CN105568726B - A kind of double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling - Google Patents

A kind of double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling Download PDF

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CN105568726B
CN105568726B CN201610070560.3A CN201610070560A CN105568726B CN 105568726 B CN105568726 B CN 105568726B CN 201610070560 A CN201610070560 A CN 201610070560A CN 105568726 B CN105568726 B CN 105568726B
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chemical mechanical
section
decatize
waste paper
slurry
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CN105568726A (en
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曹堪洲
范刚华
徐涛
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JIANGSU JINWO MACHINERY CO Ltd
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JIANGSU JINWO MACHINERY CO Ltd
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting 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
    • 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
    • D21C5/022—Chemicals therefor
    • 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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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Paper (AREA)

Abstract

The invention discloses the double pH value chemical mechanical pulp-making methods of the wet strong waste paper recycling of one kind, this method includes material papering section, decatize workshop section, the first extrusion impregnating chemical mechanical processing section, the second extrusion impregnating chemical mechanical processing section, disappears latent and discongest section and purification screening enriching section again.The present invention is acted on while not reducing former pulp strength by mechanical forceful action and chemical treatment, realizes wet strong waste paper fibre dissociation repulping；Further can be in the two sections of extrusion impregnating connected chemical mechanical processing sections, wet strength agent first in acid condition in oxidation waste paper, then hydrolysis is further promoted in the basic conditions, more effectively destruction wet strength agent is intermolecular and chemical bond between wet strength agent and paper pulp fiber, effectively increases fiber dissociation yield and repulping yield.Solve wet strong waste paper and reclaim the problem of slurrying rate of dissociation is low, intensity declines to a great extent, and continuous, scale, low water consumption, the pollution-free environment-friendly pulping of low energy consumption can be realized.

Description

A kind of double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling
Technical field
The present invention relates to a kind of pulping system and pulping process, and in particular to a kind of waste paper recycling chemical machinery system Slurry system and pulping process.
Background technology
Waste paper is important raw material of papermaking fiber, and each state all takes much count of the recycling of waste paper resources, and world's waste paper is reclaimed Amount is brought up to 2.234 hundred million tons in 2010 by 1.826 hundred million tons in 2005；The rate of recovery brings up to 56.6%, prosperity by 49.8% Country is generally more than 60%, and South Korea, Germany are more than 80%.China's waste paper pulp-making was increased to 2010 by 28,100,000 tons in 2005 53050000 tons, account for and be always promoted to 62.7% by 54.0% with slurry amount proportion, wherein the proportion of domestic waste paper slurry is by 27.8% lifting To 38.0%.During " 12 ", secondary stock increment is about 14,000,000 tons.The domestic waste paper rate of recovery will be improved to 46.7%, Meanwhile, it is still to make full use of waste paper resources overseas, China's paper industry waste paper utilization rate is improved to 72.1%.
At present, by domestic waste paper quality is relatively low and the waste paper rate of recovery is relatively low etc., factor is influenceed, and waste paper resources supply is external Interdependency is higher, U.S. is useless, Europe is useless and day is useless can Export resource all enter China substantially, and quality is declining year by year, and price is but Improving year by year, imbalance between supply and demand increasingly sharpens.
The regeneration of waste paper can save substantial amounts of protofibre resource, the consumption for saving the energy, the dirt for mitigating environment Dye, and compared to market pulp, the repulping of waste paper has obvious cost advantage.As the improvement of people's living standards, Requirement to paper and cardboard also more and more higher, many paper kinds particularly packaging group cardboard is in order to be able to moist or with the presence of the feelings of water Still there is certain intensity under condition, wet strength agent is commonly used in production.These have the quantity of the waste paper of wet strength in year by year Increase trend.Common paper without wet strength agent, the Van der Waals force that fiber connection is formed by hydrogen bond, water can break hydrogen bond company Connect, make paper size degradation.Wet strength agent resin can form the network structure of crosslinking, insoluble in water and covalent bond with cellulose, hemicellulose. Under normal circumstances, the paper handled through wet strengthening resin will maintain more than the 30% of former dry strength after with water complete wetting, can protect Paper integrity degree is held, and the common paper without wet strength agent processing is only capable of the former dry strength of maintenance 2~7%.
Therefore, the high waste paper recycling of wet strength is highly difficult, there is high screening reject content, low yield and high power consumption during pulping It is difficult to solve etc. technical problem, this is primarily due to discongest equipment with conventional slurrying and technique can not be fully dispersed into paper by its Slurry.It is difficult the wet strong waste paper discongested often to be mingled with some in the waste paper of import, especially with high content wet strength agent forever The wet strong waste paper of solidity, discongests extremely difficult, is also difficult to the effect that has obtained even if extension beating time or increase refining strength.Very The higher waste paper of many wet strengths is landfilled as solid waste, or as waste incineration, this had both caused the pollution of environment, Waste the waste paper resources available for papermaking.
Many wet-strength papers contain high-quality bleached chemical fiber or high-quality long stuff, there is very high value, The shortage of current raw material of papermaking fiber promotes regeneration of the paper industry to wet strong waste paper to carry out big technological improvement.
Current wet strong waste paper process of repulping and technology are broadly divided into two classes：Mechanical Method and chemical method, and it is in research Stage advanced development.
【1】The wet strong waste paper process of repulping of Mechanical Method.(the processing of the useless wet-strength papers of Du Yong, Wang Zhongyuan such as Du Yong【J】It is Chinese Papermaking, 2009,28 (7)：68~69) handled using Mechanical Method in wet strong waste paper, processing procedure and be not required to steam, it is only necessary to Purely mechanical Mashing, defibrination discongest waste paper for qualified fibre stuff.Waste paper first by high-concentration pulper size degradation, pulping concentration 12~ After 15%, 25~30min of pulping time, service intermittent, every pot of blowing, the larger scraps of paper of accumulation are because that can not pass through pulper bottom Portion's sieve plate sieve aperture, is persisted in pot, gives over to next mashing；The complete one pot of slurry of high-concentration pulper every dozen, it is just defeated by conveying worm Intermediate buffering slurry tank is sent to, slurry concentration dilution is to 8~10% in tank；Slurry utilizes high potential difference in buffering slurry tank, flow to certainly double Acroll press washer is concentrated into slurry dense 25~30%；Concentration disposed slurry is delivered to highly concentrated mill fiberizer through inclined screw conveyer and ground Slurry, highly concentrated mill refining concentration 20~30%, defibrination process using two series systems, defibrination disposed slurry beating degree can reach it is former into Beating degree during slurry.This technology is disadvantageous in that (1) highly concentrated pulping production is discontinuous, and the time is longer；(2) power consumption is higher； (3) wet strength agent is not chemically treated, can cause to flocculate again in postorder pulping and papermaking processes, influences paper making；(4) wet strength agent In the presence of the using effect of the chemicals such as other resident auxiliary agents when can influence paper making.
【2】The wet strong waste paper process of repulping of alkaline process chemical steaming.King builds etc. that (king builds, Qi Liang, and galvanized iron army, China opens out .PAE Be humidified the repulping technique of strong true qualities waste paper【J】Paper and papermaking, 2008,27 (5)：47-49) handled with the method for chemical steaming True qualities waste paper, loads rotary spherical digester, liquor ratio 1 by waste paper:6, the caustic soda of addition 1% and 0.05% AQ carry out boiling, lead to again after boiling Cross hydrabrusher size degradation.Under conditions of 160 DEG C of maximum temperature of cooking, insulation 30min, unscreened yield can reach 82.7%, Repulping loss late 17.3%.(the wet strong waste paper optimization process method choices of Cao Qingfu, Zhang Yuanbin, Zhang Guilan such as Cao Qingfu【J】. Chinese paper industry, 1998 (4)：45) with self-control spool cover paper of the digester treated containing wet strength agent, in the boiling vessel of waste paper is fitted into The aluminum sulfate boiling 2h of addition 7.5%, then through hydrabrusher size degradation, waste paper per ton using hydrabrusher and was beaten more originally The Mechanical Method of pulper equipment processing, ton starches power consumption and is down to 146kw.h by original 1232kw.h, reduces by 1148 yuan of expense, obtains Preferable effect.Alkaline process chemical steaming can decompose the chemical bond of wet strength agent or destruction wet strength agent and paper pulp fiber, dissociation Wet-strength paper.There is problem：(1) waste paper pulp yield is relatively low, enters in pulp-making waste-water, adds after substantial amounts of fibrous raw material degraded The difficulty and cost of wastewater treatment；(2) if do not bleached to the secondary stock of dissociation, pulp brightness is very low, is only used for some right In the less demanding cardboard of whiteness, paper pulp purposes is restricted；(3) chemical steaming method is stronger to the chemical action of secondary stock It is strong, cause cellulosic degree of polymerization to decline, and the physical strength for causing into slurry declines.
【3】The wet strong waste paper process of repulping of oxidizer treatment.Polyamide-Polyamsne-Epichlorohydrin (PAE) resin is to make at present Leading wet strength agent is accounted in paper industry, thus, it is much wet strong useless both for PAE classes on the wet strong waste paper regenerated research utilized Paper.Oxidant can destroy the network structure that PAE produces in page or the chemical bond for directly destroying it and paper pulp fiber, Dissociate wet-strength paper.Mainly have：
(1) hypochlorite facture.In concentration is starched for 5% or so wet-strength paper, it is slowly added into NaOH solution and adjusts pH value To 11, NaCIO bleaching liquors are added, certain time is handled at the reaction temperatures.Question response terminates, and paper stock mixed liquor is transferred to Sheared in high speed dispersor a few minutes, slurry is scrubbed to carry out copy paper again.
Research shows：NaCIO consumptions discongest influence maximum to wet-strength paper, when consumption reaches 0.5~0.8g/L, discongest It is easier to, discongests rate higher；PH value on NaCIO methods influence it is more special, PAE resin in the range of wider pH value (4~10), With good stability, particularly pH value when between 6.5~8.0, its property is stablized the most, the friendship between amide epoxy compound Join key least destructible, discongest most difficult, so the stability range of resin should be avoided, select in pH ＜ 6.5 or highly basic (pH ＞ 11) discongested under conditions of；Temperature is also to influence a key factor of repulping, is handled with sodium hypochlorite or calcium hypochlorite During PAE wet-strength papers, higher treatment temperature is unfavorable for repulping；Effect and mashing and refining of the mechanical shearing processing to repulping Principle it is similar, can increase fiber profit so that be conducive to improve page intensity.
There is problem：Hypochlorite facture can effectively handle the PAE wet-strength papers of bleaching, and cost is relatively low, still It can not be by the complete repulping of non-bleached wet-strength paper, moreover, it is adsorbable organic to increase chloroform in sewage effluent, tetrachloroethanes etc. The load of halide (AOX), this is also to limit the unfavorable factor that hypochlorite is used.
(2) peroxidisulfates handle wet strong waste paper.(Wang Lijuan, Yang Runan, Zhang Haitao wait wet-strength papers to Wang Lijuan etc. The research of repulping【J】Chinese papermaking, 2004,23 (4)：63-64) using the useless RMB paper of potassium peroxydisulfate processing, conveniently Treatment conditions be potassium peroxydisulfate consumption 6%, acid treatment pH 3, time 30min, slurrying concentration 13%.It is can be controlled in into slurry rate More than 94%.(Ficher, S.A..Repulping the wet-strength paper such as Stephen.A Ficher【J】.Tappi J 1997,80(11)：141-147) the true qualities craft paper containing PAE wet strength agents is handled with sodium peroxydisulfate.When the use of sodium peroxydisulfate Measure as 1%, pre-process pH value 11, discongest under conditions of time 70min, the repulping of true qualities craft paper (PAE consumptions 0.6%) is obtained Rate reaches 66%.When the consumption of further increase sodium peroxydisulfate is to 10%, pretreatment pH value and the time it is constant in the case of, processing Another true qualities craft paper (PAE consumptions 0.4%), repulping yield can reach 74%.As a result show, persulfate is in alkalescence Under the conditions of it is poor to the treatment effect of the wet strong waste paper containing PAE.
The model compound reaction mechanism of peroxidisulfates：The tertiary amine of the easy attack PAE resin polymer of oxidant or Secondary amide key between acid amides-epoxide, makes PAE resin decompose reaction, so as to cause wet-strength paper to lose wet enhancing work( Energy.
The wet strong waste paper repulping of peroxidisulfates processing be subject to processing temperature, the reaction time, oxidizer, pH value and The influence of the factors such as mechanical shearing is larger.Temperature rise is conducive to repulping, under the conditions of neutral and alkali, the pulp strength after processing Slightly above NaCIO methods, but need slightly higher temperature, and reaction speed is slightly slow, repulping whiteness is lower slightly；Peroxidisulfates are again The content of adsorbable organic halogen is extremely low in pulping waste liquor；The not scrubbed wet strength agent for adding equivalent again of repulping, the mistake of residual Dithionate is aoxidized on the wet strength influence of the paper of copy paper again far below the influence that residual NaCIO is produced, can save and largely wash Wash water.
There is problem：In neutral or alkaline repulping process, because peroxidisulfates decompose the free radical produced The hydrogen on lignin can be extracted and form reactionless active free radical, and make most of wet strengthening resin not oxidized, so, peroxide Change dithionate less effective to unbleached kraft pulp, CTMP and OCC wet-strength papers, it is difficult to repulping.Though it is excessive Peroxidisulfates can overcome this side reaction, but expensive is inefficient, and has infringement to fiber.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of wet strong waste paper and reclaims again sharp Chemical-mechanical pulping system is used, and then a kind of wet strong waste paper recycling chemical mechanical pulp-making method is provided.
Technical scheme：In order to solve the above technical problems, the wet strong waste paper recycling chemical machinery system that the present invention is provided Slurry system, by material process traffic direction, the system includes the first conveying equipment, Material disintegrator, the second conveying equipment, rotary drum and washed Wash machine, inclined helix dehydrator, decatize storehouse, the 3rd conveying worm, the first double-screw impregnator, the first reaction warehouse, the 4th spiral It is conveyer, the second double-screw impregnator, the second reaction warehouse, the 5th conveying worm, latency chest, stock pump, defibrator, net Change screening enrichment facility, storage sizing device；
Charging aperture of the discharging opening of first conveying equipment just to Material disintegrator, the discharging opening of the Material disintegrator is just to second The charging aperture of conveying equipment, the charging aperture of the discharging opening of second conveying equipment just to tumbler-type washing machine, the rotary drum The discharging opening of rinsing maching is connected with the charging aperture of inclined helix dehydrator, the discharging opening of the inclined helix dehydrator and entering for decatize storehouse Material mouth is connected, the discharging opening in the decatize storehouse connects with the 3rd helical feed machine inlet, and the 3rd conveying worm goes out Material mouth is connected with the charging aperture of the first double-screw impregnator, the discharging opening of first double-screw impregnator and the first reaction warehouse Charging aperture is connected, and the discharging opening of first reaction warehouse is connected with the charging aperture of the 4th conveying worm, the 4th spiral transferring The discharging opening of machine is sent to be connected with the charging aperture of the second double-screw impregnator, the discharging opening and second of second double-screw impregnator The charging aperture connection of reaction warehouse, the discharging opening of second reaction warehouse connects with the charging aperture of the 5th conveying worm, and described the The discharging opening of five conveying worms is communicated to latency chest, and the stock pump is located between latency chest and defibrator, stock pump Input connected with the cavity volume of latency chest, the output end of stock pump is connected with the charging aperture of defibrator, the fiber The discharging opening of seperator is connected with the charging aperture of purification screening enrichment facility, the discharging opening of the purification screening enrichment facility and storage Sizing device is connected.
It is preferred that, the system also includes tablet pump, the discharging opening of the tumbler-type washing machine and entering for inclined helix dehydrator The mode of communicating of material mouth is：Container is provided with below the discharging opening of tumbler-type washing machine, the tablet pump is located at the container and tiltedly Between spiral dewaterer, the input of tablet pump is arranged in the cavity volume of the container, and output end and the inclined screw of tablet pump take off The charging aperture connection of water dispenser.
It is preferred that, the Material disintegrator is shredder or hydrabrusher；First conveying equipment and the second conveying equipment For chain scraper conveyor or belt conveyor；The purification screening enrichment facility includes pressurized screen, the scummer and dense being linked in sequence Contracting equipment, the discharging opening of the defibrator is connected with the charging aperture of pressurized screen, the discharging opening and scummer of the pressurized screen Charging aperture connection, the discharging opening of the scummer connect with the charging aperture of concentrator, the discharging opening of the concentrator and Sizing device is store to be connected.
It is preferred that, the tumbler-type washing machine includes body, rotary drum, rotary drum driving device；The upper lateral part of body one is set There is charging aperture, its opposite side, which is provided with discharging opening, body, is provided with washing cavities, and the rotary drum is driven in washing cavities and by rotary drum Device driving rotation；Organism bottom shape below the rotary drum position is in inversed taper platform shape；The body adjacent to charging aperture one End is provided with upper water inlet, and the lower section of the lower frustum mouthful of the inversed taper platform shape of the organism bottom is provided with the pipe connected with lower frustum mouth Body, tube wall is provided with lower water inlet；The lower section of the body is provided with sediment pipe, and the upper end of the sediment pipe is provided with upper slag dumping Valve, lower end is provided with lower blow valve.It can intake to form up current by lower water inlet using the tumbler-type washing machine of this structure, on The thrust of water-filling stream precipitates downwards effective lighter material of proportion that reduces, only cause the heavier heavy seeds such as metal object of proportion, Stone etc. sinks to sediment pipe, can effectively remove the heavy seeds in material, and it is miscellaneous in washing separation to greatly reduce material The loss easily caused during matter.
It is preferred that, the inclined helix dehydrator includes being provided with spiral case, spiral case to be driven by driving device for slow-run The spiral of the spiral of rotation, the spiral case and its inside is obliquely installed from low to high along material conveying direction, the spiral Relatively low one end of shell is the oblique lower end of shell, and higher one end is the oblique upper end of shell, and the shell is located at the oblique lower end of shell Top is provided with charging aperture, and the bottom positioned at the oblique lower end of shell is provided with discharge outlet, and the bottom positioned at the oblique upper end of shell is provided with discharging opening, Lower parallel in the spiral case positioned at spiral is provided with sieve plate.
Decatize storehouse in the system can select the conventional decatize storehouse in this area such as oscillatory type discharging decatize storehouse.It is used as the present invention's Further improve, the decatize storehouse in the system preferably rotates material toggling formula decatize storehouse, the rotation material toggling formula decatize storehouse, including storehouse Provided with chamber is steamed in body, rotation poking device, discharge device, warehouse, warehouse top is provided with charging aperture；The rotation poking device bag The material stirring disc for being located at warehouse bottom is included, the material stirring disc includes chassis and the material toggling piece that can be rotated on chassis；The discharge dress Put including housing and discharge motor, housing is interior to be provided with load displacing screw, and the load displacing screw includes helical axis and is arranged on helical axis On helical blade, the helical axis and be located at housing side discharge motor be connected, another side lower part of housing provided with discharging Mouthful；Discharge device is located at below material stirring disc, and the position that the chassis of material stirring disc is docked with the housing of discharge device is provided with blanking opening. As a further improvement on the present invention, in this rotation material toggling formula decatize storehouse, rotation poking device also includes material toggling motor and center Axle, the center chassis is provided with through hole, and the central shaft is fixedly connected through the through hole one end with material toggling piece, and the other end passes through connection Axle device is connected with material toggling motor；The chassis is circular base plate, and the blanking opening is located on the eccentric position on chassis, and It is to constitute four by the two sections of circular arcs and two strings with circular base plate concentric in the chassis region of material toggling piece revolving coverage method The blanking opening on side；It is described to steam the circumferential uniform tread plate in top that cavity wall is located at material stirring disc；The warehouse is cylinder or circle Platform shape；The warehouse bottom is provided with steam inlet tube, and the warehouse top is provided with opposing steam flow mouthful and steam outlet；The discharge The position of neighbouring discharging opening is provided with steam outlet on the housing of device；Also include muffler, one end mouth of pipe of the muffler Docked with the steam outlet of the discharge device, the other end is docked with the opposing steam flow mouthful on the warehouse top；The discharge Motor is adjustable speed toothed gearing electric motor, and the helical axis of the load displacing screw is by bearing and bearing seat supports, and two ends are provided with sealing Contain, the helical blade is the variable-pitch auger blade gradually changed from small to big along helical axis conveying direction pitch.When thing in warehouse Material reaches certain material position and met after sufficient stop steaming time that this rotation material toggling formula decatize storehouse is by rotating poking device, even It is continuous that pulping raw material is layered and discharge device is dialled in by blanking opening by first in first out, then sent by discharge device metering Go out.On the one hand it can eliminate because material is heated, compacting and volumetric expansion cause the arch formation that occurs in storehouse, improve capacity and utilize Rate；Another aspect material obtains the decatize softening of abundance, can effectively lift the chemical pre-stain effect of extruding and the water in post-order process The removal efficiency of dissolubility coloring matter and resinous substances, reduces chemical cost, so as to improve the white of bleached chemi-mechanical pulp slurry Degree and physical property；When material short interruption, moreover it is possible to be used as a buffer container, it is ensured that provide a system to uniform, controllable Material.While ensureing material decatizing effect, normal quantity-produced stability is maintained well.Further, above-mentioned steaming Vapour loop is designed, and can make full use of steam efficiency, while material decatize bating effect is further improved, energy-conserving and environment-protective.More Further, material is in plug vertical drop in warehouse, and this rotation material toggling formula decatize storehouse effectively prevent material by tread plate The problem of being rotated with poking device skidding.Further, the helical blade on load displacing screw helical axis is designed using varying pitch, and one Aspect ensure that material is in full state in helical axis screw channel below blanking opening, on the other hand causes material in course of conveying It is middle that loose condition (of surface) is gradually transitions by full state along helical axis conveying direction, improve efficiency, reduce spiral operating load and Abrasion, while realizing continuous metering discharging, improves the stability of system.
First reaction warehouse and the second reaction warehouse therein can select this area popular response storehouse, be used as the further of the present invention Improve, perfectly even blanking type reaction warehouse.The uniform blanking type reaction warehouse, including warehouse and uniform doffer, warehouse top Portion is provided with charging aperture, and warehouse bottom is provided with blanking port；Load displacing screw is provided with the uniform doffer, including housing, housing, The side lower part of housing one is provided with the discharging opening of reaction warehouse, and the charging aperture of the uniform doffer is the blanking of reaction warehouse warehouse bottom Mouthful；The load displacing screw includes helical axis and the helical blade being arranged on helical axis, and the helical axis is located above discharging opening Position be fixed with uniform blanking ring, the uniform blanking ring is consistent with the central axis of the helical axis；It is described uniformly to fall Expect that ring includes body and multi start thread blade, the multi start thread blade is fixedly connected on the outer wall of body, the body is consolidated Fixed surround is socketed on helical axis, rotation direction and the helical blade rotation direction one on the load displacing screw of the multi start thread blade Cause.As a further improvement on the present invention, the warehouse of this uniform blanking type reaction warehouse is trapezoidal side storehouse；The uniform doffer Including more than two load displacing screws, every load displacing screw includes helical axis and helical blade, and the helical blade is along defeated Send the variable-pitch auger blade that direction pitch is gradually changed from small to big；The helical axis of every load displacing screw is located at the portion above discharging opening Position is fixed with uniform blanking ring, and the corresponding helical axis central axis of each uniform blanking ring is consistent, each uniformly falls Expect that the helical blade rotation direction on the corresponding load displacing screw of multi start thread blade on ring is consistent；The discharge of described more than two Spiral is independently driven, and the helical axis of adjacent load displacing screw is reversely rotated.This uniform blanking type reaction warehouse passes through uniform blanking Ring can realize uniform blanking, be conducive to downstream pulping equipment steady production, fluctuation of load amplitude is by more than one times original reduction To within 10~15%, equipment failure rate is reduced, equipment dependability is improved, stock quality is stabilized.On this basis, enter One step can be reversely rotated by more than two load displacing screws so that two reverse rotations of the material on neighbouring load displacing screw are outstanding It is, under the common promotion of the helical blade of rotation, more to elapse forward in a balanced way, then stirring through uniform blanking ring in anti- Mix and break up, continuous uniform obtains and drops down onto upstream device under discharging opening.The varying pitch design of helical blade can make on load displacing screw Obtain material and loose condition (of surface) is gradually transitions by full state along helical axis conveying direction in course of conveying, improve efficiency, reduction Spiral operating load and abrasion.
It is preferred that, first, second double-screw impregnator in the system, the application number such as submitted for 11st in September in 2012 For the Chinese patent application of the 201210332112.8, A of Publication No. CN 102864669 entitled " a kind of double-screw impregnator " Described in, entire contents are incorporated herein by reference.The grant number that can also be submitted for 11st such as Septembers in 2012 is ZL Described in the Chinese patent application of 201220458032.2 entitled " a kind of double-screw impregnator ", entire contents pass through Reference is hereby incorporated by.Above-mentioned double-screw impregnator includes frame and the motor being arranged in frame, speed-changing gear box, removable Formula crown gear coupling, machine barrel and two screw rods, the motor by speed-changing gear box and movable crown gear coupling with Two screw drive connections, two screw rods are parallel to each other and are rotatably arranged in the machine barrel, described machine barrel one end Provided with charging aperture, the other end is provided with discharging opening；The screw rod be arranged with successively along conveying direction the first conveyor screw set, first squeeze Screw-casing, the second conveyor screw set, the second extrusion spiral set, the 3rd conveyor screw set and the 3rd extrusion spiral set are pressed, it is described The hand of spiral phase that the hand of spiral of first, second, third conveyor screw set covers with first, second, third extrusion spiral Instead, the pitch of the first conveyor screw set is gradually reduced along conveying direction；The machine barrel top is provided with and the 3rd conveyor screw Cover corresponding liquid and add hole, the machine barrel bottom is provided with waste liquid hole；The spiral shell rib of the first, second, third extrusion spiral set On be provided with slot；The machine barrel is dissection type machine barrel, including the upper half machine barrel being fixedly installed in frame symmetrically connected up and down With the lower half machine barrel being connected in frame able to turn on or off.
First reaction warehouse and the second reaction warehouse therein can also be identical with above-mentioned decatize chamber structure composition, because through double spiral shells The material of bar impregnator extruding and kneading, its frictional heat temperature has been met needed for reaction warehouse reaction, so when reaction warehouse is used and vapour When steaming the same structure in storehouse, steam can not be injected by steam pipe and heated, certainly in case of need, can also be from steaming The mode of vapour heating.
In order to solve the above technical problems, a kind of strong waste paper recycling chemical mechanical pulp-making method that the present invention is provided, It uses the percentage amounts of each dosage component in above-mentioned wet strong waste paper recycling chemical-mechanical pulping system, this method to be to account for The percentage amounts of over dry raw material weight, the wet strong waste paper recycling chemical mechanical pulp-making method includes：
1. material papering section：
Feedstock transportation to Material disintegrator is cracked into after tablet, be delivered to tumbler-type washing machine add water adjustment concentration be 3~5% Washed, sediment removes the impurity being mingled in material, the material and water after washing are pumped to inclined screw dehydration by tablet pump Machine further removes residual impurity and completes dehydration；Residual impurity and water are discharged by the screen cloth mesh of inclined helix dehydrator；
2. decatize workshop section：
Material after the dehydration that material papering section is exported is delivered to decatize storehouse, in 0.3~0.6MPa steam pressure scope Interior decatize causes the softening of material decatize for 15~30 minutes；
3. the first extrusion impregnating chemical mechanical processing section：
Material is delivered in this section of double-screw impregnator by conveying worm and is squeezed kneadding after the steaming that decatize workshop section is exported Rub with the hands as clusters shape and be concentrated into 35~45% concentration, soaked in this section of double-screw impregnator with the first metered chemistry thereafter The highly concentrated mixing of stain medicament, and the adjustment slurry that adds water is dense to 25~35%, and reaction warehouse is expelled to after realizing the chemical impregnation processing that homogenizes, Within the temperature range of 80~95 DEG C, stop is reacted for 35~60 minutes；
4. the second extrusion impregnating chemical mechanical processing section：
By the slurry of the first extrusion impregnating chemical mechanical processing section reaction warehouse output, this Duan Shuan is delivered to by conveying worm It is pressed further by rubbing in screw rod impregnator for fibre bundle and single fiber mixture shape and is concentrated into 35~45% concentration, its Afterwards in this section of double-screw impregnator with the second metered chemical impregnation medicament is highly concentrated mixes, and the adjustment slurry that adds water is dense to 25 ~35%, realization homogenizes after chemical impregnation is handled and is expelled to reaction warehouse, within the temperature range of 80~95 DEG C, stops 35~60 Minute is reacted；
5. disappear latent and discongest section again：
By the slurry of the second extrusion impregnating chemical mechanical processing section reaction warehouse output, the latent slurry that disappears is delivered to by conveying worm Cause ball agglomerated fibres disperse to stretch to eliminate internal stress in pond, the adjustment slurry that adds water is dense to 3~5%, adjust slurry temperature range and be 60~70 DEG C, it is pumped to defibrator thereafter by stock pump and is discongested again, isolates light, heavy seeds and thick waste material and wet Strong paper fiber；
6. purify, screen and enriching section：
It will disappear latent and discongest the isolated wet-strength paper fiber of section again, purified through scummer, pressurized screen is screened, concentrator Standby in storage sizing device copy is stored in after concentration.
It is preferred that, the sediment impurity obtained in the 1. material papering section after tumbler-type washing machine washing enters fixed-end forces system System, the residual impurity and water discharged by the sieve plate mesh of inclined helix dehydrator enters water treatment system, after precipitation purification It is recycled to be used in washing process.
It is preferred that, according to the percentage by weight for accounting for over dry raw material, in the 2. decatize workshop section, the material after dehydration is delivered to The humectant again of addition 0.1%~0.15% during the decatize of decatize storehouse, the humectant again includes linear or direct-connected ethoxylate or third The alcohol of epoxide compound, and defoamer such as siloxy group latex；3. first in the first extrusion impregnating chemical mechanical processing section Chemical impregnation medicament is 1~2% NaOH or Na2CO3, controlled by the slurry pH value of alkali process in the range of 11.5~12.5； 4. the second chemical impregnation medicament in the second extrusion impregnating chemical mechanical processing section is oxidant, passes through oxidizer treatment Slurry pH value is controlled in the range of 11.5~12.5；The oxidant includes 1~3% NaOH, 2~6% H2O2, 1~2% Na2SiO3With 0.2~0.5% chelating agent；The chelating agent is any one of DTPA or EDTA.As further excellent In choosing, the 2. decatize workshop section, the material after dehydration adds 0.1% humectant again when being delivered to decatize storehouse decatize；Described 3. The NaOH that the first chemical impregnation medicament is 1% in one extrusion impregnating chemical mechanical processing section；4. the second extrusion impregnating chemistry The second chemical impregnation medicament in mechanical treatment section includes 1% NaOH, 2% H2O2, 1% Na2SiO3With 0.2% DTPA。
As another preferred scheme, according to the percentage by weight for accounting for over dry raw material, in the 2. decatize workshop section, after dehydration Material add when being delivered to decatize storehouse decatize 0.1%~0.15% humectant again；3. the first extrusion impregnating chemical machinery The H that the first chemical impregnation medicament in processing section is 1~1.5%2SO4Or 3~6% alum, pass through the slurry pH value of acid treatment Control is in the range of 4.5~6；4. the second chemical impregnation medicament in the second extrusion impregnating chemical mechanical processing section is oxidation Agent, is controlled in the range of 11.5~12.5 by the slurry pH value of oxidizer treatment；The oxidant comprising 1~3% NaOH, 2~6% H2O2, 1~2% Na2SiO3With 0.2~0.5% chelating agent；The chelating agent is any for DTPA's or EDTA It is a kind of.As another preferred scheme still more preferably, in the 2. decatize workshop section, the material after dehydration is delivered to decatize The humectant again of addition 0.12% during the decatize of storehouse；3. the first chemical impregnation medicine in the first extrusion impregnating chemical mechanical processing section Agent is 1.2% H2SO4；4. the second chemical impregnation medicament in the second extrusion impregnating chemical mechanical processing section includes 2% NaOH, 4% H2O2, 1.5% Na2SiO3With 0.35% DTPA.As another preferred scheme it is another further It is preferred that, in the 2. decatize workshop section, the material after dehydration adds 0.15% humectant again when being delivered to decatize storehouse decatize；It is described 3. The H that the first chemical impregnation medicament in first extrusion impregnating chemical mechanical processing section is 1.5%2SO4；4. the second extruding leaching The second chemical impregnation medicament in stain chemical mechanical processing section includes 3% NaOH, 6% H2O2, 2% Na2SiO3With 0.5% EDTA.
Beneficial effect：In chemical-mechanical pulping system and pulping process that the present invention is provided, mechanical shear is leaned on using Material disintegrator Waste paper is cut into the scraps of paper, then by the use of double-screw impregnator as fibre machinery dissociation and Chemical Pretreatment equipment, by double spiral shells The mechanical kneading action of bar impregnator screw rod, progressively diminishes in wet strong waste paper piece appearance and size and substep gradually dissociates the same of fiber When, it is chemically treated, realizes the highly concentrated dipping that mixes and homogenize of chemical assistant and slurry, improves chemical reaction efficiency, drop Low chemical cost 20~30%.
Further, the chemical-mechanical pulping system that the present invention is provided, can pass through lower water inlet using tumbler-type washing machine Mouth water inlet forms up current, effectively reduces the lighter material of proportion and precipitates downwards, only causes the heavier heavy seeds of proportion such as gold Category thing, stone etc. sink to sediment pipe, can effectively remove the heavy seeds in material, and greatly reduce material in washing point The loss easily caused during from impurity.
Further, the chemical-mechanical pulping system that the present invention is provided, can use uniform blanking type reaction warehouse to pass through Uniform blanking ring realizes uniform blanking, is conducive to downstream pulping equipment steady production, fluctuation of load amplitude by original one times with On be reduced within 10~15%, reduce equipment failure rate, improve equipment dependability, stabilize stock quality；
Further, the chemical-mechanical pulping system that the present invention is provided, can use rotation material toggling formula decatize storehouse to pass through Rotation poking device material continuous stratification is dialled in into discharge device, by tread plate prevent material skid rotation, eliminate because Arch formation caused by the heated volumetric expansion of material, improves capacity utilization rate, and material has obtained sufficient decatize softening, effectively carried The chemical extrusion impregnating effect of postorder and water-soluble coloured and resinous substances removal efficiency have been risen, chemical cost is reduced.
Further, can be in the two sections of extrusion impregnating connected chemistry in the chemical mechanical pulp-making method that the present invention is provided Mechanical treatment section, is first 4.5~6 through peracid treatment control ph scope to wet strong waste paper, then pass through oxidant to wet strong waste paper It is 11.5~12.5 to handle control ph scope, avoids the most stable of pH value range of wet strength agent property in wet strong waste paper, and pass through The method of double pH value processing, wet strength agent first in acid condition in oxidation waste paper, then further promotees in the basic conditions Enter hydrolysis, more effectively destruction wet strength agent is intermolecular and chemical bond between wet strength agent and paper pulp fiber, obtains wet-strength paper The high dissociation yield of fiber 96% or even more than 98% will be completely dissociated, and effectively increase fiber dissociation yield and repulping yield.
Generally speaking, the chemical-mechanical pulping system and pulping process that the present invention is provided are by mechanical forceful action and chemistry Processing is acted under low (electricity) energy consumption, while former pulp strength is not reduced or even is increased, realizes wet strong waste paper fibre solution From repulping；Using environment-friendly type oxidant in 25~35% times repulpings of slurry concentration, reduction ton pulp-water consumption, using water wisely is real Existing pollution-free environment-friendly pulping；And different wet strong waste paper characteristics can be directed to, using different oxidants, different process conditions, More effectively destruction wet strength agent is intermolecular and chemical bond between wet strength agent and paper pulp fiber, realize containing bleach chemical pulp, The repulping of all kinds of wet-strength papers of chemi-mechanical pulp or brown stock is recycled.Entirety solves wet strong waste paper and reclaims pulping fibre The problem of rate of dissociation is low, pulp strength declines to a great extent, and continuous, scale, low water consumption, the pollution-free environmental protection of low energy consumption can be realized Slurrying.
Brief description of the drawings
Fig. 1 is the overall structure diagram of wet strong waste paper recycling chemical-mechanical pulping system；
Fig. 2 is the structural representation of tumbler-type washing machine；
Fig. 3 is Fig. 2 left view；
Fig. 4 is the structural representation of inclined helix dehydrator；
Fig. 5 is the structural representation for rotating material toggling formula decatize storehouse；
Fig. 6 is Fig. 5 top view；
Fig. 7 is Fig. 5 left view；
Fig. 8 is the structural representation of uniform blanking type reaction warehouse；
Fig. 9 is the structural representation of uniform blanking ring in uniform blanking type reaction warehouse；
Figure 10 is the structural representation that uniform doffer in uniform blanking type reaction warehouse configures two load displacing screws.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of system and the embodiment of method are further described to the present invention.
As shown in figure 1, this wet strong waste paper recycling chemical-mechanical pulping system, by material process traffic direction, bag Include the first conveying equipment 1, Material disintegrator 2, the second conveying equipment 3, tumbler-type washing machine 4, tablet pump 5, inclined helix dehydrator 6, vapour Steam storehouse 7, the 3rd conveying worm 8, the first double-screw impregnator 9, the first reaction warehouse 10, the 4th conveying worm 11, second pair It is screw rod impregnator 12, the second reaction warehouse 13, the 5th conveying worm 14, latency chest 15, stock pump 16, defibrator 17, net Change screening enrichment facility 18, storage sizing device 19；
Charging aperture of the discharging opening of first conveying equipment 1 just to Material disintegrator 2, the discharging opening of the Material disintegrator 2 is just right The charging aperture of second conveying equipment 3, the charging aperture of the discharging opening of second conveying equipment 3 just to tumbler-type washing machine 4 is described Container (not shown) is provided with below the discharging opening of tumbler-type washing machine 4, the tablet pump 5 takes off located at the container with inclined screw Between water dispenser 6, the input of tablet pump 5 is arranged in the cavity volume of the container, the output end and inclined helix dehydrator of tablet pump 5 6 charging aperture connection, the discharging opening of the inclined helix dehydrator 6 connects with the charging aperture in decatize storehouse 7, and the decatize storehouse 7 goes out Material mouth is connected with the charging aperture of the 3rd conveying worm 8, the discharging opening and the first double-screw impregnator of the 3rd conveying worm 8 9 charging aperture connection, the discharging opening of first double-screw impregnator 9 connects with the charging aperture of the first reaction warehouse 10, and described the The discharging opening of one reaction warehouse 10 is connected with the charging aperture of the 4th conveying worm 11, the discharging opening of the 4th conveying worm 11 Connected with the charging aperture of the second double-screw impregnator 12, the discharging opening of second double-screw impregnator 12 and the second reaction warehouse 13 Charging aperture connection, the discharging opening of second reaction warehouse 13 connects with the charging aperture of the 5th conveying worm 14, the described 5th The discharging opening of conveying worm 14 is communicated to latency chest 15, the stock pump 16 located at latency chest 15 and defibrator 17 it Between, the input of stock pump 16 is connected with the cavity volume of latency chest 15, the output end of stock pump 16 and the charging of defibrator 17 Mouth connection, the discharging opening of the defibrator 17 is connected with the charging aperture of purification screening enrichment facility 18, and the purification is screened The discharging opening of enrichment facility 18 is connected with storage sizing device 19.Storage slurry is standby in the storage sizing device 19 copies.Specifically, the purifier sieve Enrichment facility 18 is selected to may include the pressurized screen 20, scummer 21 and concentrator 22 being linked in sequence, the defibrator 17 Discharging opening is connected with the charging aperture of pressurized screen 20, and the discharging opening of the pressurized screen 20 is connected with the charging aperture of scummer 21, described The discharging opening of scummer 21 is connected with the charging aperture of concentrator 22, discharging opening and the storage phase of sizing device 19 of the concentrator 22 Even.
Material disintegrator 2 therein is shredder or hydrabrusher, and the first conveying equipment 1 and the second conveying equipment 3 are carrier bar Conveyer or belt conveyor.The crushing mechanism structure of the shredder is relatively reverse by the stationary knife being fixed on casing and two The rotor composition of rotation, material enters after shredder, by group between some cutterheads and cutterhead and stationary knife between two rotors Into shearing pair, material cutting is broken into the tablet of certain size, rotor by the middle axle for spline or hexagon section and Cutterhead in tandem on axle is constituted, and the size of material after shearing can be adjusted by adjusting cutterhead thickness；Shredder can root According to need configure hilted broadsword roll structure, it would however also be possible to employ double knife roller or many knife roller structures.
Tumbler-type washing machine 4 therein can select this area conventional rotary drum formula rinsing maching, and one kind is provided herein and is implemented Form, as shown in Figures 2 and 3, the tumbler-type washing machine include body, rotary drum 402, rotary drum driving device 404；The body one Upper lateral part is provided with charging aperture 401, and its opposite side, which is provided with discharging opening 403, body, is provided with washing cavities, and the rotary drum 402 is located at and washed Wash intracavitary and driven by rotary drum driving device 404 and rotated；Organism bottom shape below the position of rotary drum 402 is in inversed taper platform Shape；The body is provided with upper water inlet 406, the lower frustum of the inversed taper platform shape of the organism bottom adjacent to one end of charging aperture 401 The lower section of mouth is provided with the body connected with lower frustum mouth, and tube wall is provided with lower water inlet 407；The lower section of the body is provided with heavy Slag pipe 405, the upper end of the sediment pipe 405 is provided with upper blow valve 408, and lower end is provided with lower blow valve 409.During work, through particle Machine cracks into the material of tablet into the charging aperture 401 of tumbler-type washing machine, and washings are by upper water inlet 406 and lower water inlet 407 are added, and rotary drum 402 is driven and continuous slow rotation by rotary drum driving device 404, and tablet enters after scrubbing section, passes through rotary drum 402 rotation will continuously wash rear tablet and be transferred to by discharging opening 403, and heavy seeds such as metal object, stone etc. sink to sediment pipe 405； Upper during normal work blow valve 408 is opened, lower blow valve 409 is closed, so that slag charge is precipitated into sediment pipe 405, when needing row During slag, upper blow valve 408 is closed, lower blow valve 409 is opened, and discharges sediment, and then upper blow valve 408 is again turned on, lower slag dumping Valve 409 is again switched off, and upper and lower blow valve is alternately closed and opening realizes sediment, enters fixed-end forces system after sediment discharge. In the structure, because the water inlet of lower water inlet 407 can form up current, it is lighter that the thrust of up current can effectively reduce proportion Material precipitate downwards, but the heavier heavy seeds of proportion such as metal object, stone etc. can still sink to sediment pipe, can be effectively clear Except the heavy seeds in material, and greatly reduce the loss that material is easily caused during washing separation impurity.
Inclined helix dehydrator 6 therein can select the conventional inclined helix dehydrator in this area, and one kind is provided herein and is implemented Form, as shown in figure 4, the inclined helix dehydrator includes being provided with by driving device for slow-run in spiral case 602, spiral case 602 The spiral 603 of the spiral 603 of 604 driving rotations, the spiral case 602 and its inside inclines from low to high along material conveying direction Tiltedly set, the two ends of the spiral case 602 are respectively the oblique lower end of shell and the oblique upper end of shell, and the shell is under shell is oblique The top at end is provided with charging aperture 601, and the bottom positioned at the oblique lower end of shell is provided with discharge outlet 607, the bottom positioned at the oblique upper end of shell Provided with discharging opening 605, the lower parallel in the spiral case 602 positioned at spiral 603 is provided with sieve plate 606.During work, through turning Material and water after drum washing machine washing are pumped to the charging aperture 601 of inclined helix dehydrator by tablet pump, and spiral 603 is by driving The driving rotation of device 604, material is delivered to discharging opening 605 by the lifting of spiral 603 and discharged.Washings and residual impurity pass through filter screen The mesh of plate 606 is discharged and is discharged into water treatment system through discharge outlet 607, and washing process is back to through precipitation purification Posterior circle.
Decatize storehouse 7 therein can select the conventional decatize storehouse in this area such as oscillatory type discharging decatize storehouse, preferably rotate material toggling formula Decatize storehouse.As shown in Fig. 5, Fig. 6, Fig. 7, the rotation material toggling formula decatize storehouse includes warehouse 702, rotation poking device, discharge dress Put, provided with chamber is steamed in warehouse 702, the top of warehouse 702 is provided with charging aperture 701；The rotation poking device include material toggling motor 712, Central shaft 713 and the material stirring disc for being located at warehouse bottom, the material stirring disc include chassis 714 and the material toggling piece that can be rotated on chassis 715；The center of chassis 714 is provided with through hole；Central shaft 713 is fixedly connected through the through hole one end with material toggling piece 715, and the other end passes through Shaft coupling is connected with material toggling motor 712；The discharge device includes housing 703 and discharge motor 704, the discharge motor 704 For adjustable speed toothed gearing electric motor, housing 703 is interior to be provided with load displacing screw, and load displacing screw includes helical axis 705 and is arranged on spiral Helical blade 706 on axle；The helical axis 705 of the load displacing screw is by being located at the first bearing seat 707 and second bearing of both sides Seat 708 and bearings, two ends are respectively equipped with the sealing of the first sealing culvert 709 and second and contain 710, and the helical axis 705 is with being located at The discharge motor 704 of housing side is connected, and another side lower part of housing 703 is provided with discharging opening 711, and the helical axis is provided with Helical blade 706 be the variable-pitch auger blade that gradually changes from small to big along conveying direction pitch；The discharge device is located at material toggling Below disk, the position that the chassis 714 of material stirring disc is docked with the housing 703 of discharge device is provided with blanking opening 716, the blanking opening 716 are located on the eccentric position on chassis 714, and in the region on the chassis 714 of the revolving coverage method of material toggling piece 715；Above-mentioned material toggling The chassis 714 of disk is circular base plate, and the housing 703 of discharge device is cylindrical shape, the side of the blanking opening 716 for circular base plate with The butted line of discharge device housing, the i.e. blanking to be made up of four edges the two sections of circular arcs and two strings with circular base plate concentric Opening；It is described to steam the circumferential uniform some vertical bar shape tread plates 726 in top that cavity wall is located at material stirring disc；Warehouse 702 is truncated cone-shaped, It can certainly be cylinder；Observation panel 718 is provided with the middle part of warehouse；In circumferentially uniform 4 steam inlet tubes in the bottom of warehouse 702, Respectively the first steam inlet tube 719, the second steam inlet tube 720, the 3rd steam inlet tube 721, the 4th steam inlet tube 722；The storehouse The top of body 702 is provided with opposing steam flow mouthful and steam outlet 723；The portion of neighbouring discharging opening 711 on the discharge device housing 703 Position is provided with steam outlet 724；This decatize storehouse also includes muffler 725, one end mouth of pipe and the discharge of the muffler 725 The steam outlet 724 of device is docked, and the other end is docked with the opposing steam flow mouthful on the top of warehouse 702., will be through oblique during work Material after the dehydration of spiral dewaterer falls into warehouse 702 from charging aperture 701 and steams intracavitary.Steam is entered respectively by external steam pipeline Enter steam inlet tube, and then enter bottom of chamber portion of steaming, part evaporation decatize softening material upwards, excess steam is from steam outlet 723 outputs；Another part enters discharge device through blanking opening 716 downwards, and then the steam outlet 724 from discharge device is defeated Go out, being back to warehouse by opposing steam flow mouth of the muffler 725 through the warehouse top steams intracavitary, by the natural angle of rest (repose) shadow of material Ring, it is in that, without material state, steam can be made smoothly to be back to steaming intracavitary decatize softening material, excess steam is through steam that warehouse, which steams chamber top, Floss hole 723 is recycled or discharged；When in decatize storehouse warehouse 702 material reach certain material position and meet it is sufficient stop decatize when Between after, start the material toggling motor 712 of rotation poking device and the discharge motor 704 of discharge device, material toggling motor 712 passes through center The driving of axle 713 material toggling piece 715 rotates, and the driving helical axis 705 of discharge motor 704 rotates；Because load displacing screw uses adjustable speed gear Reducing motor drives, and can reach metering conveying purpose by pre-setting load displacing screw rotating speed herein；The rotary course of material toggling piece 715 In, continuously by material layering and discharge device is dialled in by first in first out by blanking opening 716, material is in warehouse 702 It is in plug vertical drop to steam intracavitary, and tread plate 726 effectively prevents material from skidding with poking device to rotate；It is now placed in blanking opening 716 lower section helical axis 705 screw channel in material be in full state, in course of conveying material along helical axis conveying direction by filling Full state is gradually transitions loose condition (of surface), and the final load displacing screw by discharge device is measured and sent out, into upstream device.
Double-screw impregnator therein, the Application No. 201210332112.8 such as submitted for 11st in September in 2012, openly Number for the A of CN 102864669 entitled " a kind of double-screw impregnator " Chinese patent application described in, entire contents It is incorporated herein by reference comprising accompanying drawing.The grant number that can also be submitted for 11st such as Septembers in 2012 is ZL201220458032.2 Entitled " a kind of double-screw impregnator " Chinese patent application described in, entire contents comprising accompanying drawing pass through quote knot Together in this.The double-screw impregnator includes frame and the motor being arranged in frame, speed-changing gear box, movable barreled tooth flank connection Axle device, machine barrel and two screw rods, the motor are passed by speed-changing gear box and movable crown gear coupling and two screw rods Dynamic connection, two screw rods are parallel to each other and are rotatably arranged in the machine barrel, and described machine barrel one end is provided with charging aperture, The other end is provided with discharging opening；The screw rod is arranged with the first conveyor screw set, the first extrusion spiral set, along conveying direction successively Two conveyor screw sets, the second extrusion spiral set, the 3rd conveyor screw set and the 3rd extrusion spiral set, described first, second, the The hand of spiral that the hand of spiral of three conveyor screws set covers with first, second, third extrusion spiral is on the contrary, described first is defeated The pitch of square auger set is gradually reduced along conveying direction；It is designed with being homogenized ring between each conveyor screw set and extrusion spiral set； The machine barrel top adds hole provided with liquid corresponding with the 3rd conveyor screw set, and the machine barrel bottom is provided with and first, second Provided with filtering castor, i.e. draining filter screen at the corresponding waste liquid hole of output end of conveyor screw set, waste liquid hole；Described first, second, Slot is provided with the spiral shell rib of three extrusion spirals set；The machine barrel is dissection type machine barrel, including being fixedly installed of symmetrically connecting up and down Upper half machine barrel and the lower half machine barrel being connected in frame able to turn on or off in frame.During work, material by two screw rods to Discharging opening direction is promoted, and because the pitch that the first conveyor screw covers is gradually reduced in course of conveying, material is gradually compressed and filled Full screw channel；Before into reverse crush zone extrusion spiral set at i.e. the first homogenizing ring, extruding force reaches maximum, and material is pressed strongly Contracting；In the presence of forward extrusion power, material is forced through the slot on the first extrusion spiral set spiral shell rib, is squeezed, crumples Material physical dimension diminish and by conquassation, equally from the second conveyor screw set and the second extrusion spiral set extruding homogenizing again Afterwards, material, which has passed sequentially through two sections of extruding and kneading sections and rubbed, is dissociated into clusters shape, bundle fiber shape and single fiber shape；Together When, material contained humidity and the hydrotrope are extruded and are discharged and collected into water process system by machine barrel filter castor and filtrate drain drilling System；Before the positive discharging end materials that the second extrusion spiral covers enter mixing section, it is medicine feeding hole to add hole by machine barrel liquid By the metered chemical impregnation medicament of metering chemical feeding device and dilution water, realize that medicament is mixed with the highly concentrated of fiber, adjustment slurry is dense Discharged to 25~35%, then after the highly concentrated mixing of the 3rd extrusion spiral set.
The reaction warehouse 13 of first reaction warehouse 10 and second therein can select this area popular response storehouse, perfectly even blanking type Reaction warehouse.As shown in figure 8, the uniform blanking type reaction warehouse includes warehouse 1010 and uniform doffer, warehouse 1010 is ladder The charging aperture 1020 of reaction warehouse is provided with the top of shape side storehouse, warehouse, the bottom of warehouse 1010 is provided with blanking port；The uniform doffer bag Include and load displacing screw is provided with housing, housing, the load displacing screw includes helical axis 1040 and the helical-blade being arranged on helical axis Piece 1050；The helical axis 1040 of the load displacing screw and the motor drive connection for being located at housing side, another side lower part of housing are provided with The discharging opening 1030 of reaction warehouse, the charging aperture of this uniform doffer is the blanking port of the bottom of warehouse 1010；The helical axis 1040 positions for being located at the top of discharging opening 1030 are fixed with uniform blanking ring 1060；The structural representation of uniform blanking ring 1060 As shown in figure 9, including body 1061, the outer wall of body 1061 is fixedly connected with multi start thread blade 1062；The uniform blanking The body 1061 of ring is fastenedly connected on the helical axis 1040 by welding or bolt, uniform blanking ring 1060 and helical axis 1040 central axis is consistent；The rotation direction of the multi start thread blade 1062 is revolved with the helical blade 1050 on the load displacing screw To consistent.The load displacing screw independently driven as two can also be included in the uniform doffer of certain reaction warehouse, such as Shown in Figure 10, every load displacing screw include helical axis and helical blade, the helical blade be along conveying direction pitch gradually The variable-pitch auger blade changed from small to big；The position that the helical axis of every load displacing screw is located above discharging opening is fixed with Even blanking ring, the corresponding helical axis central axis of each uniform blanking ring is consistent, the multi-thread spiral shell on each uniform blanking ring Helical blade rotation direction on the corresponding load displacing screw of line blade is consistent；The helical axis of this two load displacing screws is reversely rotated. In this configuration, material reversely rotates being total to for the especially anti-interior helical blade to rotation in two on load displacing screw Under promoting, more elapse forward in a balanced way, the stirring then through uniform blanking ring is broken up, continuous uniform is obtained to fall from discharging opening To upstream device；The varying pitch of helical blade can be designed so that material is conveyed in course of conveying along helical axis on load displacing screw Direction is gradually transitions loose condition (of surface) by full state, improves efficiency, reduction spiral operating load and abrasion.During work, slurry It is continuously introduced into by the reaction warehouse feeding mouth 1020 in upstream conveying equipment autoreaction silo roof portion in reaction warehouse warehouse 1010, meets technique Design after residence time requirement, material fullness rate is 70~80% in warehouse, now load displacing screw fill material is in full of compacting State, slurry is in be full of block bulk in the helicla flute between load displacing screw helical blade 1050；When positioned at reaction warehouse bottom It is in that the material full of block bulk is continuously transferred to load displacing screw close to discharging opening when load displacing screw starts and rotated, in helicla flute 1030 one end；Slurry first passes through uniform blanking ring 1060 close to load displacing screw tail end before whereabouts, through uniform blanking ring 1060 On multi start thread blade 1062 stir and break up after, drop down onto upstream device under continuous uniform.
The reaction warehouse 13 of first reaction warehouse 10 and second therein can also be identical with the above-mentioned structure composition of decatize storehouse 7, because Material through double-screw impregnator extruding and kneading, its frictional heat temperature has been met needed for reaction warehouse reaction, so when reaction warehouse makes During with structure as decatize storehouse, steam can not be injected by steam pipe and heated, certainly in case of need, can also From steam-heated mode.
Use the chemical machine of wet strong waste paper recycling of above-mentioned wet strong waste paper recycling chemical-mechanical pulping system The percentage amounts of each dosage component are the percentage amounts for accounting for over dry raw material weight, its embodiment in tool pulping process, this method For：
Embodiment 1：Paper machine of the bleaching containing wet strength agent manufacture paper with pulp broken and leftover pieces repulping are reclaimed
Broken and leftover pieces are delivered to hydrabrusher size degradation into after the scraps of paper by chain and pan conveyor, are delivered to rotary drum and wash Wash machine 4 add water adjustment concentration be 3% carry out washing slagging-off after, inclined helix dehydrator 6 is pumped to by tablet pump 5 and is dehydrated concentration, so After be delivered to 7 decatize of decatize storehouse 15 minutes, steam pressure 0.3MPa, according to the percentage by weight for accounting for over dry raw material, into decatize In charging aperture with the humectant again of vaporific penetrating 0.1% during storehouse；Tablet sends into the leaching of the first twin-screw by the 3rd conveying worm 8 after steaming The extruding of stain machine 9 crumples into clusters shape and is concentrated into 35% concentration or so, thereafter according to the percentage by weight for accounting for over dry raw material, by counting Liquid NaOH and proper amount of clear water that pump adds 1% are measured, material and chemical impregnation medicament are highly concentrated in the machine of the first double-screw impregnator 9 After mixing, adjustment slurry is dense to send into the first reaction warehouse 10 to the control of 25% or so, pH value 11.5 or so, and reaction temperature is controlled 80 DEG C or so, 35 minutes residence times；Reaction is delivered to the second double-screw impregnator 12 by the 4th conveying worm 11 after terminating and extruded Rubbing is dissociated into bundle fiber and single fiber mixture shape and is concentrated into 35% concentration or so, thereafter according to accounting for over dry raw material Percentage by weight, by measuring pump add 1% NaOH, 2% H2O2,1% Na2SiO3,0.2% chelating agent DTPA and suitable Clear water is measured, material and chemical impregnation medicament after highly concentrated mixing, adjust slurry dense to 25% left side in the machine of the second double-screw impregnator 12 Right, pH value control sends into the second highly concentrated reaction warehouse 13 11.5 or so, and reaction temperature is controlled in 80 DEG C or so, 35 points of residence time Clock；Reaction is delivered to latency chest 15 after terminating by the 5th conveying worm 14.Slurry is diluted with water slurry in latency chest 15 Dense temperature 60 C eliminates the internal stress that fiber is produced during extruding and kneading to 3%, makes ball agglomerated fibres scattered and fully Trail, then, defibrator 17 is pumped to by stock pump 16 and discongested again, and separate removing light, heavy seeds and thick Waste material and wet-strength paper fiber, isolated wet-strength paper fiber are screened through pressurized screen 20, scummer 21 is purified, concentrator 22 Standby in storage sizing device 19 copy is stored in after concentration.
In said process, the sediment obtained after tumbler-type washing machine washing enters fixed-end forces system, de- by inclined screw The residual impurity and water of the sieve plate mesh discharge of water dispenser enter water treatment system, are back to through precipitation purification Posterior circle washed Journey.In the present embodiment, according to broken and the cleanliness factor of leftover pieces, washing step can also be omitted.
Embodiment 2：Manufacture paper with pulp broken and leftover pieces repulping of the paper machine containing wet strength agent is not bleached to reclaim
Broken and leftover pieces are delivered to hydrabrusher size degradation into the scraps of paper by chain and pan conveyor, are delivered to rotary drum washing After machine 4 adds water adjustment concentration for 4% progress washing slagging-off, inclined helix dehydrator 6 is pumped to by tablet pump 5 and is dehydrated concentration, then It is delivered to 7 decatize of decatize storehouse 25 minutes, steam pressure 0.45MPa, according to the percentage by weight for accounting for over dry raw material, is delivered to decatize In charging aperture with the humectant again of vaporific penetrating 0.12% during storehouse；Tablet sends into the first twin-screw by the 3rd conveying worm 8 after steaming The extruding of impregnator 9 crumples into clusters shape and is concentrated into 40% concentration or so, thereafter according to the percentage by weight for accounting for over dry raw material, by Measuring pump adds 1.2% H2SO4And proper amount of clear water, material and chemical impregnation medicament are highly concentrated in the machine of the first double-screw impregnator 9 After mixing, adjustment slurry is dense to send into the first reaction warehouse 10 to the control of 30% or so, pH value 6 or so, and reaction temperature is controlled at 90 DEG C Left and right, 45 minutes residence times；Reaction delivers to the second double-screw impregnator 12 by the 4th conveying worm 11 after terminating and extrudes stranding Rub and be dissociated into bundle fiber and single fiber mixture shape and be concentrated into 40% concentration or so, thereafter according to the weight for accounting for over dry raw material Percentage is measured, 2% NaOH, 4% H are added by measuring pump2O2, 1.5% Na2SiO3With 0.35% DTPA and appropriate clear Water, material and chemical impregnation medicament are in the machine of the second double-screw impregnator 12 after highly concentrated mixing, and adjustment slurry is dense to 30% or so, pH Value control sends into the second highly concentrated reaction warehouse 13 12 or so, and reaction temperature is controlled in 90 DEG C or so, 45 minutes residence times；Reaction Latency chest 15 is delivered to by the 5th conveying worm 14 after end.Slurry is diluted with water slurry dense extremely in latency chest 15 4%, 65 DEG C of temperature eliminates the internal stress that fiber is produced during extruding and kneading, ball agglomerated fibres is disperseed and is fully extended Open, then, defibrator 17 is pumped to by stock pump 16 and discongested again, and separate light removing, heavy seeds and thick waste material With wet-strength paper fiber, isolated wet-strength paper fiber is screened through pressurized screen 20, scummer 21 is purified, concentrator 22 is concentrated After be stored in standby in storage sizing device 19 copy.
In said process, the sediment obtained after tumbler-type washing machine washing enters fixed-end forces system, de- by inclined screw The residual impurity and water of the sieve plate mesh discharge of water dispenser enter water treatment system, are back to through precipitation purification Posterior circle washed Journey.In the present embodiment, according to broken and the cleanliness factor of leftover pieces, washing step can also be omitted.
Embodiment 3：Waste paper and waste paper boxboard repulping containing wet strength agent is not bleached to reclaim
Waste paper and waste paper boxboard are delivered to shredder size degradation into the scraps of paper by chain and pan conveyor, are delivered to tumbler-type washing machine After 4 add water adjustment concentration for 5% progress washing slagging-off, inclined helix dehydrator 6 is pumped to by tablet pump 5 and is dehydrated concentration, it is then defeated Deliver to 7 decatize of decatize storehouse 30 minutes, steam pressure 0.6MPa, according to the percentage by weight for accounting for over dry raw material, is delivered to decatize storehouse When charging aperture with it is vaporific spray into 0.15% humectant again；Tablet sends into the leaching of the first twin-screw by the 3rd conveying worm 8 after steaming The extruding of stain machine 9 crumples into clusters shape and is concentrated into 45% concentration or so, thereafter according to the percentage by weight for accounting for over dry raw material, by counting Measure the H that pump adds 1.5%2SO4And proper amount of clear water, material and chemical impregnation medicament are highly concentrated mixed in the machine of the first double-screw impregnator 9 After conjunction, adjustment slurry is dense to send into the first reaction warehouse 10 to the control of 35% or so, pH value 4.5 or so, and reaction temperature is controlled at 95 DEG C Left and right, 60 minutes residence times；Reaction delivers to the second double-screw impregnator 12 by the 4th conveying worm 11 after terminating and extrudes stranding Rub and be dissociated into bundle fiber and single fiber mixture shape and be concentrated into 45% concentration or so, thereafter according to the weight for accounting for over dry raw material Percentage is measured, 3% NaOH, 6% H are added by measuring pump2O2, 2% Na2SiO3EDTA and proper amount of clear water with 0.5%, Material and chemical impregnation medicament are in the machine of the second double-screw impregnator 12 after highly concentrated mixing, and adjustment slurry is dense to 35% or so, pH value Control sends into the second highly concentrated reaction warehouse 13 12.5 or so, and reaction temperature is controlled in 95 DEG C or so, 60 minutes residence times；Reaction Latency chest 15 is delivered to by the 5th conveying worm 14 after end.Slurry is diluted with water slurry dense extremely in latency chest 15 5%, temperature 70 C eliminates the internal stress that fiber is produced during extruding and kneading, ball agglomerated fibres is disperseed and is fully extended Open, then, defibrator 17 is pumped to by stock pump 16 and discongested again, and separate light removing, heavy seeds and thick waste material With wet-strength paper fiber, isolated wet-strength paper fiber is screened through pressurized screen 20, scummer 21 is purified, concentrator 22 is concentrated After be stored in standby in storage sizing device 19 copy.
In said process, the sediment obtained after tumbler-type washing machine washing enters fixed-end forces system, de- by inclined screw The residual impurity and water of the sieve plate mesh discharge of water dispenser enter water treatment system, are back to through precipitation purification Posterior circle washed Journey.
