FR2655668B1 - PROCESS FOR BLEACHING CHEMICAL CELLULOSIC PASTA. - Google Patents

PROCESS FOR BLEACHING CHEMICAL CELLULOSIC PASTA.

Info

Publication number
FR2655668B1
FR2655668B1 FR8916322A FR8916322A FR2655668B1 FR 2655668 B1 FR2655668 B1 FR 2655668B1 FR 8916322 A FR8916322 A FR 8916322A FR 8916322 A FR8916322 A FR 8916322A FR 2655668 B1 FR2655668 B1 FR 2655668B1
Authority
FR
France
Prior art keywords
bleaching chemical
pasta
pulps
bleaching
chemical cellulosic
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 - Lifetime
Application number
FR8916322A
Other languages
French (fr)
Other versions
FR2655668A1 (en
Inventor
Siohan Alain
Doignie Jean-Claude
Pommier Jean-Claude
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.)
Cellulose du Pin SA
Original Assignee
Cellulose du Pin SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9388342&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2655668(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cellulose du Pin SA filed Critical Cellulose du Pin SA
Priority to FR8916322A priority Critical patent/FR2655668B1/en
Priority to EP90403462A priority patent/EP0433138B1/en
Priority to DE69011636T priority patent/DE69011636T2/en
Priority to DK90403462.6T priority patent/DK0433138T3/en
Priority to AT90403462T priority patent/ATE110129T1/en
Priority to ES90403462T priority patent/ES2062463T3/en
Priority to FI906076A priority patent/FI96784B/en
Priority to NO905333A priority patent/NO176809C/en
Publication of FR2655668A1 publication Critical patent/FR2655668A1/en
Publication of FR2655668B1 publication Critical patent/FR2655668B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Abstract

Process for bleaching chemical cellulose pulps with a view to obtaining absorbent, bleached pulps, without using chlorine. The process for bleaching chemical pulps employs a sequence of different treatments comprising at least one treatment with a bleaching agent not containing chlorine, at least two alkaline treatments and at least one acidic treatment, lasting at least 5 minutes, inserted between the two alkaline treatments.
FR8916322A 1989-12-11 1989-12-11 PROCESS FOR BLEACHING CHEMICAL CELLULOSIC PASTA. Expired - Lifetime FR2655668B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR8916322A FR2655668B1 (en) 1989-12-11 1989-12-11 PROCESS FOR BLEACHING CHEMICAL CELLULOSIC PASTA.
AT90403462T ATE110129T1 (en) 1989-12-11 1990-12-06 METHOD OF BLEACHING CHEMICAL PULP.
DE69011636T DE69011636T2 (en) 1989-12-11 1990-12-06 Process for bleaching chemical pulp.
DK90403462.6T DK0433138T3 (en) 1989-12-11 1990-12-06 Process for bleaching chemical cellulose fiber pulp
EP90403462A EP0433138B1 (en) 1989-12-11 1990-12-06 Process for bleaching chemical cellulose pulps
ES90403462T ES2062463T3 (en) 1989-12-11 1990-12-06 BLEACHING PROCEDURE FOR CHEMICAL CELLULOSIC PASTA.
FI906076A FI96784B (en) 1989-12-11 1990-12-10 A process for bleaching chemical cellulosic pulps to produce bleached absorbent pulps
NO905333A NO176809C (en) 1989-12-11 1990-12-10 Process for bleaching chemical cellulose pulp to obtain absorbent bleached pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8916322A FR2655668B1 (en) 1989-12-11 1989-12-11 PROCESS FOR BLEACHING CHEMICAL CELLULOSIC PASTA.

Publications (2)

Publication Number Publication Date
FR2655668A1 FR2655668A1 (en) 1991-06-14
FR2655668B1 true FR2655668B1 (en) 1995-06-09

Family

ID=9388342

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8916322A Expired - Lifetime FR2655668B1 (en) 1989-12-11 1989-12-11 PROCESS FOR BLEACHING CHEMICAL CELLULOSIC PASTA.

Country Status (8)

Country Link
EP (1) EP0433138B1 (en)
AT (1) ATE110129T1 (en)
DE (1) DE69011636T2 (en)
DK (1) DK0433138T3 (en)
ES (1) ES2062463T3 (en)
FI (1) FI96784B (en)
FR (1) FR2655668B1 (en)
NO (1) NO176809C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695947B1 (en) * 1992-09-18 1994-10-21 Saint Gobain Papier Bois Gie C Process for bleaching chemical cellulosic pastes.
FI925159A0 (en) * 1992-11-13 1992-11-13 Ahlstroem Oy FOERFARANDE FOER BLEKNING AV MASSA
SE9301960L (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
BE1007700A3 (en) * 1993-11-04 1995-10-03 Solvay Interox Method of laundering of chemical pulp.
FI944348A (en) * 1994-09-19 1996-03-20 Ahlstroem Oy Procedure for bleaching of pulp
SE502135C2 (en) * 1994-08-16 1995-08-28 Kvaerner Pulping Tech Chemical pulp bleaching sequence comprising a sulfonating bleaching step
WO1996025552A1 (en) * 1995-02-17 1996-08-22 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide
FI105701B (en) * 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Method and arrangement for treatment of pulp
WO1997027358A2 (en) * 1995-12-07 1997-07-31 Beloit Technologies, Inc. Oxygen delignification of medium consistency pulp slurry
DE102012009593B4 (en) 2012-05-07 2019-03-07 Innovent E.V. Process for the degradation of polysaccharides selected from the substance groups of the glycosaminoglycans and their derivatives and the alginates

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE448006B (en) * 1981-09-21 1987-01-12 Mo Och Domsjoe Ab PROCEDURE FOR WHITING CELLULOSAMASSA INCLUDING AN ACTIVATION STEP WITH NITROGEN OXIDES

Also Published As

Publication number Publication date
EP0433138B1 (en) 1994-08-17
ATE110129T1 (en) 1994-09-15
NO905333D0 (en) 1990-12-10
NO905333L (en) 1991-06-12
DK0433138T3 (en) 1994-12-05
ES2062463T3 (en) 1994-12-16
NO176809C (en) 1995-05-31
FI906076A (en) 1991-06-12
FR2655668A1 (en) 1991-06-14
FI96784B (en) 1996-05-15
NO176809B (en) 1995-02-20
DE69011636D1 (en) 1994-09-22
EP0433138A1 (en) 1991-06-19
DE69011636T2 (en) 1995-01-26
FI906076A0 (en) 1990-12-10

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