FI950785A0 - Menetelmä massan valkaisemiseksi - Google Patents

Menetelmä massan valkaisemiseksi

Info

Publication number
FI950785A0
FI950785A0 FI950785A FI950785A FI950785A0 FI 950785 A0 FI950785 A0 FI 950785A0 FI 950785 A FI950785 A FI 950785A FI 950785 A FI950785 A FI 950785A FI 950785 A0 FI950785 A0 FI 950785A0
Authority
FI
Finland
Prior art keywords
bleaching pulp
bleaching
pulp
Prior art date
Application number
FI950785A
Other languages
English (en)
Swedish (sv)
Other versions
FI950785A (fi
FI103818B (fi
FI103818B1 (fi
Inventor
Myoeh Ilm
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
Priority to FI950785A priority Critical patent/FI103818B1/fi
Publication of FI950785A0 publication Critical patent/FI950785A0/fi
Priority to SE9600575A priority patent/SE9600575L/
Priority to US08/603,590 priority patent/US5766414A/en
Publication of FI950785A publication Critical patent/FI950785A/fi
Application granted granted Critical
Publication of FI103818B publication Critical patent/FI103818B/fi
Publication of FI103818B1 publication Critical patent/FI103818B1/fi

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
    • D21C9/16—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)
FI950785A 1995-02-21 1995-02-21 Menetelmä massan valkaisemiseksi FI103818B1 (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI950785A FI103818B1 (fi) 1995-02-21 1995-02-21 Menetelmä massan valkaisemiseksi
SE9600575A SE9600575L (sv) 1995-02-21 1996-02-16 Förfarande för blekning av massa
US08/603,590 US5766414A (en) 1995-02-21 1996-02-16 Method of bleaching cellulose pulp with peroxide under elevated pressure in a first vessel and atmospheric pressure in second vessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI950785 1995-02-21
FI950785A FI103818B1 (fi) 1995-02-21 1995-02-21 Menetelmä massan valkaisemiseksi

Publications (4)

Publication Number Publication Date
FI950785A0 true FI950785A0 (fi) 1995-02-21
FI950785A FI950785A (fi) 1996-08-22
FI103818B FI103818B (fi) 1999-09-30
FI103818B1 FI103818B1 (fi) 1999-09-30

Family

ID=8542902

Family Applications (1)

Application Number Title Priority Date Filing Date
FI950785A FI103818B1 (fi) 1995-02-21 1995-02-21 Menetelmä massan valkaisemiseksi

Country Status (3)

Country Link
US (1) US5766414A (fi)
FI (1) FI103818B1 (fi)
SE (1) SE9600575L (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7297225B2 (en) * 2004-06-22 2007-11-20 Georgia-Pacific Consumer Products Lp Process for high temperature peroxide bleaching of pulp with cool discharge
WO2009050882A1 (ja) * 2007-10-17 2009-04-23 Nippon Steel Chemical Co., Ltd. 可溶化リグニン、糖類原料および単糖類原料の製造方法ならびに可溶化リグニン

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA924351B (en) * 1991-06-27 1993-03-31 Ahlstroem Oy Ozone bleaching process
FI93232C (fi) * 1993-03-03 1995-03-10 Ahlstroem Oy Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
US6605181B1 (en) * 1993-10-01 2003-08-12 Kvaerner Pulping Aktiebolag Peroxide bleach sequence including an acidic bleach stage and including a wash stage

Also Published As

Publication number Publication date
US5766414A (en) 1998-06-16
SE9600575L (sv) 1996-08-22
FI950785A (fi) 1996-08-22
SE9600575D0 (sv) 1996-02-16
FI103818B (fi) 1999-09-30
FI103818B1 (fi) 1999-09-30

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Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: AHLSTROM MACHINERY OY