SE504340E - Process for delignification / bleaching of lignin-containing cellulose pulp - Google Patents
Process for delignification / bleaching of lignin-containing cellulose pulpInfo
- Publication number
- SE504340E SE504340E SE9501897A SE9501897A SE504340E SE 504340 E SE504340 E SE 504340E SE 9501897 A SE9501897 A SE 9501897A SE 9501897 A SE9501897 A SE 9501897A SE 504340 E SE504340 E SE 504340E
- Authority
- SE
- Sweden
- Prior art keywords
- delignification
- lignin
- bleaching
- cellulose pulp
- containing cellulose
- Prior art date
Links
- 238000004061 bleaching Methods 0.000 title 1
- 229920002678 cellulose Polymers 0.000 title 1
- 239000001913 cellulose Substances 0.000 title 1
- 229920005610 lignin Polymers 0.000 title 1
- 238000000034 method Methods 0.000 title 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
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
-
- 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)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9501897A SE504340E (en) | 1995-05-22 | 1995-05-22 | Process for delignification / bleaching of lignin-containing cellulose pulp |
AU57850/96A AU5785096A (en) | 1995-05-22 | 1996-05-13 | Bleaching of cellulose pulp in one and the same stage with a complexing agent, a molybdenum containing substance and an oxidative bleaching agent |
PCT/SE1996/000619 WO1996037654A1 (en) | 1995-05-22 | 1996-05-13 | Bleaching of cellulose pulp in one and the same stage with a complexing agent, a molybdenum containing substance and an oxidative bleaching agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9501897A SE504340E (en) | 1995-05-22 | 1995-05-22 | Process for delignification / bleaching of lignin-containing cellulose pulp |
Publications (4)
Publication Number | Publication Date |
---|---|
SE9501897D0 SE9501897D0 (en) | 1995-05-22 |
SE9501897L SE9501897L (en) | 1996-11-23 |
SE504340C2 SE504340C2 (en) | 1997-01-20 |
SE504340E true SE504340E (en) | 1999-08-09 |
Family
ID=20398397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9501897A SE504340E (en) | 1995-05-22 | 1995-05-22 | Process for delignification / bleaching of lignin-containing cellulose pulp |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU5785096A (en) |
SE (1) | SE504340E (en) |
WO (1) | WO1996037654A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CL2009000939A1 (en) | 2008-04-30 | 2010-10-01 | Evonik Degussa Gmbh | Process to recover molybdate or tungstate from an aqueous solution that comprises a) contacting the solution with a cationized and water-insoluble inorganic carrier material, b) separating the carrier material from molybdate or tungstate, c) contacting it with an aqueous solution with a pH between 6 to 14 and d) separate the saturated material. |
DE102010001001A1 (en) * | 2010-01-19 | 2011-07-21 | Evonik Degussa GmbH, 45128 | Process for delignification and bleaching of pulp |
FR2969668B1 (en) * | 2010-12-23 | 2013-01-04 | Arkema France | METHOD FOR DELIGNIFYING AND WHITENING PAPER PULP USING ACTIVE HYDROGEN PEROXIDE |
RU2016122102A (en) * | 2013-11-06 | 2017-12-11 | Эвоник Дегусса Гмбх | METHOD OF DELIGNIFICATION AND BULPTURE OF CELLULOSE |
RU2634586C1 (en) * | 2016-08-01 | 2017-10-31 | федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" | Method of bleaching hardwood sulphate cellulose |
FI128968B (en) | 2020-03-31 | 2021-04-15 | Chempolis Oy | Peroxide bleaching of cellulose pulp |
RU2759613C1 (en) * | 2021-03-22 | 2021-11-16 | федеральное государственное автономное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" | Method for bleaching bisulphite cellulose |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE420430B (en) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS |
US4661205A (en) * | 1981-08-28 | 1987-04-28 | Scott Paper Company | Method of bleaching lignocellulosic material with peroxide catalyzed with a salt of a metal |
FI942968A (en) * | 1994-06-20 | 1995-12-21 | Kemira Chemicals Oy | Process for delignifying a chemical pulp |
-
1995
- 1995-05-22 SE SE9501897A patent/SE504340E/en not_active IP Right Cessation
-
1996
- 1996-05-13 AU AU57850/96A patent/AU5785096A/en not_active Abandoned
- 1996-05-13 WO PCT/SE1996/000619 patent/WO1996037654A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
AU5785096A (en) | 1996-12-11 |
SE9501897D0 (en) | 1995-05-22 |
WO1996037654A1 (en) | 1996-11-28 |
SE9501897L (en) | 1996-11-23 |
SE504340C2 (en) | 1997-01-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI102301B1 (en) | Process for treating cellulose pulp | |
FI103418B (en) | Method and apparatus for the pre-treatment of fibrous material for the production of cellulose pulp | |
FI973649A (en) | Treatment of fiber materials used to produce cellulose pulp | |
FI964499A (en) | Process for the preparation of delignified and bleached chemical pulp | |
NO176061C (en) | Method of bleaching pulp of cellulose-containing fibrous material | |
SE504340E (en) | Process for delignification / bleaching of lignin-containing cellulose pulp | |
FI944348A (en) | Procedure for bleaching of pulp | |
AU3602295A (en) | Process for delignification and bleaching of chemical wood pulps | |
NO971407L (en) | Process for delignification and bleaching of chemical pulp | |
FI965216A0 (en) | Process for bleaching a high consistency lignocellulose pulp | |
FI991241A (en) | Bleaching of lignin and process for making paper | |
FI974284A0 (en) | Bleaching procedure for cellulose pulp | |
NO176060C (en) | Method of bleaching pulp of cellulosic fibrous material | |
FI964715A0 (en) | Method for bleaching cellulose pulp | |
NO953440D0 (en) | Procedure for Delignification of Chemical Pulp | |
ZA924021B (en) | Process for the bleaching and delignification of chemical paper pulps and application of this process to the bleaching and delignification of kraft pulps and of asam pulps | |
NO950954D0 (en) | Process of bleaching pulp | |
NO941279L (en) | Process for enzymatic treatment of lignocellulosic materials, especially cellulose pulp | |
NO951190D0 (en) | Improved bleaching of high consistency lignocellulosic pulp | |
NO954285D0 (en) | Process for multistage bleaching of wood pulp | |
FI970419A0 (en) | Process for preparing cellulose pulp | |
FI964863A (en) | Process for bleaching of pulp | |
FI103818B1 (en) | Pulp Bleaching Process | |
PL307618A1 (en) | Multiple-stage paper-making cellulose pulp bleaching method | |
PL307617A1 (en) | Multiple-stage paper-making cellulose pulp bleaching method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |