CN1908296A - Paper making process at high yield with slurry - Google Patents
Paper making process at high yield with slurry Download PDFInfo
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- CN1908296A CN1908296A CN 200510044222 CN200510044222A CN1908296A CN 1908296 A CN1908296 A CN 1908296A CN 200510044222 CN200510044222 CN 200510044222 CN 200510044222 A CN200510044222 A CN 200510044222A CN 1908296 A CN1908296 A CN 1908296A
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- slurry
- black liquor
- extraction
- black liquid
- liquid
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Abstract
The invention relates to a method for producing paper with high yield, wherein said method comprises: extracting the slurry with first black liquid, to be fed into the material chamber via collecting screw; extracting the second black liquid in the compression process; the block liquid in the first and second extractions enters into the biological bacterium pool as the biological bacterium culture liquid, to reuse the black liquid; then high-dense grinding, to obtain high-quality slurry. And the method comprises: boiling, extracting black liquid, collecting slurry, storing slurry, diluting, extruding and grinding. The invention can save more than 90% water and reduce environment pollution.
Description
Technical field
The invention belongs to pulp technology for making paper.
Background technology
At present, the Ammonium Sulfite Method that paper industry is commonly used is spurted pulping process, mainly contains ball steamings, taper jetting storehouse, shove, defibrination, screening, concentrated, pulping deposit, copies operation such as paper.The boiling disposed slurry spurts and enters the taper jetting storehouse, thereafter enter the twice Double screw pulp extruder, about black liquid extraction 80%, this black liquor only can be made adhesive and fertilizer under existence conditions, adhesive is subjected to the market restriction to retransmit the difficult survey of exhibition prospect, make fertilizer and also be in conceptual phase at present, technical immature, prospect is more remote.From another angle say 1, residual black causes middle section water to contain sulfide, causes certain difficulty for existing biochemical treatment.Quick-fried gas, biochemical efficiency descend, and the suspended substance removal rate only maintains about 15-20%, clearance 60%.Effluxing middle section water can not directly discharge, can only dilution discharge, and get off about 40 tons of ton paper clear water consumptions of whole flow process, water consumption height.2, spurt and limited the raising of spurting hardness, the taper jetting storehouse only can adapt to the semi-chemical pulp of yield below 65%, and yield rate only can maintain about 60%.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of novel high yield pulp paper technology to solve a series of problems that the black liquor emission treatment is brought, reduce environmental pollution, the conserve water resource reduces production costs, and improves pulp yield.
The technical solution adopted for the present invention to solve the technical problems is: slurry carries out the extraction of one-level black liquor after gathering screw is sent into live bottom bin, realize the extraction of secondary black liquor in the shove process, the black liquor that I and II extracts enters the biological bacteria pond and makes biological bacteria nutrient chemical liquid, the recycling of realization black liquor, then through too high dense mill, obtain the high-quality slurry, its technology comprises: boiling-one-level black liquid extraction-slurry collection-slurry storage-dilution displacement-shove-high consistency refining.
Adopt good effect of the present invention to be; Realized the recycle of black liquor, solved middle section water biochemical treatment problem, the conserve water resource has reduced environmental pollution more than 90%, has improved pulp yield and economic results in society.
The specific embodiment
With the production of corrugated paper slurry is example, and it is as follows that the concrete body of this technology is implemented operation:
1, boiling; Obtain the thick slurry of wheat straw of 75% left and right sides yield from rotary spherical digester after, after the waste gas recovery, batch turning enters conveyor screw under the ball.
2, one-level black liquid extraction; Carrying out one-level when slurry enters the one-level black liquid extraction carries.
3, slurry is collected: one-level delivers into gathering screw and sends into vertical lifting spiral by gathering screw, sends into live bottom bin by vertical lifting spiral.
4, slurry stores; Carry out the slurry deposit at live bottom bin.
5, dilution displacement; One dilution spiral is set between live bottom bin and the press master, and slurry sprays dilution in this spiral, enters secondary black liquor extraction equipment single-screw press master displacement black liquor afterwards.
6, shove: carry out the secondary black liquid extraction by the single-screw press master, 5 tons/ball of secondary replacement extraction black liquor amount, the black liquor that I and II extracts enters the biological bacteria pond and makes the biological bacteria nutrient solution, realizes the black liquor recycling.
7, high consistency refining; Carry out high consistency refining after adopting high dense feeding serew feeding.
Claims (1)
1, a kind of paper making process at high yield with slurry, it is same as the prior art that cooking process acquisition wheat straw is slightly starched process, it is characterized in that: slurry carries out the extraction of one-level black liquor after gathering screw is sent into live bottom bin, realize the extraction of secondary black liquor in the shove process, the black liquor that I and II extracts enters the biological bacteria pond and makes biological bacteria nutrient chemical liquid, the recycling of realization black liquor, then through too high dense mill, obtain the high-quality slurry, its technology comprises: boiling-one-level black liquid extraction-slurry collection-slurry storage-dilution displacement-shove-high consistency refining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044222 CN1908296A (en) | 2005-08-05 | 2005-08-05 | Paper making process at high yield with slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044222 CN1908296A (en) | 2005-08-05 | 2005-08-05 | Paper making process at high yield with slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1908296A true CN1908296A (en) | 2007-02-07 |
Family
ID=37699509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510044222 Pending CN1908296A (en) | 2005-08-05 | 2005-08-05 | Paper making process at high yield with slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1908296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142146A1 (en) * | 2009-06-13 | 2010-12-16 | 汇鑫生物浆纸股份有限公司 | Process for producing high-strength corrugated base paper |
-
2005
- 2005-08-05 CN CN 200510044222 patent/CN1908296A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142146A1 (en) * | 2009-06-13 | 2010-12-16 | 汇鑫生物浆纸股份有限公司 | Process for producing high-strength corrugated base paper |
| CN101824771B (en) * | 2009-06-13 | 2012-04-04 | 汇鑫生物浆纸股份有限公司 | Production process of high-strength corrugated base paper |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |