GB788341A - Improvements in or relating to apparatus for treating pulp with liquid - Google Patents
Improvements in or relating to apparatus for treating pulp with liquidInfo
- Publication number
- GB788341A GB788341A GB3497255A GB3497255A GB788341A GB 788341 A GB788341 A GB 788341A GB 3497255 A GB3497255 A GB 3497255A GB 3497255 A GB3497255 A GB 3497255A GB 788341 A GB788341 A GB 788341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulp
- bleaching
- zone
- chamber
- via line
- 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
- 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
- D21C9/10—Bleaching ; Apparatus therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
<PICT:0788341/IV (b)/1> <PICT:0788341/IV (b)/2> Apparatus for bleaching &c. pulp comprises a tower chamber 10a and a slurrying chamber 10b provided with agitating propellers 38, these chambers being separated by a bulged chamber 12 housing a solid circular baffle 14 of greater diameter than the bleaching zone 10a. Jets of water 16 fed from a pipe 32 and slice arms 18 attached to a revolving nozzle block 34 disposed above pylon 20, force the pulp around the baffle 14 and into the slurrying section 10b. In operation, wetted heated pulp enters tower 10 via opening 24, and the length of the bleaching period is varied by raising or lowering the stock level in the chamber 10. As the pulp progresses downwardly free bleaching liquid rises to the surface of the pulp. Slurry water is introduced to zone 10b via line 26 and bleached pulp is removed via line 28. A small portion of the slurry may be re-introduced via line 30. In modifications, the sections 10b and 12 may be of equal uniform diameter, or the zone 10b may be smaller in diameter than the bleaching zone 10a.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US329074A US2730888A (en) | 1952-12-31 | 1952-12-31 | Apparatus for treating pulp with liquid |
| GB3497255A GB788341A (en) | 1955-12-06 | 1955-12-06 | Improvements in or relating to apparatus for treating pulp with liquid |
| DEH26050A DE1023964B (en) | 1955-12-06 | 1956-01-21 | Apparatus for treating pulp with liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3497255A GB788341A (en) | 1955-12-06 | 1955-12-06 | Improvements in or relating to apparatus for treating pulp with liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB788341A true GB788341A (en) | 1957-12-23 |
Family
ID=10372279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3497255A Expired GB788341A (en) | 1952-12-31 | 1955-12-06 | Improvements in or relating to apparatus for treating pulp with liquid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB788341A (en) |
-
1955
- 1955-12-06 GB GB3497255A patent/GB788341A/en not_active Expired
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