Embodiment 3 is preferred embodiment, and above-described embodiment technique is carried out respectively to the raw material of equal PAE accountings 1.0% Experiment under condition and step, as a result shows, while not reducing former pulp strength or even increasing, and realizes wet strong Waste paper fibre dissociates repulping；Wherein embodiment 1 is reduced within chemical cost 20%, fluctuation of load amplitude reduction to 15%, The fiber dissociation yield of acquisition is up to 85%.Embodiment 2 reduce chemical cost 25%, fluctuation of load amplitude reduction to 12% with Interior, the fiber dissociation yield of acquisition is up to 96%.Embodiment 3 reduces chemical cost 30%, fluctuation of load amplitude reduction to 12% Within, the fiber dissociation yield of acquisition is up to 98%.
Above example does not constitute restriction to the present invention, and relevant staff is in the scope without departing from the technology of the present invention thought It is interior, carried out it is various change and modifications, all fall within protection scope of the present invention.

Claims (8)

1. a kind of double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling, it is characterised in that this method includes：
1. material papering section：Feedstock transportation to Material disintegrator is cracked into after tablet, tumbler-type washing machine is delivered to and adds water adjustment concentration Washed for 3 ~ 5%, sediment, decontamination, material and water after washing are delivered to inclined helix dehydrator and are dehydrated；
2. decatize workshop section：Material after the dehydration that material papering section is exported is delivered to decatize storehouse, in 0.3 ~ 0.6MPa vapour pressure Decatize causes the softening of material decatize for 15 ~ 30 minutes in the range of power；
3. the first extrusion impregnating chemical mechanical processing section：Material is delivered to this by conveying worm after the steaming that decatize workshop section is exported It is extruded in section double-screw impregnator and rubs as clusters shape and be concentrated into 35 ~ 45% concentration, thereafter in this section of double-screw impregnator With the first metered chemical impregnation medicament is highly concentrated mixes, and the adjustment slurry that adds water is dense to 25 ~ 35%, and slurry pH value is controlled in acid Property in the range of, realization homogenize chemical impregnation processing after be expelled to reaction warehouse, within the temperature range of 80 ~ 95 DEG C, stop 35 ~ 60 Minute is reacted；
4. the second extrusion impregnating chemical mechanical processing section：By the slurry of the first extrusion impregnating chemical mechanical processing section reaction warehouse output Material, is delivered in this section of double-screw impregnator by conveying worm and is pressed further by rubbing for fibre bundle and single fiber mixing Thing shape is simultaneously concentrated into 35 ~ 45% concentration, high with the second metered chemical impregnation medicament in this section of double-screw impregnator thereafter Dense mixing, and the adjustment slurry that adds water is dense to 25 ~ 35%, slurry pH value control realizes the chemical impregnation processing that homogenizes in alkaline range After be expelled to reaction warehouse, within the temperature range of 80 ~ 95 DEG C, stop reacted within 35 ~ 60 minutes；
5. disappear latent and discongest section again：By the slurry of the second extrusion impregnating chemical mechanical processing section reaction warehouse output, by helical feed Machine, which is delivered in latency chest, causes scattered stretch of ball agglomerated fibres to eliminate internal stress, and the adjustment slurry that adds water is dense to 3 ~ 5%, adjustment slurry Expect temperature range be 60 ~ 70 DEG C, be pumped to defibrator thereafter by stock pump and discongested again, isolate gently, heavy seeds and Thick waste material and wet-strength paper fiber；
6. purify, screen and enriching section：It will disappear latent and discongest the isolated wet-strength paper fiber of section again, purify, press through scummer Standby in storage sizing device copy is stored in after the screening of power sieve, concentrator concentration.
2. the double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling according to claim 1, it is characterised in that： 1. the sediment impurity obtained in the material papering section after tumbler-type washing machine washing enters fixed-end forces system, de- by inclined screw The residual impurity and water of the sieve plate mesh discharge of water dispenser enter water treatment system, are back to through precipitation purification Posterior circle washed Journey.
3. the double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling according to claim 1, it is characterised in that： According to the percentage by weight for accounting for over dry raw material：2. in the decatize workshop section, the material after dehydration adds when being delivered to decatize storehouse decatize Enter 0.1% ~ 0.15% humectant again.
4. the double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling according to claim 1, it is characterised in that：
3. the slurry pH value in the first extrusion impregnating chemical mechanical processing section is controlled：Slurry pH value control System is in the range of 4.5 ~ 6；
4. the slurry pH value in the second extrusion impregnating chemical mechanical processing section is controlled：Slurry pH value control System is in the range of 11.5 ~ 12.5；The second chemical impregnation medicament is oxidant.
5. the double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling according to claim 1, it is characterised in that： According to the percentage by weight for accounting for over dry raw material：
3. the H that the first chemical impregnation medicament in the first extrusion impregnating chemical mechanical processing section is 1 ~ 1.5%2SO4Or 3 ~ 6% Alum, controlled by the slurry pH value of acid treatment in the range of 4.5 ~ 6；
4. the second chemical impregnation medicament in the second extrusion impregnating chemical mechanical processing section is oxidant, at oxidant The slurry pH value of reason is controlled in the range of 11.5 ~ 12.5；The oxidant includes 1 ~ 3% NaOH, 2 ~ 6% H2O2, 1 ~ 2% Na2SiO3With 0.2 ~ 0.5% chelating agent.
6. the double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling according to claim 5, it is characterised in that： The chelating agent is any one of DTPA or EDTA.
7. the double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling according to claim 1, it is characterised in that： According to the percentage by weight for accounting for over dry raw material：
2. in the decatize workshop section, the material after dehydration adds 0.12% humectant again when being delivered to decatize storehouse decatize；
3. the H that the first chemical impregnation medicament in the first extrusion impregnating chemical mechanical processing section is 1.2%2SO4；
4. the second chemical impregnation medicament in the second extrusion impregnating chemical mechanical processing section includes 2% NaOH, 4% H2O2、 1.5% Na2SiO3With 0.35% DTPA.
8. the double pH value chemical mechanical pulp-making methods of wet strong waste paper recycling according to claim 1, it is characterised in that： According to the percentage by weight for accounting for over dry raw material：
2. in the decatize workshop section, the material after dehydration adds 0.15% humectant again when being delivered to decatize storehouse decatize；
3. the H that the first chemical impregnation medicament in the first extrusion impregnating chemical mechanical processing section is 1.5%2SO4；
4. the second chemical impregnation medicament in the second extrusion impregnating chemical mechanical processing section includes 3% NaOH, 6% H2O2、 2% Na2SiO3With 0.5% EDTA.
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CN113445346A (en) * 2021-07-06 2021-09-28 威洋联捷(深圳)科技股份有限公司 Method for recycling and reproducing waste label paper
CN113832757A (en) * 2021-09-02 2021-12-24 浙江鹤丰新材料有限公司 Two-section extrusion and two-section impregnation bio-mechanical pulping process
CN114277590B (en) * 2021-12-31 2023-05-26 郑州运达造纸设备有限公司 Bridge-proof trough body of steaming bin
CN117654136B (en) * 2024-02-01 2024-04-02 天津骏琳科技有限责任公司 Self-cleaning recovery device for paper support packaging production wastewater

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658640A (en) * 1970-04-29 1972-04-25 American Cyanamid Co Pulping of wet strength broke containing polyvinylamide-glyoxal resin
CN101294360A (en) * 2008-04-23 2008-10-29 山东太阳纸业股份有限公司 Dry, wet strength paper dissociation agent and degradation technique thereof
CN102677514A (en) * 2012-05-08 2012-09-19 陕西科技大学 Re-pulping method for high wet strength waste paper containing PAE resin
CN103835174A (en) * 2012-11-27 2014-06-04 广州瑞辰盛达生物技术有限公司 Wet-strength waste paper pulping method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS159654B1 (en) * 1963-10-04 1975-01-31
CN100344829C (en) * 2003-12-26 2007-10-24 华泰集团有限公司 Technology for preparing alkali hydrogen peroxide chemical machinery pulping
JP2010043368A (en) * 2008-08-11 2010-02-25 Daio Paper Corp Method for recycling metal-laminated waste paper and recycled pulp from metal-laminated waste paper
CN101418531B (en) * 2008-12-11 2011-09-14 山东晨鸣纸业集团股份有限公司 Method for preparing bleached chemical thermomechanical pulp of eucalyptus and poplar mixture material
CN101638858A (en) * 2008-12-26 2010-02-03 青岛智森科技发展有限公司 New pulping process of chemical mechanical pulp (CEMP) employing oil palm EFB high concentration extrusion displacement method
CN103898791A (en) * 2012-12-25 2014-07-02 朱勇强 Wet strength waste paper repulping process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658640A (en) * 1970-04-29 1972-04-25 American Cyanamid Co Pulping of wet strength broke containing polyvinylamide-glyoxal resin
CN101294360A (en) * 2008-04-23 2008-10-29 山东太阳纸业股份有限公司 Dry, wet strength paper dissociation agent and degradation technique thereof
CN102677514A (en) * 2012-05-08 2012-09-19 陕西科技大学 Re-pulping method for high wet strength waste paper containing PAE resin
CN103835174A (en) * 2012-11-27 2014-06-04 广州瑞辰盛达生物技术有限公司 Wet-strength waste paper pulping method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
齐纸APMP生产线简介;王玉才;《黑龙江造纸》;19990930(第3期);第29-32页 *

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