CN101050600A - Combined producing process for realizing zero discharge and comprehensively utilizing in pulp production by using filter film technology - Google Patents
Combined producing process for realizing zero discharge and comprehensively utilizing in pulp production by using filter film technology Download PDFInfo
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a combined production process capable of utilizing filter membrane technique to implement zero discharge of pulp production and comprehensive utilization. It is characterized by that said production process can utilize filter membrane technique to make waste liquor produced in every independent water-using work section in the course of pulp production undergo the process of purification treatment, and make the purified water obtain circular utilization so as to implement zero discharge of waste liquor.
Description
Technical field
The present invention relates to a kind of manufacturing technique of paper pulp, particularly relate to the combined production technical method that using filter film technology is realized pulp production zero-emission and comprehensive utilization
Background technology
There are two big problems that need to be resolved hurrily in world's pulping and paper-making industry always at present: the one, and waste water pollution problem.In the black waste liquid that traditional alkaline process, sulfite pulping mashing off workshop section are produced mainly is the catabolite of lignin and carbohydrate, as vulcanize organic compounds such as lignin, dimethyl sulphide, formic acid alcohol, Methyl disulfide, these organic compounds can give out foul odour, cause COD in the waste liquid
Cr(COD) and BOD
5(biochemical oxygen demand (BOD)) component content is very high, in association with pulp bleaching workshop section, especially use in the waste liquid of villaumite bleaching, can contain more than 40 kind of organic chlorides such as chloroform and chlorinated phenol, wherein dioxin (dioxins) and furans (furans) are the carcinogens that severe toxicity is arranged.The severe contamination situation of pulping and paper-making industry causes the great attention of national governments, each country has all worked out the contaminated wastewater discharge standard according to the national conditions of oneself at the pulping and paper-making industry, various countries' papermaking enterprise and scientist are constantly making great efforts the new technology that sewage is administered in research, up to the present, nearly decades, the pollution treatment technology of paper pulp industry really had greatly improved, at first, begun to adopt the chlorine-free bleaching production technology in some enterprises, make and almost eliminated organic chloride and AOX (adsorbable organohalogen compounds) in the discharge of wastewater, some big papermaking enterprises adopt " multistage flash evaporation " and evaporation such as " vacuum and low temperature multiple-effect " method and concentrated black liquor, utilize the organic compound burning boiler in the black liquor and therefrom reclaim alkali, reduce and pollute, reduce cost, make the COD in the waste water
CrWith BOD
5Content reduce a lot.But up to now, in each enterprises in pulp and paper industry of the whole world, there is not the wastewater discharge standard of a tame enterprise to reach zero COD
CrWith zero BOD
5, do not have the real round Realization zero-emission in the continuous production of pulping and paper-making of a tame enterprise yet.That is to say, no matter the enterprises in pulp and paper industry of home and abroad all is a waste discharge everyday under the emission standard condition that government control is allowed, continue slight pollution every day environment, if but all the year round for days accumulate calculating, pulping and paper-making is still a very big pollution sources.Generally speaking, the pulping and paper-making industry belongs to " passive pollution treatment " method on the pollution treatment problem at present, that is: produce sewage earlier and afterwards remove to administer sewage again.
Second big problem that the pulping and paper-making industry needs to be resolved hurrily at present is: waste plant resources greatly.Variously be used for the timber of papermaking and the biochemical composition of non-wood plant mainly is made of cellulose, hemicellulose, three kinds of compositions of lignin, wherein cellulose comprises 40%～50%, and hemicellulose accounts for 10%～20%, and lignin accounts for 20%～30%.Pulping and paper-making mainly is to use cellulose, and all being emitted among waste liquid or be concentrated by abandoning as the fuel of burning boiler, burns the plant component of other non-cellulose, that is to say that pulping and paper-making just utilizes 40%～50% plant resources, and remaining 50% non-cellulose plant resources has gone out of use all.More than 400,000,000 ton of the paper products of the annual consumption in the whole world at present wherein just are that half paper products is made with new paper pulp, and annual 200000000 tons of paper pulp need to consume 400,000,000 tons of plant materials at least and just can create.Just have 200,000,000 tons to be given discardedly by the pulping and paper-making industry in these 400,000,000 tons of plant resourceses, if just be equivalent to have every year the timber of 3.3 billion cubic meters to be abandoned by 200,000,000 tons of timber conversions, really surprising waste is several greatly for these.It really is guilty that violation the Nature like this confers human living resources.
Mainly be lignin in the non-cellulose plant material that goes out of use, lignin is that occurring in nature quantitatively is only second to cellulosic second largest class natural macromolecular material, lignin is the aromatic polymer of phenylpropyl alcohol alkyl structure, it has the molecular structure in three-dimensional netted space, and contain multiple function, the various active group, have good physics and chemical property, therefore now used the lignin modified lignifying chemical product that produces a lot of high economic worths, as utilize the degradability of lignin to make the lignin mulch film, this mulch film has been disappeared by bacterial degradation when the maturation of crops and has become humic acid, can change soil physico-chemical property, improve the soil because of using the phenomenon that hardens that chemical fertilizer forms all the year round; Lignin can also be made the lignin glue of free of contamination part woodworking adhesive; Vanillic aldehyde, polyurethane, engineering plastics; Mortar and concrete good water reducer, impervious agent, reinforcing agent; Long-acting slow-release chemical fertilizer, surfactant, adsorbent; Heavy crude thinner in the oil drilling, profit coagulant, economic benefits and social benefits water shutoff agent, AS FILTRATION LOSS CONTROLLER; And wear-resisting reinforcing agent or the like in the rubber tyre.Lignin is a kind of prospect and natural macromolecular material with very high economic worth of being widely used in a word, and the pulping and paper-making industry is discarded more than 5,000 ten thousand tons of lignins at present annual minimum will the separation, and how huge this be waste.In addition, from the waste liquid of pulping and paper-making, also can extract other organic compound, as plant polyose, health aldehyde or the like, the result of comprehensive utilization, can make all to be used for the utilization rate of plant resources of papermaking and to bring up to about 85%～90% from 50%, economic benefit doubles.
The inventor passes on two big problems that need to be resolved hurrily of getting off for many years to the pulping and paper-making industry, inquire into and research in unremitting effort always, on the basis of summing up forefathers' experience, once repeatedly propose to realize the innovative technology method of zero-emission pollution abatement, and various processes are carried out repetition test produce with simulation, finally breaking the normal procedure, carry out interdisciplinary inter-trade mutual supplement with each other's advantages according to qualifications the method for thinking of combination instruct down, filter film technology commonly used in the desalinization is made up, grafting is in the liquid waste processing of pulping and paper-making, in papermaking, handle waste water with the filter membrane method by the operation segmentation, water after being cleaned recycles at this workshop section inner sealing, accomplish " initiatively pollution treatment ", allow sewage disappear in the production process, and do not discharge, realize zero-emission.Again with every group of filter membrane isolated non-cellulose organic compound from waste liquid, therefrom isolate macromolecule lignin, low molecular weight lignin, plant polyose, furfural or further lignin etc. is processed into the lignifying chemical product, realize comprehensive utilization.The purify liquid waste technology that realizes the cycling use of water zero-emission of this application combination filter membrane also is applicable to the enterprises in pulp and paper industry of existing various acid systems, salt method, sulphite process, industrial water is all recycled, save the consumption of water, stop all existing pollution treatment instrument operations, save chemical agent and energy cost that pollution treatment is used, reduce production costs, improve comprehensive utilization, increase by one times of economic benefit.
Summary of the invention
The purpose of this invention is to provide a kind of using filter film technology and realize the combined production technical method of pulp production zero-emission and comprehensive utilization.Mainly there are two big problems that need to be resolved hurrily in traditional alkaline process, sulphite process paper pulp manufacturing technique: the one, and the plant resources of waste paper grade (stock), only extract and use the cellulose that accounts for plant material 40%～50%, and other 50% non-cellulose plant material is all discarded the discharge or the burning that acts as a fuel in waste water.The 2nd, pollution treatment is not thorough, can not zero-emission, and promptly pollute not only water wasting and take not only electricity but also expense coal.
The present invention uses the combination filter film technology of micro-filtration (MF)/ultrafiltration (UF)/nanofiltration (NF), waste liquid to each independent water workshop section in pulp production carries out the segmentation purified treatment, can thoroughly solve above-mentioned two drawbacks in traditional paper pulp manufacturing technique: the one, the water that effluent purifying is come out all recycles in this workshop section and does not efflux, realize zero-emission, promptly economize on water not only power saving but also province's coal.The 2nd, from the organic compound separated of combination filter membrane, extract the organic compound of lignin or hemicellulose, carry out deep processing, make the plant resources utilization rate of papermaking slurry bring up to 80%～90% from 50%, realize comprehensive utilization, the economic benefit of pulp production also is doubled simultaneously, this shows a field technology revolution of the paper pulp industry that the present invention really is environmental protection, a water saving, economize on electricity, economize on coal, save plant resources, increase economic efficiency.
Purpose of the present invention and solve its technical problem underlying and adopt following technical measures to realize.
Realize the combined production technical method of pulp production zero-emission and comprehensive utilization according to the using filter film technology of the present invention's proposition, it is characterized in that using the combination filter film technology, waste liquid in the pulp production is done purified treatment, recycle, realize zero-emission, and extract the combined production process that the non-cellulose compound carries out deep processing, realized comprehensive utilization.
Purpose of the present invention and solve its technical problem underlying and can also be applied to the following technical measures to achieve further.
Aforesaid using filter film technology is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, wherein said using filter film technology, it is the combination filter film technology of using micro-filtration (MF)/ultrafiltration (UF)/nanofiltration (NF), the waste liquid that each independent water workshop section in the pulp combined production technical process is produced carries out purified treatment, because it is diversified can be used for the plant resources of slurrying, the biochemical indicator of different plants differs greatly, the production technology of its slurrying also must have multiple combinational processing method, can adjust the combination of filter membrane according to actual conditions, when having canebreak in the waste liquid, should before filter membrane, add the net filter with floating thing; When waste liquid does not need to eliminate the plasma of particulate, submicron, can be without micro-filtration (MF).
Aforesaid using filter film technology is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, wherein said zero-emission, be that each independent water workshop section is produced in the pulp combined production technical process waste liquid is after combination filter membrane purified treatment, the water that is cleaned all recycles in this workshop section, do not efflux little by little yet, promptly save water not only power saving but also province's coal, really accomplish pollution-free zero-emission.
Aforesaid using filter film technology is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, wherein said comprehensive utilization, be in pulping process, to go out of use to be dissolved in other 50% non-cellulose plant material in the waste liquid, using the combination filter film technology comes out these non-cellulose Separation of Organic Compounds from waste liquid, therefrom extract the compound deep processing in addition of lignin and hemicellulose again, obtain diversified lignin producing high-molecular chemical product, the plant material utilization rate that makes slurrying brings up to 80%～90% from 50%, has realized comprehensive utilization.
Aforesaid using filter film technology is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, wherein said combined production process, be meant that application filter membrane method multidisciplinary, interdisciplinary, biological method, physical method, chemical method, mechanical means are optimized combination, work out different combination processing technologys at different plant materials, eliminate the foul odour in the slurrying production, use chlorine-free bleaching, and can make slurrying byproduct non-cellulose organic compound be easy to deep processing.
Aforesaid using filter film technology is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, wherein said using filter film technology is realized the zero-emission of pulp production and the processing method of comprehensive utilization, be applicable to the liquid waste processing of existing acid system, alkaline process, sulphite process, Mechanical Method, ammonia process, various organic solvent pulping and papermaking enterprise too, realize the comprehensive utilization of zero-emission and plant material.
