CN102493251A - Papermaking red liquor sugar component using method - Google Patents
Papermaking red liquor sugar component using method Download PDFInfo
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- CN102493251A CN102493251A CN2011103935093A CN201110393509A CN102493251A CN 102493251 A CN102493251 A CN 102493251A CN 2011103935093 A CN2011103935093 A CN 2011103935093A CN 201110393509 A CN201110393509 A CN 201110393509A CN 102493251 A CN102493251 A CN 102493251A
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Abstract
The invention relates to a red liquor using method, namely a sulfite pulping papermaking waste liquid method, in particular to a papermaking red liquor sugar component using method. The papermaking red liquor sugar component using method is characterized in that the red liquor is neutralized, a bag type filter is used for removing macromolecule solid contents and colloid in the red liquor, lignosulfonate in the papermaking red liquor is removed by adopting an ultrafiltration system and a nanofiltration membrane system, and the liquid obtains sugar liquor with the transmittance of 90%, the sugar content in solute of 90% and the conductivity of 200muS/m finally after decoloration and desalination. The sugar liquor can be used for preparing acetone butanol, ethanol, methane and biopesticide in a fermentation mode, or preparing ethylene glycol, propylene glycol and other polyatomic alcohol through hydrogenation and hydrogenolysis, or preparing sweet dew sugar and wood sugar in a grading concentration and purification mode by using a simulation moving bed chromatograph. The papermaking red liquor sugar component using method solves the pollution problem of the papermaking red liquor existing for a long period, and achieves high-efficient and high-value use of the red liquor resources, especially the sugar resources.
Description
Technical field
The invention belongs to technical field of biochemical industry; Be particularly related to carbohydrate utilization of resources method in the red liquid of papermaking; Be about to lignosulfonates component in the red liquid with after saccharic composition separates through the film system, through decolouring, removal of impurities, prepared high-purity liquid glucose such as concentrate and be used for fields such as fermentation, chemical industry, food.
Background technology
The waste liquid of paper industry sulphite slurrying is called red liquid, is the main wastewater source of paper industry.Contain a large amount of lignosulfonates, sugar and other organic matters and inorganic matter in the red liquid, have very high BOD, COD and colourity,, cause the waste of a large amount of available resources simultaneously if directly discharge then not only contaminated environment.Therefore, the processing of red liquid is a major issue that solves sulphite pulp mill's environmental pollution with comprehensive utilization.
The main component of red liquid; But except that the lignosulfonates that contain the part extraction and application; Also contain 3% the sugar of having an appointment; Be mainly carbohydrate, especially mannoses such as glucose, wood sugar, mannose, cellobiose, galactolipin and generally account for more than 30% of total sugar content, thereby the efficient utilization of saccharic composition is significant to the comprehensive utilization of red liquid resource in the red liquid.The flow process of utilizing of the red liquid of papermaking is generally at present: red liquid, and---lignosulphonates are produced in hexose (pentose) fermenting process of preparing alcohol---pentose utilization (production yeast)---lignin utilization.Yet there are inhibitory action in a large amount of lignosulfonates that exist in the red liquid, furfural etc. to the direct fermentation of sugar, and most bacterial classifications can not normal growth, can only some saccharomycete higher of poor efficiency fermentation to the lignin tolerance, and fermentation yield, efficient are lower.Patent CN 101274947A has invented a kind of red liquid is filtered and has removed big molecule solid content, utilize film separation system to remove inorganic salts, carboxylate, low molecule carbohydrate and low molecule lignosulfonates then, and then concentrate drying prepares the method for lignin dry powder.This method has partly realized the comprehensive utilization of red liquid; Production efficiency is higher; Yet this method lignosulfonates in red liquid have been realized saccharic composition not being made full use of on the better basis of separating with saccharic composition, have wasted a large amount of sugared resources, still environment are produced bigger pollution simultaneously.
The present invention is based on main component in the red liquid of papermaking is the characteristics of lignosulfonates and sugar; Proposition removes different molecular weight lignosulfonates in the red liquid of pretreated papermaking through ultrafiltration, NF membrane unit equipment, utilizes ion exchange resin, charcoal absorption etc. to remove materials such as inorganic ions.After the purification; Saccharic composition content accounts for more than 90% in the solute; Can be used for bioenergies such as alcohol prepared by fermenting, butanols, biogas, or the hydrogenation hydrogenolysis prepares polyalcohols such as ethylene glycol, propylene glycol, or utilize that SMBC concentrates, refining various saccharic compositions and then preparation function be sugared.
Summary of the invention
The objective of the invention is based on the rich in sugar value of the red liquid of papermaking a kind of novel, efficient, high added value of carbohydrate resource low value, poor efficiency utilization proposition in red fluid component characteristic of papermaking and the present red liquid of papermaking, efficiently to utilize method.
Technical scheme of the present invention:
The high value of saccharic composition in the red liquid of papermaking proposed by the invention, efficiently utilize method, comprise following processing step:
(1) the red liquid preliminary treatment of papermaking: neutralization, the clarification of neutralizer, the bag filter that comprises red liquid removed materials such as big molecule solid content and the colloid in the red liquid;
(2) removal of impurity: adopt ultrafiltration, NF membrane system to remove different molecular weight lignosulfonates in the red liquid of papermaking; Utilize active carbon that red liquid is decoloured; Utilize ion exchange resin to remove the zwitterion in the red liquid; Finally obtain light transmittance 90%, sugared content 90% in the solute, electrical conductivity is the sugar juice of 200 μ S/m;
(3) utilization of sugar juice: main component is the liquid glucose of mannose, galactolipin, glucose etc., or fermenting process of preparing acetone-butanol, ethanol, biogas, biological pesticide etc.; Or prepare polyalcohols such as ethylene glycol, propylene glycol through the hydrogenation hydrogenolysis; Or utilize concentrated, the refining various saccharic compositions of SMBC classification and then prepare functions sugar such as mannose, wood sugar.
Pass through specific embodiment below, the present invention done further describing:
The specific embodiment
Embodiment 1
Calcium carbonate is regulated the red liquid of papermaking pH to 4.8～5.5; Clarification discards lower sediment, is of a size of 1 μ m bag filter and filters with holding back, and the gained molecular cut off of filtrating is 200 NF membrane; Dislysate is with 5 ‰ activated carbon decolorizing; Decolouring back liquid glucose is removed zwitterion through ion exchange resin, and the liquid glucose that obtains is concentrated, and prepares ethanol as the alcohol fermentation carbon source.
Embodiment 2
It is 4.0～5.0 that calcium carbonate is regulated the red liquid pH of papermaking; Clarification discards lower sediment, filters with holding back the bag filter that is of a size of 100 μ m, and filtrating is 1000 milipore filter through molecular cut off; Institute's dislysate is with 1% charcoal absorption impurity, decolouring; Liquid glucose is removed zwitterion through electrodialysis then, the liquid glucose that obtains is concentrated carry out the hydrogenation hydrogenolysis, polyalcohols such as preparation ethylene glycol and propylene glycol.
Embodiment 3
It is 4.8～5.5 that calcium carbonate is regulated the red liquid pH of papermaking; Clarification discards lower sediment, holds back the bag filter that is of a size of 100 μ m and filters, and the gained molecular cut off of filtrating is 200 NF membrane; The dialysis clear liquid is with 5 ‰ activated carbon decolorizing; Decolouring back liquid glucose is removed zwitterion through ion exchange resin, and the liquid glucose that obtains is concentrated, get into SMBC with saccharic composition in the liquid glucose separate respectively, concentrate, crystallization makes function sugar mannose and the sugared mixed liquor of mixing.
Claims (2)
1. the red liquid saccharic composition of papermaking utilizes method, mainly comprises following processing step:
(1) the red liquid preliminary treatment of papermaking: neutralization, the clarification of neutralizer, the bag filter that comprises red liquid removed materials such as big molecule solid content and the colloid in the red liquid;
(2) removal of impurity: adopt ultrafiltration, NF membrane system to remove different molecular weight lignosulfonates in the red liquid of papermaking; Utilize active carbon that red liquid is decoloured; Utilize ion exchange resin electrodialysis alive to remove the zwitterion in the red liquid; Finally obtain light transmittance more than 90%, sugared content is more than 90% in the solute, and electrical conductivity is the sugar juice below the 200 μ S/m;
(3) utilization of sugar juice: main component is the liquid glucose of mannose, galactolipin, glucose etc., or fermenting process of preparing acetone-butanol, ethanol, biogas, biological pesticide etc.; Or prepare polyalcohols such as ethylene glycol, propylene glycol through the hydrogenation hydrogenolysis; Or utilize concentrated, the refining various saccharic compositions of SMBC classification and then prepare functions sugar such as mannose, wood sugar.
