DE69406457D1 - Ozonbleichverfahren für zellstoff - Google Patents

Ozonbleichverfahren für zellstoff

Info

Publication number
DE69406457D1
DE69406457D1 DE69406457T DE69406457T DE69406457D1 DE 69406457 D1 DE69406457 D1 DE 69406457D1 DE 69406457 T DE69406457 T DE 69406457T DE 69406457 T DE69406457 T DE 69406457T DE 69406457 D1 DE69406457 D1 DE 69406457D1
Authority
DE
Germany
Prior art keywords
pulp
bleaching process
ozone bleaching
ozone
bleaching
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69406457T
Other languages
English (en)
Other versions
DE69406457T2 (de
Inventor
Christian Coste
Philippe Kalck
Sylvie Duprat
Jacques Molinier
Jian Xu
Jean-Pierre Zumbrunn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Suez International SAS
Original Assignee
Degremont SA
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Degremont SA, Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Degremont SA
Publication of DE69406457D1 publication Critical patent/DE69406457D1/de
Application granted granted Critical
Publication of DE69406457T2 publication Critical patent/DE69406457T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
DE69406457T 1993-07-21 1994-07-20 Ozonbleichverfahren für zellstoff Expired - Fee Related DE69406457T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9308967A FR2708010B1 (fr) 1993-07-21 1993-07-21 Procédé de blanchiment de pâtes à papier par l'ozone.
PCT/FR1994/000910 WO1995003448A1 (fr) 1993-07-21 1994-07-20 Procede de blanchiment de pates a papier par l'ozone

Publications (2)

Publication Number Publication Date
DE69406457D1 true DE69406457D1 (de) 1997-11-27
DE69406457T2 DE69406457T2 (de) 1998-02-19

Family

ID=9449467

Family Applications (2)

Application Number Title Priority Date Filing Date
DE0712453T Pending DE712453T1 (de) 1993-07-21 1994-07-20 Ozonbleichverfahren uvon zellstoff
DE69406457T Expired - Fee Related DE69406457T2 (de) 1993-07-21 1994-07-20 Ozonbleichverfahren für zellstoff

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE0712453T Pending DE712453T1 (de) 1993-07-21 1994-07-20 Ozonbleichverfahren uvon zellstoff

Country Status (9)

Country Link
EP (1) EP0712453B1 (de)
JP (1) JPH09505357A (de)
BR (1) BR9407083A (de)
CA (1) CA2167605A1 (de)
DE (2) DE712453T1 (de)
ES (1) ES2086272T3 (de)
FI (1) FI960297A (de)
FR (1) FR2708010B1 (de)
WO (1) WO1995003448A1 (de)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229252A (en) * 1979-01-11 1980-10-21 Weyerhaeuser Company Additives for ozone bleaching

Also Published As

Publication number Publication date
EP0712453B1 (de) 1997-10-22
ES2086272T3 (es) 1997-12-16
WO1995003448A1 (fr) 1995-02-02
DE712453T1 (de) 1996-10-24
FI960297A0 (fi) 1996-01-22
FI960297A (fi) 1996-01-22
JPH09505357A (ja) 1997-05-27
DE69406457T2 (de) 1998-02-19
CA2167605A1 (fr) 1995-02-02
ES2086272T1 (es) 1996-07-01
FR2708010B1 (fr) 1995-09-22
EP0712453A1 (de) 1996-05-22
FR2708010A1 (fr) 1995-01-27
BR9407083A (pt) 1996-08-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee