AU7752991A - Bleaching of chemical pulp - Google Patents

Bleaching of chemical pulp

Info

Publication number
AU7752991A
AU7752991A AU77529/91A AU7752991A AU7752991A AU 7752991 A AU7752991 A AU 7752991A AU 77529/91 A AU77529/91 A AU 77529/91A AU 7752991 A AU7752991 A AU 7752991A AU 7752991 A AU7752991 A AU 7752991A
Authority
AU
Australia
Prior art keywords
bleaching
chemical pulp
pulp
chemical
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU77529/91A
Inventor
Per-Ake Farnstrand
Lars T Sjodin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valmet AB
Original Assignee
Sunds Defibrator Industries AB
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 Sunds Defibrator Industries AB filed Critical Sunds Defibrator Industries AB
Publication of AU7752991A publication Critical patent/AU7752991A/en
Abandoned legal-status Critical Current

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
    • D21C11/0028—Effluents derived from the washing or bleaching plants
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
AU77529/91A 1990-04-30 1991-03-13 Bleaching of chemical pulp Abandoned AU7752991A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9001547 1990-04-30
SE9001547A SE9001547L (en) 1990-04-30 1990-04-30 BLEACHING OF CHEMICAL MASS

Publications (1)

Publication Number Publication Date
AU7752991A true AU7752991A (en) 1991-11-27

Family

ID=20379337

Family Applications (1)

Application Number Title Priority Date Filing Date
AU77529/91A Abandoned AU7752991A (en) 1990-04-30 1991-03-13 Bleaching of chemical pulp

Country Status (5)

Country Link
AU (1) AU7752991A (en)
PT (1) PT97536A (en)
SE (1) SE9001547L (en)
WO (1) WO1991017307A1 (en)
ZA (1) ZA912503B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122241B (en) 2007-06-15 2011-10-31 Andritz Oy Procedure in connection with pulp washing at a pulp mill
FI20080298L (en) * 2007-06-15 2009-10-22 Andritz Oy Procedure for the treatment and use of liquid streams in a pulp mill
US20090000751A1 (en) * 2007-06-29 2009-01-01 Caifang Yin Bleaching process with at least one extraction stage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE353928B (en) * 1967-01-16 1973-02-19 Electric Reduction Co
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation
FR2432574A1 (en) * 1978-08-01 1980-02-29 Europeen Cellulose PROCESS FOR BLEACHING PAPER PULP

Also Published As

Publication number Publication date
PT97536A (en) 1992-01-31
SE9001547L (en) 1991-10-31
SE9001547D0 (en) 1990-04-30
ZA912503B (en) 1992-01-29
WO1991017307A1 (en) 1991-11-14

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