2. the red liquid saccharic composition of papermaking according to claim 1 utilizes method; It is characterized in that the red liquid of said papermaking is meant the boiling slurries extraction gained that adopts the technology of employing acid polishing at present gained, its main component is the lignosulfonates and the various small molecular sugar of various molecular weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110393509.3A CN102493251B (en) | 2011-12-01 | 2011-12-01 | Papermaking red liquor sugar component using method |
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| CN201110393509.3A CN102493251B (en) | 2011-12-01 | 2011-12-01 | Papermaking red liquor sugar component using method |
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| CN102493251A true CN102493251A (en) | 2012-06-13 |
| CN102493251B CN102493251B (en) | 2015-05-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015246A (en) * | 2012-12-19 | 2013-04-03 | 成都连接流体分离科技有限公司 | Method for comprehensively using pulping waste water by sulfite method |
| CN103669069A (en) * | 2013-05-28 | 2014-03-26 | 上海凯鑫分离技术有限公司 | Treatment and recycle process for sulfite pulping waste liquid |
| CN103938478A (en) * | 2014-04-16 | 2014-07-23 | 芜湖富祺科技有限公司 | Cement grinding aid and method for fabricating cement grinding aid by using papermaking waste liquor |
| CN106349055A (en) * | 2016-08-24 | 2017-01-25 | 山东福洋生物科技有限公司 | Novel separation and extraction method for sodium gluconate mother liquor |
| CN109852735A (en) * | 2019-03-15 | 2019-06-07 | 中国科学院过程工程研究所 | A kind of refining technique of fructose syrup |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1379152A (en) * | 2001-11-13 | 2002-11-13 | 徐守才 | Process for reclaiming waste digestion liquid of alkaline (or neutral) straw pulp generated by sodium sulfite method |
| CN101274947A (en) * | 2008-03-05 | 2008-10-01 | 四川省高县华盛纸业有限公司 | Method for extracting lignosulphonate from sodium sulfite bamboo pulp waste liquor |
| CN101748158A (en) * | 2010-02-05 | 2010-06-23 | 南京工业大学 | Method for fermenting and preparing biological butyl alcohol by using lignocellulose biomass as raw material |
-
2011
- 2011-12-01 CN CN201110393509.3A patent/CN102493251B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1379152A (en) * | 2001-11-13 | 2002-11-13 | 徐守才 | Process for reclaiming waste digestion liquid of alkaline (or neutral) straw pulp generated by sodium sulfite method |
| CN101274947A (en) * | 2008-03-05 | 2008-10-01 | 四川省高县华盛纸业有限公司 | Method for extracting lignosulphonate from sodium sulfite bamboo pulp waste liquor |
| CN101748158A (en) * | 2010-02-05 | 2010-06-23 | 南京工业大学 | Method for fermenting and preparing biological butyl alcohol by using lignocellulose biomass as raw material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015246A (en) * | 2012-12-19 | 2013-04-03 | 成都连接流体分离科技有限公司 | Method for comprehensively using pulping waste water by sulfite method |
| CN103669069A (en) * | 2013-05-28 | 2014-03-26 | 上海凯鑫分离技术有限公司 | Treatment and recycle process for sulfite pulping waste liquid |
| CN103669069B (en) * | 2013-05-28 | 2015-10-28 | 上海凯鑫分离技术有限公司 | Spentsulfiteliquor process recovery process |
| CN103938478A (en) * | 2014-04-16 | 2014-07-23 | 芜湖富祺科技有限公司 | Cement grinding aid and method for fabricating cement grinding aid by using papermaking waste liquor |
| CN106349055A (en) * | 2016-08-24 | 2017-01-25 | 山东福洋生物科技有限公司 | Novel separation and extraction method for sodium gluconate mother liquor |
| CN109852735A (en) * | 2019-03-15 | 2019-06-07 | 中国科学院过程工程研究所 | A kind of refining technique of fructose syrup |
| CN109852735B (en) * | 2019-03-15 | 2021-04-13 | 中国科学院过程工程研究所 | Refining process method of high fructose corn syrup |
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| CN102493251B (en) | 2015-05-20 |
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