CN109629298A - A method of corrugating medium is reproduced using waste paper - Google Patents
A method of corrugating medium is reproduced using waste paper Download PDFInfo
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- CN109629298A CN109629298A CN201811541443.6A CN201811541443A CN109629298A CN 109629298 A CN109629298 A CN 109629298A CN 201811541443 A CN201811541443 A CN 201811541443A CN 109629298 A CN109629298 A CN 109629298A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
- D21C5/025—De-inking
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of methods using waste paper reconstruction corrugating medium, its method is to be prepared by pulping step, highly concentrated slug removing step, multistage screening step, centrifugal dehydration step, oscillation dry fiber step, paper stock and be pressed into paper step, completes the production of corrugating medium.It can be reduced compared with prior art using chemical agent, reduce environmental disruption；The electric energy of drying steps before paper stock capable of being suppressed uses, and is carried out with more high efficiency, more environmentally-friendly mode, and drying effect is better.
Description
Technical field
The present invention relates to regenerated papermaking technical fields, more particularly, to a kind of method using waste paper reconstruction corrugating medium.
Background technique
Currently, being trend of the times using reclaimed waste paper recycled paper.75% can be reduced than log paper pulp using regenerated papermaking
Air pollution, 35% water pollution, 60% with water, 40% energy consumption.It is empty that a large amount of landfills can be reduced using regenerated papermaking
Between occupancy.According to statistics, one ton of waste paper can produce 850 kilograms of the good recycled writing paper of quality, save 3 cubic metres of timber, savingization
It 300 kilograms of work raw material, economizes on coal 1.2 tons, economizes on electricity 600 degree.
Corrugating medium is reproduced using waste paper, is the column that must be striven in paper industry.Utilize the mistake of waste paper reconstruction corrugating medium
Cheng Zhong needs to classify to waste paper, pulping, slagging-off, deinking, in the biggish situation of yield, can specific aim subtract
The production cost of small part link has great significance to reducing for whole production cost.It is anti-in deinking step therein
Answer temperature that need to be higher than 65 DEG C, energy consumption is larger；In the deinking process of alkaline deinking agent, it is easy to appear fiber and aoxidizes,
Turn yellow, influences whiteness；The usage amount of deinking agent is up to the 3%~5% of opposite waste paper oven dry weight, Sewage difficulty
Greatly.
Summary of the invention
In view of the deficienciess of the prior art, the object of the present invention is to provide a kind of sides using waste paper reconstruction corrugating medium
Method can directly produce corrugating medium using roughing waste paper material, simplify the production stage of regeneration corrugating medium, reduce to ring
The pollution in border, improves paper performance, reduces production cost.
It is a further object of the present invention to provide a kind of methods using waste paper reconstruction corrugating medium, can improve drying effect
Rate, reduces the energy consumption of production process, and improves papermaking quality.
To achieve the goals above, the technical scheme adopted by the invention is that, it is a kind of to use waste paper reconstruction corrugating medium
Method includes the following steps:
1) pulping step, including following sub-step:
1.1) it is broken to be put into highly concentrated waterpower by first time highly concentrated hydraulic pulping step for waste paper, deinking agent and compositional biological enzyme
Pulp grinder carries out highly concentrated hydraulic pulping for the first time, and compositional biological enzyme includes cellulase, hemicellulase, lipase and lipase, fibre
Tieing up the score ratio between plain enzyme, hemicellulase, lipase and lipase is 1~1.5:1~1.8:1~1.9:1.5~2.5, broken
The control of slurry temperature degree is 40~65 DEG C, and pulping time is 5~10min, obtains the first secondary stock, and wherein waste paper selects high-quality old newsprint
Or useless corrugating medium, the additional amount of deinking agent are the 0.1%~1.8% of opposite waste paper dry weight, deinking agent preferred concentration is 30~
45% neutral deinking agent, the additional amount of compositional biological enzyme are the 0.1~0.8% of opposite waste paper dry weight；
1.2) step is stood, after the completion of highly concentrated hydraulic pulping step for the first time, stops high density hydraulic pulper, it is past highly concentrated
Inert gas is added in the pulping cylinder of hydrabrusher, pulping cylinder is closed after being full of inert gas in pulping cylinder, makes first to give up
Paper pulp stands 20~45min in pulping cylinder, and the temperature for controlling the first secondary stock is 40~65 DEG C；
1.3) second of highly concentrated hydraulic pulping step after standing step, starts high density hydraulic pulper, useless to first
Paper pulp carries out second highly concentrated hydraulic pulping, and the temperature for controlling the first secondary stock is 50~70 DEG C, and pulping time is 5~
10min obtains the second secondary stock；
In water during pulping, the ink in waste paper fibre is activated, processing step is simplified, improves deinking rate.
2) highly concentrated slug removing step send the second secondary stock to highly concentrated deslagging device and carries out highly concentrated slagging-off, and slagging-off paper pulp is made；
3) concentration of slagging-off paper pulp is adjusted to 10~15% by blanching step, send to Bellmer, combined bleach powder is added,
It stirs evenly, obtains bleached pulp, the additional amount of combined bleach powder is 0.5~2kg/m3First removes slurry, combined bleach powder packet
Calcium hypochlorite and SODIUM PERCARBONATE are included, the content of calcium hypochlorite is 40~60%, and the specific gravity of calcium hypochlorite and SODIUM PERCARBONATE is 3:1,
Mixing speed is 250~400rpm, and mixing time is 20~45min；
4) thickening filtration step send bleached pulp to shaking screen and carries out thickening filtration, obtains concentration paper stock, wherein sieve
Mesh number is 140~230 mesh, and the frequency of oscillation of shaking screen is 15~20KHZ；
5) centrifugal dehydration step is sent concentration paper stock to centrifugal dehumidifier and is dehydrated, and obtaining water content is 5~10%
Dehydration paper stock, wherein the dehydration tube of centrifugal dehumidifier is provided with sieve, and sieve mesh number is 250~400 mesh, centrifugal dehydration dress
The dehydrating speed set is 800~1500rpm, and the runing time of centrifugal dehumidifier is 15~35min；
6) adhesive mixing step send dewa-tered pulp to Pneumatic blender and carries out adhesive mixing, keeps adhesive uniform
Waste paper fibre is depended on, atomizer is provided in Pneumatic blender, adhesive mixing step includes following sub-step:
6.1) firstly, 1~3min of Pneumatic blender is run, to break up dehydration paper stock；
6.2) adhesive then, is sprayed on by atomizer by dehydration paper stock, atomizer persistently sprays 5~10 seconds,
The additional amount of adhesive is 20~40ml/kg dewa-tered pulp；
6.3) it finally, continuing to run 2~5min of Pneumatic blender, to realize that dewa-tered pulp is uniformly mixed with adhesive, obtains
The paper stock to before pressing；
7) dry fiber step is vibrated, paper stock before pressing is sent to oscillation drying device and carries out further drying and dehydrating, with
And the adhesive for uniformly depending on waste paper fibre is activated, wherein oscillation drying device includes vibrating conveyer chain and heat source,
Heat source is covered in oscillation conveyer chain, vibrates and is provided with several pallets and an at least rail for being used to place the preceding paper stock of pressure in conveyer chain
Road, tray motion are provided with one wave part in track, track, when tray motion is when track, the bottom of pallet and the wave of track
Portion carries out supporting cooperation, and to realize, paper stock vibrates during heating before the pressure being placed on pallet, paper stock before pressing
Water content is reduced to 4~8%；
8) it is pressed into paper step, paper stock before the pressure by oscillation dry fiber step is put into nipper and carries out roll-in,
Paper roll is obtained into, is wherein provided with heating roller in nipper, paper stock before pressing is carried out being pressed into paper by heating roller, heating roller
Press temperature is 150~250 DEG C.
Corrugating medium is produced using roughing waste paper material, the production stage of recycled paper is simplified, reduces the pollution to environment,
Paper performance is improved, production cost is reduced.
In further technical solution, in the pulping step, which selects carbon dioxide or nitrogen.
In further technical solution, in the highly concentrated slug removing step, the waste water which is discharged is led to
It crosses scalping device to be filtered, then filtered waste water is sent to wastewater disposal basin and is staticly settled, it is quiet at least through 5 hours
After setting precipitating, waste water can be used for participating in the pulping step.In the present invention, the waste water being discharged by highly concentrated deslagging device, still
It containing deinking agent and compositional biological enzyme, but since waste water largely has the ink particle separated, is staticly settled,
Secondary use can be carried out to waste water.
In further technical solution, which is provided with sieve, and sieve mesh number is 50~100 mesh.
It is 40~45 DEG C the temperature control of the slagging-off paper pulp in the blanching step in further technical solution.
In further technical solution, in the adhesive mixing step, which selects oar blade type stirring
Machine, paddle mixer include at least one blade, which rotates the top for being installed on blade, atomizer and blade
It carries out coaxial reversely rotate to cooperate, to realize that adhesive is sufficiently combined with waste paper fibre.
In further technical solution, in the adhesive mixing step, which contains 0.1%~0.3%
Carboxymethyl cellulose (CMC).The adhesive force of adhesive can be enhanced.
In the technical solution into one, in the oscillation dry fiber step, it is preferable to use daylight for the heat source, also can be selected
Heating lamp or heat-generating pipe are used as heat source, are used daylight as drying source, can further be saved production cost.
In the technical solution into one, the mud and sewage processing step after the first time highly concentrated hydraulic pulping step,
From high density hydraulic pulper bottom exclude weight slag, by mud and water separating equipment by weight slag in sewage and sludge separate, will
Sludge is delivered to sludge drying treatment equipment drying and other treatment, and the sludge of desiccation is sent and is burned in power station, in full combustion sludge
Residual fibers, convert thereof into thermal energy or electric energy, sludge incineration product is net to sewage by sewage transport as Crop fertilizer
Change processing equipment purified treatment, the cycling use of water purified is transported to high density hydraulic pulper again, realizes sewage zero-discharge, follows
Ring shredded paper water solves the problem of water consumption in the maximum production link of paper-making process water consumption, clean and environmental protection.
The invention has the advantages that compared with the prior art:
The present invention produces corrugating medium using roughing waste paper material, simplifies the production stage of regeneration corrugating medium, reduces
Pollution to environment, improves paper performance, reduces production cost；
The present invention promotes the activation of ink to separate by compound biological enzyme, reduces the usage amount of deinking agent, alleviates dirt
Water process pressure, reduces production cost, improves fibre whiteness；
The present invention in the pulping cylinder of high density hydraulic pulper by adding after the completion of highly concentrated waterpower shredded paper step for the first time
Enter inert gas, squeeze away the oxygen in pulping cylinder, to avoid fiber jaundice；
The present invention improves drying efficiency, reduces energy consumption, and advanced optimize by oscillation heat drying paper stock
Paper stock drying effect, and the adhesive for being attached to waste paper fibre is more fifty-fifty activated, then improve the quality of paper.
The sludge of desiccation is sent and is burned in power station by present invention process, the residual fibers in full combustion sludge, by its turn
Change thermal energy or electric energy into, sludge incineration product is as Crop fertilizer, at sewage transport to sewage purification treatment equipment purification
Reason, the cycling use of water purified are transported to the first pulp crushing apparatus again, realize sewage zero-discharge, recycle shredded paper water, solve to make
Problem of water consumption in the maximum production link of paper process water amount, clean and environmental protection.
Specific embodiment
As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
A method of corrugating medium being reproduced using waste paper, is included the following steps:
1) pulping step, including following sub-step:
1.1) first time highly concentrated hydraulic pulping step,
Waste paper, deinking agent and compositional biological enzyme investment high density hydraulic pulper are carried out highly concentrated hydraulic pulping for the first time,
Compositional biological enzyme includes cellulase, hemicellulase, lipase and lipase, cellulase, hemicellulase, lipase and rouge
Score ratio between enzyme is 1:1:1:1.5, and the control of pulping temperature is 45 DEG C, and pulping time 7min obtains the first secondary stock,
Middle waste paper selects high-quality old newsprint or useless corrugating medium, and the additional amount of deinking agent is the 1% of opposite waste paper dry weight, and deinking agent is preferred
The neutral deinking agent that concentration is 30%, the additional amount of compositional biological enzyme are the 0.5% of opposite waste paper dry weight.Ink with it is interfibrous
Binding site has biggish stress, and compositional biological enzyme acts preferentially on these regions, and compositional biological enzyme can discharge a variety of viscosity
Semi-saturation acidic materials have preferable intermiscibility, do not have affinity between fiber between semi-saturation acidic materials and ink
And intermiscibility, semi-saturation acidic materials penetrate between the fiber of waste paper, and ink and interfibrous connection can be made to become loose；
1.2) step is stood, after the completion of highly concentrated hydraulic pulping step for the first time, stops high density hydraulic pulper, it is past highly concentrated
Inert gas is added in the pulping cylinder of hydrabrusher, pulping cylinder is closed after being full of inert gas in pulping cylinder, makes first to give up
Paper pulp stands 30min in pulping cylinder, and the temperature for controlling the first secondary stock is 45 DEG C, squeezes away the air in pulping cylinder, makes to give up
Oxidation reaction will not occur during standing for paper fiber, cause to turn yellow；
1.3) second of highly concentrated hydraulic pulping step after standing step, starts high density hydraulic pulper, useless to first
Paper pulp carries out second of highly concentrated hydraulic pulping, and the temperature for controlling the first secondary stock is 55 DEG C, and pulping time 8min is obtained
Second secondary stock；
In water during pulping, the ink in waste paper fibre is activated, processing step is simplified, improves deinking rate.
