SE8604852D0 - Delignification and bleaching of a cellulose pulp with an alkali-oxygen-hypochlorite extraction - Google Patents
Delignification and bleaching of a cellulose pulp with an alkali-oxygen-hypochlorite extractionInfo
- Publication number
- SE8604852D0 SE8604852D0 SE8604852A SE8604852A SE8604852D0 SE 8604852 D0 SE8604852 D0 SE 8604852D0 SE 8604852 A SE8604852 A SE 8604852A SE 8604852 A SE8604852 A SE 8604852A SE 8604852 D0 SE8604852 D0 SE 8604852D0
- Authority
- SE
- Sweden
- Prior art keywords
- bleaching
- oxygen
- pulp
- hypochlorite
- delignification
- Prior art date
Links
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 title abstract 6
- 238000004061 bleaching Methods 0.000 title abstract 4
- 238000000605 extraction Methods 0.000 title abstract 3
- 229910052760 oxygen Inorganic materials 0.000 title abstract 3
- 239000001301 oxygen Substances 0.000 title abstract 3
- 229920002678 cellulose Polymers 0.000 title abstract 2
- 239000001913 cellulose Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 abstract 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 238000005406 washing Methods 0.000 abstract 2
- 238000007792 addition Methods 0.000 abstract 1
- 239000003518 caustics Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
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
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 |
---|---|---|---|
US06/737,463 US4657633A (en) | 1985-05-24 | 1985-05-24 | Delignification and bleaching of a cellulose pulp with an alkalioxygen-hypochlorite single stage sequential extraction |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8604852D0 true SE8604852D0 (sv) | 1986-11-13 |
SE8604852L SE8604852L (sv) | 1988-05-14 |
SE460423B SE460423B (sv) | 1989-10-09 |
Family
ID=24964029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8604852A SE460423B (sv) | 1985-05-24 | 1986-11-13 | Blekning och delignifiering av cellulosamassa med en alkali-syre-hypokloritextraktion |
Country Status (2)
Country | Link |
---|---|
US (1) | US4657633A (sv) |
SE (1) | SE460423B (sv) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0303962A3 (en) * | 1987-08-17 | 1991-06-26 | Air Products And Chemicals, Inc. | Oxygen alkali extraction process for producing bleached pulp |
SE466062B (sv) * | 1990-04-30 | 1991-12-09 | Sunds Defibrator Ind Ab | Blekning av kemisk massa |
US6174409B1 (en) | 1997-09-19 | 2001-01-16 | American Air Liquide Inc. | Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process |
US8268122B2 (en) * | 2005-12-02 | 2012-09-18 | Akzo Nobel N.V. | Process of producing high-yield pulp |
CA2821954C (en) | 2010-12-22 | 2019-02-26 | Akzo Nobel Chemicals International B.V. | Process for improving chlorine dioxide bleaching of pulp |
JP6438077B1 (ja) * | 2017-06-28 | 2018-12-12 | ユニ・チャーム株式会社 | 糖化用パルプ繊維を製造する方法、及び糖化用パルプ繊維水溶液 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5346844B2 (sv) * | 1972-04-15 | 1978-12-16 | ||
US4081317A (en) * | 1973-12-18 | 1978-03-28 | Hooker Chemicals & Plastics Corporation | Process for the reduction of effluent color from a cellulosic pulp bleaching sequence |
FR2255418B1 (sv) * | 1973-12-21 | 1976-05-07 | Europeen Cellulose | |
FR2534680A1 (fr) * | 1982-10-14 | 1984-04-20 | Europ Propulsion | Systeme de mise a feu d'une charge propulsive par transmission pyrotechnique |
-
1985
- 1985-05-24 US US06/737,463 patent/US4657633A/en not_active Expired - Lifetime
-
1986
- 1986-11-13 SE SE8604852A patent/SE460423B/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE8604852L (sv) | 1988-05-14 |
US4657633A (en) | 1987-04-14 |
SE460423B (sv) | 1989-10-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
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