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

Similar Documents

Publication Publication Date Title
GB9821165D0 (en) Oxygen bleaching of pulp using an agglomerated bleach activator
ZA876920B (en) Process for the bleaching of cellulosic pulps using hydrogen peroxide
FI940412A0 (en) Oxygen / ozone / peracetic acid delignification and bleaching of cellulosic pulps
FI944928A (en) Procedure for bleaching chemical pulp
AU539178B2 (en) Oxygen bleaching chemically digested cellulose pulp
NO964609L (en) Process for the preparation of delignified and bleached chemical pulp
AU7826094A (en) Method of treating chemical paper pulp without using chlorine-containing chemicals
AU3602295A (en) Process for delignification and bleaching of chemical wood pulps
ZA931096B (en) Modified digestion of paper pulp followed by ozone bleaching
ZA921626B (en) Process for bleaching a chemical paper pulp and application of this process to the bleaching of a kraft pulp.
FI945721A0 (en) Bleaching of recycled pulp with ozone and hydrogen peroxide
NO971407D0 (en) Process for delignification and bleaching of chemical pulp
ZA952751B (en) Pre-treatment of sulfite pulp before bleaching with oxygen containing chemicals
JPS57121691A (en) Delignifying and/or bleaching of cellulose pulp
PL287416A1 (en) Cellulosic pulp bleaching process using chlorine dioxide and chlorine
ZA911062B (en) Bleaching of paper pulp
PH21180A (en) Process for the delignification and bleaching of chemical or semi-chemical bagasse pulp
NO953440D0 (en) Procedure for Delignification of Chemical Pulp
ZA924021B (en) Process for the bleaching and delignification of chemical paper pulps and application of this process to the bleaching and delignification of kraft pulps and of asam pulps
FI945202A0 (en) Bleaching of chemical pulp
AU2202188A (en) Method of bleaching or delignification of cellulose pulp with oxygen
FI960973A (en) Ozone bleaching of high density ozone bleached pulp
ZA955971B (en) Method of bleaching pulp
AU7752991A (en) Bleaching of chemical pulp
AU6325596A (en) Bleaching of lignocellulosic pulp with ozone and peracid