ZA921843B - Ozone-alkaline extraction bleaching without intermediate washing - Google Patents

Ozone-alkaline extraction bleaching without intermediate washing

Info

Publication number
ZA921843B
ZA921843B ZA921843A ZA921843A ZA921843B ZA 921843 B ZA921843 B ZA 921843B ZA 921843 A ZA921843 A ZA 921843A ZA 921843 A ZA921843 A ZA 921843A ZA 921843 B ZA921843 B ZA 921843B
Authority
ZA
South Africa
Prior art keywords
bleaching
ozone
alkaline extraction
intermediate washing
washing
Prior art date
Application number
ZA921843A
Inventor
Jian Er Jiang
Er Jiang Jian
Joseph R Phillips
R Phillips Joseph
Brian F Greenwood
F Greenwood Brian
Original Assignee
Kamyr 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 Kamyr Inc filed Critical Kamyr Inc
Publication of ZA921843B publication Critical patent/ZA921843B/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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
ZA921843A 1991-06-28 1992-03-12 Ozone-alkaline extraction bleaching without intermediate washing ZA921843B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72178091A 1991-06-28 1991-06-28

Publications (1)

Publication Number Publication Date
ZA921843B true ZA921843B (en) 1992-12-30

Family

ID=24899279

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA921843A ZA921843B (en) 1991-06-28 1992-03-12 Ozone-alkaline extraction bleaching without intermediate washing

Country Status (7)

Country Link
EP (1) EP0520140A1 (en)
AU (1) AU1282692A (en)
BR (1) BR9202472A (en)
FI (1) FI922945A (en)
MX (1) MX9203191A (en)
NO (1) NO922526L (en)
ZA (1) ZA921843B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
JP3121917B2 (en) * 1992-07-08 2001-01-09 住友重機械工業株式会社 Pulp bleaching method with ozone

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA966604A (en) * 1970-12-21 1975-04-29 Scott Paper Company Kraft pulp bleaching and recovery process
CA1112813A (en) * 1978-04-06 1981-11-24 Arthur W. Kempf Method for extracting ozone-treated fibrous materials
CA1178756A (en) * 1981-06-29 1984-12-04 Shyam S. Bhattacharjee Alkaline extraction initiated ozone bleaching of kraft pulp

Also Published As

Publication number Publication date
EP0520140A1 (en) 1992-12-30
BR9202472A (en) 1993-02-09
FI922945A0 (en) 1992-06-25
NO922526D0 (en) 1992-06-26
FI922945A (en) 1992-12-29
MX9203191A (en) 1992-12-01
AU1282692A (en) 1993-01-07
NO922526L (en) 1992-12-29

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