CN1151458A - Paper-making pulping process without black liquid - Google Patents
Paper-making pulping process without black liquid Download PDFInfo
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- CN1151458A CN1151458A CN 96112545 CN96112545A CN1151458A CN 1151458 A CN1151458 A CN 1151458A CN 96112545 CN96112545 CN 96112545 CN 96112545 A CN96112545 A CN 96112545A CN 1151458 A CN1151458 A CN 1151458A
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- bleaching
- paper
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- liquid
- making pulping
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Abstract
A new process for making paper pulp without black liquid includes prepn. of raw material, removing dust, bleaching, screening and storing paper pulp in depository, and features no need of cutting, digestion and flushing steps, no drainage of sewage, reuse of bleaching liquid, no need of acid and alkali, and less loss of fibres.
Description
The present invention relates to paper technology, be a kind of be the paper-making pulping process without black liquid of raw material with wheat straw or timber.
At present, China is the various places that spread all over the country, the paper mill of raw material with grass fiber or timber, family more than 6000 is arranged approximately, wherein the factory more than ten thousand tons accounts for more than 70%, most of soda pulping process technology that adopts, there is minority to adopt acid polishing technology, promptly by raw material, cut off, dedusting, boiling, flushing, screening, bleaching process is formed, in boiling, flushing, in the bleaching process, discharge large amount of sewage, suspended matter and organic substance concentration height in the water, color and luster is dark, alkalescence or acid big, biodegradability is poor, not only waste water, alkali or acid, a large amount of fibers that run off, and brought severe contamination to environment.
The objective of the invention is to design a kind of paper-making pulping process without black liquid, big to solve existing paper-making pulping process quantity of wastewater effluent, waste water, alkali or acid a large amount of fibers that run off, environmental pollution problem.
The object of the present invention is achieved like this: bleach earlier after former bleaching process is advanced to dedusting, this technology is made up of raw material, dedusting, bleaching, screening, paper pulp warehouse-in operation, and bleaching is to float the pond or floating in the tower, soaks 1-7 days with bleaching liquid.
Bleaching liquid: adopt the aqueous solution of clorox, hydrogen peroxide, sodium chlorite, chlorine or chlorine dioxide to make.
This invention with have technology now and compare and have the following advantages: 1) first bleaching can be removed cut-out, boiling, flushing operation, and flow process is short; 2) first bleaching can have been eradicated black liquor or red liquid generation root, and papermaking system is with without sewage discharge in the process, and is free from environmental pollution; 3) but bleaching liquid recycles using water wisely, without alkali or acid, reduce fiber loss; 4) small investment instant effect is convenient to promote.
Below in conjunction with technological process operation is described further:
Fig. 1 paper-making pulping process without black liquid flow chart.
Specification:
1, raw material: refer to wheat straw or timber;
2, dedusting: use roll-type dust removal machine and existing technology together;
3, bleaching liquid: the aqueous solution with clorox, hydroperoxy-, sodium chlorite, chlorine or chlorine dioxide is made, and requires chlorinty greater than 500mg/L.
4, bleaching: floating the pond or floating in the tower with bleaching liquid and soaked 1-7 days, treating to end behind the pigment complete oxidation, pull slag out after, the liquid slurry can directly screen, and the screening back becomes high-quality paper pulp, and the residue bleaching liquid can be recycled, if chlorinty can not replenished chlorinty completely, require to contain more than the cl concn 500mg/L.
5, screening: adopt vibrating screen identical with existing technology;
6, paper pulp warehouse-in: become high-quality paper pulp standby.
Claims (2)
1, a kind of paper-making pulping process without black liquid, it is characterized in that: bleach earlier after former bleaching process is advanced to dedusting, this technology is made up of raw material, dedusting, bleaching, screening, paper pulp warehouse-in operation group, and bleaching is to float the pond or floating in the tower, soaks 1-7 days with bleaching liquid.
2, paper-making pulping process according to claim 1 is characterized in that: bleaching liquid adopts the aqueous solution of clorox, hydrogen peroxide, sodium chlorite, chlorine or chlorine dioxide to make.Chlorinty is greater than 500mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96112545A CN1085755C (en) | 1996-09-12 | 1996-09-12 | Paper-making pulping process without black liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96112545A CN1085755C (en) | 1996-09-12 | 1996-09-12 | Paper-making pulping process without black liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1151458A true CN1151458A (en) | 1997-06-11 |
| CN1085755C CN1085755C (en) | 2002-05-29 |
Family
ID=5121492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96112545A Expired - Fee Related CN1085755C (en) | 1996-09-12 | 1996-09-12 | Paper-making pulping process without black liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1085755C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088481C (en) * | 1998-02-14 | 2002-07-31 | 李学敏 | Paper-pulp producing process |
| CN101831823A (en) * | 2010-05-25 | 2010-09-15 | 张贵芳 | Pollution-free pulping method for wheat straw |
| 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 |
| CN104727174A (en) * | 2013-12-18 | 2015-06-24 | 广西岑溪市英力生科技术有限公司 | Novel black liquor-free clean bamboo pulp production process with smart washing |
| CN110219192A (en) * | 2019-06-13 | 2019-09-10 | 梅州市环源再生资源开发利用有限公司 | A kind of method of rapidly extracting plant fiber production paper pulp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033085A (en) * | 1987-11-09 | 1989-05-24 | 葛长虹 | No-alkaline and no-pollution process for making cotton pulp |
| CN1055975A (en) * | 1990-04-27 | 1991-11-06 | 仝长保 | Produce the new method of cotton pulp with waste cotton |
-
1996
- 1996-09-12 CN CN96112545A patent/CN1085755C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088481C (en) * | 1998-02-14 | 2002-07-31 | 李学敏 | Paper-pulp producing process |
| CN101831823A (en) * | 2010-05-25 | 2010-09-15 | 张贵芳 | Pollution-free pulping method for wheat straw |
| 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 |
| CN104727174A (en) * | 2013-12-18 | 2015-06-24 | 广西岑溪市英力生科技术有限公司 | Novel black liquor-free clean bamboo pulp production process with smart washing |
| CN104727174B (en) * | 2013-12-18 | 2017-04-19 | 北京英力生科新材料技术有限公司 | Black liquor-free clean bamboo pulp production process with smart washing |
| CN110219192A (en) * | 2019-06-13 | 2019-09-10 | 梅州市环源再生资源开发利用有限公司 | A kind of method of rapidly extracting plant fiber production paper pulp |
| CN110219192B (en) * | 2019-06-13 | 2020-09-25 | 梅州市环源再生资源开发利用有限公司 | Method for producing paper pulp by quickly extracting plant fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1085755C (en) | 2002-05-29 |
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Addressee: Li Xuemin Document name: Notification of Termination of Patent Right |
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