NO952913L - Forbedret fremgangsmåte og sammensetning for delignifisering av et lignocellulosemateriale - Google Patents
Forbedret fremgangsmåte og sammensetning for delignifisering av et lignocellulosematerialeInfo
- Publication number
- NO952913L NO952913L NO952913A NO952913A NO952913L NO 952913 L NO952913 L NO 952913L NO 952913 A NO952913 A NO 952913A NO 952913 A NO952913 A NO 952913A NO 952913 L NO952913 L NO 952913L
- Authority
- NO
- Norway
- Prior art keywords
- lignocellulosic material
- composition
- delignification
- improved method
- moles per
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
- C01B15/06—Peroxyhydrates; Peroxyacids or salts thereof containing sulfur
- C01B15/08—Peroxysulfates
-
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Det blir beskrevet fremgangsmåte for delignoflserlng av et lignocellulosemateriale omfattende eksponering av materialet ved pH 6,0 til 9,5 til en blanding av monopersvovelsyre og et keton med formel (I), hvor R1 og R2 uavhengig er valgt fra gruppen omfattende alkyl og aryl, eller R1 og R danner sammen en karbocyklus. Det blir også beskrevet en kraftmasse-dellgnifiserlngs- blanding omfattende en kombinasjon av: a) vann, b) fra omkring 0,05 til omkring 0,3 mol pr. liter av et keton som ovenfor: c) fra omkring 0,0008 til omkring 0,50 mol pr. Ilter av monopersvovelsyre; og d) tilstrekkelig buffer til å opprettholde pH mellom omkring pH 6 og pH 9,5.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1205793A | 1993-02-01 | 1993-02-01 | |
PCT/US1994/001085 WO1994018386A1 (en) | 1993-02-01 | 1994-01-31 | Improved process and composition for delignifying a lignocellulosic material |
Publications (2)
Publication Number | Publication Date |
---|---|
NO952913D0 NO952913D0 (no) | 1995-07-21 |
NO952913L true NO952913L (no) | 1995-07-21 |
Family
ID=21753173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO952913A NO952913L (no) | 1993-02-01 | 1995-07-21 | Forbedret fremgangsmåte og sammensetning for delignifisering av et lignocellulosemateriale |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0681625A4 (no) |
JP (1) | JPH08508791A (no) |
AU (1) | AU6130794A (no) |
BR (1) | BR9405754A (no) |
CA (1) | CA2154778A1 (no) |
FI (1) | FI953651A0 (no) |
NO (1) | NO952913L (no) |
NZ (1) | NZ262009A (no) |
WO (1) | WO1994018386A1 (no) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5770011A (en) * | 1995-11-17 | 1998-06-23 | International Paper Company | Neutral monoperoxysulfate bleaching process |
EP1012376A2 (de) * | 1997-06-20 | 2000-06-28 | Blume, Hildegard | Oxidations- und bleichsystem mit enzymatisch hergestellten oxidationsmitteln |
JP4967451B2 (ja) | 2006-05-17 | 2012-07-04 | 三菱瓦斯化学株式会社 | 漂白パルプの製造方法 |
CN101903591A (zh) | 2007-12-20 | 2010-12-01 | 三菱瓦斯化学株式会社 | 漂白纸浆的制造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1368400A (en) * | 1971-08-05 | 1974-09-25 | Procter & Gamble | Bleaching process and compositions therefor |
US4404061A (en) * | 1981-08-17 | 1983-09-13 | International Paper Company | Bleaching of lignocellulosic materials with monopersulfuric acid or its salts |
DE69202149T2 (de) * | 1991-02-12 | 1995-11-09 | Pulp Paper Res Inst | Bleichen von lignocellulosischen Materialien mit aktiviertem Sauerstoff. |
IT1251180B (it) * | 1991-08-28 | 1995-05-04 | Ausimont Spa | Processo per la degradazione della lignina con diossirani |
-
1994
- 1994-01-31 CA CA 2154778 patent/CA2154778A1/en not_active Abandoned
- 1994-01-31 EP EP94907926A patent/EP0681625A4/en not_active Withdrawn
- 1994-01-31 AU AU61307/94A patent/AU6130794A/en not_active Abandoned
- 1994-01-31 JP JP6518129A patent/JPH08508791A/ja active Pending
- 1994-01-31 WO PCT/US1994/001085 patent/WO1994018386A1/en not_active Application Discontinuation
- 1994-01-31 NZ NZ26200994A patent/NZ262009A/en unknown
- 1994-01-31 BR BR9405754A patent/BR9405754A/pt not_active Application Discontinuation
-
1995
- 1995-07-21 NO NO952913A patent/NO952913L/no unknown
- 1995-07-31 FI FI953651A patent/FI953651A0/fi unknown
Also Published As
Publication number | Publication date |
---|---|
BR9405754A (pt) | 1995-11-28 |
FI953651A (fi) | 1995-07-31 |
AU6130794A (en) | 1994-08-29 |
WO1994018386A1 (en) | 1994-08-18 |
EP0681625A1 (en) | 1995-11-15 |
JPH08508791A (ja) | 1996-09-17 |
FI953651A0 (fi) | 1995-07-31 |
NO952913D0 (no) | 1995-07-21 |
CA2154778A1 (en) | 1994-08-18 |
NZ262009A (en) | 1996-06-25 |
EP0681625A4 (en) | 1997-03-12 |
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