FI905456A - Foerfarande foer blekning av cellulosamassa. - Google Patents

Foerfarande foer blekning av cellulosamassa. Download PDF

Info

Publication number
FI905456A
FI905456A FI905456A FI905456A FI905456A FI 905456 A FI905456 A FI 905456A FI 905456 A FI905456 A FI 905456A FI 905456 A FI905456 A FI 905456A FI 905456 A FI905456 A FI 905456A
Authority
FI
Finland
Prior art keywords
cellulosamassa
foerfarande foer
blekning
foer blekning
foerfarande
Prior art date
Application number
FI905456A
Other languages
English (en)
Other versions
FI905456A0 (fi
Inventor
Kari Rouvinen
Kimmo Ruohoniemi
Marja Vaheri
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
Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Priority to FI905456A priority Critical patent/FI905456A/fi
Publication of FI905456A0 publication Critical patent/FI905456A0/fi
Priority to PCT/FI1991/000323 priority patent/WO1992007998A1/en
Publication of FI905456A publication Critical patent/FI905456A/fi

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
    • D21C9/147—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)
FI905456A 1990-11-02 1990-11-02 Foerfarande foer blekning av cellulosamassa. FI905456A (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI905456A FI905456A (fi) 1990-11-02 1990-11-02 Foerfarande foer blekning av cellulosamassa.
PCT/FI1991/000323 WO1992007998A1 (en) 1990-11-02 1991-10-29 Method for bleaching pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI905456A FI905456A (fi) 1990-11-02 1990-11-02 Foerfarande foer blekning av cellulosamassa.

Publications (2)

Publication Number Publication Date
FI905456A0 FI905456A0 (fi) 1990-11-02
FI905456A true FI905456A (fi) 1992-05-03

Family

ID=8531367

Family Applications (1)

Application Number Title Priority Date Filing Date
FI905456A FI905456A (fi) 1990-11-02 1990-11-02 Foerfarande foer blekning av cellulosamassa.

Country Status (2)

Country Link
FI (1) FI905456A (fi)
WO (1) WO1992007998A1 (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2115881C (en) * 1993-02-25 2000-05-23 Michael G. Paice Non-chlorine bleaching of kraft pulp
DE4440246C2 (de) * 1994-11-11 1998-06-04 Thueringisches Inst Textil Verfahren zur Herstellung eines biologisch abbaubaren cellulosischen Faserverbundwerkstoffs
US7320741B2 (en) 2001-01-18 2008-01-22 Iogen Bio-Products Corporation Method of xylanase treatment in a chlorine dioxide bleaching sequence
WO2003048449A1 (en) * 2001-12-03 2003-06-12 Iogen Bio-Products Corporation Bleaching stage using xylanase with hydrogen peroxide, peracids, or a combination thereof
WO2003074780A1 (en) * 2002-03-06 2003-09-12 Iogen Bio-Products Corporation Xylanase treatment of chemical pulp
DE102004020355A1 (de) * 2004-04-26 2005-11-10 Call, Krimhild Oxidative, reduktive, hydrolytische und andere enzymatische Systeme zur Oxidation, Reduktion, zum Coaten, Koppeln und Crosslinken von natürlichen und künstlichen Faserstoffen, Kunststoffen oder anderen natürlichen und künstlichen Mono- bis Polymerstoffen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179021A (en) * 1989-02-10 1993-01-12 Gil Inc. (Now Ici Canada Inc.) Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment
ZA904441B (en) * 1989-06-22 1991-03-27 Int Paper Co Enzymatic delignification of lignocellulosic material

Also Published As

Publication number Publication date
WO1992007998A1 (en) 1992-05-14
FI905456A0 (fi) 1990-11-02

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Legal Events

Date Code Title Description
FD Application lapsed
FD Application lapsed

Owner name: ENZO-GUTZEIT OY