FI922945A - Foerfarande foer blekning av massa - Google Patents
Foerfarande foer blekning av massa Download PDFInfo
- Publication number
- FI922945A FI922945A FI922945A FI922945A FI922945A FI 922945 A FI922945 A FI 922945A FI 922945 A FI922945 A FI 922945A FI 922945 A FI922945 A FI 922945A FI 922945 A FI922945 A FI 922945A
- Authority
- FI
- Finland
- Prior art keywords
- massa
- 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
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72178091A | 1991-06-28 | 1991-06-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
FI922945A0 FI922945A0 (fi) | 1992-06-25 |
FI922945A true FI922945A (fi) | 1992-12-29 |
Family
ID=24899279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI922945A FI922945A (fi) | 1991-06-28 | 1992-06-25 | Foerfarande foer blekning av massa |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0520140A1 (fi) |
AU (1) | AU1282692A (fi) |
BR (1) | BR9202472A (fi) |
FI (1) | FI922945A (fi) |
MX (1) | MX9203191A (fi) |
NO (1) | NO922526L (fi) |
ZA (1) | ZA921843B (fi) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5520783A (en) * | 1990-10-26 | 1996-05-28 | Union Camp Patent Holding, Inc. | Apparatus for bleaching high consistency pulp with ozone |
JP3121917B2 (ja) * | 1992-07-08 | 2001-01-09 | 住友重機械工業株式会社 | オゾンによるパルプ漂白方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA966604A (en) * | 1970-12-21 | 1975-04-29 | Scott Paper Company | Kraft pulp bleaching and recovery process |
CA1112813A (en) * | 1978-04-06 | 1981-11-24 | Arthur W. Kempf | Method for extracting ozone-treated fibrous materials |
CA1178756A (en) * | 1981-06-29 | 1984-12-04 | Shyam S. Bhattacharjee | Alkaline extraction initiated ozone bleaching of kraft pulp |
-
1992
- 1992-03-04 EP EP92103706A patent/EP0520140A1/en not_active Withdrawn
- 1992-03-12 ZA ZA921843A patent/ZA921843B/xx unknown
- 1992-03-12 AU AU12826/92A patent/AU1282692A/en not_active Abandoned
- 1992-06-24 MX MX9203191A patent/MX9203191A/es unknown
- 1992-06-25 FI FI922945A patent/FI922945A/fi unknown
- 1992-06-26 NO NO92922526A patent/NO922526L/no unknown
- 1992-07-07 BR BR929202472A patent/BR9202472A/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
MX9203191A (es) | 1992-12-01 |
AU1282692A (en) | 1993-01-07 |
ZA921843B (en) | 1992-12-30 |
EP0520140A1 (en) | 1992-12-30 |
BR9202472A (pt) | 1993-02-09 |
FI922945A0 (fi) | 1992-06-25 |
NO922526L (no) | 1992-12-29 |
NO922526D0 (no) | 1992-06-26 |
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