CA2073862C - Blanchiment de materiau lignocellulosique avec des dioxiranes - Google Patents

Blanchiment de materiau lignocellulosique avec des dioxiranes

Info

Publication number
CA2073862C
CA2073862C CA 2073862 CA2073862A CA2073862C CA 2073862 C CA2073862 C CA 2073862C CA 2073862 CA2073862 CA 2073862 CA 2073862 A CA2073862 A CA 2073862A CA 2073862 C CA2073862 C CA 2073862C
Authority
CA
Canada
Prior art keywords
pulp
chlorine dioxide
stage
bleaching
dioxirane
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
CA 2073862
Other languages
English (en)
Other versions
CA2073862A1 (fr
Inventor
Chung-Li Lee
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.)
FPInnovations
Original Assignee
Pulp and Paper Research Institute of Canada
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 Pulp and Paper Research Institute of Canada filed Critical Pulp and Paper Research Institute of Canada
Priority to CA 2073862 priority Critical patent/CA2073862C/fr
Publication of CA2073862A1 publication Critical patent/CA2073862A1/fr
Application granted granted Critical
Publication of CA2073862C publication Critical patent/CA2073862C/fr
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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • 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)
CA 2073862 1990-02-16 1990-02-16 Blanchiment de materiau lignocellulosique avec des dioxiranes Expired - Fee Related CA2073862C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2073862 CA2073862C (fr) 1990-02-16 1990-02-16 Blanchiment de materiau lignocellulosique avec des dioxiranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2073862 CA2073862C (fr) 1990-02-16 1990-02-16 Blanchiment de materiau lignocellulosique avec des dioxiranes

Publications (2)

Publication Number Publication Date
CA2073862A1 CA2073862A1 (fr) 1991-08-17
CA2073862C true CA2073862C (fr) 1996-12-03

Family

ID=4150157

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2073862 Expired - Fee Related CA2073862C (fr) 1990-02-16 1990-02-16 Blanchiment de materiau lignocellulosique avec des dioxiranes

Country Status (1)

Country Link
CA (1) CA2073862C (fr)

Also Published As

Publication number Publication date
CA2073862A1 (fr) 1991-08-17

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Legal Events

Date Code Title Description
EEER Examination request
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