SE9001547L - Blekningav kemisk massa - Google Patents

Blekningav kemisk massa

Info

Publication number
SE9001547L
SE9001547L SE9001547A SE9001547A SE9001547L SE 9001547 L SE9001547 L SE 9001547L SE 9001547 A SE9001547 A SE 9001547A SE 9001547 A SE9001547 A SE 9001547A SE 9001547 L SE9001547 L SE 9001547L
Authority
SE
Sweden
Prior art keywords
pulp
bleaching
alkaline
amount
ton
Prior art date
Application number
SE9001547A
Other languages
Unknown language ( )
English (en)
Other versions
SE9001547D0 (sv
Inventor
P-Aa Faernstrand
Original Assignee
Sunds Defibrator Ind 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 Ind Ab filed Critical Sunds Defibrator Ind Ab
Priority to SE9001547A priority Critical patent/SE9001547L/sv
Publication of SE9001547D0 publication Critical patent/SE9001547D0/sv
Priority to AU77529/91A priority patent/AU7752991A/en
Priority to PCT/SE1991/000189 priority patent/WO1991017307A1/en
Priority to ZA912503A priority patent/ZA912503B/xx
Priority to PT97536A priority patent/PT97536A/pt
Publication of SE9001547L publication Critical patent/SE9001547L/sv

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)
SE9001547A 1990-04-30 1990-04-30 Blekningav kemisk massa SE9001547L (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9001547A SE9001547L (sv) 1990-04-30 1990-04-30 Blekningav kemisk massa
AU77529/91A AU7752991A (en) 1990-04-30 1991-03-13 Bleaching of chemical pulp
PCT/SE1991/000189 WO1991017307A1 (en) 1990-04-30 1991-03-13 Bleaching of chemical pulp
ZA912503A ZA912503B (en) 1990-04-30 1991-04-04 Bleacing of chemical pulp
PT97536A PT97536A (pt) 1990-04-30 1991-04-30 Processo de branqueamento de pasta quimica em varios passos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9001547A SE9001547L (sv) 1990-04-30 1990-04-30 Blekningav kemisk massa

Publications (2)

Publication Number Publication Date
SE9001547D0 SE9001547D0 (sv) 1990-04-30
SE9001547L true SE9001547L (sv) 1991-10-31

Family

ID=20379337

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001547A SE9001547L (sv) 1990-04-30 1990-04-30 Blekningav kemisk massa

Country Status (5)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122241B (sv) 2007-06-15 2011-10-31 Andritz Oy Förfarande i samband med massatvättning på en massafabrik
FI20080298L (sv) * 2007-06-15 2009-10-22 Andritz Oy Förfarande för behandling och användning av vätskeströmmar i en cellulosafabrik
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 (sv) * 1967-01-16 1973-02-19 Electric Reduction Co
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation
FR2432574A1 (fr) * 1978-08-01 1980-02-29 Europeen Cellulose Procede de blanchiment de pate a papier

Also Published As

Publication number Publication date
PT97536A (pt) 1992-01-31
SE9001547D0 (sv) 1990-04-30
WO1991017307A1 (en) 1991-11-14
AU7752991A (en) 1991-11-27
ZA912503B (en) 1992-01-29

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Legal Events

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NAV Patent application has lapsed

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Effective date: 19921206