DE69204457D1 - Verfahren zum bleichen und zur delignifizierung von chemischen papierzellstoffen. - Google Patents
Verfahren zum bleichen und zur delignifizierung von chemischen papierzellstoffen.Info
- Publication number
- DE69204457D1 DE69204457D1 DE69204457T DE69204457T DE69204457D1 DE 69204457 D1 DE69204457 D1 DE 69204457D1 DE 69204457 T DE69204457 T DE 69204457T DE 69204457 T DE69204457 T DE 69204457T DE 69204457 D1 DE69204457 D1 DE 69204457D1
- Authority
- DE
- Germany
- Prior art keywords
- bleaching
- paper fibers
- chemical paper
- delignifying chemical
- delignifying
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
-
- 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
-
- 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
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9100549A BE1004974A3 (fr) | 1991-06-06 | 1991-06-06 | Procede pour le blanchiment et la delignification de pates a papier chimiques et application de ce procede au blanchiment et a la delignification des pates kraft et des pates asam. |
PCT/EP1992/001222 WO1992021814A1 (fr) | 1991-06-06 | 1992-06-01 | Procede pour blanchiment et la delignification de pates a papier chimiques |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69204457D1 true DE69204457D1 (de) | 1995-10-05 |
DE69204457T2 DE69204457T2 (de) | 1996-04-18 |
Family
ID=3885547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69204457T Expired - Fee Related DE69204457T2 (de) | 1991-06-06 | 1992-06-01 | Verfahren zum bleichen und zur delignifizierung von chemischen papierzellstoffen. |
Country Status (16)
Country | Link |
---|---|
EP (1) | EP0587822B1 (de) |
JP (1) | JPH06507683A (de) |
AR (1) | AR247257A1 (de) |
AT (1) | ATE127179T1 (de) |
AU (1) | AU651462B2 (de) |
BE (1) | BE1004974A3 (de) |
BR (1) | BR9206112A (de) |
CA (1) | CA2110698A1 (de) |
DE (1) | DE69204457T2 (de) |
ES (1) | ES2079209T3 (de) |
FI (1) | FI935422A (de) |
NO (1) | NO302129B1 (de) |
NZ (1) | NZ242996A (de) |
WO (1) | WO1992021814A1 (de) |
YU (1) | YU48264B (de) |
ZA (1) | ZA924021B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1006881A3 (fr) * | 1993-03-02 | 1995-01-17 | Solvay Interox | Procede pour la delignification d'une pate a papier chimique. |
SE506480C2 (sv) * | 1995-06-29 | 1997-12-22 | Sca Graphic Res Ab | Blekning av lignocellulosahaltigt fibermaterial med ozon och persyra i ett kombinationssteg |
US5770011A (en) * | 1995-11-17 | 1998-06-23 | International Paper Company | Neutral monoperoxysulfate bleaching process |
FI964715A (fi) * | 1996-11-26 | 1998-05-27 | Keskuslaboratorio | Menetelmä selluloosamassan valkaisemiseksi |
EP0931874A1 (de) * | 1998-01-22 | 1999-07-28 | Degussa-Hüls Aktiengesellschaft | Verfahren zum Bleichen von Pulpe umfassend eine Endstufe in welcher die Pulpe mit einem Salz von Peroxymonoschwefelsäure behandelt wird |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372812A (en) * | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
US5091054A (en) * | 1989-08-18 | 1992-02-25 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic |
-
1991
- 1991-06-06 BE BE9100549A patent/BE1004974A3/fr not_active IP Right Cessation
-
1992
- 1992-06-01 BR BR9206112A patent/BR9206112A/pt not_active Application Discontinuation
- 1992-06-01 AU AU18775/92A patent/AU651462B2/en not_active Ceased
- 1992-06-01 EP EP92924472A patent/EP0587822B1/de not_active Expired - Lifetime
- 1992-06-01 ES ES92924472T patent/ES2079209T3/es not_active Expired - Fee Related
- 1992-06-01 DE DE69204457T patent/DE69204457T2/de not_active Expired - Fee Related
- 1992-06-01 WO PCT/EP1992/001222 patent/WO1992021814A1/fr active IP Right Grant
- 1992-06-01 CA CA002110698A patent/CA2110698A1/fr not_active Abandoned
- 1992-06-01 JP JP4510141A patent/JPH06507683A/ja active Pending
- 1992-06-01 AT AT92924472T patent/ATE127179T1/de not_active IP Right Cessation
- 1992-06-02 AR AR92322455A patent/AR247257A1/es active
- 1992-06-02 ZA ZA924021A patent/ZA924021B/xx unknown
- 1992-06-03 NZ NZ242996A patent/NZ242996A/xx unknown
- 1992-06-05 YU YU58792A patent/YU48264B/sh unknown
-
1993
- 1993-12-03 NO NO934406A patent/NO302129B1/no unknown
- 1993-12-03 FI FI935422A patent/FI935422A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
JPH06507683A (ja) | 1994-09-01 |
AU1877592A (en) | 1993-01-08 |
AU651462B2 (en) | 1994-07-21 |
ATE127179T1 (de) | 1995-09-15 |
AR247257A1 (es) | 1994-11-30 |
FI935422A0 (fi) | 1993-12-03 |
BE1004974A3 (fr) | 1993-03-09 |
DE69204457T2 (de) | 1996-04-18 |
NO934406D0 (no) | 1993-12-03 |
ZA924021B (en) | 1993-02-24 |
BR9206112A (pt) | 1995-10-10 |
NZ242996A (en) | 1995-01-27 |
WO1992021814A1 (fr) | 1992-12-10 |
ES2079209T3 (es) | 1996-01-01 |
FI935422A (fi) | 1994-01-11 |
CA2110698A1 (fr) | 1992-12-10 |
YU48264B (sh) | 1997-09-30 |
NO302129B1 (no) | 1998-01-26 |
EP0587822A1 (de) | 1994-03-23 |
YU58792A (sh) | 1994-09-09 |
EP0587822B1 (de) | 1995-08-30 |
NO934406L (no) | 1994-01-26 |
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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 |