FI901711A - Foerfarande foer blekning av cellulosamassa. - Google Patents
Foerfarande foer blekning av cellulosamassa. Download PDFInfo
- Publication number
- FI901711A FI901711A FI901711A FI901711A FI901711A FI 901711 A FI901711 A FI 901711A FI 901711 A FI901711 A FI 901711A FI 901711 A FI901711 A FI 901711A FI 901711 A FI901711 A FI 901711A
- Authority
- FI
- Finland
- Prior art keywords
- cellulosamassa
- foerfarande foer
- blekning
- foer blekning
- foerfarande
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI901711A FI88315C (fi) | 1990-04-04 | 1990-04-04 | Foerfarande foer blekning av cellulosamassa |
PCT/FI1991/000097 WO1991015627A1 (en) | 1990-04-04 | 1991-04-03 | A process for the bleaching of chemical pulp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI901711A FI88315C (fi) | 1990-04-04 | 1990-04-04 | Foerfarande foer blekning av cellulosamassa |
FI901711 | 1990-04-04 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI901711A0 FI901711A0 (fi) | 1990-04-04 |
FI901711A true FI901711A (fi) | 1991-10-05 |
FI88315B FI88315B (fi) | 1993-01-15 |
FI88315C FI88315C (fi) | 1993-04-26 |
Family
ID=8530209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI901711A FI88315C (fi) | 1990-04-04 | 1990-04-04 | Foerfarande foer blekning av cellulosamassa |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI88315C (fi) |
WO (1) | WO1991015627A1 (fi) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI81395B (fi) * | 1988-03-14 | 1990-06-29 | Cultor Oy | Foerfarande foer blekning av cellulosamassa. |
JPH02160997A (ja) * | 1988-12-13 | 1990-06-20 | Jujo Paper Co Ltd | ピッチトラブル防止法 |
-
1990
- 1990-04-04 FI FI901711A patent/FI88315C/fi not_active IP Right Cessation
-
1991
- 1991-04-03 WO PCT/FI1991/000097 patent/WO1991015627A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
FI901711A0 (fi) | 1990-04-04 |
FI88315C (fi) | 1993-04-26 |
FI88315B (fi) | 1993-01-15 |
WO1991015627A1 (en) | 1991-10-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
FG | Patent granted |
Owner name: ENSO GUTZEIT OY |
|
MA | Patent expired |