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FI914694A - Foerfarande foer klorfattig blekning och delignifiering av cellulosa. - Google Patents

Foerfarande foer klorfattig blekning och delignifiering av cellulosa. Download PDF

Info

Publication number
FI914694A
FI914694A FI914694A FI914694A FI914694A FI 914694 A FI914694 A FI 914694A FI 914694 A FI914694 A FI 914694A FI 914694 A FI914694 A FI 914694A FI 914694 A FI914694 A FI 914694A
Authority
FI
Finland
Prior art keywords
klorfattig
delignifiering
blekning
cellulosa
och
Prior art date
Application number
FI914694A
Other languages
English (en)
Other versions
FI914694A0 (fi
Inventor
Werner Sturm
Ludwig Eibl
Original Assignee
Sueddeutsche Kalkstickstoff
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 Sueddeutsche Kalkstickstoff filed Critical Sueddeutsche Kalkstickstoff
Publication of FI914694A0 publication Critical patent/FI914694A0/fi
Publication of FI914694A publication Critical patent/FI914694A/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
    • D21C9/1026—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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Cereal-Derived Products (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Detergent Compositions (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
FI914694A 1990-10-05 1991-10-04 Foerfarande foer klorfattig blekning och delignifiering av cellulosa. FI914694A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4031597A DE4031597A1 (de) 1990-10-05 1990-10-05 Verfahren zur chlorarmen bleiche und delignifizierung von zellstoff

Publications (2)

Publication Number Publication Date
FI914694A0 FI914694A0 (fi) 1991-10-04
FI914694A true FI914694A (fi) 1992-04-06

Family

ID=6415688

Family Applications (1)

Application Number Title Priority Date Filing Date
FI914694A FI914694A (fi) 1990-10-05 1991-10-04 Foerfarande foer klorfattig blekning och delignifiering av cellulosa.

Country Status (7)

Country Link
EP (1) EP0479319B1 (fi)
AT (1) ATE120815T1 (fi)
CA (1) CA2052758A1 (fi)
DE (2) DE4031597A1 (fi)
ES (1) ES2070388T3 (fi)
FI (1) FI914694A (fi)
NO (1) NO913848L (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009045628A1 (de) 2009-10-13 2011-04-14 Henkel Ag & Co. Kgaa Bleichaktivatoren für Verfahren zum Bleichen von cellulosischen Faserstoffen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE664257C (de) * 1929-09-11 1938-08-25 Degussa Verfahren zum Veredeln von Zellstoffen
AT167849B (de) * 1945-01-10 1951-03-10 Buffalo Electro Chem Co Verfahren zum Bleichen von Holzschliff
AT183646B (de) * 1950-06-30 1955-10-25 Buffalo Electro Chem Co Verfahren zum Bleichen von Sulfat- oder Sulfitzellstoff
DE2742262C2 (de) * 1977-09-20 1982-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung eines mittel- bis hochviskosen Nadelholz-Sulfitzellstoffs
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
FR2589494B1 (fr) * 1985-10-30 1988-07-29 Atochem Procede de blanchiment de pates papetieres chimiques
DE3544398A1 (de) * 1985-12-16 1987-06-19 Sueddeutsche Kalkstickstoff Verfahren zur bleiche und delignifizierung von zellstoffhaltigen produkten
DE4004364A1 (de) * 1990-02-13 1991-08-14 Sueddeutsche Kalkstickstoff Verfahren zur chlorfreien bleiche und delignifizierung von zellstoff

Also Published As

Publication number Publication date
NO913848L (no) 1992-04-06
ES2070388T3 (es) 1995-06-01
ATE120815T1 (de) 1995-04-15
EP0479319A1 (de) 1992-04-08
NO913848D0 (no) 1991-10-01
DE59105105D1 (de) 1995-05-11
DE4031597A1 (de) 1992-04-09
EP0479319B1 (de) 1995-04-05
CA2052758A1 (en) 1992-04-06
FI914694A0 (fi) 1991-10-04

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Legal Events

Date Code Title Description
FD Application lapsed