GB2005394A - Drying wood pulp - Google Patents
Drying wood pulpInfo
- Publication number
- GB2005394A GB2005394A GB7839409A GB7839409A GB2005394A GB 2005394 A GB2005394 A GB 2005394A GB 7839409 A GB7839409 A GB 7839409A GB 7839409 A GB7839409 A GB 7839409A GB 2005394 A GB2005394 A GB 2005394A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- wood pulp
- burner
- recycled
- pulp
- 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.)
- Granted
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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
- D21C9/185—De-watering; Elimination of cooking or pulp-treating liquors from the pulp comprising at least one step where the pulp is suspended in a gaseous medium, e.g. flash drying
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
Wood pulp is dried by contacting it with heated air and subjecting the air and pulp to turbulence in a dryer 2 comprising relatively contrarotating members 15, 16 which intermesh on rotation so that dried wood pulp fibres are suspended in the air issuing from the dryer via exit passage 24. The heated air is produced by heating air in a burner 1 to a temperature of from 300 DEG to 600 DEG C by burning a fuel, issuing from a jet 5, in the air. The dried wood pulp fibres are separated from the air in a cyclone separator 3 and a portion of the air thus separated is recycled via pipes 30 and 32 to the burner 1. The air admitted to the burner 1 comprises fresh air introduced through an inlet, and recycled air introduced through an inlet 6 from the pipe 32, the proportion of fresh air being such that the heated air contacting the pulp has an oxygen content of less than 10 per cent by volume. The use of recycled air reduces the risk of fire when drying the wood pulp. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7839409A GB2005394B (en) | 1977-10-06 | 1978-10-05 | Drying wood pulp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4159677 | 1977-10-06 | ||
GB7839409A GB2005394B (en) | 1977-10-06 | 1978-10-05 | Drying wood pulp |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2005394A true GB2005394A (en) | 1979-04-19 |
GB2005394B GB2005394B (en) | 1982-03-31 |
Family
ID=26264712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7839409A Expired GB2005394B (en) | 1977-10-06 | 1978-10-05 | Drying wood pulp |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2005394B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2122321A (en) * | 1982-06-24 | 1984-01-11 | Brown & Williamson Tobacco | Pneumatic conveying tobacco drying apparatus |
EP0595674A1 (en) * | 1992-10-19 | 1994-05-04 | Canadian Liquid Air Ltd Air Liquide Canada Ltee | Process for pH and fire control in pulp balers |
WO2017085633A1 (en) * | 2015-11-17 | 2017-05-26 | Stora Enso Oyj | Process for producing fiber-polymer composites |
-
1978
- 1978-10-05 GB GB7839409A patent/GB2005394B/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2122321A (en) * | 1982-06-24 | 1984-01-11 | Brown & Williamson Tobacco | Pneumatic conveying tobacco drying apparatus |
EP0595674A1 (en) * | 1992-10-19 | 1994-05-04 | Canadian Liquid Air Ltd Air Liquide Canada Ltee | Process for pH and fire control in pulp balers |
WO2017085633A1 (en) * | 2015-11-17 | 2017-05-26 | Stora Enso Oyj | Process for producing fiber-polymer composites |
US11331830B2 (en) | 2015-11-17 | 2022-05-17 | Stora Enso Oyj | Process for producing fiber-polymer composites |
Also Published As
Publication number | Publication date |
---|---|
GB2005394B (en) | 1982-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |