FR2670513B1 - PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT. - Google Patents

PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT.

Info

Publication number
FR2670513B1
FR2670513B1 FR9016202A FR9016202A FR2670513B1 FR 2670513 B1 FR2670513 B1 FR 2670513B1 FR 9016202 A FR9016202 A FR 9016202A FR 9016202 A FR9016202 A FR 9016202A FR 2670513 B1 FR2670513 B1 FR 2670513B1
Authority
FR
France
Prior art keywords
paper pulp
oxygen treatment
bleaching chemical
stage oxygen
chemical paper
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
FR9016202A
Other languages
French (fr)
Other versions
FR2670513A1 (en
Inventor
Lachenal Dominique
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.)
CENTRE TECH IND PAPIER
Original Assignee
CENTRE TECH IND PAPIER
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 CENTRE TECH IND PAPIER filed Critical CENTRE TECH IND PAPIER
Priority to FR9016202A priority Critical patent/FR2670513B1/en
Priority to CA002067720A priority patent/CA2067720A1/en
Publication of FR2670513A1 publication Critical patent/FR2670513A1/en
Application granted granted Critical
Publication of FR2670513B1 publication Critical patent/FR2670513B1/en
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
    • 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)
  • Detergent Compositions (AREA)
FR9016202A 1990-12-18 1990-12-18 PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT. Expired - Fee Related FR2670513B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9016202A FR2670513B1 (en) 1990-12-18 1990-12-18 PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT.
CA002067720A CA2067720A1 (en) 1990-12-18 1992-04-30 Process for enhancing paper pulp bleaching using ozone, and pulp thus treated

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9016202A FR2670513B1 (en) 1990-12-18 1990-12-18 PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT.
CA002067720A CA2067720A1 (en) 1990-12-18 1992-04-30 Process for enhancing paper pulp bleaching using ozone, and pulp thus treated

Publications (2)

Publication Number Publication Date
FR2670513A1 FR2670513A1 (en) 1992-06-19
FR2670513B1 true FR2670513B1 (en) 1993-02-19

Family

ID=25675119

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9016202A Expired - Fee Related FR2670513B1 (en) 1990-12-18 1990-12-18 PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT.

Country Status (2)

Country Link
CA (1) CA2067720A1 (en)
FR (1) FR2670513B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949309A1 (en) * 1998-04-06 1999-10-13 Akzo Nobel N.V. A method of joining surfaces

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA897361A (en) * 1969-12-19 1972-04-11 E. Mallett Samuel Oxygen bleaching process

Also Published As

Publication number Publication date
FR2670513A1 (en) 1992-06-19
CA2067720A1 (en) 1993-10-31

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20081020