ATE179469T1 - Verfahren und vorrichtung zum zellstoffbleichen mit einem gasförmigen bleichmittel - Google Patents

Verfahren und vorrichtung zum zellstoffbleichen mit einem gasförmigen bleichmittel

Info

Publication number
ATE179469T1
ATE179469T1 AT96928093T AT96928093T ATE179469T1 AT E179469 T1 ATE179469 T1 AT E179469T1 AT 96928093 T AT96928093 T AT 96928093T AT 96928093 T AT96928093 T AT 96928093T AT E179469 T1 ATE179469 T1 AT E179469T1
Authority
AT
Austria
Prior art keywords
pulp
bleaching
vessel
gaseous
reagent
Prior art date
Application number
AT96928093T
Other languages
German (de)
English (en)
Inventor
Walter C Vliet
Lewis D Shackford
L Allan Carlsmith
Original Assignee
Beloit Technologies Inc
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 Beloit Technologies Inc filed Critical Beloit Technologies Inc
Application granted granted Critical
Publication of ATE179469T1 publication Critical patent/ATE179469T1/de

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
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Manipulator (AREA)
AT96928093T 1995-07-26 1996-07-16 Verfahren und vorrichtung zum zellstoffbleichen mit einem gasförmigen bleichmittel ATE179469T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US144795P 1995-07-26 1995-07-26

Publications (1)

Publication Number Publication Date
ATE179469T1 true ATE179469T1 (de) 1999-05-15

Family

ID=21696060

Family Applications (1)

Application Number Title Priority Date Filing Date
AT96928093T ATE179469T1 (de) 1995-07-26 1996-07-16 Verfahren und vorrichtung zum zellstoffbleichen mit einem gasförmigen bleichmittel

Country Status (7)

Country Link
EP (1) EP0840820B1 (fr)
JP (1) JPH10510599A (fr)
AT (1) ATE179469T1 (fr)
BR (1) BR9609840A (fr)
CA (1) CA2227690A1 (fr)
DE (1) DE69602269T2 (fr)
WO (1) WO1997005327A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492040A1 (fr) * 1990-12-21 1992-07-01 Kamyr, Inc. Réacteur rotatif à ozone pour pâte à papier
EP0492039A1 (fr) * 1990-12-27 1992-07-01 Kamyr, Inc. Réacteur pneumatique pour le blanchiment à l'ozone de pâte à papier
CA2046717A1 (fr) * 1991-02-06 1992-08-07 Beloit Technologies, Inc. Methode de traitement de matieres fibreuses au moyen d'un reactif gazeux et appareil connexe
NZ242792A (en) * 1991-05-24 1993-12-23 Union Camp Patent Holding Two-stage pulp bleaching reactor: pulp mixed with ozone in first stage.
EP0674731A4 (fr) * 1992-12-18 1997-06-18 Ingersoll Rand Co Procede et appareil de regulation du blanchiment de pate de bois.

Also Published As

Publication number Publication date
DE69602269T2 (de) 1999-09-16
EP0840820B1 (fr) 1999-04-28
CA2227690A1 (fr) 1997-02-13
DE69602269D1 (de) 1999-06-02
EP0840820A1 (fr) 1998-05-13
JPH10510599A (ja) 1998-10-13
BR9609840A (pt) 1999-03-09
WO1997005327A1 (fr) 1997-02-13

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties