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BR9202472A - METHOD OF WASHING CELLULOSE CHEMICAL PULP IN MULTIPLE STAGES - Google Patents

METHOD OF WASHING CELLULOSE CHEMICAL PULP IN MULTIPLE STAGES

Info

Publication number
BR9202472A
BR9202472A BR929202472A BR9202472A BR9202472A BR 9202472 A BR9202472 A BR 9202472A BR 929202472 A BR929202472 A BR 929202472A BR 9202472 A BR9202472 A BR 9202472A BR 9202472 A BR9202472 A BR 9202472A
Authority
BR
Brazil
Prior art keywords
multiple stages
chemical pulp
washing cellulose
cellulose chemical
washing
Prior art date
Application number
BR929202472A
Other languages
Portuguese (pt)
Inventor
Jian Er Jiang
Joseph R Phillips
Brian F Greenwood
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 BR9202472A publication Critical patent/BR9202472A/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)
BR929202472A 1991-06-28 1992-07-07 METHOD OF WASHING CELLULOSE CHEMICAL PULP IN MULTIPLE STAGES BR9202472A (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
BR9202472A true BR9202472A (en) 1993-02-09

Family

ID=24899279

Family Applications (1)

Application Number Title Priority Date Filing Date
BR929202472A BR9202472A (en) 1991-06-28 1992-07-07 METHOD OF WASHING CELLULOSE CHEMICAL PULP IN MULTIPLE STAGES

Country Status (7)

Country Link
EP (1) EP0520140A1 (en)
AU (1) AU1282692A (en)
BR (1) BR9202472A (en)
FI (1) FI922945L (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
FI922945A0 (en) 1992-06-25
FI922945A7 (en) 1992-12-29
ZA921843B (en) 1992-12-30
FI922945L (en) 1992-12-29
NO922526L (en) 1992-12-29
EP0520140A1 (en) 1992-12-30
MX9203191A (en) 1992-12-01
NO922526D0 (en) 1992-06-26
AU1282692A (en) 1993-01-07

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Legal Events

Date Code Title Description
FA1 Application withdrawn (art. 18(2))