The present invention compares with chemical pulping paper making methods such as existing traditional acid system, alkaline process, sulphite, eliminated pollution, realize zero-emission, water all recycles in the production, conserves water, do not re-use the waste water pollution treatment system equipment of bulky complex, reduce investment outlay and operating cost, extract lignin, hemicellulose deep processing, make papermaking plant material utilization rate bring up to 80%～90% from 50%, realize comprehensive utilization, improve the business economic benefit.
In sum, using filter film technology of the present invention is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, has above-mentioned plurality of advantages, this application combination filter film technology grafts in the pulping and paper-making industry, thoroughly eliminated the pollution of pulping and paper-making industry, realize zero-emission, and with the fibre of plant element, hemicellulose, lignin is all extracted application simultaneously, realized comprehensive utilization, increase economic efficiency, this is a field technology revolution of pulping and paper-making industry, really is a novelty, advanced, science and practical valuable and the new invention of generally applying meaning arranged.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can implement according to the content of specification, below with relevant process of the present invention do with describe in detail as after.
The specific embodiment
Below using filter film technology of the present invention is realized the specific embodiment, requirement, feature and the effect thereof of the combined production technical method of pulp production zero-emission and comprehensive utilization, describe in detail as after.
Using filter film technology of the present invention is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, be by the combination filter film technology, in the pulping and paper-making production process, waste liquid to each independent water workshop section carries out the segmentation purified treatment, purifying waste water after handling recycled in this workshop section, do not efflux little by little, realize zero-emission, after the filter membrane processing, the whole organic compounds that contained in the waste liquid are separated by filter membrane, the compound that therefrom extracts lignin and hemicellulose again carries out deep processing, has realized comprehensive utilization, has improved economic benefit.
Above-mentioned using filter film technology, be meant the combination filter membrane method of using micro-filtration (MF)/ultrafiltration (UF)/nanofiltration (NF), wherein the aperture of micro-filtration (MF) film is 0.1～15 μ m, operating pressure is 0.07～0.10Mpa, mainly can remove the particulate in the waste liquid, the fine-grained solids of submicron, particle matter or organic colloid substance, if contain some canebreaks and floating thing in the spent pulping liquor, should be in the front of micro-filtration (MF), through the net filter, the waste liquid that will net again after filtering is transported to micro-filtration (MF) processing with pump with waste liquid elder generation.Waste liquid after micro-filtration is handled is transported to ultrafiltration (UF) with pump again and handles, and the milipore filter aperture is at 0.001～0.05 μ m, and operating pressure is 0.1～0.7Mpa, can hold back macromolecule (10000～67000) material, as big molecule lignin, protein, biology enzyme etc.The means of waste water reuse pump of handling through ultrafiltration (UF) is transported to nanofiltration (NF) processing, nanofiltration (NF) membrane aperture is 1nm, can hold back low molecular weight (200～2000) material, operating pressure is 0.5～1.5Mpa, nanofiltration (NF) can be held back low-molecular-weight organic matters such as micromolecule lignin and pentosan class and high price inorganic salts, can remove in the waste liquid 98% colourity and 95% COD
CrWith BOD
5Colored organism in the waste liquid all is electronegative, use electronegative filter membrane can and these electronegative colored organisms between form electric repulsive force, film is not formed absorption so the organic matter in the waste water easily is retained down and pollutes.The waste water of finally handling through nanofiltration (NF) has been cleaned into reusable clean water.
Above-mentioned zero-emission is meant in whole papermaking process, and the waste liquid that each independent water workshop section is produced is handled the water that after-purification comes out through the combination filter film technology and recycled in this workshop section all, does not also efflux little by little.This is " initiatively pollution treatment " method, promptly just waste liquid has all been eliminated in the production process of slurrying, does not have sewage to get rid of, and has realized zero-emission.Save big water gaging.
Above-mentioned comprehensive utilization, be meant in the combination filter membrane disposes waste liquid process, big weight organic compounds in the waste liquid all is retained down, therefrom the compound with lignin and hemicellulose carries out the modification deep processing, can process diversified valuable lignin producing high-molecular chemical product, reacting further sulfonation with NaOH and obtain the lignosulphonates of coniferyl alcohol construction unit as the lignin that will extract, is that raw material can be processed and synthesizes the very high vanillic aldehyde of price (popular name vanillic aldehyde) with it; The application lignosulphonates are raw material, by adjusting its molecular weight and functional group, and the cement water reducing agent of correctability processes efficient, high impermeabilisation, high enhancing degree; Because the molecular structure of lignin is three-dimensional netted space structure, so with lignin and the synthetic fertilizer of chemical fertilizer, have the long-acting slow-release function, every mu of soil fertilizing can be saved half, through the plant polyose that waste liquid extracts, can manufacture the xylan slurry, furfural etc.The pulping and paper-making industry almost can have been utilized the whole plants raw material all, fibre of plant element, lignin, hemicellulose can both be had a role to play and be utilized, make the utilization rate of slurrying plant material bring up to 80%～90% from 50%, this has also improved the production economic benefit of enterprises in pulp and paper industry greatly, the comprehensive utilization of real realization resource.
Above-mentioned group technology is meant alkaline process, sulphite process that the slurrying production technology is not limited to use always.Because system paper pulp is realized two targets exactly: the one, lignin and cellulose are separated, the 2nd, bleach.Decompose lignin a lot of methods are arranged: acid hydrolysis, alcoholysis, hydrogenolysis, pyrolysis, oxidative degradation, biological enzymolysis.The method that fiber is discongested with refinement has the expanded method of physics, has that machinery is rubbed with the hands, tears, rubs, squeezed, a mill, sieve method.In this all multi-method, according to the biochemical composition of different slurrying plant materials, optimum organization goes out different processing technologys, and one will eliminate the foul odour that traditional pulp-making method produces, and two want chlorine-free bleaching.Because there is chlorine bleach meeting injury operator healthy, the bleaching of applying biological enzyme, oxygen bleaching, Peracetic acid bleaching, hydrogen peroxide bleaching can both obtain bleaching effect preferably.
Above-mentioned using filter film technology is realized pulp production zero-emission and method of comprehensive utilization, the various slurrying enterprises and the papermaking enterprise that also are applicable to simultaneously existing acid system, alkaline process, sulphite process, ammonia pulping, organic solvent pulping, mechanical pulping method are used, but every all using filter films method that has sewage that waste water is arranged is used its decontamination cycle, realize zero-emission, all extraction lignin and hemicellulose compound in the non-cellulose compound that gets off through membrane retention can be carried out deep processing, reach the purpose of comprehensive utilization, improve enterprise's overall economic efficiency.
The using filter film technology that the present invention proposes is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, be that the waste liquid that each independent water workshop section in the pulp production produced by the combination filter membrane is through purified treatment, again the water that purifies is used for recycling at this workshop section inner sealing, realize zero-emission, the organic compound that is retained down is extracted to use and is processed into the macromolecular organic compound product, improve the comprehensive utilization ratio of plant resources, increased the business economic benefit.And work up different interdisciplinary optimum organization production technologies at the biochemical indicator of different plants, and eliminate foul smell, do chlorine-free bleaching.
The using filter film technology of the present invention that above-mentioned combination processing technology is constituted is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, all has many saving graces concerning technical staff of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any type of restriction, anyly be familiar with this professional designer and may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, but every do not break away from using filter film technology of the present invention realize pulp production zero-emission and comprehensive utilization combined production technical method substance or according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (6)
1, a kind of using filter film technology is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, it is characterized in that using the combination filter film technology, waste liquid in the pulp production is done purified treatment, recycle, realize zero-emission, and extract the combined production process that the non-cellulose compound carries out deep processing, realized comprehensive utilization.
2, using filter film technology according to claim 1 is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, it is characterized in that wherein said using filter film technology, it is the combination filter film technology of using micro-filtration (MF)/ultrafiltration (UF)/nanofiltration (NF), the waste liquid that each independent water workshop section in the pulp combined production technical process is produced carries out purified treatment, because it is diversified can be used for the plant resources of slurrying, the biochemical indicator of different plants differs greatly, the production technology of its slurrying also must have multiple combinational processing method, can adjust the combination of filter membrane according to actual conditions, when having canebreak in the waste liquid, should before filter membrane, add the net filter with floating thing; When waste liquid does not need to eliminate the plasma of particulate, submicron, can be without micro-filtration (MF).
3, using filter film technology according to claim 1 is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, it is characterized in that wherein said zero-emission, be that each independent water workshop section is produced in the pulp combined production technical process waste liquid is after combination filter membrane purified treatment, the water that is cleaned all recycles in this workshop section, do not efflux little by little yet, promptly save water not only power saving but also province's coal, really accomplish pollution-free zero-emission.
4, using filter film technology according to claim 1 is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, it is characterized in that wherein said comprehensive utilization, be in pulping process, to go out of use to be dissolved in other 50% non-cellulose plant material in the waste liquid, using the combination filter film technology comes out these non-cellulose Separation of Organic Compounds from waste liquid, therefrom extract the compound deep processing in addition of lignin and hemicellulose again, obtain diversified lignin producing high-molecular chemical product, the plant material utilization rate that makes slurrying brings up to 80%～90% from 50%, has realized comprehensive utilization.
5, using filter film technology according to claim 1 is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, it is characterized in that wherein said combined production process, be meant that application filter membrane method multidisciplinary, interdisciplinary, biological method, physical method, chemical method, mechanical means are optimized combination, work out different combination processing technologys at different plant materials, eliminate the foul odour in the slurrying production, use chlorine-free bleaching, and can make slurrying byproduct non-cellulose organic compound be easy to deep processing.
6, using filter film technology according to claim 1 is realized the combined production technical method of pulp production zero-emission and comprehensive utilization, it is characterized in that the zero-emission of wherein said using filter film technology realization pulp production and the processing method of comprehensive utilization, be applicable to the liquid waste processing of existing acid system, alkaline process, sulphite process, Mechanical Method, ammonia process, various organic solvent pulping and papermaking enterprise too, realize the comprehensive utilization of zero-emission and plant material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102341413A (en) * | 2009-03-09 | 2012-02-01 | 柯兰姆有限公司 | Shaped cellulose manufacturing process combined with pulp mill recovery system |
| CN101775750B (en) * | 2010-01-22 | 2012-09-05 | 葛文宇 | A clear pulp production process for realizing complete comprehensive utilization and removing three wastes |
| CN103215838A (en) * | 2013-03-11 | 2013-07-24 | 中国地质大学（武汉） | Process of wood pulp papermaking black liquor resourceful treatment |
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2006
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102341413A (en) * | 2009-03-09 | 2012-02-01 | 柯兰姆有限公司 | Shaped cellulose manufacturing process combined with pulp mill recovery system |
| CN102341413B (en) * | 2009-03-09 | 2014-09-17 | 柯兰姆有限公司 | Shaped cellulose manufacturing process combined with pulp mill recovery system |
| CN101775750B (en) * | 2010-01-22 | 2012-09-05 | 葛文宇 | A clear pulp production process for realizing complete comprehensive utilization and removing three wastes |
| CN103215838A (en) * | 2013-03-11 | 2013-07-24 | 中国地质大学（武汉） | Process of wood pulp papermaking black liquor resourceful treatment |
| CN103215838B (en) * | 2013-03-11 | 2016-02-03 | 中国地质大学（武汉） | A kind of technique to the process of wood pulp papermaking black liquor and development as resource |
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Assignee: Nanchong Chunxing plant fiber technology development Co. Ltd. Assignor: Ge Wenyu Contract fulfillment period: 2007.10.10 to 2027.6.23 contract change Contract record no.: 2008510000007 Denomination of invention: Combined producing process for realizing zero discharge and comprehensively utilizing in pulp production by using filter film technology License type: General permission Record date: 2008.8.19 |
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