SE9604511L - Förfarande för blekning av kraftmassa - Google Patents

Förfarande för blekning av kraftmassa

Info

Publication number
SE9604511L
SE9604511L SE9604511A SE9604511A SE9604511L SE 9604511 L SE9604511 L SE 9604511L SE 9604511 A SE9604511 A SE 9604511A SE 9604511 A SE9604511 A SE 9604511A SE 9604511 L SE9604511 L SE 9604511L
Authority
SE
Sweden
Prior art keywords
bleaching
pulp
peroxide
acid
procedure
Prior art date
Application number
SE9604511A
Other languages
English (en)
Other versions
SE9604511D0 (sv
SE9604511A0 (sv
Inventor
Kaj Henricson
Original Assignee
Ahlstrom Machinery 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
Priority claimed from FI955879A external-priority patent/FI955879A/sv
Application filed by Ahlstrom Machinery Oy filed Critical Ahlstrom Machinery Oy
Publication of SE9604511D0 publication Critical patent/SE9604511D0/sv
Publication of SE9604511A0 publication Critical patent/SE9604511A0/sv
Publication of SE9604511L publication Critical patent/SE9604511L/sv

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
    • 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
    • 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
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE9604511A 1995-12-07 1996-12-06 Förfarande för blekning av kraftmassa SE9604511L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI955879A FI955879A (sv) 1995-11-21 1995-12-07 Förfarande för blekning av kraftmassa

Publications (3)

Publication Number Publication Date
SE9604511D0 SE9604511D0 (sv) 1996-12-06
SE9604511A0 SE9604511A0 (sv) 1997-06-08
SE9604511L true SE9604511L (sv) 1997-06-08

Family

ID=8544502

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9604511A SE9604511L (sv) 1995-12-07 1996-12-06 Förfarande för blekning av kraftmassa

Country Status (1)

Country Link
SE (1) SE9604511L (sv)

Also Published As

Publication number Publication date
SE9604511D0 (sv) 1996-12-06
SE9604511A0 (sv) 1997-06-08

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Legal Events

Date Code Title Description
NAV Patent application has lapsed