ZA938748B - Process for delignification of lignocellulose-containing pulp - Google Patents
Process for delignification of lignocellulose-containing pulpInfo
- Publication number
- ZA938748B ZA938748B ZA938748A ZA938748A ZA938748B ZA 938748 B ZA938748 B ZA 938748B ZA 938748 A ZA938748 A ZA 938748A ZA 938748 A ZA938748 A ZA 938748A ZA 938748 B ZA938748 B ZA 938748B
- Authority
- ZA
- South Africa
- Prior art keywords
- delignification
- lignocellulose
- containing pulp
- pulp
- 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
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
-
- 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
- D21C9/147—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
- D21C9/16—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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9203585A SE500605C2 (sv) | 1992-11-27 | 1992-11-27 | Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedel |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA938748B true ZA938748B (en) | 1994-06-30 |
Family
ID=20387965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA938748A ZA938748B (en) | 1992-11-27 | 1993-11-23 | Process for delignification of lignocellulose-containing pulp |
Country Status (3)
Country | Link |
---|---|
RU (1) | RU2097462C1 (sv) |
SE (1) | SE500605C2 (sv) |
ZA (1) | ZA938748B (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI127996B (sv) | 2016-07-01 | 2019-07-15 | Kemira Oyj | Process för behandling av cellulosa |
-
1992
- 1992-11-27 SE SE9203585A patent/SE500605C2/sv not_active IP Right Cessation
-
1993
- 1993-11-23 ZA ZA938748A patent/ZA938748B/xx unknown
- 1993-11-25 RU RU9595114367A patent/RU2097462C1/ru active
Also Published As
Publication number | Publication date |
---|---|
SE500605C2 (sv) | 1994-07-25 |
SE9203585L (sv) | 1994-05-28 |
SE9203585D0 (sv) | 1992-11-27 |
RU95114367A (ru) | 1996-12-27 |
RU2097462C1 (ru) | 1997-11-27 |
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