ZA952751B - Pre-treatment of sulfite pulp before bleaching with oxygen containing chemicals - Google Patents

Pre-treatment of sulfite pulp before bleaching with oxygen containing chemicals

Info

Publication number
ZA952751B
ZA952751B ZA952751A ZA952751A ZA952751B ZA 952751 B ZA952751 B ZA 952751B ZA 952751 A ZA952751 A ZA 952751A ZA 952751 A ZA952751 A ZA 952751A ZA 952751 B ZA952751 B ZA 952751B
Authority
ZA
South Africa
Prior art keywords
treatment
oxygen containing
sulfite pulp
containing chemicals
pulp before
Prior art date
Application number
ZA952751A
Inventor
Bernard Frederick Garrood
Edward Becker
Sen Ben
Original Assignee
Western Pulp Inc
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 Western Pulp Inc filed Critical Western Pulp Inc
Publication of ZA952751B publication Critical patent/ZA952751B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K1/00—Damping wood
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating 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
    • 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Paper (AREA)
ZA952751A 1994-04-22 1995-04-04 Pre-treatment of sulfite pulp before bleaching with oxygen containing chemicals ZA952751B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002121969A CA2121969C (en) 1994-04-22 1994-04-22 Pre-treatment of sulfite pulp before bleaching with oxygen containing chemicals

Publications (1)

Publication Number Publication Date
ZA952751B true ZA952751B (en) 1995-12-21

Family

ID=4153447

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA952751A ZA952751B (en) 1994-04-22 1995-04-04 Pre-treatment of sulfite pulp before bleaching with oxygen containing chemicals

Country Status (4)

Country Link
JP (1) JPH0841791A (en)
CA (1) CA2121969C (en)
NO (1) NO951464L (en)
ZA (1) ZA952751B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4641629B2 (en) * 2001-01-26 2011-03-02 日本製紙株式会社 Cellulose fiber material pulp bleaching method

Also Published As

Publication number Publication date
NO951464L (en) 1995-10-23
CA2121969C (en) 1997-11-04
NO951464D0 (en) 1995-04-19
CA2121969A1 (en) 1995-10-23
JPH0841791A (en) 1996-02-13

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