SE8904247L - Foerfarande foer blekning av kemisk cellulosamassa - Google Patents

Foerfarande foer blekning av kemisk cellulosamassa

Info

Publication number
SE8904247L
SE8904247L SE8904247A SE8904247A SE8904247L SE 8904247 L SE8904247 L SE 8904247L SE 8904247 A SE8904247 A SE 8904247A SE 8904247 A SE8904247 A SE 8904247A SE 8904247 L SE8904247 L SE 8904247L
Authority
SE
Sweden
Prior art keywords
pulp
bleaching
ozone
chlorine dioxide
oxygen
Prior art date
Application number
SE8904247A
Other languages
English (en)
Other versions
SE465224B (sv
SE8904247D0 (sv
Inventor
H O Samuelson
Original Assignee
Eka Nobel Ab
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 Eka Nobel Ab filed Critical Eka Nobel Ab
Priority to SE8904247A priority Critical patent/SE465224B/sv
Publication of SE8904247D0 publication Critical patent/SE8904247D0/sv
Priority to CA002032315A priority patent/CA2032315C/en
Priority to FI906196A priority patent/FI906196A/fi
Publication of SE8904247L publication Critical patent/SE8904247L/sv
Publication of SE465224B publication Critical patent/SE465224B/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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE8904247A 1989-12-18 1989-12-18 Blekning av kemisk cellulosamassa med klordioxid och ozon SE465224B (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8904247A SE465224B (sv) 1989-12-18 1989-12-18 Blekning av kemisk cellulosamassa med klordioxid och ozon
CA002032315A CA2032315C (en) 1989-12-18 1990-12-14 Process for bleaching of chemical cellulose pulp
FI906196A FI906196A (fi) 1989-12-18 1990-12-14 Foerfarande foer blekning av kemisk cellulosamassa.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8904247A SE465224B (sv) 1989-12-18 1989-12-18 Blekning av kemisk cellulosamassa med klordioxid och ozon

Publications (3)

Publication Number Publication Date
SE8904247D0 SE8904247D0 (sv) 1989-12-18
SE8904247L true SE8904247L (sv) 1991-06-19
SE465224B SE465224B (sv) 1991-08-12

Family

ID=20377792

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8904247A SE465224B (sv) 1989-12-18 1989-12-18 Blekning av kemisk cellulosamassa med klordioxid och ozon

Country Status (3)

Country Link
CA (1) CA2032315C (sv)
FI (1) FI906196A (sv)
SE (1) SE465224B (sv)

Also Published As

Publication number Publication date
FI906196A0 (fi) 1990-12-14
SE465224B (sv) 1991-08-12
CA2032315A1 (en) 1991-06-19
FI906196A (fi) 1991-06-19
SE8904247D0 (sv) 1989-12-18
CA2032315C (en) 1997-04-15

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