CN104928963B - A kind of reducing rules pulping waste liquor online high consistency extraction technique of zero-emission - Google Patents
A kind of reducing rules pulping waste liquor online high consistency extraction technique of zero-emission Download PDFInfo
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- CN104928963B CN104928963B CN201510233624.2A CN201510233624A CN104928963B CN 104928963 B CN104928963 B CN 104928963B CN 201510233624 A CN201510233624 A CN 201510233624A CN 104928963 B CN104928963 B CN 104928963B
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- 239000002699 waste material Substances 0.000 title claims abstract description 184
- 238000004537 pulping Methods 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 142
- 238000000605 extraction Methods 0.000 title claims abstract description 93
- 238000005406 washing Methods 0.000 claims abstract description 356
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000001704 evaporation Methods 0.000 claims abstract description 57
- 230000008020 evaporation Effects 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000007598 dipping method Methods 0.000 claims abstract description 48
- 239000002994 raw material Substances 0.000 claims abstract description 48
- 230000008569 process Effects 0.000 claims abstract description 43
- 238000004061 bleaching Methods 0.000 claims abstract description 39
- 239000003513 alkali Substances 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 12
- 231100000719 pollutant Toxicity 0.000 claims abstract description 12
- 238000004064 recycling Methods 0.000 claims abstract description 10
- 239000003337 fertilizer Substances 0.000 claims abstract description 9
- 229920005610 lignin Polymers 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims description 63
- 239000002002 slurry Substances 0.000 claims description 60
- 238000006243 chemical reaction Methods 0.000 claims description 46
- 238000010025 steaming Methods 0.000 claims description 31
- 238000007670 refining Methods 0.000 claims description 29
- 238000005470 impregnation Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 21
- 229920002472 Starch Polymers 0.000 claims description 18
- 235000019698 starch Nutrition 0.000 claims description 18
- 239000008107 starch Substances 0.000 claims description 15
- 238000010411 cooking Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 238000009835 boiling Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 5
- 229920002522 Wood fibre Polymers 0.000 claims description 4
- 239000002025 wood fiber Substances 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 2
- 238000011109 contamination Methods 0.000 claims 5
- 238000002386 leaching Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 10
- 238000004513 sizing Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- 239000000126 substance Substances 0.000 description 14
- 229920001131 Pulp (paper) Polymers 0.000 description 13
- 239000003814 drug Substances 0.000 description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 12
- 239000002023 wood Substances 0.000 description 11
- 238000002156 mixing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 208000028659 discharge Diseases 0.000 description 7
- 239000000706 filtrate Substances 0.000 description 6
- 229910052911 sodium silicate Inorganic materials 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 5
- 229940079593 drug Drugs 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L magnesium sulphate Substances [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000011020 pilot scale process Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 235000014633 carbohydrates Nutrition 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000007857 degradation product Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- KSSNXJHPEFVKHY-UHFFFAOYSA-N phenol;hydrate Chemical compound O.OC1=CC=CC=C1 KSSNXJHPEFVKHY-UHFFFAOYSA-N 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 238000004076 pulp bleaching Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 235000019082 Osmanthus Nutrition 0.000 description 1
- 241000333181 Osmanthus Species 0.000 description 1
- 241000168036 Populus alba Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 235000008504 concentrate Nutrition 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000003866 digestant Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000014666 liquid concentrate Nutrition 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
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- 239000012528 membrane Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- 239000010815 organic waste Substances 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- 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
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- Paper (AREA)
Abstract
The invention discloses a kind of online high consistency extraction technique of the reducing rules pulping waste liquor of zero-emission.Online high consistency extraction is carried out to pulping waste liquor, concentration then is evaporated to highly concentrated waste liquid.Slurrying production process is back to evaporation condensed water and the zero-emission that recycling realizes pulping waste liquor is carried out to evaporation raffinate.The online high consistency extraction of pulping waste liquor includes the decomposition of pollutant --- separation, counter flow washing, leading portion extraction process link；Evaporation condensed water is back to raw material washing, dosing dipping bleaching；The recycling of evaporation raffinate includes being used to produce fertilizer, alkali lignin by evaporation raffinate and subtracts recovery.And traditional machine sizing process is redesigned accordingly.
Description
Technical field
The present invention relates to pulping and paper-making field, and in particular to a kind of online high consistency extraction of reducing rules pulping waste liquor of zero-emission
Technique.
Technical background
The zero-emission of reducing rules pulping waste liquor is a developing direction, and the online high consistency extraction of reducing rules pulping waste liquor is real
The effective way of existing zero-emission.
According to《Jiangsu papermaking》The first phase in March, 2013, the " hair of China's reducing rules wastewater processing technology was done in total 98th forward delivery housing osmanthus
The article introduction of exhibition ", the eighties in last century, pulping and paper-making research institute of Canada proposed the concept of reducing rules wastewater zero discharge first,
Meadow Lake Pulp Ltd realize the zero-emission of reducing rules waste liquid using alkali recovery technology first in the world afterwards.The public affairs
Department makes raw material production BCTMP reducing rules of white poplar, produces 28.5 ten thousand tons, ton pulp waste water 10m per year3, concentration 2%.Using three pressure vapour
Liquid waste concentration is concentrated to 35% by evaporator from 2%, then causes 67% using triple effect serous coat enrichment device enrichment.Raffinate is concentrated to combustion
Burn stove burning and carry out alkali collection, evaporation condensed water is back to slurrying workshop section.2 tons of ton slurry actual consumption clear water, is mainly consumed in paper
In the evaporation drying of slurry.Some reducing rules factories in North America, Europe since 2005, including Chetwynd BC and Northern Europe Finland
The STORA EN-SO FORS companies of REAI JOUTSE NO MILL, M-REAI KASKIN NO MILL companies and Sweden use
Alkali recovery process, realizes the zero-emission of reducing rules waste water.
12.86~13.84MJ/kg of solid content fuel value in reducing rules waste water, general carbohydrate fuel value after measured
For 12.6MJ/kg, show that reducing rules waste water solid content fuel value and general carbohydrate fuel value are close, fit through combustion
Burn into the processing of row alkali collection.
Patent of invention " zero discharge treatment method for chemical mechanical pulp (patent No. CN200810019354.5) " discloses one kind
Zero discharge treatment method for chemical mechanical pulp, comprises the following steps：It is first that concentration is pre- using UF membrane for 2% reducing rules waste liquid
Concentration, 80% permeate is back to slurrying and alkali collection workshop section, and the filter liquor concentration for accounting for total wastewater flow rate 20% reaches 10%, send
Enter multiple-effect evaporation station to be further concentrated by evaporation.Concentrated residue carries out traditional alkali collection, and distilled water is back to after further stripping
Slurrying.The invention can be realized by membrane filtration to pulping waste liquor concentration realizes reducing rules zero to reducing rules using alkali recovery process
Discharge, but membrane filtration increase investment and operation expense, while it is larger to still suffer from reducing rules concentration of wastewater low water consumption
Problem.
Patent of invention " zero-emission treatment method for wastewater of chemi (patent No. 200910231012.4) " discloses one
Plant the wastewater zero emission treatment method for preparing APMP (APMP).What it was included concretely comprises the following steps：Distillation is dense
Contracting technique and alkali recovery process.To being steamed from reducing rules systemic concentration for 1.5~2.0% waste water through function of mechanical steam recompression formula
Hair device two-stage stage evaporation is concentrated into concentration and reaches 5~8%, and then reaches that the boiling produced after 12-15% with chemical slurry processes is given up
Liquid mixing is sent to alkali collection workshop section and is concentrated to 50% after-combustion, and condensed water is used for pulp washing.The invention can pass through distillation pair
Reducing rules waste liquid concentrates the zero-emission for realizing reducing rules waste liquid, but because concentration of wastewater is low, 1.5~2%, still suffer from reducing rules slurrying
During waste water yield still than larger.
Patent of invention " reducing rules evaporation pretreatment process method (patent No. CN201110147486.8) " disclosure of the invention
A kind of reducing rules alkali collection evaporation pretreatment process method, including devil liquor recovery process and alkali collection process, devil liquor recovery work
Sequence is by the filtered water collection in reducing rules production process to waste liquid intermediate pool, and alkali collection process is by the waste liquid intermediate pool of collection
Waste liquid carries out alkali collection processing, also includes following evaporation pre-treatment step before described alkali collection processing：(a) waste liquid pressure mistake
Filter, the waste liquid in waste liquid intermediate pool is filtered by pressurized screen, and the bits that filtering is produced are discharged into screening reject pond, the waste liquid row after filtering
Enter waste liquid tower and enter step (b)；(b) waste liquid after filtering is evaporated classification by evaporator and handled, and heavy dirt therein is dense
Contracting liquid is discharged into concentrating liquid pool and enters alkali collection processing, and light dirt is discharged into chip washing tank and is used for cleaning wood chip, what evaporation was produced
Plain boiled water is discharged into hot back flow water pump after being mixed into plain boiled water tower and mill dilution water and is recycled into reducing rules pulping system.The present invention has
High, the more environmentally-friendly advantage of alkali recovery efficiency.Same the problem of is the upper yield for reducing pulp-making waste-water not from source.
In summary, reducing rules alkali collection can use for reference the experience of chemical pulp alkali collection, but must solve reducing rules concentration
Low (2%), water are relatively large so as to cause the problem of alkali collection operating cost is high.
Patent of invention " circulation utilization method (201010126189.0) in stalk pulping and papermaking processes ", i.e. " spring woods mould
Formula ", is production chemical pulp by raw material of non-wood fiber, and pulp-making waste-water is concentrated using multiple-effect evaporation, and concentration raffinate is used to produce fertilizer
Material or alkali lignin, open the road of pulping waste liquor recycling.Specially：The invention is related in stalk pulping and papermaking processes
Circulation utilization method, i.e., the non-wood fibrous raw material and waste material for slurrying are obtained by getting the raw materials ready；Non-wood fibrous raw material is adopted
Slightly starched with ammonium sulfite boiling；Thick slurry shove obtains slurry and concentrated black liquid；Post processing obtains being used to make after slurry washing
The paper pulp and thin phenol water of standby paper products；Concentrated black liquid and thin phenol water mixing are concentrated by evaporation, and the liquid evaporated is recovered to obtain dirty cold
Solidifying water, residual concentrate is as fertilizer material or for preparing the concentrated black liquid of fertilizer；The waste material of foul condensate and gained of getting the raw materials ready, agriculture
One or more of mixing of plant byproduct or organic waste, base is obtained using nitrogen source or the ammonium sulfite fermentation of foul condensate
Matter or fertilizer；Or foul condensate is used for flue gas desulfurization, ammonia therein obtains digestant ammonium sulfite, middle section water with smoke reaction
Recycle-water after processing is used for the corresponding site of whole pulping process, so that the comprehensive utilization of grass type stalk is reached, for circulation
Economy provides new bright spot.But the patent of invention is not involved with the waste water that non-wood fiber (including cotton stalk) bleaches reducing rules
Process problem.
Patent of invention " a kind of method (application number CN201010254246.3) of raising utilization ratio of chemi-mechanical pulp bleaching filtrate "
A kind of method for improving utilization ratio of chemi-mechanical pulp bleaching filtrate of the disclosure of the invention, concentration that bleachery is come out is 10~30%
The bleaching filtrate direct reuse that wt pulp concentration is extracted to 20~45%wt of slurry concentration is to bleachery, and slurry is mixed before drift
Enter back into Bleaching reactor and bleached after being well mixed in clutch with bleaching chemicals, slurry.Drift is set after bleaching
White filtrate extraction element, reuse bleaching filtrate substitutes clear water or plain boiled water, realizes and saves bleaching chemical, reduces factory's clear water and uses
The purpose of amount.Ton 0.64~2 ton of water consumption of slurry can be reduced, chemical chemical consumption is saved, improves bleaching effect, slurry is improved and washes
Cleanliness；Compared with former flow, identical bleached chemical consumption, slurry bleaching whiteness can improve 2~6.5 percentage points.It can drop
Low ton starches 0.64~2 ton of water consumption, saves chemical chemical consumption, improves bleaching effect, improves slurry wash degree；With former flow phase
Than identical bleached chemical consumption, slurry bleaching whiteness can improve 2~6.5 percentage points.Problem is the drift that Infinite Cyclic is used
Pollutant in white filtrate could not be extracted from system in time, still not reduce the pollutional load of follow-up pulping waste liquor,
The waste liquid yield of follow-up pulp washing is not reduced.
The auspicious Master degree candidate's academic dissertation of Xu family of Nanjing Forestry University《Reducing rules waste water circulation enrichment technology》, paper is directed to
Solid concentration is relatively low when reducing rules waste water send alkali collection, and 0.8~2%, excessive this of consumed energy is asked when causing to be concentrated by evaporation
Topic, have studied a kind of new PRC-APMP slurrying new technological process, by increasing by four after traditional PRC-APMP slurrying flow bleaching tower
The double-screw extrusion machine of platform series connection, extracts bleaching effluent, a waste water part send alkali collection to handle by way of highly concentrated, adverse current,
Another part circulating and recovering is in highly concentrated blender dilution bleaching decoction, you can to reduce the water consumption that system is total, can pass through again
The effect of enrichment is reached in system interior circulation.Waste water solid content is improved extremely by 4.36% in PRC-APMP flows after improvement
6.7%, ton pulp waste water recovery rate is at 95%, and it is 1910.84kg that ton slurry, which extracts water consumption,.But the pulping waste liquor of the technique is carried
Take and extracted there are still the opposed rear end of flow.
Patent of invention " double helix exrusion method APMP (APMP) new pulping process (patent No.
CN200410071936.X) ", the invention discloses a kind of double helix exrusion method APMP (APMP) slurrying is new
Technique, pulping process flow step：(1) wood chip is washed：Wood chip is washed in 40 DEG C~60 DEG C water of water temperature；(2) decatize：Decatize
10-30min；(3) hot water or alkaline Pretreatment：Temperature 70 C~100 DEG C, time 20-40min, alkali charge 1.0%-3.0%
(to OD wood chip weight)；(4) fibre material squeeze to grind to tear into 1# twin screw extruders and handle and add system
Slurry bleaching decoction；(5) 1# reaction warehouses are entered；(6) fibre material enters 2# twin screw extruders and 2# reactor for treatment is same
(4)；(5) the fibre material feeding Liang Duan defibrinations workshop section of suction pulp liquor that tear is handled and abundant is ground through squeezing, defibrination is laggard
Eliminating potential pool carries out the latent processing that disappears, and then screening purification, is concentrated into slurry.The invention emphasis is not related to sewage handling problem.
In a word, existing reducing rules Zero discharge technology is reduced in reducing rules production process without fundamentally solution and made
The problem of pulp waste yield is big.
The key for solving the problems, such as reducing rules Zero discharge should be the waste liquid water produced in pulping process reduction and
The raising of corresponding concentration.
According to reducing rules slurrying mechanism, the polluter of general timber reducing rules waste water be mainly derived from production process from
Chemicals remaining in the organic compound of dissolution, process engineering and the fiber fines being lost in fibrous raw material.Its organic owner
It is lignin degradation products polysaccharide and organic acid etc., wherein lignin degradation products 30~40% to want chemical composition, polysaccharide 10~
15%, organic acid accounts for 35~40%.Reducing rules pulping process be under the environmental condition added water by the chemical of machinery and plus
The collective effect of heat carries out the processes such as extruding thread rolling defibrination to paper pulp fiber raw material and completes to discongest sub-wire into slurry, while organic matter enters
Row, which is decomposed, extracts and produces pulp-making waste-water.Traditional machine sizing process takes route first into extraction sewage after slurry bleaching, as a result
Cause water big, concentration is low.
The content of the invention
Not enough present on to overcome, the present invention is adopted with the following method：
A kind of reducing rules pulping waste liquor online high consistency extraction technique of zero-emission.It is characterized in that：
By to the online concentration of pulping waste liquor, the evaporation and concentration of pulping waste liquor, the reuse of evaporation condensed water, evaporation raffinate
Recycling realize the zero-emission of reducing rules clean manufacturing and pulping waste liquor.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Pulping waste liquor
Line is concentrated, i.e., the decomposition of chip raw material pollutant is carried out during pulping bleaching --- and separation, counter flow washing and front end are extracted.
The pulping bleaching technological process of optimization is：Chip washing (a1) --- chip steaming (b1) --- extruding tear
(MSD) (c1) --- dipping dosing (d1) --- reaction warehouse (e1) --- shove pulp washing (f1) --- extruding tear (MSD)
(g1) --- dipping dosing (h1) --- reaction warehouse (i1) --- shove pulp washing (j1) --- high consistency refining (k1) --- dosing
(l1) --- reaction warehouse (m1) --- shove pulp washing (n1) --- high consistency refining (o1) --- shove pulp washing (p1).
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Pulping process Central Plains
Expect decomposition --- separation is in chip steaming (b1), reaction warehouse (e1) --- shove pulp washing (f1), reaction warehouse of pollutant
(i1) --- shove pulp washing (j1), reaction warehouse (m1) --- shove pulp washing (n1) and shove pulp washing (p1) link are completed.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Counter flow washing is logical
--- dosing (l1) and shove pulp washing (n1) link, and then wash and starch (n1) --- dipping dosing (h1) of crossing shove pulp washing (p1) and
Shove pulp washing (j1) link.Clear water being added in shove pulp washing (p1) and completing pulp washing shove, produced waste liquid is by inversely washing
Wash and be back to dosing (l1) and shove pulp washing (n1) link, and then the waste liquid that shove pulp washing (n1) link is produced passes through counter flow washing
It is back to dipping dosing (h1) and shove pulp washing (j1) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Before pulping waste liquor
End extraction refers to that pulping waste liquor is extracted by shove pulp washing (f1) and shove pulp washing (j1) link from production process.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.The technique stream of optimization
Cheng Wei：--- --- extruding tear (MSD) (c2) --- dipping dosing (d2) --- is anti-for chip steaming (b2) for chip washing (a2)
Answer storehouse (e2) --- extruding tear (MSD) (g2) --- dipping dosing (h2) --- reaction warehouse (i2) --- shove pulp washing
(j2) --- high consistency refining (k2) --- dosing (l2) --- reaction warehouse (m2) --- shove pulp washing (n2) --- high consistency refining
(o2) --- shove pulp washing (p2).
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.It is former into slurry process
Expect decomposition --- separation is in chip steaming (b2), reaction warehouse (e2) and reaction warehouse (i2) --- shove pulp washing of pollutant
(j2) what, reaction warehouse (m2) --- shove pulp washing (n2) and shove pulp washing (p2) link were completed.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Counter flow washing is logical
--- dosing (l2) and shove pulp washing (n2) link, and then wash and starch (n2) --- dipping dosing (h2) of crossing shove pulp washing (p2) and
Shove pulp washing (j2) link.Clear water being added in shove pulp washing (p2) and completing pulp washing shove, produced waste liquid is by inversely washing
Wash and be back to dosing (l2) and shove pulp washing (n2) link, and then the waste liquid that shove pulp washing (n2) link is produced passes through counter flow washing
It is back to dipping dosing (h2) and shove pulp washing (j2) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Before pulping waste liquor
End extraction refers to that pulping waste liquor is extracted by shove pulp washing (j2) link from production process.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Substituted with thread rolling machine
Extruding ＆ Tearing Machine (MSD), and the sequentially completion extruding pulp washing thread rolling dosing process in same thread rolling machine.
The pulping bleaching technological process of optimization is：Chip washing (a3) --- chip steaming (b3) --- extrudes pulp washing thread rolling
--- impregnation storehouse (d3) --- dipping is anti-for shove pulp washing (e3) --- extruding pulp washing thread rolling dosing (f3) --- for dosing (c3)
Answering storehouse (g3), --- shove pulp washing (h3) --- --- squeeze high consistency refining (i3) by dosing (j3) --- impregnation storehouse (k3) ---
Wash and starch (l3) --- high consistency refining (m3) --- shove pulp washing (n3).
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.It is former into slurry process
Expect decomposition --- separation is at chip steaming (b3) --- extruding pulp washing thread rolling dosing (c3), the impregnation storehouse of pollutant
(d3) --- shove pulp washing (e3), extruding pulp washing thread rolling dosing (f3), impregnation storehouse (g3) --- shove pulp washing (h3), dipping
What reaction warehouse (k3) --- shove pulp washing (l3), shove pulp washing (n3) link were completed.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Counter flow washing is logical
Cross shove pulp washing (n3) --- dosing (j3) and shove pulp washing (l3) link, and then wash and starch (l3) --- extruding washing thread rolling adds
Medicine (f3) and shove pulp washing (h3) link.Clear water being added in shove pulp washing (n3) and completing pulp washing shove, produced waste liquid leads to
Cross counter flow washing and be back to dosing (j3) and shove pulp washing (l3) link, and then the waste liquid that shove pulp washing (l3) link is produced passes through
Counter flow washing is back to extruding washing thread rolling dosing (f3) and shove pulp washing (h3) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Before pulping waste liquor
End extraction refer to pulping waste liquor by extruding washing thread rolling dosing (c3), shove pulp washing (e3), extruding washing thread rolling dosing (f3),
Shove pulp washing (h3) link is extracted from production process.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.The slurrying drift of optimization
White technological process is：Chip washing (a4) --- chip steaming (b4) --- extruding pulp washing thread rolling dosing (c4) --- impregnation
Storehouse (d4) --- extruding pulp washing thread rolling dosing (f4) --- impregnation storehouse (g4) --- shove pulp washing (h4) --- high consistency refining
(i4) --- --- impregnation storehouse (k4) --- shove pulp washing (l4) --- high consistency refining (m4) --- is washed by shove for dosing (j4)
Starch (n4).
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.It is former into slurry process
Expect decomposition --- separation is at chip steaming (b4) --- extruding pulp washing thread rolling dosing (c4), the impregnation storehouse of pollutant
(d4) --- extruding pulp washing thread rolling dosing (f4), impregnation storehouse (g4) --- shove pulp washing (h4), impregnation storehouse
(k4) --- what shove pulp washing (l4), shove pulp washing (n4) link were completed.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Counter flow washing is logical
Cross shove pulp washing (n4) --- dosing (j4) and shove pulp washing (l4) link, and then wash and starch (l4) --- extruding pulp washing thread rolling adds
Medicine (f4) and shove pulp washing (h4) link.Clear water being added in shove pulp washing (n4) and completing pulp washing shove, produced waste liquid leads to
Cross counter flow washing and be back to dosing (j4) and shove pulp washing (l4) link, and then the waste liquid that shove pulp washing (l4) link is produced passes through
Counter flow washing is back to extruding pulp washing thread rolling dosing (f4) and shove pulp washing (h4) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Before pulping waste liquor
End extraction refers to pulping waste liquor by extruding pulp washing thread rolling dosing (c4), extruding pulp washing thread rolling dosing (f4), shove pulp washing (h4)
Link is extracted from production process.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.The slurrying drift of optimization
White technological process is：Chip washing (a5) --- chip steaming (b5) --- extruding tear (MSD) (c5) --- dipping dosing
(d5) --- reaction warehouse (e5) --- extruding pulp washing dipping dosing (gh5) --- reaction warehouse (i5) --- shove pulp washing (j5) ---
--- --- --- shove pulp washing (n5) --- high consistency refining (o5) --- is squeezed reaction warehouse (m5) high consistency refining (k5) for dosing (l5)
Wash and starch (p5).
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.It is former into slurry process
Decomposition --- separation is in chip steaming (b5) and reaction warehouse (e5) --- the extruding pulp washing dipping dosing (gh5) of material pollutant,
What reaction warehouse (i5) --- shove pulp washing (j5), reaction warehouse (m5) --- shove pulp washing (n5), shove pulp washing (p5) link were completed.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Counter flow washing is logical
Cross shove pulp washing (p5) --- dosing (l5) and shove pulp washing (n5) link, and then wash and starch (n5) --- extruding pulp washing dipping adds
Medicine (gh5) and shove pulp washing (j5) link.Clear water being added in shove pulp washing (p5) and completing pulp washing shove, produced waste liquid leads to
Cross counter flow washing and be back to dosing (l5) and shove pulp washing (n5) link, and then the waste liquid that shove pulp washing (n5) link is produced passes through
Counter flow washing is back to extruding pulp washing dipping dosing (gh5)) and shove pulp washing (j5) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Before pulping waste liquor
End extraction refers to that pulping waste liquor is extracted by extruding pulp washing dipping dosing (gh5), shove pulp washing (j5) link from production process
Out.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.The steaming of pulping waste liquor
Hair concentration, i.e., it is further to realize to carrying out multiple-effect evaporation after the extraction pulping waste liquor of front end is concentrated after being concentrated in line
Concentration.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Evaporation condensed water
Reuse, will evaporate foul condensate and evaporate clear condensed moisture and be not back to the raw material washing of pulping process, material cooking, dipping
Dosing, shove pulp washing link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Evaporation condensed water is returned
For raw material washing (a1), material cooking (b1), squeezing extrusion pulp washing (MSD) (c1), thread rolling dosing (d1) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Evaporation condensed water is returned
For raw material washing (a2), material cooking (b2), squeezing extrusion pulp washing (MSD) (c2), dipping dosing (d2), dipping dosing (h2)
Link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Evaporation condensed water is returned
For chip washing (a3), chip steaming (b3), extruding pulp washing thread rolling dosing (c3), shove pulp washing (e3), extruding pulp washing thread rolling
Dosing (f3), shove pulp washing (h3) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Evaporation condensed water is returned
For chip washing (a4), chip steaming (b4), extruding pulp washing thread rolling dosing (c4), extruding pulp washing thread rolling dosing (f4), shove
Pulp washing (h4) link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Evaporation condensed water is returned
For chip washing (a5), chip steaming (b5), dipping dosing (d5), extruding pulp washing dipping dosing (gh5), shove pulp washing (j5)
Link.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.The money of pulping waste liquor
Sourceization is utilized, i.e., produce fertilizer or alkali lignin to residue of the pulping waste liquor after evaporation and concentration or do alkali collection.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Impregnate dosing bleaching
To be completed in conventional reducing rules dipping bleaching action storehouse, pharmacy variety quantity, dip time and starch the process conditions such as dense with
Traditional reducing rules impregnation technology is identical, and value is in conventional process parameters range.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.Shove pulp washing passes through
Press master is completed, import slurry dense 8%~25%, outlet slurry dense 30~55%.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.High consistency refining technique
It is identical with traditional reducing rules high consistency refining technique.
Further, the online high consistency extraction technique of the reducing rules pulping waste liquor of a kind of zero-emission.The present invention is fitted simultaneously
Clean manufacturing and the zero-emission of pulping waste liquor for other non-wood fiber raw materials.
Beneficial effects of the present invention are：
1st, the online high consistency extraction of reducing rules pulping waste liquor is realized by concentrating online, reducing rules sewage quantity is substantially reduced,
It is more convenient for the evaporation and concentration of pulping sewage；
2nd, evaporation condensed water is all recycled to be used in raw material washing, material cooking, raw material dipping bleaching.
3rd, to evaporation raffinate recycling, so as to realize the zero-emission of reducing rules pulping waste liquor.
Brief description of the drawings
Fig. 1 pulping waste liquors are concentrated and high consistency extraction figure online.Including：The decomposition of pollutant --- separation, counter flow washing, system
The front end high consistency extraction of pulp waste
Fig. 2 reducing rules pulping waste liquor Zero discharging system figures.Online concentration and evaporation and concentration by pulping waste liquor, and
The zero-emission of reducing rules clean manufacturing and pulping waste liquor is realized in reuse, the recycling of evaporation raffinate to evaporation condensed water
Specific embodiment
Embodiment 1
Raw material：Air-dried wood chip, moisture content 10%, size 10~20mm × 20~30mm × 30~50mm, the place of production：Shandong Province
Liaocheng Prefecture
Implementation steps：
1. according to technological process：Chip washing (a2) --- chip steaming (b2) --- extruding tear (MSD) (c2) ---
Impregnate dosing (d2) --- reaction warehouse (e2) --- extruding tear (MSD) (g2) --- dipping dosing (h2) --- reaction warehouse
(i2) --- shove pulp washing (j2) --- high consistency refining (k2) --- dosing (l2) --- reaction warehouse (m2) --- shove pulp washing
(n2) --- high consistency refining (o2) --- shove pulp washing (p2).
2. chip washing (a2).Carried out in specification is the drum-type rinsing machines of Ф 1000 × 1000, material concentration 5% uses COD
Raw material slurry is supplemented in the mixing evaporation condensed water of 1000mg/L reuse.Condensed water is derived from gives birth to 10,000 tons/year of pilot scales
Producing line close to Shandong Qualin Paper Industry Co., Ltd. seven effect evaporation station.Moisture content 10% before raw material washing, contains after washing
Water rate 46.77%, without row outside waste water in raw material washing process.
3. chip steaming (b2).Material cooking is completed in 10,000 tons/year of continuous steamers, is fully inhaled in guarantee raw material
Carried out under conditions of receipts decoction.Process conditions are：Temperature is 95 DEG C, and the time is 30min, NaOH (100% purity) 1%,
DTPA 0.3%.Kept the skin wet with the COD of reuse in 1100mg/L foul condensates.Chip raw material moisture content is before boiling
46.77%, it is 54.50% that boiling, which terminates raw aqueous rate, without row outside waste water during material cooking.
4. extruding tear (MSD) (c2).Learn from else's experience the wood chip 1kg (by over dry gauge) of boiling, in Wen Rui Machinery Co., Ltd.s
Completed on the Extruding ＆ Tearing Machine MSD testing machines of production.Compression ratio 4:1, obtain coarse particles.
5. impregnate dosing (d2)：Dosing：Hydrogen peroxide (100% purity) 2%, the raw material weights of NaOH (100% purity) 2%
Measure percentage, Na2SiO32%, DTPA0.3%, MgSO40.01%, slurry dense 30%, with being processed through extruding tear (MSD) (c2)
To thick slurry rubbed and mix thoroughly with hand.
6. reaction warehouse (e2).Impregnation, 95 DEG C of temperature is incubated 60min.By treated thick of impregnated dosing (d2)
Slurry is fitted into polybag and progress is simulated in common steamer.
7. extruding tear (MSD) (g2).Completed on the auspicious small-sized Extruding ＆ Tearing Machine MSD testing machines in river in Shangdong Province.Compression ratio 4:1, obtain
The thick slurry torn to secondary extrusion.
8. impregnate dosing (h2).Medicament addition is：Hydrogen peroxide (100% purity) 4%, dosing：NaOH (100%
Purity) 2% raw material weight percentage, Na2SiO32%, DTPA0.3%, MgSO40.02%, slurry dense 25%.
9. reaction warehouse (i2).Impregnation, 95 DEG C of temperature is incubated 60min.By the treated thick slurry of impregnated dosing (h2)
Material is fitted into polybag and progress is simulated in common steamer.
10. shove pulp washing (j2).The shove pulp washing waste liquid produced with shove pulp washing (n2) is made shove pulp washing (j2) shove and washed
Slurry water.Dense 25% is starched after dense 15%, machine slurry are starched before shove.The pulp washing shove waste water that shove pulp washing (j2) is produced, collection, which is done, steams
Hair processing.Waste water COD after testing：47031mg/L.
11. high consistency refining (k2).In KRK300 type high-density paste mill defibrinations, slurry dense 25%.
12. dosing (l2.) hydrogen peroxide (100% purity) 2%, dosing：NaOH (100% purity) 1% raw material weight
Percentage, Na2SiO31%, DTPA 0.1%, MgSO40.02%, slurry dense 25%.The waste liquid produced with shove pulp washing (n2) dilutes
Medicament.
13. reaction warehouse (m2).Bleaching action is impregnated, 95 DEG C of temperature is incubated 60min.Will be through treated thick of dosing (l2)
Slurry is fitted into polybag and progress is simulated in common steamer.
14. shove pulp washing (n2).The shove pulp washing waste liquid produced with shove pulp washing (p2) is made shove pulp washing (n2) shove and washed
Slurry water.Dense 25% is starched after dense 15%, machine slurry are starched before shove.The pulp washing shove waste water that shove pulp washing (n2) is produced is used to impregnate and added
Medicine (h2) and shove pulp washing (j2).
15. highly concentrated mill (o2).In KRK300 type high-density paste mill defibrinations, slurry dense 25%
16. shove pulp washing (p2).With clear water as shove pulp washing (p2) pulp washing water, the waste liquid of generation is used for dosing
(l2), shove pulp washing (n2).Dense 25% is starched after dense 15%, machine slurry are starched before shove.The pulp washing shove that shove pulp washing (n2) is produced gives up
Water is used to impregnate dosing (h2) and shove pulp washing (j2).
17. paper pulp starches index test：
Wood chip bleached chemi-mechanical pulp examining report
Application Example 2：
Raw material：Air-dried wood chip, moisture content 10%, size 10~20mm × 20~30mm × 30~50mm, the place of production：Shandong Province
Liaocheng Prefecture
Pilot scale platform：10,000 tons/year of bleaching reducing rules pilot production lines of Shandong Kai Long paper industry Science and Technology Ltd.
Implementation steps：
1. according to technological process：Chip washing (a4) --- chip steaming (b4) --- extrudes pulp washing thread rolling dosing
(c4) --- impregnation storehouse (d4) --- extruding pulp washing thread rolling dosing (f4) --- impregnation storehouse (g4) --- shove pulp washing
(h4) --- high consistency refining (i4) --- dosing (j4) --- impregnation storehouse (k4) --- shove pulp washing (l4) --- highly concentrated mill
Starch (m4) --- shove pulp washing (n4) is implemented.
2. raw material washs (a4).Carried out in specification is the drum-type rinsing machines of Ф 1000 × 1000, material concentration 5% uses COD
Raw material slurry is supplemented in the mixing evaporation condensed water of 1000mg/L reuse.Condensed water is derived from gives birth to 10,000 tons/year of pilot scales
Producing line close to Shandong Qualin Paper Industry Co., Ltd. seven effect evaporation station.Moisture content 10% before raw material washing, contains after washing
Water rate 46.77%, without row outside waste water in raw material washing process.
3. material cooking (b4).Material cooking is completed in 10,000 tons/year of continuous steamers, is fully inhaled in guarantee raw material
Carried out under conditions of receipts decoction.Process conditions are：Temperature is 95 DEG C, and the time is 30min, NaOH (100% purity) 1%,
DTPA0.1%.Kept the skin wet with the COD of reuse in 1100mg/L foul condensates.Chip raw material moisture content is before boiling
46.77%, it is 54.50% that boiling, which terminates raw aqueous rate, without row outside waste water during material cooking.
4. extrude pulp washing thread rolling dosing (c4).Extruding pulp washing thread rolling dosing is sequentially realized in Q185 type thread rolling machines.Rubbing with the hands
Devaporation is handled after the waste liquid that extruding is produced is extracted as front end and collected on silk machine.Add medicament and the foul condensate of reuse
Thread rolling machine is injected after mixing to mix with slurry.Medicament addition is：Hydrogen peroxide (100% purity) 2%, dosing：NaOH
(100% purity) 2% raw material weight percentage, Na2SiO32%, DTPA 0.3%, slurry dense 25%.
Impregnation storehouse 5. (d4).Condition is：95 DEG C of insulations, time 60min in bleaching action storehouse.
6. extrude pulp washing thread rolling dosing (f4).Sequentially realize that extruding pulp washing thread rolling adds in second Q185 type thread rolling machine
Medicine.Extruded segment by thread rolling machine extrudes pulp-making waste-water during squeezing extrusion is carried out to raw material, is extracted as front end
Pulp-making waste-water collects devaporation processing.Add medicament and the waste wash liquor by counter flow washing from shove pulp washing (h4) is mixed
Injection thread rolling machine is mixed with slurry afterwards.Medicament addition is：Hydrogen peroxide (100% purity) 4%, dosing：NaOH (100%
Purity) 3% raw material weight percentage, Na2SiO33%, DTPA 0.2%, slurry dense 25%.
Impregnation storehouse 7. (g4).Bleaching is completed, condition is：95 DEG C of insulations, time 60min in bleaching action storehouse.
8. shove pulp washing (h4).Completed in ZDL450 type press masters.Import slurry dense 15%, outlet slurry dense 35%.Supplement
Shove pulp washing derives from the waste liquid produced by counter flow washing shove pulp washing (l4) with water.What shove pulp washing (h4) was produced simultaneously is useless
Water extracts as front end and evaporation and concentration processing is carried out after collection.
9. high consistency refining (i4).The defibrination on TD950 type high-density paste mills, refining concentration 35%.
10. dosing (j4).Exported in high-density paste mill and add the medicament of mixing and keep the skin wet, the moisturizing of dipping is derived from
The waste liquid produced by counter flow washing shove pulp washing (n4), slurry dense 30%, medicament：Hydrogen peroxide 2% (pure), NaHO 1%,
Na2SiO31%, DTPA 0.05%, MgSO40.01%.
Impregnation storehouse 11. (k4).Post-bleach is completed, condition is：95 DEG C of insulations, time in 3# bleaching actions storehouse
60min。
12. shove pulp washing (l4).Completed in ZDL450 type press masters.Import slurry dense 15%, outlet slurry dense 35%.Supplement
Shove derives from the waste liquid produced by counter flow washing shove pulp washing (n4) with water.The waste water that shove pulp washing (l4) is produced is as inverse
Shove pulp washing (h4) and dosing (j4) are added to washings.
13. high consistency refining (m4).The defibrination on TD950 type high-density paste mills, refining concentration 35%.
14. shove pulp washing (n4).Dense 15% is starched in the import of ZDL450 types, outlet starches dense 35%, and pulp washing water derives from clear water,
Shove waste liquid is used for the counter flow washing water of dosing (j4) and shove pulp washing (l4) as counter flow washing with water.
15. the mixing of waste water.A little extruding pulp washing thread rolling dosing (c4), extruding pulp washing thread rolling dosing will be extracted from front end
(f4) the pulping waste liquor mixing that, shove pulp washing (h4) is extracted, obtains the waste liquid after line is concentrated.After testing：Water is 5.26 tons,
COD 33178mg/L, solid content 4.83%.
16. the evaporation and concentration of pulping waste liquor.I.e. to through line concentration after waste liquid by plate and frame filter press extruding filtering after
Seven effect evaporation station concentrations of 1500 tons of Shandong Quan Lin paper industry Group Co., Ltd day processing are sent into, waste water is evaporated raffinate concentration and reaches
To 50%, and obtain clear condensed water and foul condensate.
17. the reuse of evaporation condensed water.Evaporate foul condensate COD：1100mg/L and clear condensed water COD:500mg/L, temperature
Degree is more than 60 DEG C, and fully recovering washs (a4), material cooking (b4) and extruding pulp washing thread rolling dosing (c4) process in raw material.
18. the recycling of pulping waste liquor.Pulping waste liquor is concentrated by evaporation by Shandong Qualin Paper Industry Co., Ltd.
Residue afterwards is used for the raw material that fertilizer or alkali lignin are produced.
19. paper pulp index test：
Wood chip bleached chemi-mechanical pulp examining report
Marginal data：
Fig. 1 reducing rules pulping waste liquor includes in concentration and front end high consistency extraction：
The decomposition of slurrying pollutant --- extract link, counter flow washing, the extraction of pulping waste liquor front end.
Fig. 2 reducing rules pulping waste liquor Zero discharging systems：(decomposition of pollutant --- separation, inversely washed by concentrating online
Wash, leading portion extraction process), be concentrated by evaporation, evaporative condenser Water circulation (be used for raw material washing, dosing dipping bleaching), evaporation raffinate
Recycling (including will evaporation raffinate be used to produce fertilizer, alkali lignin and subtract recovery) realize the zero of reducing rules pulping waste liquor
Discharge.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (34)
1. a kind of online high consistency extraction technique of the reducing rules pulping waste liquor of zero-emission, including pulping bleaching technique and pulping bleaching give up
Liquid in line front end high consistency extraction technique, it is characterized in that：Pass through the steaming in line front end high consistency extraction, pulping waste liquor to pulping waste liquor
Hair concentration, the reuse of evaporation condensed water, the recycling of evaporation raffinate realize the zero of reducing rules clean manufacturing and pulping waste liquor
Discharge；The pulping waste liquor in line front end high consistency extraction, i.e., point of chip raw material pollutant is carried out during pulping bleaching
Solution --- separation, counter flow washing and front end are extracted.
2. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：It is described
Pulping bleaching process is：Chip washing (a1) --- chip steaming (b1) --- extruding tear (c1) --- dipping dosing
(d1) --- --- --- extruding tear (MSD) (g1) --- dipping dosing (h1) --- is anti-for shove pulp washing (f1) for reaction warehouse (e1)
Answering storehouse (i1), --- shove pulp washing (j1) --- --- wash high consistency refining (k1) for dosing (l1) --- reaction warehouse (m1) --- by shove
Starch (n1) --- high consistency refining (o1) --- shove pulp washing (p1).
3. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Slurrying
During decomposition --- separation is in chip steaming (b1), reaction warehouse (e1) --- the shove pulp washing (f1) of contamination of raw material thing and anti-
Storehouse (i1) --- shove pulp washing (j1) and reaction warehouse (m1) --- shove pulp washing (n1) and shove pulp washing (p1) link is answered to complete
's.
4. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Inversely
Washing is by shove pulp washing (p1), and --- dosing (l1) and shove pulp washing (n1) link, and then shove pulp washing (n1) --- impregnates
Dosing (h1) and shove pulp washing (j1) link, i.e., add clear water in shove pulp washing (p1) and complete pulp washing shove, produced waste liquid
Dosing (l1) and shove pulp washing (n1) link are back to by counter flow washing, and then the waste liquid that shove pulp washing (n1) link is produced leads to
Cross counter flow washing and be back to dipping dosing (h1) and shove pulp washing (j1) link.
5. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Slurrying
The front end of waste liquid, which is extracted, refers to that pulping waste liquor is extracted by shove pulp washing (f1) and shove pulp washing (j1) link from production process
Out.
6. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：It is described
Pulping bleaching process is：Chip washing (a2) --- chip steaming (b2) --- extruding tear (c2) --- dipping dosing
(d2) --- reaction warehouse (e2) --- extruding tear (MSD) (g2) --- dipping dosing (h2) --- reaction warehouse (i2) --- shove
Pulp washing (j2) --- high consistency refining (k2) --- dosing (l2) --- reaction warehouse (m2) --- shove pulp washing (n2) --- highly concentrated mill
Starch (o2) --- shove pulp washing (p2).
7. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 6, it is characterized in that：Into slurry
During contamination of raw material thing decomposition --- separation is in chip steaming (b2), reaction warehouse (e2) and reaction warehouse (i2) --- shove
What pulp washing (j2), reaction warehouse (m2) --- shove pulp washing (n2) and shove pulp washing (p2) link were completed.
8. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 5, it is characterized in that：Inversely
Washing is by shove pulp washing (p2), and --- dosing (l2) and shove pulp washing (n2) link, and then shove pulp washing (n2) --- impregnates
Dosing (h2) and shove pulp washing (j2) link, i.e., add clear water in shove pulp washing (p2) and complete pulp washing shove, produced waste liquid
Dosing (l2) and shove pulp washing (n2) link are back to by counter flow washing, and then the waste liquid that shove pulp washing (n2) link is produced leads to
Cross counter flow washing and be back to dipping dosing (h2) and shove pulp washing (j2) link.
9. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 6, it is characterized in that：Slurrying
The front end of waste liquid, which is extracted, refers to that pulping waste liquor is extracted by shove pulp washing (j2) link from production process.
10. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 2, it is characterized in that：With
Thread rolling machine progress thread rolling processing substitutes extruding tear, and the sequentially completion extruding pulp washing thread rolling dosing work in same thread rolling machine
Sequence.
11. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Institute
Stating pulping bleaching process is：Chip washing (a3) --- chip steaming (b3) --- extruding pulp washing thread rolling dosing (c3) --- dipping
Reaction warehouse (d3) --- shove pulp washing (e3) --- extruding pulp washing thread rolling dosing (f3) --- impregnation storehouse (g3) --- shove
--- --- --- impregnation storehouse (k3) --- shove pulp washing (l3) --- is high for dosing (j3) for high consistency refining (i3) for pulp washing (h3)
Dense defibrination (m3) --- shove pulp washing (n3).
12. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 9, it is characterized in that：Into
The decomposition of contamination of raw material thing during slurry --- separation is at chip steaming (b3) --- extruding pulp washing thread rolling dosing (c3), dipping
Reaction warehouse (d3) --- shove pulp washing (e3), extruding pulp washing thread rolling dosing (f3), impregnation storehouse (g3) --- shove pulp washing
(h3) what, impregnation storehouse (k3) --- shove pulp washing (l3), shove pulp washing (n3) link were completed.
13. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 9, it is characterized in that：It is inverse
Being by shove pulp washing (n3) to washing, --- dosing (j3) and shove pulp washing (l3) link, and then shove pulp washing (l3) --- is squeezed
Compress and wash and wash thread rolling dosing (f3) and shove pulp washing (h3) link, i.e., adding clear water in shove pulp washing (n3) completes pulp washing shove, institute
The waste liquid of generation is back to dosing (j3) and shove pulp washing (l3) link by counter flow washing, and then shove pulp washing (l3) link is produced
Raw waste liquid is back to extruding washing thread rolling dosing (f3) and shove pulp washing (h3) link by counter flow washing.
14. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 10, it is characterized in that：System
The front end of pulp waste, which is extracted, refers to that pulping waste liquor is rubbed with the hands by extruding washing thread rolling dosing (c3), shove pulp washing (e3), extruding washing
Silk dosing (f3), shove pulp washing (h3) link are extracted from production process.
15. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Institute
Stating pulping bleaching process is：Chip washing (a4) --- chip steaming (b4) --- extruding pulp washing thread rolling dosing (c4) --- dipping
--- --- impregnation storehouse (g4) --- shove pulp washing (h4) --- is highly concentrated for extruding pulp washing thread rolling dosing (f4) for reaction warehouse (d4)
--- --- impregnation storehouse (k4) --- shove pulp washing (l4) --- high consistency refining (m4) --- is squeezed defibrination (i4) for dosing (j4)
Wash and starch (n4).
16. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 14, it is characterized in that：Into
The decomposition of contamination of raw material thing during slurry --- separation is at chip steaming (b4) --- extruding pulp washing thread rolling dosing (c4), dipping
Reaction warehouse (d4) --- extruding pulp washing thread rolling dosing (f4), impregnation storehouse (g4) --- shove pulp washing (h4), impregnation storehouse
(k4) --- what shove pulp washing (l4), shove pulp washing (n4) link were completed.
17. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 14, it is characterized in that：It is inverse
Being by shove pulp washing (n4) to washing, --- dosing (j4) and shove pulp washing (l4) link, and then shove pulp washing (l4) --- is squeezed
Slurry thread rolling dosing (f4) and shove pulp washing (h4) link is compressed and washed, i.e., adding clear water in shove pulp washing (n4) completes pulp washing shove, institute
The waste liquid of generation is back to dosing (j4) and shove pulp washing (l4) link by counter flow washing, and then shove pulp washing (l4) link is produced
Raw waste liquid is back to extruding pulp washing thread rolling dosing (f4) and shove pulp washing (h4) link by counter flow washing.
18. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 14, it is characterized in that：System
The front end of pulp waste, which is extracted, refers to pulping waste liquor by extruding pulp washing thread rolling dosing (c4), extruding pulp washing thread rolling dosing (f4), squeezing
(h4) link is washed and starched to extract from production process.
19. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Institute
Stating pulping bleaching process is：Chip washing (a5) --- chip steaming (b5) --- extruding tear (c5) --- dipping dosing
(d5) --- reaction warehouse (e5) --- extruding pulp washing dipping dosing (gh5) --- reaction warehouse (i5) --- shove pulp washing (j5) ---
--- --- --- shove pulp washing (n5) --- high consistency refining (o5) --- is squeezed reaction warehouse (m5) high consistency refining (k5) for dosing (l5)
Wash and starch (p5).
20. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 18, it is characterized in that：Into
The decomposition of contamination of raw material thing during slurry --- separation is in chip steaming (b5) and reaction warehouse (e5) --- extruding pulp washing dipping
Dosing (gh5), reaction warehouse (i5) --- shove pulp washing (j5), reaction warehouse (m5) --- shove pulp washing (n5), shove pulp washing (p5)
What link was completed.
21. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 18, it is characterized in that：It is inverse
Being by shove pulp washing (p5) to washing, --- dosing (l5) and shove pulp washing (n5) link, and then shove pulp washing (n5) --- is squeezed
Slurry dipping dosing (gh5) and shove pulp washing (j5) link is compressed and washed, i.e., adding clear water in shove pulp washing (p5) completes pulp washing shove, institute
The waste liquid of generation is back to dosing (l5) and shove pulp washing (n5) link by counter flow washing, and then shove pulp washing (n5) link is produced
Raw waste liquid is back to extruding pulp washing by counter flow washing and impregnates dosing (gh5) and shove pulp washing (j5) link.
22. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 18, it is characterized in that：System
The front end of pulp waste, which is extracted, refers to pulping waste liquor by extruding pulp washing dipping dosing (gh5), shove pulp washing (j5) link from production
During extract.
23. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：System
The evaporation and concentration of pulp waste, i.e., to after being concentrated in line by front end extraction pulping waste liquor concentrate after carry out multiple-effect evaporation with
Realize further concentration.
24. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Steam
The reuse of condensed water is sent out, foul condensate will be evaporated and the clear condensed moisture of evaporation is not back to the raw material washing of pulping process, original
Expect boiling, dipping dosing, shove pulp washing link.
25. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Institute
Stating technique also includes evaporative condenser Water circulation link, and evaporation condensed water is back to raw material washing (a1), material cooking (b1), extruding
Discongest pulp washing (c1), thread rolling dosing (d1) link.
26. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 6, it is characterized in that：Institute
Stating technique also includes evaporative condenser Water circulation link, and evaporation condensed water is back to raw material washing (a2), material cooking (b2), extruding
Discongest pulp washing (c2), dipping dosing (d2), dipping dosing (h2) link.
27. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 10, it is characterized in that：Institute
Stating technique also includes evaporative condenser Water circulation link, and evaporation condensed water is back to chip washing (a3), chip steaming (b3), extruding
Pulp washing thread rolling dosing (c3), shove pulp washing (e3), extruding pulp washing thread rolling dosing (f3), shove pulp washing (h3) link.
28. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 15, it is characterized in that：Institute
Stating technique also includes evaporative condenser Water circulation link, and evaporation condensed water is back to chip washing (a4), chip steaming (b4), extruding
Pulp washing thread rolling dosing (c4), extruding pulp washing thread rolling dosing (f4), shove pulp washing (h4) link.
29. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 19, it is characterized in that：Institute
Stating technique also includes evaporative condenser Water circulation link, and evaporation condensed water is back to chip washing (a5), chip steaming (b5), dipping
Dosing (d5), extruding pulp washing dipping dosing (gh5), shove pulp washing (j5) link.
30. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：System
The recycling of pulp waste, i.e., produce fertilizer or alkali lignin to residue of the pulping waste liquor after evaporation and concentration or do alkali collection.
31. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Leaching
Stain dosing bleaching is completed in conventional reducing rules dipping bleaching action storehouse, pharmacy variety quantity, dip time and the dense work of slurry
Skill condition is identical with traditional reducing rules impregnation technology, and value is in conventional process parameters range.
32. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Squeeze
Wash and starch and completed by press master, import slurry dense 15%~25%, outlet slurry dense 30~55%.
33. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：It is high
Dense refining process is identical with traditional reducing rules high consistency refining technique.
34. a kind of online high consistency extraction technique of reducing rules pulping waste liquor of zero-emission as claimed in claim 1, it is characterized in that：Institute
Technique is stated suitable for the clean manufacturing of non-wood fiber raw material and the zero-emission of pulping waste liquor.
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| CN105648819A (en) * | 2016-01-11 | 2016-06-08 | 新疆白鹭纤维有限公司 | Extraction technology for pulping black liquor |
| CN108704342B (en) * | 2018-06-05 | 2020-11-17 | 泗县田原秸秆回收再利用有限责任公司 | Waste liquid recovery equipment for paper mill |
| CN110670396B (en) * | 2019-10-15 | 2021-02-02 | 史晓菲 | Production process for preparing fulvic acid and biological fiber from straw raw material |
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| EP0746650A4 (en) * | 1992-01-29 | 1998-01-07 | Alcell Tech Inc | Pulping of fibrous plant materials and recovery of resultant by-products |
| CA2201117A1 (en) * | 1994-10-05 | 1996-04-18 | Johan Landfors | A process for treatment of effluents from a pulp producing plant |
| CN1294221A (en) * | 1999-10-30 | 2001-05-09 | 兰州节能环保工程有限责任公司 | Thermo-degradable cracking process for treating black liquid of chemical pulping |
| CN101046072B (en) * | 2006-03-28 | 2010-09-22 | 天津科技大学 | Pre-treatment process for producing bleached slurry with cotton stalk material |
| CN101215797B (en) * | 2008-01-04 | 2010-06-02 | 金东纸业（江苏）股份有限公司 | Zero discharge treatment method for chemical mechanical pulp |
| CN101220565B (en) * | 2008-01-30 | 2010-09-29 | 晏永祥 | Pulping method with zero discharge of sewage water |
| CN101435165B (en) * | 2008-12-16 | 2010-12-08 | 山东凯隆环保科技有限公司 | Two-step isolation type full non-chlorine full cotton stalk bleaching pulp cleaning production process |
| CN102092804B (en) * | 2009-12-11 | 2012-08-22 | 山东太阳纸业股份有限公司 | Zero-emission treatment method for wastewater of chemi-mechanical pulp |
| CN101899795A (en) * | 2010-08-16 | 2010-12-01 | 中国林业科学研究院林产化学工业研究所 | Method for improving utilization ratio of chemi-mechanical pulp bleaching filtrate |
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