FI942341A0 - Menetelmä mekaanisen, kemimekaanisen ja/tai kiertoMenetelmä mekaanisen, kemimekaanisen ja/tai kiertokuitumassan valkaisemiseksi peroksidilla kuitumassan valkaisemiseksi peroksidilla - Google Patents
Menetelmä mekaanisen, kemimekaanisen ja/tai kiertoMenetelmä mekaanisen, kemimekaanisen ja/tai kiertokuitumassan valkaisemiseksi peroksidilla kuitumassan valkaisemiseksi peroksidillaInfo
- Publication number
- FI942341A0 FI942341A0 FI942341A FI942341A FI942341A0 FI 942341 A0 FI942341 A0 FI 942341A0 FI 942341 A FI942341 A FI 942341A FI 942341 A FI942341 A FI 942341A FI 942341 A0 FI942341 A0 FI 942341A0
- Authority
- FI
- Finland
- Prior art keywords
- mechanical
- peroxide
- bleaching
- recycled pulp
- chemical mechanical
- 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
- D21C9/1026—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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
-
- 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
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 |
---|---|---|---|
FI942341A FI942341A (fi) | 1994-05-20 | 1994-05-20 | Menetelmä mekaanisen, kemimekaanisen ja/tai kiertokuitumassan valkaisemiseksi peroksidilla |
DE1995109401 DE19509401A1 (de) | 1994-05-20 | 1995-03-15 | Verfahren für das Bleichen von chemischem, mechanischem, chemisch-mechanischem und/oder Sekundärfaser-Halbstoff mit Peroxid |
SE9501891A SE9501891L (sv) | 1994-05-20 | 1995-05-19 | Förfarande för blekning av kemisk, mekanisk, kemisk-mekanisk och/eller återvunnen massa med peroxid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI942341A FI942341A (fi) | 1994-05-20 | 1994-05-20 | Menetelmä mekaanisen, kemimekaanisen ja/tai kiertokuitumassan valkaisemiseksi peroksidilla |
Publications (2)
Publication Number | Publication Date |
---|---|
FI942341A0 true FI942341A0 (fi) | 1994-05-20 |
FI942341A FI942341A (fi) | 1995-11-21 |
Family
ID=8540740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI942341A FI942341A (fi) | 1994-05-20 | 1994-05-20 | Menetelmä mekaanisen, kemimekaanisen ja/tai kiertokuitumassan valkaisemiseksi peroksidilla |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE19509401A1 (fi) |
FI (1) | FI942341A (fi) |
SE (1) | SE9501891L (fi) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996023929A1 (en) * | 1995-01-31 | 1996-08-08 | A. Ahlstrom Corporation | Bleaching pulp with peroxide at superatmospheric pressure and in multiple stages |
DE19704054C2 (de) | 1997-02-04 | 2000-08-10 | Stockhausen Chem Fab Gmbh | Verfahren zur Herstellung von Faserstoffen mit verbesserten Eigenschaften |
US20080110584A1 (en) * | 2006-11-15 | 2008-05-15 | Caifang Yin | Bleaching process with at least one extraction stage |
-
1994
- 1994-05-20 FI FI942341A patent/FI942341A/fi unknown
-
1995
- 1995-03-15 DE DE1995109401 patent/DE19509401A1/de not_active Withdrawn
- 1995-05-19 SE SE9501891A patent/SE9501891L/ not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE19509401A1 (de) | 1995-11-23 |
SE9501891D0 (sv) | 1995-05-19 |
SE9501891L (sv) | 1995-11-21 |
FI942341A (fi) | 1995-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or assigment of application |
Owner name: AHLSTROM MACHINERY OY |