AT378016B - METHOD FOR REMOVING AND / OR BLEACHING CELLULOSE MATERIAL, IN PARTICULAR CELLULAR, AND DEVICE FOR CARRYING OUT THE METHOD - Google Patents
METHOD FOR REMOVING AND / OR BLEACHING CELLULOSE MATERIAL, IN PARTICULAR CELLULAR, AND DEVICE FOR CARRYING OUT THE METHODInfo
- Publication number
- AT378016B AT378016B AT437582A AT437582A AT378016B AT 378016 B AT378016 B AT 378016B AT 437582 A AT437582 A AT 437582A AT 437582 A AT437582 A AT 437582A AT 378016 B AT378016 B AT 378016B
- Authority
- AT
- Austria
- Prior art keywords
- carrying
- cellulose material
- particular cellular
- bleaching cellulose
- bleaching
- 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
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
- D21C11/0028—Effluents derived from the washing or bleaching plants
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT437582A AT378016B (en) | 1982-12-02 | 1982-12-02 | METHOD FOR REMOVING AND / OR BLEACHING CELLULOSE MATERIAL, IN PARTICULAR CELLULAR, AND DEVICE FOR CARRYING OUT THE METHOD |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT437582A AT378016B (en) | 1982-12-02 | 1982-12-02 | METHOD FOR REMOVING AND / OR BLEACHING CELLULOSE MATERIAL, IN PARTICULAR CELLULAR, AND DEVICE FOR CARRYING OUT THE METHOD |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA437582A ATA437582A (en) | 1984-10-15 |
AT378016B true AT378016B (en) | 1985-06-10 |
Family
ID=3563169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT437582A AT378016B (en) | 1982-12-02 | 1982-12-02 | METHOD FOR REMOVING AND / OR BLEACHING CELLULOSE MATERIAL, IN PARTICULAR CELLULAR, AND DEVICE FOR CARRYING OUT THE METHOD |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT378016B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4114134A1 (en) * | 1991-04-30 | 1992-11-05 | Sueddeutsche Kalkstickstoff | Chlorine-free bleaching and delignifying of alkali cellulose - by bleaching with aq. peracid, extracting with alkaline soln.,bleaching with aq. peracid and bleaching twice with cyanamide-activated hydrogen peroxide soln. |
DE4114135A1 (en) * | 1991-04-30 | 1992-11-05 | Sueddeutsche Kalkstickstoff | Chlorine-free bleaching and delignification of alkali cellulose - by first treating with aq. organic peracid soln. and then with cyanamide (salt) activated hydrogen peroxide soln. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2124325B2 (en) * | 1970-05-25 | 1979-09-27 | International Paper Co., New York, N.Y. (V.St.A.) | Process for bleaching chemical wood pulp |
US4222819A (en) * | 1978-02-17 | 1980-09-16 | Mo Och Domsjo Aktiebolag | Process for the acid bleaching of cellulose pulp with peroxides |
DE3005947B1 (en) * | 1980-02-16 | 1981-01-29 | Degussa | Process for bleaching pulp using organic peracid |
-
1982
- 1982-12-02 AT AT437582A patent/AT378016B/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2124325B2 (en) * | 1970-05-25 | 1979-09-27 | International Paper Co., New York, N.Y. (V.St.A.) | Process for bleaching chemical wood pulp |
US4222819A (en) * | 1978-02-17 | 1980-09-16 | Mo Och Domsjo Aktiebolag | Process for the acid bleaching of cellulose pulp with peroxides |
DE3005947B1 (en) * | 1980-02-16 | 1981-01-29 | Degussa | Process for bleaching pulp using organic peracid |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4114134A1 (en) * | 1991-04-30 | 1992-11-05 | Sueddeutsche Kalkstickstoff | Chlorine-free bleaching and delignifying of alkali cellulose - by bleaching with aq. peracid, extracting with alkaline soln.,bleaching with aq. peracid and bleaching twice with cyanamide-activated hydrogen peroxide soln. |
DE4114135A1 (en) * | 1991-04-30 | 1992-11-05 | Sueddeutsche Kalkstickstoff | Chlorine-free bleaching and delignification of alkali cellulose - by first treating with aq. organic peracid soln. and then with cyanamide (salt) activated hydrogen peroxide soln. |
Also Published As
Publication number | Publication date |
---|---|
ATA437582A (en) | 1984-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |