BR9407083A - Process for bleaching raw chemical pulp with the help of ozone - Google Patents

Process for bleaching raw chemical pulp with the help of ozone

Info

Publication number
BR9407083A
BR9407083A BR9407083A BR9407083A BR9407083A BR 9407083 A BR9407083 A BR 9407083A BR 9407083 A BR9407083 A BR 9407083A BR 9407083 A BR9407083 A BR 9407083A BR 9407083 A BR9407083 A BR 9407083A
Authority
BR
Brazil
Prior art keywords
ozone
help
chemical pulp
raw chemical
bleaching raw
Prior art date
Application number
BR9407083A
Other languages
Portuguese (pt)
Inventor
Christian Coste
Philippe Kalck
Sylvie Duprat
Jacques Molinier
Jain Xu
Jean-Pierre Zumbrunn
Original Assignee
Degremont
Air Liquide
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, Air Liquide filed Critical Degremont
Publication of BR9407083A publication Critical patent/BR9407083A/en

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)
BR9407083A 1993-07-21 1994-07-20 Process for bleaching raw chemical pulp with the help of ozone BR9407083A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9308967A FR2708010B1 (en) 1993-07-21 1993-07-21 Process for bleaching paper pulps with ozone.
PCT/FR1994/000910 WO1995003448A1 (en) 1993-07-21 1994-07-20 Method for ozone bleaching paper pulp

Publications (1)

Publication Number Publication Date
BR9407083A true BR9407083A (en) 1996-08-13

Family

ID=9449467

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9407083A BR9407083A (en) 1993-07-21 1994-07-20 Process for bleaching raw chemical pulp with the help of ozone

Country Status (9)

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

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
FI960297A0 (en) 1996-01-22
DE69406457D1 (en) 1997-11-27
FR2708010B1 (en) 1995-09-22
WO1995003448A1 (en) 1995-02-02
FI960297A (en) 1996-01-22
DE712453T1 (en) 1996-10-24
FR2708010A1 (en) 1995-01-27
DE69406457T2 (en) 1998-02-19
ES2086272T1 (en) 1996-07-01
ES2086272T3 (en) 1997-12-16
EP0712453B1 (en) 1997-10-22
JPH09505357A (en) 1997-05-27
EP0712453A1 (en) 1996-05-22
CA2167605A1 (en) 1995-02-02

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FA11 Dismissal: dismissal - article 38, par. 2 of industrial property law