (22) or the screen film cover only the top of the turntable 20, while the bottom is free.
  • a feed 24 the moist, to be dried Good, which is stored in the fuel silo 51, fed via the Nassgutzuschreib 50 in the direction of arrow 26, wherein a level control 25 is present, which always ensures that a precisely metered amount in the inlet region of a Feeding screw 27 passes.
  • a feed screw 27 another longitudinal conveyor may also be used, e.g. a chain or belt conveyor or a rotary valve.
  • the feed screw 27 is preferably designed as a helical worm whose worm shaft is driven in rotation by a motor 28.
  • the feed screw 27 generates in the dryer chamber 17 on the turntable 20 and on the screen belt 22 arranged there, a height of about uniform material bed 30, which has a certain filling level.
  • the filling amount is controlled by a level sensor 29, which controls the speed of the motor 28 of the feed screw 27.
  • the filling level can be changed manually or automatically depending on the version.
  • the material bed 30 thus produced is directed through the exhaust gases of the boiler in the vertical direction from top to bottom and dried, as shown in FIG. 4 is shown schematically.
  • the exhaust gases of the furnace 1 with the temperature t1 are thus introduced into the mixing chamber 11 and introduced there at a certain temperature in the inflow pipe 42 into the dryer chamber 17 at a temperature t2.
  • the material thus dried also enters the removal area of a discharge screw 31, the worm shaft of which in turn is rotationally driven by a motor 28.
  • the discharge screw 31 is directed horizontally and arranged approximately parallel above the material bed 30 and serves to discharge the stacked on the turntable 20 material bed 30th
  • the height of the material bed in the region of the discharge screw 31 is selected to be smaller than the height of the material bed in the region of the feed screw 27, so that a certain amount of material always remains on the turntable 20 for drying.
  • additional fixed wiping or deflecting or cleaning strips can be used, which improve the material discharge of the material bed 30.
  • fixed or revolving mixing shafts can be provided, which pass through the material bed in the radial direction in order to ensure thorough mixing of the drying substances during one revolution of the turntable 20.
  • the turntable 20 is vibrated with vibrators in order to improve a loosening of the material bed 30 during the drying cycle on the turntable 20.
  • the discharge screw 31 completely eliminates the material bed 30 when this pre-dried material bed 30 reaches the area of the discharge screw 31.
  • the discharge screw 31 transports the material radially outward in the direction of the arrow 33.
  • shut-off device 34 is arranged to allow a gas-tight seal of the dryer chamber 17 and to prevent the gases to be collected via the obturator 34 are discharged in an undesirable manner.
  • the obturator 34 may e.g. be designed as a butterfly valve, double pendulum flap or as a rotary valve or the like.
  • the pre-purified saturated flue gases which flow through the screen belt 22 down into the dryer chamber 17, are collected in the direction of arrow 36 in an exhaust gas space 37, and fed from there to a filter 38, which is preferably designed as a wet electrostatic precipitator.
  • the purified drying exhaust gases 39 flow into the output branch 40 and are according to the Process Scheme in FIG. 3 alternatively introduced via the condensation stage 4 in a fan 5 or introduced by bridging de condensation stage 4 directly into the fan 5 and blown from there into the chimney 13.
  • FIG. 4 shows that a condensate drain 47 is still provided beyond the obturator 34.
  • FIG. 5 shows the top view of the arrangement FIG. 4 with further details.
  • FIG. 5 shows as an exemplary embodiment that the two material screws 27, 31 can also be arranged parallel to each other. However, they can also be arranged diametrically opposite or at any other angle.
  • the turntable is driven in the direction of rotation 43 and after the material feed by the feed screw 27, the material to be dried is guided in the direction of arrow 43 over a rotation angle of at least 320 ° under the action of the drying gases on the wire 22 lying in a horizontal plane along and now during a Rotation dried material then passes into the region of the discharge screw 31, which discharges the material in the direction of arrow 33.
  • the turntable dryer 2 is set up so that the material is removed during a complete rotation of the turntable 20.
  • the invention is not limited thereto. It can be provided that the material removal takes place only after several, consecutive rotations, which must be taken to ensure that removed after a certain number of revolutions of the turntable 20, the material can be.
  • the discharge screw 31 can be raised and lowered, in order to be able to lower the material bed 30 after a certain number of drying rotations and to remove the more dried material parts.
  • a worm screw equipped with a worm screw 31 other longitudinal conveyor can be used.
  • FIG. 5 FIG. 2 also shows that the saturated dryer effluents flowing radially outward flow into the exhaust space 37 and are introduced from there into the filter 38.
  • FIG. 5 Only schematic is in FIG. 5 also the recirculation branch 7 is shown, in which it is shown schematically that the recirculated gas is returned to the outlet branch 41 in the inflow pipe 42.
  • FIG. 6 shows a special embodiment of a compressed air cleaning 44, which is arranged in the intermediate region between the material end of the feed screw 27 and the discharge screw 31.
  • the screen belt is cleaned and according to the flow through the pre-cleaned flue gases FIG. 4 prepared and always kept in an optimal working condition.
  • additional vibration generators which vibrate the turntable 20 in the cleaning cycle in order to achieve detachment of firmly adhering particles from the screen belt 22.
  • Such vibrators can operate in the range of 3 to 50 hertz.
  • vibration generators operating in the ultrasonic range can also be used to clean the screen belt 22.
  • FIG. 6 It is only in FIG. 6 shown schematically that a flow of material in the direction of rotation 43 from the feed screw 27 to the AbGermanschnecke 31 takes place.
  • FIG. 7 shows a multiplication of a turntable dryer 2, as in the Figures 4-6 stressing all the details that formed the previous description.
  • the upper two turntable dryer 2a and 2b process different gas streams or gas compositions 48a, 48b from different mixing chambers 11 different firing, while, for example, then in the underlying turntable dryer 2c now clean air with a certain humidity and temperature is introduced and all 3 gas streams over the respective turntable dryer 2 a, 2 b, 2 c are performed.
  • the exhaust gases flowing in the direction of arrow 36a, 36b, 36c into the common exhaust gas space 37 mix there and are fed together to the filter 38.
  • dryer chambers 17a, 17b, 17c are gas-tight separated from each other and it must be ensured that each at the outflow, where the exhaust flows in the directions of arrows 36a, 36b and 36c, suitable pressure control valves 46a, 46b and 46c are arranged, which may for example be designed as a rotary valve or rotary valves.
  • Advantageous in this embodiment is therefore the ability to process different gas streams from different gas sources in a common, driven by a single motor 18 turntable dryer 2a-2c, which is associated with a high production capacity and a variety of possible variations.
  • a different kind of moist wood-based materials can be dried than, for example, in the underlying turntable dryer 2 b or also in the underlying turntable dryer 2 c.
  • the Mollier diagram is a Mollier-hx diagram for humid air with a pressure of 0.966 bar (400,000 m / 10,000 degrees C / 80,000% RH) The temperature is plotted on the left ordinate and the relative humidity on the right ordinate.
  • the lower operating point 1 corresponds to the saturation temperature of the gases after the dryer.
  • the graph also shows a heat balance of the gases when fresh air is used instead of recirculated gases to reach the mixing temperature.
  • the upper and lower operating points 5 - 3 apply with the resulting mixing temperature 4 and the resulting saturation temperature 54.
  • Table 1 indicates that a specific temperature for the air flow 1 and the air flow 2 is provided when two air quantities are mixed, and from this a mixed air with a certain additional temperature is generated.
  • the entry point of the air flow 1 would be in the FIG. 8 (Mollier diagram) at the operating point 5 and has a temperature of 180 ° C.
  • the second air flow would flow at an AP1 with a temperature of for example 60 ° C From both air streams 1 and 2 results in a mixed air at operating point 2 by 100 ° C.
  • the moist material bed 30 When passing through the moist material bed 30 now takes the mixed air at a temperature of 100 ° C at the operating point 2, the moisture from the material bed 30 to complete saturation. With the indicated position 52, the gap between the operating point AP1 and AP2 is represented by the temperature of the gas after the dryer.
  • the mixing point 2 By mixing the boiler exhaust gases and the recirculated gases, the mixing point 2 with a temperature of 100 ° C results. This unsaturated gas mixture flows through the moist material bed and takes up there to the complete saturation, the moisture from the material bed.
  • the cooling of the boiler exhaust gases at the operating point 5 takes place alternatively with fresh air.
  • a lower degree of drying results from the operating point 6, which represents a less favorable position compared to the operating point 2.
  • the upper operating point 5 refers to the temperature of the boiler exhaust gases before entering the dryer.
  • the lower operating point 5 corresponds to the temperature of the cooling air. This results in the operating point 6 as the mixing temperature.
  • the gases mixed at the operating point 6 then absorb the moisture and then the operating point at pos. 53 applies.
  • the pos. 54 analogously shows the saturation temperature at a lower temperature of the mixed-air mixing amount.
  • the saturation temperatures at positions 53 and 54 are lower than 52, which reduces the moisture content, that is, the moisture absorption capacity of the exhaust gases.
  • the higher saturation temperature at position 52 also allows a western higher available condensation energy over the positions at 53 and 54.
  • Tables 1 to 4 thus show calculation examples in the mixing of two air streams under certain temperature and humidity conditions.
  • the air mass of the generated wet mass flow is then shown in each case in the third line from below, and the air mass of the dry mass flow produced is shown in the line below it. This representation applies to all tables 1 to 6.
  • the working point 6 in FIG. 8 refers to Table 5, in which two other air streams 1 and 2 are mixed and a mixed air of also 100 ° C is reached, but under different conditions.
  • Table 5 thus belongs to the upper and lower operating point 5, assuming a 100% humidity.
  • the operating point 3 in the Mollier diagram belongs to the table number 3, whereby only 70% air humidity is assumed.
