BR9407976A - Processo para o branqueamento de uma pasta de papel química - Google Patents
Processo para o branqueamento de uma pasta de papel químicaInfo
- Publication number
- BR9407976A BR9407976A BR9407976A BR9407976A BR9407976A BR 9407976 A BR9407976 A BR 9407976A BR 9407976 A BR9407976 A BR 9407976A BR 9407976 A BR9407976 A BR 9407976A BR 9407976 A BR9407976 A BR 9407976A
- Authority
- BR
- Brazil
- Prior art keywords
- bleaching
- chemical pulp
- pulp
- processing step
- processing
- 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
- D21C9/1057—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
- D21C9/1026—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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
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)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9301215A BE1007700A3 (fr) | 1993-11-04 | 1993-11-04 | Procede pour le blanchiment d'une pate a papier chimique. |
PCT/EP1994/003591 WO1995012709A1 (fr) | 1993-11-04 | 1994-10-28 | Procede pour le blanchiment d'une pate a papier chimique |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9407976A true BR9407976A (pt) | 1996-12-03 |
Family
ID=3887524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9407976A BR9407976A (pt) | 1993-11-04 | 1994-10-28 | Processo para o branqueamento de uma pasta de papel química |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP0726979B1 (xx) |
JP (1) | JPH09507096A (xx) |
AT (1) | ATE166118T1 (xx) |
AU (1) | AU7994094A (xx) |
BE (1) | BE1007700A3 (xx) |
BR (1) | BR9407976A (xx) |
CA (1) | CA2175817A1 (xx) |
DE (1) | DE69410286T2 (xx) |
ES (1) | ES2119234T3 (xx) |
FI (1) | FI961895A (xx) |
MA (1) | MA23365A1 (xx) |
NO (1) | NO961817D0 (xx) |
NZ (1) | NZ274852A (xx) |
WO (1) | WO1995012709A1 (xx) |
ZA (1) | ZA948562B (xx) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1007757A3 (fr) * | 1993-11-10 | 1995-10-17 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
FI105701B (fi) * | 1995-10-20 | 2000-09-29 | Ahlstrom Machinery Oy | Menetelmä ja laitteisto massan käsittelemiseksi |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2582692B1 (fr) * | 1985-05-29 | 1987-12-11 | Atochem | Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment |
ATE97179T1 (de) * | 1989-06-06 | 1993-11-15 | Eka Nobel Ab | Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen. |
FR2655668B1 (fr) * | 1989-12-11 | 1995-06-09 | Du Pin Cellulose | Procede de blanchiment de pates cellulosiques chimiques. |
-
1993
- 1993-11-04 BE BE9301215A patent/BE1007700A3/fr not_active IP Right Cessation
-
1994
- 1994-10-28 AU AU79940/94A patent/AU7994094A/en not_active Abandoned
- 1994-10-28 NZ NZ274852A patent/NZ274852A/en unknown
- 1994-10-28 JP JP7513015A patent/JPH09507096A/ja active Pending
- 1994-10-28 ES ES94931026T patent/ES2119234T3/es not_active Expired - Lifetime
- 1994-10-28 CA CA002175817A patent/CA2175817A1/fr not_active Abandoned
- 1994-10-28 BR BR9407976A patent/BR9407976A/pt not_active Application Discontinuation
- 1994-10-28 DE DE69410286T patent/DE69410286T2/de not_active Revoked
- 1994-10-28 WO PCT/EP1994/003591 patent/WO1995012709A1/fr not_active Application Discontinuation
- 1994-10-28 AT AT94931026T patent/ATE166118T1/de not_active IP Right Cessation
- 1994-10-28 EP EP94931026A patent/EP0726979B1/fr not_active Revoked
- 1994-10-31 ZA ZA948562A patent/ZA948562B/xx unknown
- 1994-11-04 MA MA23689A patent/MA23365A1/fr unknown
-
1996
- 1996-05-03 NO NO961817A patent/NO961817D0/no unknown
- 1996-05-03 FI FI961895A patent/FI961895A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
EP0726979B1 (fr) | 1998-05-13 |
AU7994094A (en) | 1995-05-23 |
WO1995012709A1 (fr) | 1995-05-11 |
EP0726979A1 (fr) | 1996-08-21 |
DE69410286D1 (de) | 1998-06-18 |
DE69410286T2 (de) | 1998-12-10 |
JPH09507096A (ja) | 1997-07-15 |
NO961817L (no) | 1996-05-03 |
ZA948562B (en) | 1995-06-30 |
CA2175817A1 (fr) | 1995-05-11 |
NZ274852A (en) | 1997-04-24 |
BE1007700A3 (fr) | 1995-10-03 |
MA23365A1 (fr) | 1995-07-01 |
ATE166118T1 (de) | 1998-05-15 |
FI961895A0 (fi) | 1996-05-03 |
FI961895A (fi) | 1996-05-03 |
ES2119234T3 (es) | 1998-10-01 |
NO961817D0 (no) | 1996-05-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
FA8 | Dismissal: dismissal - article 36, par. 1 of industrial property law |