CN1105802C - Diwei self-catalyzing alcohol process for pulping - Google Patents
Diwei self-catalyzing alcohol process for pulping Download PDFInfo
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- CN1105802C CN1105802C CN99115819A CN99115819A CN1105802C CN 1105802 C CN1105802 C CN 1105802C CN 99115819 A CN99115819 A CN 99115819A CN 99115819 A CN99115819 A CN 99115819A CN 1105802 C CN1105802 C CN 1105802C
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Abstract
The present invention relates to a technique for making pulp and paper, particularly to a technique for making pulp without pollution, which belongs to a technique for making pulp by a self-catalyzing alcohol method by using non-wood materials as raw materials so as to replace a traditional method for making pulp. The technique for making pulp without pollution has the advantages of no pollution, low cost, high quality of made pulp and low requirements for the scale of pulp mills, and is particularly suitable for straw pulp mills.
Description
The present invention relates to a kind of papermaking technology, especially belong to a kind of pollution-free Diwei self-catalyzing alcohol process for pulping.
At present, domestic is raw pulp with grass fibers such as reeds, adopts conventional method ubiquity cooking liquor to be difficult to administer, and pollution problem is serious.The self-catalysis ethanol pulping is a kind of pulping method without pollution, domestic still first correlative study, and abroad this research is raw material with timber all, as USP4,100,016 and USP4,764,595 two patents all are to be raw pulp with the broadleaf.
The object of the present invention is to provide a kind of is the little Diwei self-catalyzing alcohol process for pulping of pollution of raw material with careless class, to substitute traditional reed pulping process.
To achieve the above object of the invention, the present invention realizes like this, detailed process is as follows: (a) boiling: the section that clean reed is cut into 20-30 (mm), pack in the boiling vessel, by liquor ratio 1: 6-1: 12 (kg/l), add the ethanol water of 45%-60% (v/v), be rapidly heated after 170 ℃-200 ℃, under this temperature, be incubated 60-150 (min); (b) washing: with the slurry concentration of boiling is after the ethanolic solution of 45%-60% (v/v) is adjusted to concentration and is 8%-12%, move in the displacement washing device, under 40 ℃-70 ℃ condition, with concentration is that the ethanol water of 45%-60% (v/v) carries out displacement washing, and the per kilogram oven dry stock consumes washing lotion 7-12 (kg/kg oven dry stock); (c) stripping: superheated vapour is fed the displacement washing device, with the residual ethanol in the stripping pulp.
The scale to slurry factory of the invention has the advantages that requires not tight, and the performance of slurry is good, pollutes little, ethanol in the cooking waste liquor easily reclaims, byproducts such as also recyclable simultaneously lignin, furfural, acetate and hemicellulose, and its reclaimer is simple, cost is low, to the straw pulp mill particularly suitable.
The present invention is further detailed explanation below in conjunction with embodiment:
Diwei self-catalyzing alcohol process for pulping of the present invention is as follows:
(a) boiling
To obtain reed and be cut into the section of 20-30 (mm), sift out foreign material such as sand dust and grass bits, put into the withstand voltage Stainless Steel jar of 600ml, add the ethanol water of 50% (v/v) by liquor ratio 1: 8, add be heated to 190 ℃ in the oil bath after, under this temperature, be incubated, temperature retention time 140min, boiling finishes;
(b) washing
With the slurry after the above-mentioned boiling, move in the displacement washing device, be adjusted to concentration 12% with the ethanolic solution of 50% (v/v), wash the about 10g of every gram oven dry stock consumption washing lotion with the ethanol waters of 50% (v/v) down at 50 ℃.
(c) stripping
Superheated vapour is fed the displacement washing device, go out to remain in ethanol in the slurry with stripping.
Raw material of the present invention are non-timber, more than be that raw material is one of them with reed reed.
Claims (1)
- A kind of Diwei self-catalyzing alcohol process for pulping mainly comprises boiling, washing and stripping plurality of processes, it is characterized in that:(a) boilingClean reed reed is cut into the section of 20mm-30mm, in the boiling vessel of packing into, by liquor ratio 1: 6-1: 12 (kg/l), adds the ethanol water of 45%-60% (v/v), be rapidly heated after 170 ℃-200 ℃, and insulation 60min-150min;(b) washingWith the slurry concentration of boiling gained is that to be adjusted to concentration be 8%-12% for the ethanol water of 45%-60% (v/v), move into then in the displacement washing device, under 40 ℃-70 ℃ condition, with concentration is that the ethanol water of 45%-60% (v/v) carries out displacement washing, and the per kilogram oven dry stock consumes washing lotion 7kg-12kg;(c) strippingSuperheated vapour is fed the displacement washing device, residual ethanol in coming out to starch with stripping.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN99115819A CN1105802C (en) | 1999-07-19 | 1999-07-19 | Diwei self-catalyzing alcohol process for pulping |
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CN99115819A CN1105802C (en) | 1999-07-19 | 1999-07-19 | Diwei self-catalyzing alcohol process for pulping |
Publications (2)
Publication Number | Publication Date |
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CN1281074A CN1281074A (en) | 2001-01-24 |
CN1105802C true CN1105802C (en) | 2003-04-16 |
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CN99115819A Expired - Fee Related CN1105802C (en) | 1999-07-19 | 1999-07-19 | Diwei self-catalyzing alcohol process for pulping |
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CN109914140A (en) * | 2017-12-12 | 2019-06-21 | 株洲千金药业股份有限公司 | A kind of face tissue and preparation method thereof |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4100016A (en) * | 1975-10-24 | 1978-07-11 | C P Associates Limited | Solvent pulping process |
CN1184183A (en) * | 1996-12-06 | 1998-06-10 | 阿尔塞尔技术公司 | Method of modified organosolv pulping |
-
1999
- 1999-07-19 CN CN99115819A patent/CN1105802C/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4100016A (en) * | 1975-10-24 | 1978-07-11 | C P Associates Limited | Solvent pulping process |
CN1184183A (en) * | 1996-12-06 | 1998-06-10 | 阿尔塞尔技术公司 | Method of modified organosolv pulping |
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CN1281074A (en) | 2001-01-24 |
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