SE8904247D0 - Foerfarande foer blekning av kemisk cellulosamassa - Google Patents
Foerfarande foer blekning av kemisk cellulosamassaInfo
- Publication number
- SE8904247D0 SE8904247D0 SE8904247A SE8904247A SE8904247D0 SE 8904247 D0 SE8904247 D0 SE 8904247D0 SE 8904247 A SE8904247 A SE 8904247A SE 8904247 A SE8904247 A SE 8904247A SE 8904247 D0 SE8904247 D0 SE 8904247D0
- Authority
- SE
- Sweden
- Prior art keywords
- pulp
- bleaching
- ozone
- chlorine dioxide
- oxygen
- 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
- D21C9/147—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
- D21C9/12—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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8904247A SE465224B (sv) | 1989-12-18 | 1989-12-18 | Blekning av kemisk cellulosamassa med klordioxid och ozon |
CA002032315A CA2032315C (en) | 1989-12-18 | 1990-12-14 | Process for bleaching of chemical cellulose pulp |
FI906196A FI906196A (fi) | 1989-12-18 | 1990-12-14 | Foerfarande foer blekning av kemisk cellulosamassa. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8904247A SE465224B (sv) | 1989-12-18 | 1989-12-18 | Blekning av kemisk cellulosamassa med klordioxid och ozon |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8904247D0 true SE8904247D0 (sv) | 1989-12-18 |
SE8904247L SE8904247L (sv) | 1991-06-19 |
SE465224B SE465224B (sv) | 1991-08-12 |
Family
ID=20377792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8904247A SE465224B (sv) | 1989-12-18 | 1989-12-18 | Blekning av kemisk cellulosamassa med klordioxid och ozon |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA2032315C (sv) |
FI (1) | FI906196A (sv) |
SE (1) | SE465224B (sv) |
-
1989
- 1989-12-18 SE SE8904247A patent/SE465224B/sv not_active IP Right Cessation
-
1990
- 1990-12-14 FI FI906196A patent/FI906196A/fi not_active Application Discontinuation
- 1990-12-14 CA CA002032315A patent/CA2032315C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2032315C (en) | 1997-04-15 |
CA2032315A1 (en) | 1991-06-19 |
FI906196A0 (fi) | 1990-12-14 |
SE8904247L (sv) | 1991-06-19 |
SE465224B (sv) | 1991-08-12 |
FI906196A (fi) | 1991-06-19 |
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Legal Events
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