SE9203122L - Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen - Google Patents

Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen

Info

Publication number
SE9203122L
SE9203122L SE9203122A SE9203122A SE9203122L SE 9203122 L SE9203122 L SE 9203122L SE 9203122 A SE9203122 A SE 9203122A SE 9203122 A SE9203122 A SE 9203122A SE 9203122 L SE9203122 L SE 9203122L
Authority
SE
Sweden
Prior art keywords
bleaching
addition
peroxide
magnesium
sulfate pulp
Prior art date
Application number
SE9203122A
Other languages
Unknown language ( )
English (en)
Other versions
SE500353C2 (sv
SE9203122D0 (sv
Inventor
Goeran Annergren
Maria Lundin
Original Assignee
Sca Wifsta Oestrand 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 Sca Wifsta Oestrand Ab filed Critical Sca Wifsta Oestrand Ab
Priority to SE9203122A priority Critical patent/SE500353C2/sv
Publication of SE9203122D0 publication Critical patent/SE9203122D0/sv
Priority to AU54002/94A priority patent/AU5400294A/en
Priority to PCT/SE1993/000868 priority patent/WO1994010374A1/en
Publication of SE9203122L publication Critical patent/SE9203122L/sv
Publication of SE500353C2 publication Critical patent/SE500353C2/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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE9203122A 1992-10-26 1992-10-26 Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen SE500353C2 (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9203122A SE500353C2 (sv) 1992-10-26 1992-10-26 Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen
AU54002/94A AU5400294A (en) 1992-10-26 1993-10-25 Method for peroxide bleaching of sulphate pulp
PCT/SE1993/000868 WO1994010374A1 (en) 1992-10-26 1993-10-25 Method for peroxide bleaching of sulphate pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9203122A SE500353C2 (sv) 1992-10-26 1992-10-26 Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen

Publications (3)

Publication Number Publication Date
SE9203122D0 SE9203122D0 (sv) 1992-10-26
SE9203122L true SE9203122L (sv) 1994-04-27
SE500353C2 SE500353C2 (sv) 1994-06-06

Family

ID=20387556

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9203122A SE500353C2 (sv) 1992-10-26 1992-10-26 Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen

Country Status (3)

Country Link
AU (1) AU5400294A (sv)
SE (1) SE500353C2 (sv)
WO (1) WO1994010374A1 (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9301960L (sv) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Blekning av kemisk massa med peroxid vid övertryck
DE4436761A1 (de) * 1994-10-14 1996-04-18 Henkel Kgaa Verfahren zur Herstellung hellfarbiger Alkyl- und/oder Alkenyloligoglykoside
US6699358B1 (en) 1998-05-15 2004-03-02 National Silicates Partnership Method for brightening chemical pulp with hydrogen peroxide using a magnesium compound in silicate solution
CA2332304C (en) * 1998-05-15 2005-01-11 National Silicates Partnership Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps
SE0102012L (sv) * 2001-06-07 2002-12-08 Metso Paper Inc Tvättning av massa
FI20225978A1 (sv) * 2022-11-02 2024-05-03 Upm Kymmene Corp Anordning och förfarande för kontrollerande av magnesiumsulfat inmatning

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2841013C2 (de) * 1978-09-21 1984-06-07 Degussa Ag, 6000 Frankfurt Verfahren zur Vollbleiche von Zellstoff
SE470065C (sv) * 1991-04-30 1996-01-15 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning

Also Published As

Publication number Publication date
SE500353C2 (sv) 1994-06-06
WO1994010374A1 (en) 1994-05-11
AU5400294A (en) 1994-05-24
SE9203122D0 (sv) 1992-10-26

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