DE69602269D1 - Verfahren und vorrichtung zum zellstoffbleichen mit einem gasförmigen bleichmittel - Google Patents
Verfahren und vorrichtung zum zellstoffbleichen mit einem gasförmigen bleichmittelInfo
- Publication number
- DE69602269D1 DE69602269D1 DE69602269T DE69602269T DE69602269D1 DE 69602269 D1 DE69602269 D1 DE 69602269D1 DE 69602269 T DE69602269 T DE 69602269T DE 69602269 T DE69602269 T DE 69602269T DE 69602269 D1 DE69602269 D1 DE 69602269D1
- Authority
- DE
- Germany
- Prior art keywords
- pulp
- bleaching
- vessel
- reagent
- bleaching reagent
- 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 - Fee Related
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
-
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US144795P | 1995-07-26 | 1995-07-26 | |
PCT/US1996/012902 WO1997005327A1 (en) | 1995-07-26 | 1996-07-16 | Method and apparatus for bleaching pulp with a gaseous bleaching reagent |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69602269D1 true DE69602269D1 (de) | 1999-06-02 |
DE69602269T2 DE69602269T2 (de) | 1999-09-16 |
Family
ID=21696060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69602269T Expired - Fee Related DE69602269T2 (de) | 1995-07-26 | 1996-07-16 | Verfahren und vorrichtung zum zellstoffbleichen mit einem gasförmigen bleichmittel |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0840820B1 (de) |
JP (1) | JPH10510599A (de) |
AT (1) | ATE179469T1 (de) |
BR (1) | BR9609840A (de) |
CA (1) | CA2227690A1 (de) |
DE (1) | DE69602269T2 (de) |
WO (1) | WO1997005327A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0492040A1 (de) * | 1990-12-21 | 1992-07-01 | Kamyr, Inc. | Drehender Ozonreaktor für Zellstoff |
EP0492039A1 (de) * | 1990-12-27 | 1992-07-01 | Kamyr, Inc. | Pneumatischer Reaktor zum Ozonbleichen von Zellstoff |
CA2046717A1 (en) * | 1991-02-06 | 1992-08-07 | Beloit Technologies, Inc. | Method and apparatus for treating fibrous materials with a gaseous reagent |
FI922279A (fi) * | 1991-05-24 | 1992-11-25 | Union Camp Patent Holding | Tvaostegsreaktor foer blekning av massa |
CA2151813A1 (en) * | 1992-12-18 | 1994-07-07 | Oscar Luthi | Method and apparatus for regulating wood pulp bleaching |
-
1996
- 1996-07-16 CA CA002227690A patent/CA2227690A1/en not_active Abandoned
- 1996-07-16 JP JP9507918A patent/JPH10510599A/ja active Pending
- 1996-07-16 DE DE69602269T patent/DE69602269T2/de not_active Expired - Fee Related
- 1996-07-16 BR BR9609840A patent/BR9609840A/pt not_active Application Discontinuation
- 1996-07-16 WO PCT/US1996/012902 patent/WO1997005327A1/en active IP Right Grant
- 1996-07-16 EP EP96928093A patent/EP0840820B1/de not_active Expired - Lifetime
- 1996-07-16 AT AT96928093T patent/ATE179469T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0840820A1 (de) | 1998-05-13 |
EP0840820B1 (de) | 1999-04-28 |
ATE179469T1 (de) | 1999-05-15 |
BR9609840A (pt) | 1999-03-09 |
JPH10510599A (ja) | 1998-10-13 |
CA2227690A1 (en) | 1997-02-13 |
WO1997005327A1 (en) | 1997-02-13 |
DE69602269T2 (de) | 1999-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |