ATE175738T1 - Verfahren zum bleichen von zellstoff - Google Patents
Verfahren zum bleichen von zellstoffInfo
- Publication number
- ATE175738T1 ATE175738T1 AT94931025T AT94931025T ATE175738T1 AT E175738 T1 ATE175738 T1 AT E175738T1 AT 94931025 T AT94931025 T AT 94931025T AT 94931025 T AT94931025 T AT 94931025T AT E175738 T1 ATE175738 T1 AT E175738T1
- Authority
- AT
- Austria
- Prior art keywords
- pulp
- bleaching pulp
- decontamination
- involving
- subjected
- Prior art date
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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
-
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9301251A BE1007757A3 (fr) | 1993-11-10 | 1993-11-10 | Procede pour le blanchiment d'une pate a papier chimique. |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE175738T1 true ATE175738T1 (de) | 1999-01-15 |
Family
ID=3887547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT94931025T ATE175738T1 (de) | 1993-11-10 | 1994-10-28 | Verfahren zum bleichen von zellstoff |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP0728238B2 (es) |
JP (1) | JPH10500178A (es) |
AT (1) | ATE175738T1 (es) |
AU (1) | AU7993994A (es) |
BE (1) | BE1007757A3 (es) |
BR (1) | BR9408027A (es) |
CA (1) | CA2176246A1 (es) |
DE (1) | DE69416000D1 (es) |
ES (1) | ES2129142T5 (es) |
FI (1) | FI961975A (es) |
MA (1) | MA23369A1 (es) |
NO (1) | NO961889D0 (es) |
WO (1) | WO1995013420A1 (es) |
ZA (1) | ZA948563B (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4967451B2 (ja) | 2006-05-17 | 2012-07-04 | 三菱瓦斯化学株式会社 | 漂白パルプの製造方法 |
US8900408B2 (en) | 2007-12-20 | 2014-12-02 | Mitsubishi Gas Chemical Company, Inc. | Process for production of bleached pulp |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0402335B2 (en) * | 1989-06-06 | 2001-03-14 | Eka Chemicals AB | Process for bleaching lignocellulose-containing pulps |
SE468355B (sv) * | 1991-04-30 | 1992-12-21 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med komplexbildare och ozon |
SE470065C (sv) * | 1991-04-30 | 1996-01-15 | Eka Nobel Ab | Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning |
SE469842C (sv) * | 1992-01-21 | 1996-01-15 | Sunds Defibrator Ind Ab | Blekning av kemisk massa med peroxid |
SE469387B (sv) * | 1992-05-11 | 1993-06-28 | Kamyr Ab | Saett vid blekning av massa utan anvaendning av klorkemikalier |
BE1006056A3 (fr) * | 1992-07-06 | 1994-05-03 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
ES2091121T3 (es) * | 1992-11-27 | 1996-10-16 | Eka Chemicals Ab | Procedimiento para blanquear pasta que contiene lignocelulosa. |
BE1007700A3 (fr) * | 1993-11-04 | 1995-10-03 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
-
1993
- 1993-11-10 BE BE9301251A patent/BE1007757A3/fr not_active IP Right Cessation
-
1994
- 1994-10-28 AU AU79939/94A patent/AU7993994A/en not_active Abandoned
- 1994-10-28 AT AT94931025T patent/ATE175738T1/de not_active IP Right Cessation
- 1994-10-28 WO PCT/EP1994/003590 patent/WO1995013420A1/fr active IP Right Grant
- 1994-10-28 ES ES94931025T patent/ES2129142T5/es not_active Expired - Lifetime
- 1994-10-28 BR BR9408027A patent/BR9408027A/pt unknown
- 1994-10-28 EP EP94931025A patent/EP0728238B2/fr not_active Expired - Lifetime
- 1994-10-28 JP JP7513565A patent/JPH10500178A/ja active Pending
- 1994-10-28 DE DE69416000T patent/DE69416000D1/de not_active Expired - Lifetime
- 1994-10-28 CA CA002176246A patent/CA2176246A1/fr not_active Abandoned
- 1994-10-31 ZA ZA948563A patent/ZA948563B/xx unknown
- 1994-11-09 MA MA23693A patent/MA23369A1/fr unknown
-
1996
- 1996-05-09 NO NO961889A patent/NO961889D0/no not_active Application Discontinuation
- 1996-05-09 FI FI961975A patent/FI961975A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
MA23369A1 (fr) | 1995-07-01 |
EP0728238B2 (fr) | 2004-08-11 |
ES2129142T3 (es) | 1999-06-01 |
WO1995013420A1 (fr) | 1995-05-18 |
FI961975A0 (fi) | 1996-05-09 |
BE1007757A3 (fr) | 1995-10-17 |
ES2129142T5 (es) | 2005-04-01 |
NO961889L (no) | 1996-05-09 |
AU7993994A (en) | 1995-05-29 |
NO961889D0 (no) | 1996-05-09 |
JPH10500178A (ja) | 1998-01-06 |
DE69416000D1 (de) | 1999-02-25 |
FI961975A (fi) | 1996-07-09 |
BR9408027A (pt) | 1996-12-17 |
ZA948563B (en) | 1995-06-30 |
EP0728238A1 (fr) | 1996-08-28 |
EP0728238B1 (fr) | 1999-01-13 |
CA2176246A1 (fr) | 1995-05-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |