CN107119486B - A kind of environmentally friendly deinking slag production chipboard production method - Google Patents
A kind of environmentally friendly deinking slag production chipboard production method Download PDFInfo
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- CN107119486B CN107119486B CN201710494374.7A CN201710494374A CN107119486B CN 107119486 B CN107119486 B CN 107119486B CN 201710494374 A CN201710494374 A CN 201710494374A CN 107119486 B CN107119486 B CN 107119486B
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- 239000002893 slag Substances 0.000 title claims abstract description 174
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 59
- 239000011093 chipboard Substances 0.000 title claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 77
- 239000011268 mixed slurry Substances 0.000 claims abstract description 41
- 239000000123 paper Substances 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 26
- 238000010790 dilution Methods 0.000 claims abstract description 23
- 239000012895 dilution Substances 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 210000000038 chest Anatomy 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000002562 thickening agent Substances 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 20
- 230000018044 dehydration Effects 0.000 claims description 16
- 238000006297 dehydration reaction Methods 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000010893 paper waste Substances 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- 229920001131 Pulp (paper) Polymers 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 238000005189 flocculation Methods 0.000 claims description 5
- 230000016615 flocculation Effects 0.000 claims description 5
- 238000004537 pulping Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 3
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- 230000008901 benefit Effects 0.000 description 4
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- 238000001035 drying Methods 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 4
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- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
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- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 208000023445 Congenital pulmonary airway malformation Diseases 0.000 description 1
- 241000202567 Fatsia japonica Species 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/10—Concentrating spent liquor by evaporation
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
- D21C5/025—De-inking
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
-
- 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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- Paper (AREA)
Abstract
The present invention relates to a kind of environmentally friendly deinking slag production chipboard production method, comprise the following steps：Deinking slag is collected, deinking slag mixes concentration with the reaction of flocculant mixing, deinking slag thickening pretreatment, pressafiner squeezing, the dilution of deinking slag, the storage of deinking slag, pipeline, deinking slag with ONP recycled newsprint pulps, deinking slag accounts for the accounting 25~30% of gross weight, ONP old newsprint slurries account for the accounting 70~75% of gross weight, the squeezing of mixed slurry propelling worm, dirt count, enter heat partition main frame progress dirt count through tearing up spiral, conveyor screw, heating coil；Slurry storage, be sent to paper machine side layer ONP machine chests carry out it is with slurry.Prior art is distinguished, each processing step closing of the present invention, harmless processing, reaches and voluntarily utilizes target in accordance with national legislation, deinking slag whole recycling.
Description
Technical field
The present invention relates to deinking slag and ONP recycled newsprint pulp processing technology fields, more particularly to a kind of environmentally friendly deinking slag production
Chipboard production method.
Background technology
Deinking slag caused by the recycling of paper industry waste paper, country are included according to national environmental protection regulation《National Hazard gives up
Name is recorded》, register sign：" waste classification "：HW12 dyestuffs, coating waste, " industry source "：Pulp manufacture, " waste code "：
221-001-12；" waste title "：Waste paper recycles caused deinking slag in processing procedure, " hazard property "：T (toxicity
Toxicity,T).It is included in《National Hazard waste register》Deinking slag, it is produced, storage, transport, receive, disposal must be according to
Hazardous waste is managed, and strictly observes national relevant laws and regulations.
There are following methods to handle it in the prior art：
1st, burning method：
Current more large-scale paper plant's conventional methods both at home and abroad：Deinking slag burns through suitable pretreating process Hou Song power plants for self-supply
Boiler burns, and after lime-ash, flying dust environmental protection treatment caused by burning, deinking slag environmental improvement can be achieved.Shortcoming：(1), burning method
Clean combustion technique must be used, it is necessary to control flue gas qualified discharge, prevent smoke pollution, the equipment investment of boiler CIU and
Operating cost is high, and absolute economic benefit is relatively low, investment payback time length.(2) after must being carried out to secondary pollution lime-ash and flying dust
Continuous environmental protection treatment.
The practices such as the 2nd, ocean is discarded, directly fills：Environmental regulation limits, and is not applicable generally.
3rd, supercritical water oxidation method (SCWO methods)：
Using supercritical water oxidation technique, in 25MPa pressure and more than 400 DEG C, organic matter, air (or oxygen) and water
Dissolve each other completely, organic matter aoxidizes, and reaches the purpose of removal organic polluter.Its HTHP operating condition is to equipment, material
The high request that matter proposes, and some problems present on application, limitation engineering design, application.
4th, application technology as the second resource：
The deinking slag that technical research proposes separates and recovers papermaking filler, agricultural is applied to as compost, built using production
The comprehensive utilization techniques such as sheet material, gasification recovery heat are still in the elementary step, and technological means is not also overripened, and limitation engineering is set
Meter, application.
In the prior art, deinking Pulping Line, often produce one ton of Deinking Pulp and produce 0.1~0.2 ton of over dry deinking slag, pressure
Deinking slag mass dryness fraction 40~50% after pre-processing is squeezed, produces the slurry line of 300 tons of Deinking Pulps daily, deinking slag over dry is 40~50 tons, squeezing
Wet about 100~120 tons of deinking slag, feature are that caused deinking slag quantity is big, and it stores, transported, receiving, disposal will meet country
Regulation, technical difficulty is very big, and processing cost is high.Paper mill scale at present is voluntarily used as paper making raw material, resource by the use of deinking slag
Change utilizes whole deinking slags caused by our factory's deinking Pulping Line, also without more ripe production technology.Deinking slag recycling
Processing meets country and encourages industrial technology developing direction, and research and development paper mill voluntarily utilizes deinking slag production method, scale reuse
Whole deinking slags caused by our factory, reach deinking slag recycling treatment, there is broad prospect of application.
The content of the invention
For this reason, it may be necessary to a kind of environmentally friendly deinking slag production chipboard production method is provided, for solving in the prior art not ring
Protect, the technical problem that processing cost is high, intractability is big.
To achieve the above object, a kind of environmentally friendly deinking slag production chipboard production method is inventor provided, including it is following
Step：
Deinking slag is collected：
Caused deinking slag in Deinking Pulp line flotation cell, defoaming groove equipment by current gravity or is pumped into deinking slag receipts
Collect groove；
Flocculation pretreatment：
The deinking slag gathered is sent into medicine reactor, addition flocculant is flocculated；
Concentration pretreatment：
Deinking slag after addition flocculant is sent into thickener, concentrated, the moisture content of deinking slag is by concentrating machine filter
The eyelet of net is removed；
Pressafiner squeezes：
Deinking slag after concentration is sent into pressafiner, extrusion dehydration is carried out by pressafiner；
Deinking slag dilutes：
Deinking slag after squeezing is fallen into dilution hopper from propelling worm discharge port, toward dilution hopper addition OCC slurrying
Line plain boiled water is diluted, by the mass concentration percentage dilution of deinking slag to 4~8%；
Deinking slag stores：
Deinking slag after dilution is transferred into groove by entering deinking slag through chute, deinking slag is transferred into the deinking slag in groove leads to
Cross and be pumped into workshop intermediate pool or middle storage slurry tower is stored, storage slurry tower in centre is connected by shifting pump and deinking slag transfer groove
Connect；
Deinking slag mixes concentration with ONP recycled newsprint pulps：
Deinking slag in the intermediate pool of workshop is delivered in more disk thickeners, mixed with ONP old newsprint slurries, wherein
Deinking slag accounts for the accounting 25~30% of gross weight, and ONP old newsprint slurries account for the accounting 70~75% of gross weight, the quality of deinking slag
Percentage is that the mass concentration percentage of 4~8%, ONP old newsprint slurries is 1.2~1.5%, forms mass concentration percentage
Than the mixed slurry for 1.2~1.5% dehydration concentration, more disk thickener exit mixed slurries are carried out in more disk thickeners
Mass concentration percentage be 7~12%；
Mixed slurry propelling worm squeezes：
The mixed slurry of more disk thickener discharge port concentration 7~12% is sent into inclined screw, will be mixed by inclined screw
Slurry is sent into propelling worm and squeezed；
Mixed slurry dirt count：
Propelling worm is squeezed out to the mixed slurry feeding heat partition system come to be handled, through tearing up spiral, conveying spiral shell
Rotation, heating coil enter heat partition main frame and carry out dirt count；
Mixed slurry is with slurry to manufacture paper with pulp：
By the mixed slurry after dirt count, pulp storage tank storage is sent to through dilution, the mixed slurry in pulp storage tank is sent
It is with slurry to the progress of paper machine side layer ONP machine chests, surfed the Net after dilution, fan pump punching slurry, the preceding sieve screening of net, the slurry injection of head box cloth
Drainage and formation.
