GB491842A - Improved manufacture of pure cellulose from cellulose-containing materials - Google Patents
Improved manufacture of pure cellulose from cellulose-containing materialsInfo
- Publication number
- GB491842A GB491842A GB550/37A GB55037A GB491842A GB 491842 A GB491842 A GB 491842A GB 550/37 A GB550/37 A GB 550/37A GB 55037 A GB55037 A GB 55037A GB 491842 A GB491842 A GB 491842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boiler
- steam
- kgms
- litres
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
Landscapes
- Processing Of Solid Wastes (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
In a process for production of cellulose by the decomposition of straw or similar grasses with soda lye in a rotary boiler, the fibrous material is saturated with the minimum of decomposing liquid only a small excess just sufficient to cover the bottom of the boiler being allowed, air is driven out by steam and the charge is steamed with dry steam without increasing its moisture content. 20 kgms. of chaff from corn straws were placed in a 200 litre tumbler boiler. 60 litres of water with 2 kgms. of NaOH and 100 grams of sulphite or hydrosulphite or weak waste lye of corresponding concentration are added. The boiler is closed and rotated for 1/4 hour. Dry superheated steam is then supplied. The boiler valves are then closed, the boiler rotated, the exhaust valve opened and fresh steam blown through for 5-10 minutes. This is repeated 2 or 3 times for complete removal of air. Steaming then takes place with dry superheated steam for 1 1/2 hours at about 5 atm. The temperature is 140-175 DEG C. The material is then blown out, washed, and again treated with a lye containing 100 grams of sulphite and 1 1/2 kgms. of NaOH to 10 litres of water, and again steamed for 1 1/2 hours. The steam is then blown out, 20 litres of fresh water added and the material washed free from alkali. In place of 2 stages, the material may be treated once for 2-2 1/2 hours with a lye containing 5 kgms. of NaOH to 60 litres of water. The yield amounts to 50-55 per cent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE491842X | 1936-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491842A true GB491842A (en) | 1938-09-07 |
Family
ID=6544322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB550/37A Expired GB491842A (en) | 1936-01-28 | 1937-01-07 | Improved manufacture of pure cellulose from cellulose-containing materials |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE419457A (en) |
| FR (1) | FR816205A (en) |
| GB (1) | GB491842A (en) |
| NL (1) | NL45690C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011071386A1 (en) | 2009-12-11 | 2011-06-16 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Novel method for processing lignocellulose containing material |
| CN107164988A (en) * | 2017-07-11 | 2017-09-15 | 横县东糖糖业有限公司纸业分公司 | It is a kind of to produce the method that slab is starched using without sulphur digesting technoloy |
-
0
- BE BE419457D patent/BE419457A/xx unknown
- NL NL45690D patent/NL45690C/xx active
-
1937
- 1937-01-07 GB GB550/37A patent/GB491842A/en not_active Expired
- 1937-01-09 FR FR816205D patent/FR816205A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011071386A1 (en) | 2009-12-11 | 2011-06-16 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Novel method for processing lignocellulose containing material |
| US9435077B2 (en) | 2009-12-11 | 2016-09-06 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Method for processing lignocellulose containing material |
| CN107164988A (en) * | 2017-07-11 | 2017-09-15 | 横县东糖糖业有限公司纸业分公司 | It is a kind of to produce the method that slab is starched using without sulphur digesting technoloy |
| CN107164988B (en) * | 2017-07-11 | 2019-02-05 | 横县东糖糖业有限公司纸业分公司 | A method of using no sulphur digesting technoloy production slab slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| BE419457A (en) | |
| NL45690C (en) | |
| FR816205A (en) | 1937-08-03 |
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