1.4) mud and sewage processing step excludes weight slag from high density hydraulic pulper bottom, will by mud and water separating equipment
Sewage and sludge in weight slag are separated, and sludge are delivered to sludge drying treatment equipment drying and other treatment, by the sludge of desiccation
It send and is burned in power station, the residual fibers in full combustion sludge convert thereof into thermal energy or electric energy, sludge incineration product conduct
Crop fertilizer, by sewage transport to sewage purification treatment equipment purified treatment, the cycling use of water purified is transported to height again
Density hydraulic pulper realizes sewage zero-discharge, recycles shredded paper water, solves in the maximum production link of paper-making process water consumption
Problem of water consumption, clean and environmental protection.2) highly concentrated slug removing step send the second secondary stock to highly concentrated deslagging device and carries out highly concentrated slagging-off, system
Must remove the gred paper pulp.
3) concentration of slagging-off paper pulp is adjusted to 12% by blanching step, is sent to Bellmer, and combined bleach powder, stirring is added
Uniformly, bleached pulp is obtained, the additional amount of combined bleach powder is 0.8kg/m3First removes slurry, and combined bleach powder includes hypochlorous acid
Calcium and SODIUM PERCARBONATE, the content of calcium hypochlorite are 45%, and the specific gravity of calcium hypochlorite and SODIUM PERCARBONATE is 3:1, and mixing speed is
350rpm, mixing time 30min, and be 42 DEG C the control of the temperature of slagging-off paper pulp；To the residual impurity in slagging-off paper pulp
It is bleached, the residual impurity in slagging-off paper pulp is made papermaking filler use, production stage is simplified, increases paper performance,
Reduce manufacturing cost.
4) thickening filtration step send bleached pulp to shaking screen and carries out thickening filtration, obtains concentration paper stock, wherein sieve
Mesh number is 160 mesh, and the frequency of oscillation of shaking screen is 16KHZ；
5) centrifugal dehydration step is sent concentration paper stock to centrifugal dehumidifier and is dehydrated, obtain water content be 8% it is de-
Water paper stock, wherein the dehydration tube of centrifugal dehumidifier is provided with sieve, and sieve mesh number is 350 mesh, the dehydration of centrifugal dehumidifier
Revolving speed is 1000rpm, and the runing time of centrifugal dehumidifier is 20min；
6) adhesive mixing step send dewa-tered pulp to Pneumatic blender and carries out adhesive mixing, keeps adhesive uniform
Waste paper fibre is depended on, Pneumatic blender selects paddle mixer, and paddle mixer includes a blade and an atomization
Spray head, atomizer rotate the top for being installed on blade, and atomizer carries out coaxial reverse rotation with blade and cooperates, viscous to realize
Mixture is sufficiently combined with waste paper fibre, and adhesive mixing step includes following sub-step:
6.1) firstly, Pneumatic blender 2min is run, to break up dehydration paper stock；
6.2) then, the adhesive of the carboxymethyl cellulose (CMC) containing 0.15% is sprayed on by atomizer de-
Water paper stock, atomizer persistently spray 10 seconds, and the additional amount of adhesive is 35ml/kg dewa-tered pulp, wherein carboxymethyl cellulose
(CMC) have the function of enhancing the adhesive force of adhesive；
6.3) it finally, continuing to run Pneumatic blender 4min, to realize that dewa-tered pulp is uniformly mixed with adhesive, is pressed
Preceding paper stock；
7) dry fiber step is vibrated, paper stock before pressing is sent to oscillation drying device and carries out further drying and dehydrating, with
And the adhesive for uniformly depending on waste paper fibre is activated, wherein oscillation drying device includes vibrating conveyer chain and heat source,
Heat source is covered in oscillation conveyer chain, vibrates and is provided with several pallets and an at least rail for being used to place the preceding paper stock of pressure in conveyer chain
Road, tray motion are provided with one wave part in track, track, when tray motion is when track, the bottom of pallet and the wave of track
Portion carries out supporting cooperation, and to realize, paper stock vibrates during heating before the pressure being placed on pallet, paper stock before pressing
Water content is reduced to 7%；
8) it is pressed into paper step, paper stock before the pressure by oscillation dry fiber step is put into nipper and carries out roll-in,
Paper roll is obtained into, is wherein provided with heating roller in nipper, paper stock before pressing is carried out being pressed into paper by heating roller, heating roller
Press temperature is 200 DEG C.
The present embodiment also provides the generated wastewater treatment method in highly concentrated slug removing step:
In highly concentrated slug removing step, the waste water that highly concentrated deslagging device is discharged is filtered by scalping device, scalping dress
It installing and is equipped with sieve, sieve mesh number is 80 mesh, then filtered waste water sent to wastewater disposal basin and is staticly settled, at least through
After 5 hours staticly settle, waste water can be used for participating in pulping step.In the present invention, by the discharge of highly concentrated deslagging device
Waste water still contains deinking agent and compositional biological enzyme, but since waste water largely has the ink particle separated, is stood
Precipitating can carry out secondary use to waste water.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (9)
1. a kind of method using waste paper reconstruction corrugating medium, which comprises the steps of:
1) pulping step, including following sub-step:
1.1) waste paper, deinking agent and compositional biological enzyme are put into high density hydraulic pulper by first time highly concentrated hydraulic pulping step
Highly concentrated hydraulic pulping for the first time is carried out, compositional biological enzyme includes cellulase, hemicellulase, lipase and lipase, cellulose
Score ratio between enzyme, hemicellulase, lipase and lipase is 1~1.5:1~1.8:1~1.9:1.5~2.5, pulping temperature
Degree control is 40~65 DEG C, and pulping time is 5~10min, obtains the first secondary stock, and wherein waste paper selects high-quality old newsprint or useless
Corrugating medium, the additional amount of deinking agent are the 0.1%~1.8% of opposite waste paper dry weight, and deinking agent preferred concentration is 30~45%
Neutral deinking agent, the additional amount of compositional biological enzyme is the 0.1~0.8% of opposite waste paper dry weight；
1.2) step is stood, after the completion of highly concentrated hydraulic pulping step for the first time, stops high density hydraulic pulper, toward highly concentrated waterpower
Inert gas is added in the pulping cylinder of pulper, pulping cylinder is closed after being full of inert gas in pulping cylinder, makes the first secondary stock
The temperature for standing 20~45min in pulping cylinder, and controlling the first secondary stock is 40~65 DEG C；
1.3) second of highly concentrated hydraulic pulping step after standing step, starts high density hydraulic pulper, to the first secondary stock
The temperature for carrying out second of highly concentrated hydraulic pulping, and controlling the first secondary stock is 50~70 DEG C, and pulping time is 5~10min,
Obtain the second secondary stock；
2) highly concentrated slug removing step send the second secondary stock to highly concentrated deslagging device and carries out highly concentrated slagging-off, and slagging-off paper pulp is made；
3) concentration of slagging-off paper pulp is adjusted to 10~15% by blanching step, is sent to Bellmer, and combined bleach powder, stirring is added
Uniformly, bleached pulp is obtained, the additional amount of combined bleach powder is that 0.5~2kg,/m3 first removes slurry, and combined bleach powder includes time
Calcium chlorate and SODIUM PERCARBONATE, the content of calcium hypochlorite are 40~60%, and the specific gravity of calcium hypochlorite and SODIUM PERCARBONATE is 3:1, stirring
Speed is 250~400rpm, and mixing time is 20~45min；
4) thickening filtration step send bleached pulp to shaking screen and carries out thickening filtration, obtains concentration paper stock, wherein sieve mesh number
For 140~230 mesh, the frequency of oscillation of shaking screen is 15~20KHZ；
5) centrifugal dehydration step is sent concentration paper stock to centrifugal dehumidifier and is dehydrated, obtain water content be 5~10% it is de-
Water paper stock, wherein the dehydration tube of centrifugal dehumidifier is provided with sieve, and sieve mesh number is 250~400 mesh, centrifugal dehumidifier
Dehydrating speed is 800~1500rpm, and the runing time of centrifugal dehumidifier is 15~35min；
6) adhesive mixing step send dewa-tered pulp to Pneumatic blender and carries out adhesive mixing, depends on adhesive uniformly
In being provided with atomizer in waste paper fibre, Pneumatic blender, adhesive mixing step includes following sub-step:
6.1) firstly, 1~3min of Pneumatic blender is run, to break up dehydration paper stock；
6.2) adhesive then, is sprayed on by atomizer by dehydration paper stock, atomizer persistently sprays 5~10 seconds, bonding
The additional amount of agent is 20~40ml/kg dewa-tered pulp；
6.3) it finally, continuing to run 2~5min of Pneumatic blender, to realize that dewa-tered pulp is uniformly mixed with adhesive, is pressed
Preceding paper stock；
7) dry fiber step is vibrated, paper stock before pressing is sent to the oscillation drying device further drying and dehydrating of progress and right
The adhesive for uniformly depending on waste paper fibre is activated, wherein oscillation drying device includes oscillation conveyer chain and heat source, heat source
It is covered in oscillation conveyer chain, vibrates and is provided with several pallets and an at least track for being used to place the preceding paper stock of pressure, support in conveyer chain
Disk is moved in track, and track is provided with one wave part, and when tray motion is when track, the bottom of pallet and the one wave part of track are carried out
Cooperation is supported, paper stock vibrates during heating before the pressure being placed on pallet to realize, the water content of paper stock before pressing
It is reduced to 4~8%；
8) it is pressed into paper step, paper stock before the pressure by oscillation dry fiber step is put into nipper and carries out roll-in, is obtained
At paper roll, it wherein is provided with heating roller in nipper, paper stock before pressing is carried out being pressed into paper, the compacting of heating roller by heating roller
Temperature is 150~250 DEG C.
2. a kind of method using waste paper reconstruction corrugating medium according to claim 1, it is characterised in that: in the pulping
In step, the inert gas selects carbon dioxide or nitrogen.
3. a kind of method using waste paper reconstruction corrugating medium according to claim 2, it is characterised in that: described highly concentrated
In slug removing step, the waste water of the highly concentrated deslagging device discharge is filtered by scalping device, then filtered useless
Water send to wastewater disposal basin and is staticly settled, and at least through after 5 hours staticly settle, waste water can be only used for participating in the pulping
Step.
4. a kind of method using waste paper reconstruction corrugating medium according to claim 3, it is characterised in that: the scalping dress
It installs and is equipped with sieve, sieve mesh number is 50~100 mesh.
5. a kind of method using waste paper reconstruction corrugating medium according to claim 4, it is characterised in that: in the bleaching
In step, the temperature control the slagging-off paper pulp is 40~45 DEG C.
6. a kind of method using waste paper reconstruction corrugating medium according to claim 5, it is characterised in that: in the bonding
In agent mixing step, the Pneumatic blender selects paddle mixer, and paddle mixer includes at least one blade, described
Atomizer rotates the top for being installed on blade, and atomizer carries out coaxial reverse rotation with blade and cooperates.
7. a kind of method using waste paper reconstruction corrugating medium according to claim 6, it is characterised in that: in the bonding
In agent mixing step, the binder contains 0.1%~0.3% carboxymethyl cellulose (CMC).
8. a kind of method using waste paper reconstruction corrugating medium according to claim 7, it is characterised in that: in the oscillation
In dry fiber step, it is preferable to use daylight for the heat source, and heating lamp also can be selected or heat-generating pipe is used as heat source.
9. a kind of method using waste paper reconstruction corrugating medium according to claim 7, it is characterised in that: described first
It is provided with mud and sewage processing step after secondary highly concentrated hydraulic pulping step, weight slag is excluded from high density hydraulic pulper bottom, leads to
It crosses mud and water separating equipment to separate the sewage weighed in slag and sludge, sludge is delivered at sludge drying treatment equipment desiccation
The sludge of desiccation is sent and is burned in power station by reason, the residual fibers in full combustion sludge, at sewage transport to sewage purification
Equipment clean processing is managed, the cycling use of water purified is transported to high density hydraulic pulper again.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080035A (en) * | 2019-05-13 | 2019-08-02 | 东莞顺裕纸业有限公司 | A kind of production technology using waste paper reconstruction high-strength corrugated paper |
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