  • position 52 ensures a much higher drying efficiency in the Mollier diagram than the drying efficiencies at positions 53 and 54.
  • Table 1 1) Mixing 2 air quantities Airflow 1 Airflow 2 mixed air temperature ° C 180000 60,000 100360 Rel. Humidity % 2000 100000 19473 Abs. Humidity g / kg 164170 160754 161893 Density damp kg / m 3 0684 0931 0830 Enthalpy moist kJ / kg 648288 480255 536266 Volume flow humid m 3 / h 8513.415 12463.629 20990.754 Dry mass flow kg / h 5000.000 10000.000 15000.000 amount of condensate kg / h 0000 2) moistening air with water Itemize kW 5115 humidification kg / h 295568 humidification ° C 15,000 Befeuchtungsenthalpie kJ / kg 62302 air in Air out temperature ° C 100360 62082 Rel.
  • Humidity % 19473 100000 Abs Humidity g / kg 161893 181597 Density damp kg / m 3 0830 0918 Enthalpy moist kJ / kg 536266 537493 Volume flow humid m 3 / h 20990.754 19313.037 Dry mass flow kg / h 15000.000 15000.000 3) Mix 2 air quantities Airflow 1 Airflow 2 mixed air temperature ° C 180000 20,000 101006 Rel. Humidity % 2000 70,000 10338 Abs.
  • Humidity g / kg 78609 101036 Density damp kg / m 3 0861 0980 Enthalpy moist kJ / kg 313217 314614 Volume flow humid m 3 / h 14157.937 12693.790 Dry mass flow kg / h 11300.000 11300.000 5)
  • Humidity g / kg 164170 28496 85027 Density damp kg / m 3 0684 1091 0859 Enthalpy moist kJ / kg 648288 330219 Volume flow humid m 3 / h 8513.415 15164.011 Dry mass flow kg / h 5000.000 7000.000 12000.000 amount of condensate kg / h 0000 6)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
EP17000106.9A 2017-01-23 2017-01-23 Procédé de fonctionnement d'un séchoir pour bois humide et installation de séchage Withdrawn EP3351885A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3640572A2 (fr) 2018-10-17 2020-04-22 Rupert Kaindl Procédé et installation de séchage pour bois humide et analogue ayant une qualité de gaz d'échappement améliorée
CN112503913A (zh) * 2020-11-05 2021-03-16 合肥三伍机械有限公司 一种粮食烘干结构
WO2023151990A1 (fr) * 2022-02-14 2023-08-17 Crosset Leon Appareil de séchage de particules avec recyclage d'une partie du gaz chaud

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050229780A1 (en) * 2004-04-09 2005-10-20 Spink Edward F Pollution control in wood products dryer
US20110056090A1 (en) * 2009-09-07 2011-03-10 Andrtitz Technology and Asset Management GmbH Wood material drying plant comprising a rotary dryer
DE102010023391A1 (de) * 2010-06-10 2011-12-15 Pieco Gmbh Biomassetrocknung mittels Rauchgasabwärme
WO2014071800A1 (fr) * 2012-11-07 2014-05-15 阳光凯迪新能源集团有限公司 Procédé et appareil pour le séchage de matière première de type biomasse à l'aide d'effluent gazeux de chaudière à biomasse
EP2889537A1 (fr) 2013-12-04 2015-07-01 Rupert Kaindl Installation de séchage et installation de combustion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050229780A1 (en) * 2004-04-09 2005-10-20 Spink Edward F Pollution control in wood products dryer
US20110056090A1 (en) * 2009-09-07 2011-03-10 Andrtitz Technology and Asset Management GmbH Wood material drying plant comprising a rotary dryer
DE102010023391A1 (de) * 2010-06-10 2011-12-15 Pieco Gmbh Biomassetrocknung mittels Rauchgasabwärme
WO2014071800A1 (fr) * 2012-11-07 2014-05-15 阳光凯迪新能源集团有限公司 Procédé et appareil pour le séchage de matière première de type biomasse à l'aide d'effluent gazeux de chaudière à biomasse
EP2889537A1 (fr) 2013-12-04 2015-07-01 Rupert Kaindl Installation de séchage et installation de combustion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3640572A2 (fr) 2018-10-17 2020-04-22 Rupert Kaindl Procédé et installation de séchage pour bois humide et analogue ayant une qualité de gaz d'échappement améliorée
DE102018125711A1 (de) 2018-10-17 2020-04-23 Rupert Kaindl Verfahren und Vorrichtung zum Betrieb einer Trocknungsanlage für feuchtes Holz und dergleichen mit verbesserter Abgasqualität
CN112503913A (zh) * 2020-11-05 2021-03-16 合肥三伍机械有限公司 一种粮食烘干结构
WO2023151990A1 (fr) * 2022-02-14 2023-08-17 Crosset Leon Appareil de séchage de particules avec recyclage d'une partie du gaz chaud
BE1030270B1 (fr) * 2022-02-14 2023-09-11 Crosset Leon Appareil de séchage de particules avec recyclage d'une partie du gaz chaud

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