CA2743838A1 - Composition et processus de blanchiment de la pate mecanique - Google Patents

Composition et processus de blanchiment de la pate mecanique Download PDF

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Publication number
CA2743838A1
CA2743838A1 CA 2743838 CA2743838A CA2743838A1 CA 2743838 A1 CA2743838 A1 CA 2743838A1 CA 2743838 CA2743838 CA 2743838 CA 2743838 A CA2743838 A CA 2743838A CA 2743838 A1 CA2743838 A1 CA 2743838A1
Authority
CA
Canada
Prior art keywords
cas
acid
pulp
bleaching
methylene phosphonic
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.)
Abandoned
Application number
CA 2743838
Other languages
English (en)
Inventor
Meng J. Li
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA 2743838 priority Critical patent/CA2743838A1/fr
Publication of CA2743838A1 publication Critical patent/CA2743838A1/fr
Abandoned legal-status Critical Current

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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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • 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)
  • Paper (AREA)
CA 2743838 2011-06-20 2011-06-20 Composition et processus de blanchiment de la pate mecanique Abandoned CA2743838A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2743838 CA2743838A1 (fr) 2011-06-20 2011-06-20 Composition et processus de blanchiment de la pate mecanique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2743838 CA2743838A1 (fr) 2011-06-20 2011-06-20 Composition et processus de blanchiment de la pate mecanique

Publications (1)

Publication Number Publication Date
CA2743838A1 true CA2743838A1 (fr) 2012-12-20

Family

ID=47429392

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2743838 Abandoned CA2743838A1 (fr) 2011-06-20 2011-06-20 Composition et processus de blanchiment de la pate mecanique

Country Status (1)

Country Link
CA (1) CA2743838A1 (fr)

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Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20160311

FZDE Dead

Effective date: 20180409