GB900880A - Improvements in and relating to the cold caustic pulping process - Google Patents
Improvements in and relating to the cold caustic pulping processInfo
- Publication number
- GB900880A GB900880A GB389260A GB389260A GB900880A GB 900880 A GB900880 A GB 900880A GB 389260 A GB389260 A GB 389260A GB 389260 A GB389260 A GB 389260A GB 900880 A GB900880 A GB 900880A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vessel
- air
- feb
- pump
- carbon dioxide
- 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
- Paper (AREA)
Abstract
900,880. Preparation of paper pulp. CHITTENDEN, A. E. Feb. 3, 1961 [Feb. 3, 1960], No. 3892/60. Class 96. A cold soaking vessel 1 is loaded with, e.g. tropical, deciduous wood chips and may be exhausted by a pump &c. 4 prior to the addition of, e.g. 9 to 13% caustic soda solution from a tank 7, whereupon the vessel 1 is pressurized, e.g. to 100 p.s.i. by the pump 4, e.g. using air drawn through a washer 8 to remove carbon dioxide. After 1 hour, the charge may be left to soak at atmospheric pressure, before discharging with the aid of air in a bottle 12, the chips being then easily refinable. Detergents may be included in the soda solution. Evacuation and soaking may be repeated several times. The top of the vessel 1 may be conical to reduce the area of liquid surface exposed to any carbon dioxide in the air.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB389260A GB900880A (en) | 1960-02-03 | 1960-02-03 | Improvements in and relating to the cold caustic pulping process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB389260A GB900880A (en) | 1960-02-03 | 1960-02-03 | Improvements in and relating to the cold caustic pulping process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB900880A true GB900880A (en) | 1962-07-11 |
Family
ID=9766842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB389260A Expired GB900880A (en) | 1960-02-03 | 1960-02-03 | Improvements in and relating to the cold caustic pulping process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB900880A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0100293A1 (en) * | 1982-07-28 | 1984-02-08 | Beloit Corporation | Improvement in batch processes for digesting wood chips |
GB2127053A (en) * | 1982-08-05 | 1984-04-04 | Honshu Paper Co Ltd | Paper for packaging metallic material |
EP0420791A2 (en) * | 1989-09-25 | 1991-04-03 | Beloit Corporation | Process and mechanism to empty pulping digester |
-
1960
- 1960-02-03 GB GB389260A patent/GB900880A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0100293A1 (en) * | 1982-07-28 | 1984-02-08 | Beloit Corporation | Improvement in batch processes for digesting wood chips |
GB2127053A (en) * | 1982-08-05 | 1984-04-04 | Honshu Paper Co Ltd | Paper for packaging metallic material |
EP0420791A2 (en) * | 1989-09-25 | 1991-04-03 | Beloit Corporation | Process and mechanism to empty pulping digester |
EP0420791A3 (en) * | 1989-09-25 | 1991-10-23 | Beloit Corporation | Process and mechanism to empty pulping digester |
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