As a kind of selection process of the present invention, the ONP old newsprints slurry is the old newsprint for using recovery as waste paper
Raw material, the slurry of slurry, ONP disregard messages are processed into through size degradation, highly concentrated slagging-off, fine screen, low dense slagging-off, polydisc concentration, heat partition process
The whiteness of pulp material is 50~60, the vermicelli slurry as grey board.
As a kind of selection process of the present invention, in deinking slag collection step, deinking slag collecting tank uses Liquid level,
The flow of the deinking slag of next procedure processing is sent to be automatically adjusted according to liquid level.
As a kind of selection process of the present invention, in pre-treatment step of flocculating, flocculant is PAMC
Family macromolecule polymer, the addition of flocculant is 10~20ppm.
As a kind of selection process of the present invention, in deinking slag storing step, groove, workshop intermediate pool, middle storage are transferred
Paper pulp agitator is equipped with slurry tower, deinking slag is continuously stirred.
As a kind of selection process of the present invention, pipeline is used in the course of conveying of deinking slag, pipeline is
Closed conveying, set flowmeter and density Adjusting System that its concentration is adjusted on pipeline.
As a kind of selection process of the present invention, in mixed slurry dirt count step, mixed slurry passes through heating
Steam is passed through during spiral, mixed slurry temperature is brought up to 90~105 DEG C, the mixed slurry after heating enters heat partition main frame,
The heat dispersion machine Moving plate of rotation and quiet disk inter-lobe clearance are 0.1~0.3mm.
Prior art is different from, above-mentioned technical proposal is mixed by deinking slag with ONP old newsprint slurries, ONP pulp fibers
Length is longer, and dehydration is very fast, and ONP pulp fibres are dehydrated first in mixed slurry forms one layer of filter cake, deinking slag in more disk wire sides
Middle ash content, fiber fines are trapped on ONP slurry filter cakes, to reach the purpose of dehydration concentration.By the slurry of dirt count, slurry
Expect Quality advance, mitigate paper machine net splenium, drying portion ink, Stickies deposit obstacle, will not cause paper machine forming net paste net or
Squeezing felt-cloth blocks and influences paper machine and normally manufacture paper with pulp, and paper is not in that big ink point influences presentation quality.Present invention process
Mature and reliable, equipment investment is small, and operating cost is low；Deinking slag whole Seal treatment voluntarily utilizes, and it is complete to solve paper mill deinking slag
Loopful protects governing problem；Deinking slag environment protection treating expense is saved, saves paper production cost, remarkable in economical benefits.
Embodiment
To describe the technology contents of technical scheme, construction feature, the objects and the effects in detail, below in conjunction with specific reality
Example is applied to be explained in detail.
Embodiment one
A kind of environmentally friendly deinking slag production chipboard production method, comprises the following steps：
Deinking slag is collected：
Caused deinking slag in Deinking Pulp line flotation cell, defoaming groove equipment by current gravity or is pumped into deinking slag receipts
Collect groove；Deinking slag collecting tank uses Liquid level, send the flow of the deinking slag of next procedure processing to be automatically adjusted according to liquid level.Protect
Collecting tank level stability is held, effectively prevents liquid level is too high to produce leakage.
In the present embodiment, the volume of deinking slag collecting tank is 25m3, 2500~4000L/ of deinking slag flow for being collected into
Min, concentration 1~2%, select suitable centrifuge pulp pump that deinking slag is transported to medicine reactor and mixed with flocculant and react.
Flocculation pretreatment：
The deinking slag gathered is sent into medicine reactor, addition flocculant is flocculated；Flocculant gathers for cation
Acrylic amide high molecular polymer, the addition of flocculant is 10~20ppm.That is 1m3Deinking slag solution adds 10~20 grams
Flocculant, dosage is suitably added and subtracted according to the flocculation of deinking slag, dehydrating effect.Fiber fines in deinking slag are negatively charged, with sun from
After the reaction of subtype flocculant, fiber fines polymerize to form small floc sedimentation, and water filtering performance improves.The deinking slag after flocculant is added, has taken off
Water-based to improve, under gravity, moisture content therein can be removed by the eyelet of gravity bed thickener filter screen.Cation poly- third
Acrylamide (CPAM) is chain macromolecule compound, can, absorption affine with many materials because it has a variety of active groups
Form hydrogen bond.Mainly flocculate negatively charged colloid.
Concentration pretreatment：
Deinking slag after addition flocculant is sent into thickener, concentrated, the moisture content of deinking slag is by concentrating machine filter
The eyelet of net is removed；Concentration removes most moisture content, to reach pressafiner concentration for the treatment of.
In the present embodiment, deinking slag serves the dehydration concentration of gravity bed thickener, the water of gravity bed thickener removing about 90%
Point, thickener outlet deinking slag concentration 7~8%.
Pressafiner squeezes：
Deinking slag after concentration is sent into pressafiner, extrusion dehydration is carried out by pressafiner；
In the present embodiment, deinking slag is after pressafiner squeezes, mass dryness fraction 40~50%.Deinking slag is concentrated and squeezes
Journey, deinking slag obtain initial concentration washing, purifying, and the influence to paper machine water system, papermaking chemical product reduces, and is advantageous to papermaking
Production line reuse.
Deinking slag dilutes：
Deinking slag after squeezing is fallen into dilution hopper from propelling worm discharge port, toward dilution hopper addition OCC slurrying
Line plain boiled water is diluted, by the mass concentration percentage dilution of deinking slag to 4~8%；Deinking slag after dilution can use from
Heart stock pump is pipelined to deinking slag reuse workshop, and transshipment charge is greatly reduced.
In the present embodiment, OCC Pulping Line polydisc clear filtrate plain boiled waters are selected to be diluted, dilution water Pipe installing flowmeter,
Regulating valve, accurate control dilution water, deinking slag concentration 4~8% after dilution.OCC Pulping Line plain boiled waters, it is wet to be primarily referred to as paper machine
Plain boiled water caused by portion, including plain boiled water, shower water caused by net part forming dehydration.In paper-making process, more than 95% in slurry
Water is removed by wet end.With the formation of page, slurry gradually forms complete filtering layer, fiber fines, filler on the net
Gradually decreased with the leaching of auxiliary agent, white water consistency reduces successively.By the height of concentration, the plain boiled water of wet end can be divided into enriched water and
The plain boiled water that wet end front end formation zone is filtered (at dewatering plate), is typically called enriched water by dilute plain boiled water, and the high person of concentration is reachable
0.3%.Plain boiled water caused by High Pressure Difference drying zone (at suction flat box, couch roll) is called dilute plain boiled water, the white water consistency in this portion is
0.06~0.08%.Can be with using enriched water and dilute plain boiled water in the present embodiment.
Deinking slag stores：
Deinking slag after dilution is transferred into groove by entering deinking slag through chute, deinking slag is transferred into the deinking slag in groove leads to
Cross and be pumped into workshop intermediate pool or middle storage slurry tower is stored, storage slurry tower in centre is connected by shifting pump and deinking slag transfer groove
Connect；
Transfer groove, workshop intermediate pool, middle storage are starched in tower and are equipped with paper pulp agitator, and deinking slag is continuously stirred.
Transfer groove and middle storage slurry tower is provided with paper pulp agitator and continuously stirred, ensure that deinking slag is not stratified, concentration is equal
One.This storage method compared with the conventional deinking slag open storage ground, has prevented contaminated soil, water body using container closing storage
May.
In the present embodiment, it is 60m that deinking slag, which transfers groove,3Stainless steel groove, storage slurry tower in deinking slag centre is 500m3Steel is starched
Tower, it is sufficient to meet 50 tons of over dry deinking slag continuous productions of day output or maintenance needs.
Pipeline is used in the course of conveying of deinking slag, pipeline is closed conveying, and stream is set on pipeline
Its concentration is adjusted for gauge and density Adjusting System.The deinking slag dielectric behavior of concentration 4~8% is close to same concentration paper
Slurry, can select flow, the suitable centrifuge pulp pump of lift to be pumped according to fed distance, and deinking slag is sent into deinking slag and returned
Use workshop.Flowmeter, density Adjusting System are installed on pipe-line transportation system, reach accurate metering, statistical requirements.Pipeline side
Method is closing mode of movement, prevents conveying process pollution environment, and transportation expenses are low.
In the present embodiment, pipeline is carried out from centrifuge pulp pump, 700 meters of fed distance, accomplishes continuous closing conveying,
Cost of forwarding is low.
Deinking slag mixes concentration with ONP recycled newsprint pulps：
Deinking slag in the intermediate pool of workshop is delivered in more disk thickeners, mixed with ONP old newsprint slurries, wherein
Deinking slag accounts for the accounting 28% of gross weight, and ONP old newsprint slurries account for the accounting 72% of gross weight, the mass concentration percentage of deinking slag
Than being 1.3% for the mass concentration percentage of 6%, ONP old newsprint slurries, the mixing that mass concentration percentage is 1.3% is formed
Slurry carries out dehydration concentration in more disk thickeners, and the mass concentration percentage of more disk thickener exit mixed slurries is
9%；
Because deinking slag ash content is high, the fibre length of fiber fines is short, and water filtering performance is poor, and more disk thickeners are used alone
Processing can cause the dehydration mesh eyes of more disks to block, and not take off water.ONP pulp fiber length is longer, and dehydration is very fast, compound
Middle ONP pulp fibres are dehydrated ash content, fiber fines in more disk wire sides one layer of filter cake of formation, deinking slag and are trapped in ONP slurries first
On filter cake, to reach the purpose of dehydration concentration.
Specifically, the ONP old newsprints slurry be the old newsprint for using recovery as wastepaper as raw material, through size degradation, highly concentrated remove
Slag, fine screen, low dense slagging-off, polydisc concentration, heat partition process are processed into the slurry of slurry, the whiteness of ONP old newsprint slurries for 50~
60, the vermicelli slurry as grey board.
Mixed slurry propelling worm squeezes：
The mixed slurries of more disk thickener discharge port concentration 9% is sent into inclined screw, by inclined screw by mixed slurry
Propelling worm is sent into be squeezed；Thickener exit concentration is 9%, reaches later process inclined screw concentration for the treatment of, concentration 9%
Slurry sends to propelling worm and further improves mass dryness fraction to reach the concentration for the treatment of of heat partition system.Water is stripped of in concentration process
Part, deinking slag obtains primary wash purification.Inclined screw will mix slurry and be sent into propelling worm, after propelling worm extruding, mix slurry
Material mass dryness fraction brings up to 25~30%.After improving mass dryness fraction, deinking slag, the anionic trash of ONP slurries are greatly reduced, and mix slurry
Cationic demand, so as to not influence paper machine wet end charge balance, does not influence wet close to the good slurry cationic demand of OCC waste paper
Portion's chemicals such as drying strengthening agent, retention and drainage aid agent using effect, do not influence approach flow drainage and formation.
Mixed slurry dirt count：
Propelling worm is squeezed out to the mixed slurry feeding heat partition system come to be handled, through tearing up spiral, conveying spiral shell
Rotation, heating coil enter heat partition main frame and carry out dirt count；Slurry is passed through steam when passing through heating coil, improve slurry temperature
Spend to 90~105 DEG C.Slurry after heating enters heat partition main frame, the heat dispersion machine Moving plate of rotation and quiet disk inter-lobe clearance 0.1
~0.3mm, under high-temperature and high concentration, by the slurry of Moving plate and quiet disk between cog by high shear force, mechanical friction, impulsive force,
Interfibrous frictional force, fiber such as mutually rub at the active force, and deinking slag, the ink particle in OCC slurries, sicker are from fiber
Strip down, ink particle diameter granular, particle diameter is less than 50 μm, and ink particle, sicker are dispersed in paper pulp after granular.
By the slurry of dirt count, stock quality improves, and mitigates paper machine net splenium, drying portion ink, Stickies deposit obstacle, no
Paper machine forming net paste net or squeezing felt-cloth can be caused to block and influence paper machine and normally manufacture paper with pulp, paper is not in big ink point shadow
Ring presentation quality.
Mixed slurry is with slurry to manufacture paper with pulp：
By the mixed slurry after dirt count, pulp storage tank storage is sent to through dilution, the mixed slurry in pulp storage tank is sent
It is with slurry to the progress of paper machine side layer ONP machine chests, surfed the Net after dilution, fan pump punching slurry, the preceding sieve screening of net, the slurry injection of head box cloth
Drainage and formation.Paper machine is manufactured paper with pulp normally, and grey board outward appearance and other every quality index reach quality requirement.
The present embodiment technical maturity is reliable, and equipment investment is small, and operating cost is low.Deinking slag whole Seal treatment is voluntarily sharp
With solving the problems, such as the complete environment protection treating of paper mill deinking slag, meet national legislation.Deinking slag environment protection treating expense is saved, is saved
Paper production cost, remarkable in economical benefits.Ton paper can with addition of 60~70kg deinking slags, produce per year 350,000 tons of lap machines, can environmental protection at
Deinking 2.5 ten thousand tons of deinking slags of slag are managed, save 30,000 tons of wastepaper as raw material in year.
Embodiment two
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue with ONP recycled newsprint pulp mixing concentration steps, deinking slag mixes with ONP old newsprint slurries, and deinking slag accounts for accounting for for gross weight
Than the accounting 75% that 25%, ONP old newsprint slurries account for gross weight；
Embodiment three
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue with ONP recycled newsprint pulp mixing concentration steps, deinking slag mixes with ONP old newsprint slurries, and deinking slag accounts for accounting for for gross weight
Than the accounting 70% that 30%, ONP old newsprint slurries account for gross weight；
Example IV
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue with ONP recycled newsprint pulp mixing concentration steps, the mass concentration percentage of deinking slag is 4%；
Embodiment five
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue with ONP recycled newsprint pulp mixing concentration steps, the mass concentration percentage of deinking slag is 8%；
Embodiment six
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue with ONP recycled newsprint pulp mixing concentration steps, the mass concentration percentage of ONP old newsprint slurries is 1.2%；
Embodiment seven
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue with ONP recycled newsprint pulp mixing concentration steps, the mass concentration percentage of ONP old newsprint slurries is 1.5%；
Embodiment eight
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue is dense in more disks with ONP recycled newsprint pulp mixing concentration steps, forming the mixed slurry that mass concentration percentage is 1.2%
Contracting machine carries out dehydration concentration；
Embodiment nine
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, de-
Ink residue is dense in more disks with ONP recycled newsprint pulp mixing concentration steps, forming the mixed slurry that mass concentration percentage is 1.5%
Contracting machine carries out dehydration concentration；
Embodiment ten
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, more round
The mass concentration percentage of disk thickener exit mixed slurry is 7%；
Embodiment 11
The difference of environmentally friendly deinking slag production chipboard production method and embodiment one disclosed by the present embodiment is, more round
The mass concentration percentage of disk thickener exit mixed slurry is 12%；
Prior art is distinguished, present invention process mature and reliable, equipment investment is small, and operating cost is low；Deinking slag is all closed
Processing voluntarily utilizes, and solves the problems, such as the complete environment protection treating of paper mill deinking slag；Deinking slag environment protection treating expense is saved, saves papermaking
Production cost, remarkable in economical benefits.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or terminal device including a series of elements not only include those
Key element, but also the other element including being not expressly set out, or it is this process, method, article or end also to include
The intrinsic key element of end equipment.In the absence of more restrictions, limited by sentence " including ... " or " including ... "
Key element, it is not excluded that other key element in the process including the key element, method, article or terminal device also be present.This
Outside, herein, " being more than ", " being less than ", " exceeding " etc. are interpreted as not including this number；" more than ", " following ", " within " etc. understand
It is to include this number.
Although the various embodiments described above are described, those skilled in the art once know basic wound
The property made concept, then other change and modification can be made to these embodiments, so embodiments of the invention are the foregoing is only,
Not thereby the scope of patent protection of the present invention, every equivalent structure made using description of the invention or equivalent process are limited
Conversion, or is directly or indirectly used in other related technical areas, be similarly included in the present invention scope of patent protection it
It is interior.
Claims (6)
1. a kind of environmentally friendly deinking slag production chipboard production method, it is characterised in that comprise the following steps：
Deinking slag is collected：
Caused deinking slag in Deinking Pulp line flotation cell, defoaming groove equipment by current gravity or is pumped into the collection of deinking slag
Groove；
Flocculation pretreatment：
The deinking slag gathered is sent into medicine reactor, addition flocculant is flocculated；
Concentration pretreatment：
Deinking slag after addition flocculant is sent into thickener, concentrated, the moisture of deinking slag passes through thickener filter screen
Eyelet is removed；
Pressafiner squeezes：
Deinking slag after concentration is sent into pressafiner, extrusion dehydration is carried out by pressafiner；
Deinking slag dilutes：
Deinking slag after squeezing is fallen into dilution hopper from propelling worm discharge port, it is white toward dilution hopper addition OCC Pulping Lines
Water is diluted, by the mass concentration percentage dilution of deinking slag to 4~8%；
Deinking slag stores：
Deinking slag after dilution is transferred into groove by entering deinking slag through chute, deinking slag is transferred into the deinking slag in groove passes through pump
It is sent to workshop intermediate pool or middle storage slurry tower is stored, storage slurry tower in centre transfers groove with deinking slag by shifting pump and is connected；
Deinking slag mixes concentration with ONP recycled newsprint pulps：
Deinking slag in the intermediate pool of workshop is delivered in more disk thickeners, mixed with ONP old newsprint slurries, wherein deinking
Slag accounts for the accounting 25~30% of gross weight, and ONP old newsprint slurries account for the accounting 70~75% of gross weight, the mass concentration of deinking slag
Percentage is that the mass concentration percentage of 4~8%, ONP old newsprint slurries is 1.2~1.5%, and forming mass concentration percentage is
1.2~1.5% mixed slurry carries out dehydration concentration, the matter of more disk thickener exit mixed slurries in more disk thickeners
It is 7~12% to measure percentage；
Mixed slurry propelling worm squeezes：
The mixed slurry of more disk thickener discharge port mass concentrations 7~12% is sent into inclined screw, will be mixed by inclined screw
Slurry is sent into propelling worm and squeezed；
Mixed slurry dirt count：
Propelling worm is squeezed out to the mixed slurry feeding heat partition system come to be handled, through tearing up spiral, conveyor screw, adding
Heat is threaded into heat partition main frame and carries out dirt count；
Mixed slurry is with slurry to manufacture paper with pulp：
By the mixed slurry after dirt count, pulp storage tank storage is sent to through dilution, the mixed slurry in pulp storage tank is sent to paper
Machine side layer ONP machine chests carry out with slurry, dehydration of being surfed the Net after sieve screening, the slurry injection of head box cloth before dilution, fan pump punching slurry, net
Shaping；
The ONP old newsprints slurry be the old newsprint for using recovery as wastepaper as raw material, through size degradation, highly concentrated slagging-off, fine screen, low dense
Slagging-off, polydisc concentration, heat partition process are processed into the slurry of slurry, and the whiteness of ONP old newsprint slurries is 50~60, as grey board
Vermicelli slurry.
2. environmentally friendly deinking slag production chipboard production method according to claim 1, it is characterised in that：Collected in deinking slag
In step, deinking slag collecting tank uses Liquid level, send the flow of the deinking slag of next procedure processing to be automatically adjusted according to liquid level.
3. environmentally friendly deinking slag production chipboard production method according to claim 1, it is characterised in that：Pre-processed in flocculation
In step, flocculant is PAMC family macromolecule polymer, and the addition of flocculant is 10~20ppm.
4. environmentally friendly deinking slag production chipboard production method according to claim 1, it is characterised in that：Stored in deinking slag
In step, transfer groove, workshop intermediate pool, middle storage are starched in tower and are equipped with paper pulp agitator, and deinking slag is continuously stirred.
5. environmentally friendly deinking slag production chipboard production method according to claim 1, it is characterised in that：The conveying of deinking slag
During use pipeline, pipeline is closed conveying, and flowmeter and density Adjusting System are set on pipeline
Its concentration is adjusted.
6. environmentally friendly deinking slag production chipboard production method according to claim 1, it is characterised in that：In mixed slurry heat
In decentralized processing step, mixed slurry is passed through steam when passing through heating coil, and mixed slurry temperature is brought up into 90~105 DEG C,
Mixed slurry after heating enters heat partition main frame, and the heat dispersion machine Moving plate of rotation and quiet disk inter-lobe clearance are 0.1~0.3mm.
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| CN110172857A (en) * | 2019-04-19 | 2019-08-27 | 东莞建晖纸业有限公司 | Deinked sludge recycles production technology |
| CN116334946A (en) * | 2022-09-22 | 2023-06-27 | 苏州赛维科环保技术服务有限公司 | Improved waste paper papermaking system and papermaking method thereof |
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| JP3326664B2 (en) * | 1995-03-10 | 2002-09-24 | 北越製紙株式会社 | Recycled paper containing herbal meal and method for producing the same |
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| CN102002878A (en) * | 2010-10-21 | 2011-04-06 | 广东理文造纸有限公司 | Method for recovering slurry from papermaking sewage |
| CN106087522A (en) * | 2016-07-29 | 2016-11-09 | 联盛纸业（龙海）有限公司 | A kind of production method of ash-rich height thickness chipboard |
| CN106087521A (en) * | 2016-07-29 | 2016-11-09 | 联盛纸业（龙海）有限公司 | A kind of production method using OCC slurry to substitute the DIP slurry senior coating coated duplex board with grey back of production |
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Denomination of invention: An environmentally friendly method for producing grey cardboard using deinking residue Effective date of registration: 20231222 Granted publication date: 20180406 Pledgee: Bank of Communications Ltd. Zhangzhou branch Pledgor: LIANSHENG PAPER INDUSTRY (LONGHAI) Co.,Ltd. Registration number: Y2023350000261 |