SE9501891L - Förfarande för blekning av kemisk, mekanisk, kemisk-mekanisk och/eller återvunnen massa med peroxid - Google Patents

Förfarande för blekning av kemisk, mekanisk, kemisk-mekanisk och/eller återvunnen massa med peroxid

Info

Publication number
SE9501891L
SE9501891L SE9501891A SE9501891A SE9501891L SE 9501891 L SE9501891 L SE 9501891L SE 9501891 A SE9501891 A SE 9501891A SE 9501891 A SE9501891 A SE 9501891A SE 9501891 L SE9501891 L SE 9501891L
Authority
SE
Sweden
Prior art keywords
mechanical
chemical
peroxide
bleaching
recycled pulp
Prior art date
Application number
SE9501891A
Other languages
Unknown language ( )
English (en)
Swedish (sv)
Other versions
SE9501891D0 (sv
Inventor
Soile Peltonen
Olavi Pikka
Original Assignee
Ahlstroem Oy
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 Ahlstroem Oy filed Critical Ahlstroem Oy
Publication of SE9501891D0 publication Critical patent/SE9501891D0/xx
Publication of SE9501891L publication Critical patent/SE9501891L/

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
    • D21C9/1042—Use of chelating 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE9501891A 1994-05-20 1995-05-19 Förfarande för blekning av kemisk, mekanisk, kemisk-mekanisk och/eller återvunnen massa med peroxid SE9501891L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI942341A FI942341A (fi) 1994-05-20 1994-05-20 Menetelmä mekaanisen, kemimekaanisen ja/tai kiertokuitumassan valkaisemiseksi peroksidilla

Publications (2)

Publication Number Publication Date
SE9501891D0 SE9501891D0 (sv) 1995-05-19
SE9501891L true SE9501891L (sv) 1995-11-21

Family

ID=8540740

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9501891A SE9501891L (sv) 1994-05-20 1995-05-19 Förfarande för blekning av kemisk, mekanisk, kemisk-mekanisk och/eller återvunnen massa med peroxid

Country Status (3)

Country Link
DE (1) DE19509401A1 (de)
FI (1) FI942341A (de)
SE (1) SE9501891L (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023929A1 (en) * 1995-01-31 1996-08-08 A. Ahlstrom Corporation Bleaching pulp with peroxide at superatmospheric pressure and in multiple stages
DE19704054C2 (de) * 1997-02-04 2000-08-10 Stockhausen Chem Fab Gmbh Verfahren zur Herstellung von Faserstoffen mit verbesserten Eigenschaften
US20080110584A1 (en) * 2006-11-15 2008-05-15 Caifang Yin Bleaching process with at least one extraction stage

Also Published As

Publication number Publication date
FI942341A0 (fi) 1994-05-20
SE9501891D0 (sv) 1995-05-19
FI942341A (fi) 1995-11-21
DE19509401A1 (de) 1995-11-23

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