SE0003391D0 - Bleaching process and systems therefore - Google Patents
Bleaching process and systems thereforeInfo
- Publication number
- SE0003391D0 SE0003391D0 SE0003391A SE0003391A SE0003391D0 SE 0003391 D0 SE0003391 D0 SE 0003391D0 SE 0003391 A SE0003391 A SE 0003391A SE 0003391 A SE0003391 A SE 0003391A SE 0003391 D0 SE0003391 D0 SE 0003391D0
- Authority
- SE
- Sweden
- Prior art keywords
- ozone
- oxygen
- bleaching
- pulp
- systems
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The present invention relates to a method and a system for bleaching of pulp with ozone wherein oxygen is recycled and concentrated. The system comprises an ozone generator (2) for the providing of ozone-containing oxygen; a reactor (3) for bleaching of the pulp; an ozone destruction unit (5) for the destruction of ozone; and an oxygen concentration unit (5) for concentrating oxygen-rich gas, which concentration unit makes use of vacuum- and/or pressure swing adsorption technology and/or membrane technology.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0003391A SE0003391L (en) | 2000-09-22 | 2000-09-22 | Bleaching process and systems therefore |
PCT/SE2001/002002 WO2002025008A1 (en) | 2000-09-22 | 2001-09-19 | Process and system for bleaching pulp with ozone wherein oxygen-rich gas is recycled |
AU2001290420A AU2001290420A1 (en) | 2000-09-22 | 2001-09-19 | Process and system for bleaching pulp with ozone wherein oxygen-rich gas is recycled |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0003391A SE0003391L (en) | 2000-09-22 | 2000-09-22 | Bleaching process and systems therefore |
Publications (2)
Publication Number | Publication Date |
---|---|
SE0003391D0 true SE0003391D0 (en) | 2000-09-22 |
SE0003391L SE0003391L (en) | 2002-03-23 |
Family
ID=20281121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0003391A SE0003391L (en) | 2000-09-22 | 2000-09-22 | Bleaching process and systems therefore |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001290420A1 (en) |
SE (1) | SE0003391L (en) |
WO (1) | WO2002025008A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE1150015A1 (en) * | 2011-01-12 | 2012-07-13 | Wallenius Water Ab | Ozone bleaching of pulp |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3632937A1 (en) * | 1986-09-27 | 1988-03-31 | Bbc Brown Boveri & Cie | METHOD FOR PRODUCING OZONE |
FI883026A (en) * | 1987-06-25 | 1988-12-26 | Voest Alpine Ind Anlagen | FOERFARANDE FOER FRAMSTAELLNING AV RENT SYRE FOER DAEREFTER FOELJANDE FRAMSTAELLNING AV OZON. |
AT392256B (en) * | 1989-06-26 | 1991-02-25 | Voest Alpine Ind Anlagen | METHOD FOR PRODUCING OXYGEN AND / OR OZONE |
WO1993018226A1 (en) * | 1992-03-02 | 1993-09-16 | Kamyr, Inc. | Combined ozone destruction and fiber scrubbing in paper pulp mills |
CA2078276C (en) * | 1992-09-15 | 2004-05-25 | Derek Hornsey | Recovery of oxygen-rich gas from ozone bleaching processes |
-
2000
- 2000-09-22 SE SE0003391A patent/SE0003391L/en not_active Application Discontinuation
-
2001
- 2001-09-19 WO PCT/SE2001/002002 patent/WO2002025008A1/en active Application Filing
- 2001-09-19 AU AU2001290420A patent/AU2001290420A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2002025008A1 (en) | 2002-03-28 |
AU2001290420A1 (en) | 2002-04-02 |
SE0003391L (en) | 2002-03-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |