NO176406C - Fremgangsmåte for bleking av masse - Google Patents
Fremgangsmåte for bleking av masseInfo
- Publication number
- NO176406C NO176406C NO893714A NO893714A NO176406C NO 176406 C NO176406 C NO 176406C NO 893714 A NO893714 A NO 893714A NO 893714 A NO893714 A NO 893714A NO 176406 C NO176406 C NO 176406C
- Authority
- NO
- Norway
- Prior art keywords
- pulp
- bleaching
- oxidation
- chemical
- chlorine
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
-
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Cereal-Derived Products (AREA)
- Table Devices Or Equipment (AREA)
- Noodles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI890700A FI90888B (fi) | 1989-02-14 | 1989-02-14 | Menetelmä selluloosamassan valkaisemiseksi |
Publications (4)
Publication Number | Publication Date |
---|---|
NO893714D0 NO893714D0 (no) | 1989-09-18 |
NO893714L NO893714L (no) | 1990-08-15 |
NO176406B NO176406B (no) | 1994-12-19 |
NO176406C true NO176406C (no) | 1995-03-29 |
Family
ID=8527891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO893714A NO176406C (no) | 1989-02-14 | 1989-09-18 | Fremgangsmåte for bleking av masse |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0383999B1 (fr) |
JP (1) | JPH02221482A (fr) |
AT (1) | ATE103351T1 (fr) |
CA (1) | CA1339594C (fr) |
DE (1) | DE68914135D1 (fr) |
ES (1) | ES2050747T3 (fr) |
FI (1) | FI90888B (fr) |
NO (1) | NO176406C (fr) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI86896B (fi) * | 1989-05-04 | 1992-07-15 | Enso Gutzeit Oy | Foerfarande foer blekning av cellulosamassa. |
SE465320B (sv) * | 1990-01-10 | 1991-08-26 | Korsnaes Ab | Preparat som uppvisar enzymatisk delignifieringsaktivitet, saett att framstaella detsamma och tillaempningar daerav |
FI89814C (fi) * | 1990-02-02 | 1993-11-25 | Enso Gutzeit Oy | Foerfarande foer blekning av cellulosamassa |
US5837515A (en) * | 1990-05-16 | 1998-11-17 | Alko-Yhtiot Oy | Enzyme preparations and methods for their production |
JP2859393B2 (ja) * | 1990-07-24 | 1999-02-17 | ノボ ノルディスク アクティーゼルスカブ | セルラーゼ及びその製造法 |
DK203490D0 (da) * | 1990-08-24 | 1990-08-24 | Novo Nordisk As | Fremgangsmaade til behandling af lignocellulosepulp og apparat til udfoerelse af processen |
DE4129739A1 (de) * | 1990-09-11 | 1992-03-12 | Sandoz Ag | Chlorfreies bleichen von papierpulpe |
FI108800B (fi) * | 1991-05-07 | 2002-03-28 | Iogen Corp | Menetelmä ja laitteisto entsyymin käyttämiseksi paperimassan valmistuksessa ja valkaisussa |
CA2044100A1 (fr) * | 1991-06-07 | 1992-12-08 | Janice Hamilton | Procede de bioblanchiment |
US5369024A (en) * | 1992-03-25 | 1994-11-29 | The United States Of America As Represented By The Secretary Of Agriculture | Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps |
US5498534A (en) * | 1992-03-25 | 1996-03-12 | The United States Of America As Represented By The Secretary Of Agriculture | Method of removing color from wood pulp using xylanase from streptomyces roseiscleroticus NRRL B-11019 |
DE4422307A1 (de) * | 1994-06-17 | 1995-12-21 | Melitta Haushaltsprodukte | Verfahren zum Delignifizieren und Bleichen von ungebleichten Zellstoffsuspensionen unter Verwendung von Stickstoffverbindungen |
US7816129B2 (en) | 1994-07-29 | 2010-10-19 | Ab Enzymes Gmbh | Production and secretion of proteins of bacterial origin in filamentous fungi |
US5871730A (en) * | 1994-07-29 | 1999-02-16 | Universite De Sherbrooke | Thermostable xylanase DNA, protein and methods of use |
US6300114B1 (en) | 1994-07-29 | 2001-10-09 | Rohm Enzyme Finland Oy | Sequences of xylanase and xylanase expression vectors |
US5935836A (en) * | 1994-07-29 | 1999-08-10 | Rohm Enzyme Finland Oy | Actinomadura xylanase sequences and methods of use |
AU2002229430A1 (en) | 2001-01-18 | 2002-07-30 | Iogen Bio-Products Corporation | Use of xylanase in pulp bleaching |
US7368036B2 (en) | 2002-03-06 | 2008-05-06 | Iogen Bio-Products Corporation | Xylanase treatment of chemical pulp |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1086905A (fr) * | 1977-10-25 | 1980-10-07 | W. Howard Rapson | Fonctionnement d'une installation de blanchiment |
JPS5468402A (en) * | 1977-11-09 | 1979-06-01 | Kogyo Gijutsuin | Property modification of biochemical pulp |
FI81395B (fi) * | 1988-03-14 | 1990-06-29 | Cultor Oy | Foerfarande foer blekning av cellulosamassa. |
-
1989
- 1989-02-14 FI FI890700A patent/FI90888B/fi not_active Application Discontinuation
- 1989-09-18 JP JP1241667A patent/JPH02221482A/ja active Pending
- 1989-09-18 CA CA000611773A patent/CA1339594C/fr not_active Expired - Fee Related
- 1989-09-18 NO NO893714A patent/NO176406C/no not_active IP Right Cessation
- 1989-09-18 DE DE89117235T patent/DE68914135D1/de not_active Expired - Lifetime
- 1989-09-18 ES ES89117235T patent/ES2050747T3/es not_active Expired - Lifetime
- 1989-09-18 EP EP89117235A patent/EP0383999B1/fr not_active Revoked
- 1989-09-18 AT AT89117235T patent/ATE103351T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0383999A3 (en) | 1990-12-12 |
EP0383999B1 (fr) | 1994-03-23 |
FI890700A (fi) | 1990-08-15 |
NO893714D0 (no) | 1989-09-18 |
ES2050747T3 (es) | 1994-06-01 |
NO176406B (no) | 1994-12-19 |
JPH02221482A (ja) | 1990-09-04 |
ATE103351T1 (de) | 1994-04-15 |
FI890700A0 (fi) | 1989-02-14 |
FI90888B (fi) | 1993-12-31 |
NO893714L (no) | 1990-08-15 |
EP0383999A2 (fr) | 1990-08-29 |
DE68914135D1 (de) | 1994-04-28 |
CA1339594C (fr) | 1997-12-23 |
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NO176406C (no) | Fremgangsmåte for bleking av masse | |
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DE69113444D1 (de) | Verfahren zum bleichen von chemischem papierzellstoff. | |
NO902206L (no) | Fremgangsmaate ved delignifisering av lignocellulosefibre. | |
DE3563548D1 (en) | Process for preparing chemical wood pulps with a view to bleaching |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK1K | Patent expired |