CN102704313B - High-speed reverse-net multi-roller drying special type papermaking technology - Google Patents

High-speed reverse-net multi-roller drying special type papermaking technology Download PDF

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CN102704313B
CN102704313B CN201210189618.8A CN201210189618A CN102704313B CN 102704313 B CN102704313 B CN 102704313B CN 201210189618 A CN201210189618 A CN 201210189618A CN 102704313 B CN102704313 B CN 102704313B
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CN102704313A (en
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方汉佐
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Abstract

The invention provides a high-speed reverse-net multi-roller drying special type papermaking technology, which is suitable for a papermaking machine for tissue paper, and is particularly dedicated for manufacturing transfer printing raw paper and decorative raw paper. An existing papermaking machine comprises a rack 204, a forming part 201, a squeezing part 202, a drying part 203 and a reeling part 209. The prior art is changed by a high-speed reverse-net multi-roller drying special type papermaking machine, which mainly comprises a reverse forming net device 210, a squeezing device 220 of a three-roller double-squeezing area, a semi-wet woolen blanket device 230, a multi-roller drying device 240 and a solar drying cylinder cover device 250. A printing performance adapting agent applying device 208 and a paper defect on-line detection control system 290 are additionally arranged on the drying part 203. Thus, the paper forming quality, the printing effect and the transfer effect are improved. The characteristics of lifelike flower shape, micromesh stripe, clear layer and strong stereoscopic impression of patterns are maintained, the luster of printed products is improved, the color of the printed product is very bright, and the like.

Description

The dry paper technology of a kind of inverse net multiple roll at a high speed
Technical field
The present invention relates to a kind of papermaking equipment field.Especially a kind of manufacture tissue machine.Particularly manufacture the Chinese assistant dry extraordinary paper technology of inverse net multiple roll at a high speed of base paper for excursion press mark and decorating base paper.
Background technology
Base paper for excursion press mark is a kind of industrial paper, is mainly used in the transfering printing process of textiles.First various decorative pattern, pattern, color are printed on base paper for excursion press mark; Then will be printed on decorative pattern, the base paper for excursion press mark of pattern and fabric close contact, when control uniform temperature, pressure and the time, dyestuff is transferred to fabric from calico paper, then enters fabric through diffusion, thus reaches painted object.
In transfer printing process, first to pattern, decorative pattern be printed on base paper for excursion press mark, and then be transferred to cloth surface by base paper for excursion press mark, especially in transfer process below, pattern will keep the characteristics such as flower shape is true to nature, decorative pattern is careful, clear layer, third dimension are strong, and this is higher to the requirement of base paper for excursion press mark performance.
Decorating base paper is widely used in furnishing fields.As desk, furniture etc.Need in application to paste the patterns such as the wood grain printed on decorating base paper surface, the quality of decorating base paper and printing performance decide the pattern degree true to nature such as the wood grain of furniture.
In sum, base paper for excursion press mark and decorating base paper require that not only quality of finished paper requirement is high, and printing and transfer performance also require high.Its physical property is specifically:
(1) require that page has enough intensity.Paper surface does not fall hair, not dry linting.In printing and transfer process, can there is certain tension force in paper, speed is faster, and tension force is larger, therefore requires that paper has enough intensity.
(2) exigent smoothness.Only have smoothness high, printing effect is good, especially base paper for excursion press mark and decorating base paper, if because base paper for excursion press mark smoothness is poor, makes the dye sublimation rate on paper inconsistent.Therefore, transfer on cloth and also can thicken.
According to above requirement, production base paper for excursion press mark and decorating base paper form in requisition for softwood pulp and hardwood pulp according to certain proportioning, and require that most hardwood pulp is on top layer, overwhelming majority softwood pulp is at bottom, so just can print better effects if during transfer, smoothness reaches more than 1000 seconds.(bibliography Fang Hanzuo regenerates production and the application [J] of base paper for excursion press mark. Shanghai papermaking, 1999 (3): 13)
At present, all adopt general paper machine at manufacture base paper for excursion press mark, be difficult to reach requirement.Existing technology, production efficiency is low, and manufacturing cost is corresponding too high, and product quality is difficult to reach market demands.
Fig. 1 is existing paper machine schematic diagram, and existing paper machine comprises: frame 104, forming section 101, press section 102, drying section 103 and reeling end 109.
In paper-making process, forming section 101 is processes of drainage and formation, and by a large amount of research and practices, we find to the more important thing is a process precipitated.So in forming process, most softwood pulp is deposited in the bottom of paper web 126, otherwise most hardwood pulp is on the top layer of paper web 126.Adopt the paper manufactured by existing general paper machine be most softwood pulp in front, and the reasonable most hardwood pulp of printing adaptability is at reverse side.
Although the tissue paper such as base paper for excursion press mark and decorating base paper requires it is not very large to the smoothness of reverse side and glossiness, the too low smoothness that directly can affect front in batching of smoothness of reverse side.So be provided with lower drying cylinder 107 and soft calendaring 105 facility in existing technology after paper web 126 goes out drying cylinder 147.Need to consume a large amount of steam and electric energy.Especially soft calendaring 105, needs steam and two drive station of 0.4Mpa, needs two driven by motor.
In order to improve the drying capacity of drying cylinder 147, be generally provided with dryer hood 150, dryer hood 150 adopts double layer material to make, and heat to dryer hood 150 with live steam in interlayer, air pressure is approximately 0.1Mpa, so consumption coal consumption electricity is all very high.
In sum, the one-tenth paper 106 manufactured by existing paper machine be softwood pulp in front, and the reasonable hardwood pulp of printing adaptability is at one-tenth paper 106 reverse side.Thus have influence on printing effect and the transfer effect of ink, what is more, can lower the gloss of printing, make ink seem, color is bright-coloured not waits printing defects.Lower drying cylinder 107 and soft calendaring 105 facility, energy resource consumption is large, carbon monoxide and CO2 emissions are large waits deficiency.Therefore, solve production efficiency low, reduce energy resource consumption, advocate clean low-carbon (LC) and produce, improve the quality of products, become the actual needs of production.
Summary of the invention
For the above-mentioned deficiency in prior art, the technical problem to be solved in the present invention is to provide a kind of manufacture tissue paper papermaking process.Especially the Chinese assistant dry extraordinary paper technology of inverse net multiple roll at a high speed of base paper for excursion press mark and decorating base paper is manufactured.
As in Figure 2-4, the technical solution adopted for the present invention to solve the technical problems is: the dry paper technology of a kind of inverse net multiple roll at a high speed, wherein processing step is as follows: (1) paper pulp is injected in after on reverse forming net device is formed paper web by head box uniformity, and the rotation direction of described reverse forming net device is contrary with complete machine rotation direction; (2) after paper web has arrived the suction couch roll of described reverse forming net device, entered lower felt (218), entered reverse pressing device (220) with transporting felt (228) simultaneously and dewater; (3) described paper web goes out described reverse pressing device (220) and departs from lower felt afterwards, and the reverse side of paper web upward, operates with transporting felt; (4) after the vacuum suction roller (234) of more than half wet felt device (230) aspirates, paper web (226) is glazing felt (238) running of 40% with moisture content percentage by weight; (5) then paper web upwards runs with deflector roll, facing up of last paper web, contact with drying cylinder (247) under the effect of a carrying roller (241), carry out drying, the most hardwood pulps being now positioned at paper web front are attached to drying cylinder (247) surface, and reverse side is softwood pulp; (6) between a carrying roller 241 and two carrying rollers 242, glazing felt 238 is departed from by woollen blanket diastole roller and paper web 226; (7) wash with the wash mill that drips after paper web goes out multiple roll drying device, then by suction box, moisture content is siphoned away; (8) paper web enters dryer hood subsequently; (9) finally batch;
Described forming section 201 comprises head box 211, breast roll 212, suction couch roll 217 and reverse forming net device 210;
Described press section 202 adopts the pressing device 220 of three roller two nips, the pressing device 220 of described three roller two nips comprises pressure roller 223, vacuum furnace 221, plain-barreled roll 222, pressure roller 223 applies pressure to vacuum furnace 221 and plain-barreled roll 222 simultaneously, wherein first is vacuum furnace 221, and second is plain-barreled roll 222, and pressure roller 223 doubles as later roller effect;
Described drying section 203 comprises half wet felt device 230, drying cylinder 247, multiple roll drying device 240 and solar energy dryer hood device 250.
Described half wet felt device 230 comprises, and moisture content is the glazing felt 238 of 40%, and drip wash mill 231, suction box 235, the dry baby dryer 237 of glazing felt and vacuum suction device 234.
Described drying cylinder 247 is dried paper web 226 by the mode of heating, makes paper web 226 drying become the device of paper 206.
Described multiple roll drying device 240 is included in the pressure exerting arrangement being provided with multiple dryer roll and respective dryer roll around drying cylinder 247 according to different angles.Described pressure exerting arrangement is according to need of production, exerts pressure thus the device of exerting pressure to drying cylinder 247 to respective dryer roll.
Described solar energy dryer hood device 250 comprises dryer hood 251, solar energy heating assembly 252, hot-water storage tank 253, the auxiliary Automatic-heating assembly 254 of temperature control electric.
Described hot-water storage tank 253 adopts double-decker and inner surface is coated with mercury, to reach the effect of insulation.
Also be provided with printing performance at drying section 203 and adapt to agent bringing device 208, described printing performance adapts to the device that agent bringing device 208 is used to add page 249 printing performance adaptation agent 299.Paper defects online detection and control system 290 is also provided with between drying cylinder 247 and reeling end 209.
1. reverse forming net device 210 described in, its rotation direction is contrary with complete machine rotation direction.Paper machine divides right hand machine and right hand machine according to rotation direction, and Fig. 2 is right hand machine application example of the present invention.As shown in Figure 2: paper pulp 216 defines paper web 226 on reverse forming net device 210, after pressing device 220 is aspirated by vacuum suction roller 234, it is dry that glazing felt 238 is transported to drying cylinder 247 place.By just so anti-, make most hardwood pulp in the front becoming paper 206, most softwood pulp is becoming the back side of paper 206.
2. press section 202 adopts the pressing device 220 of three roller two nips.The pressing device 220 of described three roller two nips, is characterized in that first is vacuum furnace 221, and second is plain-barreled roll squeezing 222.Vacuum furnace 221 is known well than the dehydrating effect of plain-barreled roll 222.
3. be provided with half wet felt device 230 and multiple roll drying device 240 at drying section 203.Described half wet felt device 230 is by existing for drying section 203 glazing felt 238, goes out two road suction boxs 235 through the dry baby dryer 237 of drip wash mill 231 and glazing felt, enter the moisture control before a carrying roller 241 about 40% glazing felt 238.The dry baby dryer 237 of described glazing felt adopts the large flash steam of drying cylinder 247 and the condensed water of discharge as temperature rise material, and does not want drive station.
4. multiple roll drying device 240 described in, according to different angles cloud cloth around drying cylinder 247, and executes stressed device by respective pressure exerting arrangement to drying cylinder 247.
5. before paper web 226 enters a carrying roller 241, moisture content is still very high, water content is about 68%, so the water evaporates amount of paper web 226 is large when a carrying roller 241, after paper web 226 goes out a carrying roller 241, a large amount of steam between drying cylinder 247 and paper web 226 has stronger impulsive force to paper web 226, now paper web 226 declines greatly with the degree of pasting of drying cylinder 247, if when a carrying roller 241, paper web 226 is set to 100 with the degree of pasting of drying cylinder 247, when entering two carrying rollers 242, its degree of pasting is approximately about 70, under the linear pressure of two carrying rollers 242, paper web 226 is made to bring up to 100 again with the degree of pasting of drying cylinder 247.Because paper web 226 is when a carrying roller 241, its moisture content is higher than glazing felt 238, and the moisture content of paper web 226 penetrates in glazing felt 238.Same before entering three carrying rollers 243, paper web 226 drops to about 70 again with the degree of pasting of drying cylinder 247, and under the linear pressure of three carrying rollers 243, paper web 226 brings up to 100 again with the degree of pasting of drying cylinder 247.The drying effect of effective raising drying cylinder 247.
6. smooth carrying roller 244 material is rubber roll, its not coated woollen blanket, under the linear pressure of the 700N/cm of light carrying roller 244, effectively eliminates the felt mark on paper web 226 reverse side, more effectively improves smoothness and the glossiness in paper web 226 front.Reach the equivalent effect of lower drying cylinder 107, therefore without the need to re-using lower drying cylinder 107.Under the linear pressure of light carrying roller 244, again improve degree of pasting to 100, improve the drying capacity of drying cylinder.Effective raising speed of a motor vehicle.
7. the not coated woollen blanket of optical press roll 245, when paper web 226 enters optical press roll 245, its moisture content about about 11%, has now finalized the design almost, so be called page 246.
8. the present invention is provided with dryer hood 251 above drying cylinder 247, in process of production, effectively utilizes the waste heat at drying cylinder 247 two ends.
9. be provided with printing performance at drying section 203 and adapt to agent bringing device 208.Printing performance is applied to paper web 226 and adapts to agent 299 thus the printing effect and the transfer effect that improve into paper 206.The more colored shape of pattern is true to nature, decorative pattern is careful, clear layer, third dimension strong, and improve the gloss of printing, color is very bright-coloured.
10. online paper defect testing control system 290 effectively can be controlled to the quality of paper 206.
The invention has the beneficial effects as follows:
1, paper web 226 is by after reverse forming net device 210 and reversed operation pressing device 220, the effect obtained is just anti-, the hardwood pulp face of paper web 226 is attached to the upper drying of drying cylinder 247, paper manufactured by reverse forming net device 210 paper machine be most hardwood pulp in paper 206 front, and most softwood pulp is in reverse side of paper.The printing adaptability of hardwood pulp can be good.The overwhelming majority is the one-tenth paper 206 that hardwood pulp paper web 226 face becomes front, improves printing effect and transfer effect.
2, the application of the pressing device 220 of three roller two nips, effectively can improve into the quality of paper 206, improves tightness and the mass dryness fraction of paper web 226 simultaneously.
3, the application of half wet felt device 230 and multiple roll drying device 240, can save lower drying cylinder 107 and soft calendaring 105, and only soft calendaring 105 is 2 drive station, and by 2 driven by motor, add the steam of 0.4Mpa air pressure, steam accounts for about 30% of complete machine consumption.
4. printing performance adapts to the application of agent, improves the effect of printing effect and transfer printing.
5. the application of solar energy dryer hood device 250.Energy resource consumption is equivalent to 0, can save consumption coal about 15% on year-on-year basis, water saving 15%.
6. Fig. 3 is water circulation schematic diagram of the present invention, 90 DEG C of condensations (the 90 DEG C of Condensedwater) water that drying cylinder 347 is discharged enters in the dry baby dryer 337 of woollen blanket of half wet felt device 230, the dry baby dryer 337 of woollen blanket is discharged 65 DEG C of condensed waters (65 DEG C of Condensed water) and is poured in solar heat collector 252, the hot water (Hot Water) of solar heat collector 252 pours in hot-water storage tank 253, in hot-water storage tank 253, hot water pours in dryer hood 251 interlayer, the condensed water of discharging due to the dry baby dryer 337 of woollen blanket is 65 DEG C, so be the hot water of more than 60 DEG C from hot-water storage tank 253 hot water poured into dryer hood 251 interlayer.The water (Water) of discharging from dryer hood 251 interlayer still has temperature, is flowed back in boiler (Boiler) by pipeline.
7. the Chinese is helped the complete machine comprehensive energy consumption of the dry special paper of inverse net multiple roll and existing paper machine at a high speed and is manufactured paper with pulp ability on year-on-year basis: improving the optimum dry speed of a motor vehicle is existing 1.9 times.Ton paper integrated power-saving 65% on year-on-year basis, water saving 35%, economizes on coal 45%.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is existing paper machine schematic diagram.
Fig. 2 is the invention process schematic diagram.
Fig. 3 water circulation flow chart of the present invention.
Fig. 4 is dryer hood 251 explosion type structure chart figure.
Detailed description of the invention
The present invention is the example adopting right hand machine, and unrestricted practical range of the present invention, all equivalences done according to structure, feature and the principle described in the present patent application the scope of the claims change or modify, and all should be included in the present patent application the scope of the claims.
As shown in Figure 2: a kind of Chinese assistant dry special paper of inverse net multiple roll at a high speed manufacturing the tissue paper such as base paper for excursion press mark and decorating base paper, described Chinese assistant is the dry special paper of inverse net multiple roll at a high speed, is adapted to agent bringing device 208 formed by pressing device 220, the half wet felt device 230 of reverse forming net device 210, three roller two nip, multiple roll drying device 240, solar energy dryer hood device 250, printing performance.Described reverse forming net device 210, its rotation direction is contrary with complete machine rotation direction.Reverse forming net device 210, is characterized in that: rotation direction is contrary with paper delivery direction.Specifically: this example is right hand machine, the rotation direction of reverse forming net device 210 is left.Wherein processing step is as follows: (1) paper pulp is injected in after on reverse forming net device is formed paper web by head box uniformity, and the rotation direction of described reverse forming net device is contrary with complete machine rotation direction; (2) after paper web has arrived the suction couch roll of described reverse forming net device, entered lower felt (218), entered reverse pressing device (220) with transporting felt (228) simultaneously and dewater; (3) described paper web goes out described reverse pressing device (220) and departs from lower felt afterwards, and the reverse side of paper web upward, operates with transporting felt; (4) after the vacuum suction roller (234) of more than half wet felt device (230) aspirates, paper web (226) is glazing felt (238) running of 40% with moisture content percentage by weight; (5) then paper web upwards runs with deflector roll, facing up of last paper web, contact with drying cylinder (247) under the effect of a carrying roller (241), carry out drying, the most hardwood pulps being now positioned at paper web front are attached to drying cylinder (247) surface, and reverse side is softwood pulp; (6) between a carrying roller 241 and two carrying rollers 242, glazing felt 238 is departed from by woollen blanket diastole roller and paper web 226; (7) wash with the wash mill that drips after paper web goes out multiple roll drying device, then by suction box, moisture content is siphoned away; (8) paper web enters dryer hood subsequently; (9) finally batch.
Described half wet felt device 230 is by existing for drying section glazing felt 138, and through dripping, wash mill 231 and drying device go out two road suction boxs 235, enter the moisture control before a carrying roller 241 about 40% woollen blanket.
Described multiple roll drying device 240, be provided with drying cylinder 247 in frame 204, drying cylinder 247 is according to right handed, around drying cylinder 247, be provided with carrying roller 241, two carrying roller 242, three carrying roller 243, light carrying roller 244, optical press roll 245 according to different angles.
Paper pulp is unanimously injected on reverse forming net device 210 by head box 211 with suitable width, angle, speed, uniform flow, described reverse forming net device 210 is by the forming net 219 of the member supporting such as breast roll 212, suction couch roll 217, and centre is provided with the formations such as forming board 213, Wiper blade 214, suction box 215.The rotation direction of reverse forming net device 210 is contrary with complete machine rotation direction.After paper web 226 has arrived suction couch roll 217, paper web 226 enters lower felt 218, enters pressing device 220 simultaneously dewater with transporting felt 228, and after going out pressing device 220, paper web 226 departs from lower felt 218, the reverse side of paper web 226 upward, operates with transporting felt 228.After the vacuum suction roller 234 of more than half wet felt device 230 aspirates, the glazing felt 238 that paper web 226 is 40% with moisture content operates, and upwards runs with deflector roll, facing up of last paper web 226, contacts, carry out drying under the effect of a carrying roller 241 with drying cylinder 247.Most hardwood pulps that the glazing felt 238 being 40% by moisture content realizes paper web 226 front are attached to drying cylinder 247 surface, and the front defining paper web 226 is the overwhelming majority is hardwood pulp, and reverse side is softwood pulp.
Paper web 226 is the glazing felt 238 of 40% with moisture content, enter bottom drying cylinder 247, under the linear pressure of a carrying roller 241, the moisture content of paper web 226 to penetrate in glazing felt 238 and goes out a carrying roller 241 along with glazing felt 238, when going out a carrying roller 241, paper web 226 is attached to drying cylinder 247 surface, between a carrying roller 241 and two carrying rollers 242, glazing felt 238 is departed from by woollen blanket diastole roller and paper web 226, is the moisture content in order to better evaporate in paper web 226.Now paper web 226 evaporates a large amount of steam and impacts paper web 226, the degree of pasting of paper web 226 is progressively reduced along with the rotation of drying cylinder 247, when a carrying roller 241, its degree of pasting is 100, time so to two carrying rollers 242, its degree of pasting is approximately about 70, under the linear pressure of two carrying rollers 242, paper web 226 and the degree of pasting of drying cylinder 247 get back to again 100.Improve the tightness of paper web 226 and quantitative tightness simultaneously.Between two carrying rollers 242 and three carrying rollers 243, moisture content be 40% glazing felt 238 departed from by woollen blanket diastole roller and paper web 226, be equally also the moisture content in order to better evaporate in paper web 226.Now the same evaporate vapor of paper web 226 impacts paper web 226, the degree of pasting of paper web 226 progressively reduces along with the rotation of drying cylinder 247, during to three carrying rollers 243, its degree of pasting is approximately about 70, under the linear pressure of three carrying rollers 243, paper web 226 and the degree of pasting of drying cylinder 247 get back to again 100, again to improve the degree of pasting of paper web 226 and drying cylinder 247.
Paper web 226 is close to drying cylinder 247 surface and is remained in operation with drying cylinder 247, and glazing felt 238 is departed from by deflector roll roller and paper web 226, before entering the dry baby dryer 237 of woollen blanket, be provided with drip wash mill 231 and suction box 235.The described wash mill 231 that drips walks up and down also to regulate the device of the frequency of dripping.Described suction box 235 is the devices residue on glazing felt 238 and moisture content siphoned away, between the dry baby dryer 237 of wash mill 231 woollen blanket that drips.Its effect is equivalent to the dripping irrigation principle in desert.Second suction box 235 is provided with enter vacuum suction roller 234 after woollen blanket departs from the dry baby dryer 237 of woollen blanket before, described second suction box 235 is the water absorbers to the back side relatively carrying paper web 226, is mainly siphoned away by the moisture content also do not evaporated when the dry baby dryer 237 of woollen blanket heats.Go out the moisture content about 40% of glazing felt 238 during second suction box 235.
Light carrying roller 244 is provided with before paper web 226 enters dryer hood 251, the not coated woollen blanket of light carrying roller 244, so under the linear pressure of light carrying roller 244, effectively can improve the reverse side felt mark of paper web 226, more effectively improve smoothness and the glossiness in front, improve deflection, tightness simultaneously and again improve degree of pasting.
Paper web 226 is provided with warm-air pipe 255 before entering dryer hood 251, the waste heat that drying cylinder driving end distributes by described warm-air pipe 255 naturally by air blast hot blast blowed to be close to drying cylinder 247 surface paper web 226 on, most of cold air can be effectively stoped to enter dryer hood 251 inner, reduce the loss of dryer hood 251 internal heat, the air velocity of dryer hood 251 inside can also be accelerated, the inner moist steam of dryer hood 251 is got rid of fast, improves drying effect.
Steam is not used in the interlayer of dryer hood 251, adopt the condensed water (Condensed water) that dry baby dryer 337 discharge temperature is about 65 DEG C, heated by solar energy heating assembly 252, temperature about 90 DEG C after solar components 252 heats is injected in hot-water storage tank 253, by hot-water storage tank 253, hot water is injected in the interlayer of dryer hood 251, and in dryer hood 251 interlayer in be provided with the auxiliary Automatic-heating assembly 254 of temperature control electric, keep the hot water temperature in the interlayer of hot dryer hood 251 to be more than 70 °.
Dryer hood 251 is near the place of drying cylinder 247 operating surface one end crescent hole 256, and be the dead angle of existing dryer hood 150, air flow property is little, easily forms water droplet.Open a crescent hole 256 herein, make it become the fastest position of flow velocity on the contrary.Also be provided with baffle plate below crescent hole 256, the openings of sizes of crescent hole 256 can be regulated, to regulate the flow velocity of crescent hole 256.Outside hand hole 257 is the baffle plates for operating below crescent hole 256.
Paper web 226 go out dryer hood 251 laggard enter optical press roll 245 time, paper web 226, under the linear pressure of optical press roll 245, exceedes the effect of soft calendaring 105, because now the moisture content of page 246 is 11%, and when entering soft calendaring 105, the moisture content of page 246 is 8%.The smoothness of page 246, glossiness, tightness improve greatly, and the fibr tissue of page 246 is tightr, and the physical property of page 246 improves, and tear-resistant degree has the raising of matter, thus can by existing follow-up soft calendaring 105 device removing.
Between drying cylinder 247 and reeling end 209, be also provided with paper defects online detection and control system 290, online paper defect testing control system 290 effectively can be controlled to the quality of paper 206.
Fig. 3 is water circulation schematic diagram of the present invention, 90 DEG C of condensations (the 90 DEG C of Condensedwater) water that drying cylinder 347 is discharged enters in the dry baby dryer 337 of woollen blanket of half wet felt device 230, the dry baby dryer 337 of woollen blanket is discharged 65 DEG C of condensed waters (65 DEG C of Condensed water) and is poured in solar heat collector 252, the hot water (Hot Water) of solar heat collector 252 pours in hot-water storage tank 253, in hot-water storage tank 253, hot water pours in dryer hood 251 interlayer, the condensed water of discharging due to the dry baby dryer 337 of woollen blanket is 65 DEG C, so be the hot water of more than 60 DEG C from hot-water storage tank 253 hot water poured into dryer hood 251 interlayer.The water (Water) of discharging from dryer hood 251 interlayer still has temperature, is flowed back in boiler (Boiler) by pipeline.Reduce use amount and the coal consumption of water, the steam (Steam) of boiler (Boiler) supplies drying cylinder 347.Obviously can find out, decrease the consumption coal of boiler (Boiler), water consumption, power consumption.
In the fabrication process, printing performance adapts to agent bringing device 209 pairs of paper webs 226 and adds printing performance adaptation agent, and the effect of the printing and transfer that make into paper 206 reaches optimum level.

Claims (2)

1. a high speed is against the dry paper technology of net multiple roll, wherein processing step is as follows: (1) paper pulp is injected in after on reverse forming net device is formed paper web by head box uniformity, and the rotation direction of described reverse forming net device is contrary with complete machine rotation direction; (2) after paper web has arrived the suction couch roll of described reverse forming net device, entered lower felt (218), entered reverse pressing device (220) with transporting felt (228) simultaneously and dewater; (3) described paper web goes out described reverse pressing device (220) and departs from lower felt afterwards, and the reverse side of paper web upward, operates with transporting felt; (4) after the vacuum suction roller (234) of more than half wet felt device (230) aspirates, paper web (226) is glazing felt (238) running of 40% with moisture content percentage by weight; (5) then paper web upwards runs with deflector roll, facing up of last paper web, contact with drying cylinder (247) under the effect of a carrying roller (241), carry out drying, the most hardwood pulps being now positioned at paper web front are attached to drying cylinder (247) surface, and reverse side is softwood pulp; (6) between a carrying roller (241) and two carrying rollers (242), glazing felt (238) is departed from by woollen blanket diastole roller and paper web (226); (7) wash with the wash mill that drips after paper web goes out multiple roll drying device, then by suction box, moisture content is siphoned away; (8) paper web enters dryer hood subsequently; (9) finally batch.
2. high speed according to claim 1 is against the dry paper technology of net multiple roll, and it is characterized in that the suction box in step (7) has two groups, wherein the residue on glazing felt and moisture content siphon away by one group of suction box; Another group suction box absorbs water to the back side relatively carrying paper web, the moisture content also do not evaporated is siphoned away when the dry baby dryer of woollen blanket heats.
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