CA2576882C - 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
CA2576882C
CA2576882C CA2576882A CA2576882A CA2576882C CA 2576882 C CA2576882 C CA 2576882C CA 2576882 A CA2576882 A CA 2576882A CA 2576882 A CA2576882 A CA 2576882A CA 2576882 C CA2576882 C CA 2576882C
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Prior art keywords
amino
pulp
bis
bleaching
brightness
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CA2576882A
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CA2576882A1 (fr
Inventor
Mengjun Li
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Individual
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Individual
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Priority to CA2576882A priority Critical patent/CA2576882C/fr
Publication of CA2576882A1 publication Critical patent/CA2576882A1/fr
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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
    • D21C9/16—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
    • D21C9/1026—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
    • D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

Divulgation d'une méthode et de compositions à base de tétra-acétyléthylènediamine (TAED) ajoutée à une solution de blanchiment de peroxyde d'hydrogène pour améliorer l'efficacité du peroxyde, et utilisant un azurant fluorescent ajouté à la solution de blanchiment de peroxyde d'hydrogène pour accroître la brillance de la pâte d'une pâte de bois mécanique et pour réduire la perte de blancheur de pâtes mécaniques de brillance élevée. La brillance de la pâte de résineux après la tour de blanchiment est supérieure à 86 % en points ISO.
CA2576882A 2007-01-25 2007-01-25 Composition et processus de blanchiment de la pate mecanique Active CA2576882C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2576882A CA2576882C (fr) 2007-01-25 2007-01-25 Composition et processus de blanchiment de la pate mecanique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2576882A CA2576882C (fr) 2007-01-25 2007-01-25 Composition et processus de blanchiment de la pate mecanique

Publications (2)

Publication Number Publication Date
CA2576882A1 CA2576882A1 (fr) 2008-07-25
CA2576882C true CA2576882C (fr) 2011-05-03

Family

ID=39642827

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2576882A Active CA2576882C (fr) 2007-01-25 2007-01-25 Composition et processus de blanchiment de la pate mecanique

Country Status (1)

Country Link
CA (1) CA2576882C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2966467B1 (fr) * 2010-10-26 2014-11-07 Berkem Sa Composition pour le traitement du bois
US9181656B2 (en) * 2013-11-06 2015-11-10 Meng Jun Li FWA formulation used for the papermaking process

Also Published As

Publication number Publication date
CA2576882A1 (fr) 2008-07-25

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