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DE69113444D1 - Verfahren zum bleichen von chemischem papierzellstoff. - Google Patents

Verfahren zum bleichen von chemischem papierzellstoff.

Info

Publication number
DE69113444D1
DE69113444D1 DE69113444T DE69113444T DE69113444D1 DE 69113444 D1 DE69113444 D1 DE 69113444D1 DE 69113444 T DE69113444 T DE 69113444T DE 69113444 T DE69113444 T DE 69113444T DE 69113444 D1 DE69113444 D1 DE 69113444D1
Authority
DE
Germany
Prior art keywords
enzyme
steps
pulp
bleaching
chemical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69113444T
Other languages
English (en)
Inventor
Marja Vaheri
Kimmo Ruohoniemi
Hannu Sonni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stora Enso Oyj
Original Assignee
Enso Gutzeit Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8529828&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69113444(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Application granted granted Critical
Publication of DE69113444D1 publication Critical patent/DE69113444D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • D21C9/1057—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
    • 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
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Paper (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Hard Magnetic Materials (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
DE69113444T 1990-02-02 1991-02-01 Verfahren zum bleichen von chemischem papierzellstoff. Expired - Lifetime DE69113444D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI900549A FI89814C (fi) 1990-02-02 1990-02-02 Foerfarande foer blekning av cellulosamassa
PCT/FI1991/000033 WO1991011553A1 (en) 1990-02-02 1991-02-01 A process for the bleaching of chemical pulp

Publications (1)

Publication Number Publication Date
DE69113444D1 true DE69113444D1 (de) 1995-11-02

Family

ID=8529828

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69113444T Expired - Lifetime DE69113444D1 (de) 1990-02-02 1991-02-01 Verfahren zum bleichen von chemischem papierzellstoff.

Country Status (8)

Country Link
EP (1) EP0513140B2 (de)
JP (1) JPH05509362A (de)
AT (1) ATE128498T1 (de)
CA (1) CA2075187A1 (de)
DE (1) DE69113444D1 (de)
ES (1) ES2079062T5 (de)
FI (1) FI89814C (de)
WO (1) WO1991011553A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI90670C (sv) * 1991-05-02 1994-03-10 Metsae Serla Oy Behandling av alkalibehandlad massa för användning i pappersframställning
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
EP0905306A1 (de) 1997-09-26 1999-03-31 Consortium für elektrochemische Industrie GmbH Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien sowie Verfahren zu seiner Anwendung
EP1109912A1 (de) 1998-09-04 2001-06-27 University Of Georgia Research Foundation, Inc. Phenolsäure esterasen, kodierende sequenzen und verfahren
US6602700B1 (en) 1998-09-04 2003-08-05 University Of Georgia Research Foundation, Inc. Phenolic acid esterases, coding sequences and methods
US7541175B1 (en) 2000-12-22 2009-06-02 Iogen Energy Corporation Alkaline extraction stages comprising xylanase
CA2435279A1 (en) 2001-01-18 2002-07-25 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
DK1516053T3 (da) 2002-06-14 2013-03-25 Verenium Corp Xylanaser, nucleinsyrer, som koder herfor, og fremgangsmåder til at fremstille og benytte disse
USRE45660E1 (en) 2006-02-14 2015-09-01 Bp Corporation North America Inc. Xylanases, nucleic acids encoding them and methods for making and using them

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI90888B (fi) * 1989-02-14 1993-12-31 Enso Gutzeit Oy Menetelmä selluloosamassan valkaisemiseksi
ZA904441B (en) * 1989-06-22 1991-03-27 Int Paper Co Enzymatic delignification of lignocellulosic material

Also Published As

Publication number Publication date
EP0513140B1 (de) 1995-09-27
WO1991011553A1 (en) 1991-08-08
FI900549A0 (fi) 1990-02-02
ATE128498T1 (de) 1995-10-15
ES2079062T5 (es) 1998-07-16
FI89814C (fi) 1993-11-25
FI89814B (fi) 1993-08-13
JPH05509362A (ja) 1993-12-22
FI900549A (fi) 1991-08-03
EP0513140B2 (de) 1998-03-18
CA2075187A1 (en) 1991-08-03
EP0513140A1 (de) 1992-11-19
ES2079062T3 (es) 1996-01-01

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Legal Events

Date Code Title Description
8332 No legal effect for de