CA1339594C - Procedure for the bleaching of pulp involving enzyme treatment and the use in the oxidation stage of a chemical with at least 50% chlorine dioxide content - Google Patents

Procedure for the bleaching of pulp involving enzyme treatment and the use in the oxidation stage of a chemical with at least 50% chlorine dioxide content

Info

Publication number
CA1339594C
CA1339594C CA000611773A CA611773A CA1339594C CA 1339594 C CA1339594 C CA 1339594C CA 000611773 A CA000611773 A CA 000611773A CA 611773 A CA611773 A CA 611773A CA 1339594 C CA1339594 C CA 1339594C
Authority
CA
Canada
Prior art keywords
bleaching
pulp
chemical
oxidation stage
procedure
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 - Fee Related
Application number
CA000611773A
Other languages
English (en)
French (fr)
Inventor
Marja Vaheri
Veikko Jokela
Kari Miikki
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=8527891&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1339594(C) "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 CA1339594C publication Critical patent/CA1339594C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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)
  • Noodles (AREA)
  • Cereal-Derived Products (AREA)
  • Table Devices Or Equipment (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
CA000611773A 1989-02-14 1989-09-18 Procedure for the bleaching of pulp involving enzyme treatment and the use in the oxidation stage of a chemical with at least 50% chlorine dioxide content Expired - Fee Related CA1339594C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI890700A FI90888B (sv) 1989-02-14 1989-02-14 Förfarande för blekning av cellulosamassa
FI890700 1989-02-14

Publications (1)

Publication Number Publication Date
CA1339594C true CA1339594C (en) 1997-12-23

Family

ID=8527891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000611773A Expired - Fee Related CA1339594C (en) 1989-02-14 1989-09-18 Procedure for the bleaching of pulp involving enzyme treatment and the use in the oxidation stage of a chemical with at least 50% chlorine dioxide content

Country Status (8)

Country Link
EP (1) EP0383999B1 (sv)
JP (1) JPH02221482A (sv)
AT (1) ATE103351T1 (sv)
CA (1) CA1339594C (sv)
DE (1) DE68914135D1 (sv)
ES (1) ES2050747T3 (sv)
FI (1) FI90888B (sv)
NO (1) NO176406C (sv)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
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 (sv) * 1990-02-02 1993-11-25 Enso Gutzeit Oy Förfarande för 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 (sv) * 1991-05-07 2002-03-28 Iogen Corp Förfarande och anordning för användning av enzymer vid framställning och blekning av pappersmassa
CA2044100A1 (en) * 1991-06-07 1992-12-08 Janice Hamilton Biobleaching process
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
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
DE4422307A1 (de) * 1994-06-17 1995-12-21 Melitta Haushaltsprodukte Verfahren zum Delignifizieren und Bleichen von ungebleichten Zellstoffsuspensionen unter Verwendung von Stickstoffverbindungen
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
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
US7320741B2 (en) 2001-01-18 2008-01-22 Iogen Bio-Products Corporation Method of xylanase treatment in a chlorine dioxide bleaching sequence
CN100346030C (zh) 2002-03-06 2007-10-31 埃欧金生物制品公司 化学纸浆的木聚糖酶处理

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1086905A (en) * 1977-10-25 1980-10-07 W. Howard Rapson Bleach plant operation
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.

Also Published As

Publication number Publication date
JPH02221482A (ja) 1990-09-04
FI90888B (sv) 1993-12-31
ES2050747T3 (es) 1994-06-01
DE68914135D1 (de) 1994-04-28
EP0383999B1 (en) 1994-03-23
FI890700A0 (sv) 1989-02-14
NO893714D0 (no) 1989-09-18
NO893714L (no) 1990-08-15
FI890700A (sv) 1990-08-15
NO176406B (no) 1994-12-19
ATE103351T1 (de) 1994-04-15
NO176406C (no) 1995-03-29
EP0383999A3 (en) 1990-12-12
EP0383999A2 (en) 1990-08-29

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FI900549A0 (fi) Foerfarande foer blekning av cellulosamassa.
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Legal Events

Date Code Title Description
MKLA Lapsed