ZA977712B - Process for the bleaching of pulp. - Google Patents

Process for the bleaching of pulp.

Info

Publication number
ZA977712B
ZA977712B ZA9707712A ZA977712A ZA977712B ZA 977712 B ZA977712 B ZA 977712B ZA 9707712 A ZA9707712 A ZA 9707712A ZA 977712 A ZA977712 A ZA 977712A ZA 977712 B ZA977712 B ZA 977712B
Authority
ZA
South Africa
Prior art keywords
bleaching
pulp
Prior art date
Application number
ZA9707712A
Inventor
Johan Devenyns
Eric Chauveheid
Lucien Plumet
Original Assignee
Solvay Interox
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 Solvay Interox filed Critical Solvay Interox
Publication of ZA977712B publication Critical patent/ZA977712B/en

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
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
ZA9707712A 1996-09-11 1997-08-27 Process for the bleaching of pulp. ZA977712B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE9600764A BE1010617A3 (en) 1996-09-11 1996-09-11 Paper pulp bleaching method

Publications (1)

Publication Number Publication Date
ZA977712B true ZA977712B (en) 1998-02-23

Family

ID=3889962

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9707712A ZA977712B (en) 1996-09-11 1997-08-27 Process for the bleaching of pulp.

Country Status (2)

Country Link
BE (1) BE1010617A3 (en)
ZA (1) ZA977712B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69420306T2 (en) * 1993-04-20 2000-04-20 Eka Chemicals Ab Process for bleaching lignocellulosic pulp
SE504826C2 (en) * 1994-10-07 1997-05-12 Sunds Defibrator Ind Ab Treatment of chemical pulp with complexing agents in the presence of an oxidizing agent
EP0858526A1 (en) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide

Also Published As

Publication number Publication date
BE1010617A3 (en) 1998-11-03

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