FR2572431B1 - PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING. - Google Patents

PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING.

Info

Publication number
FR2572431B1
FR2572431B1 FR8416518A FR8416518A FR2572431B1 FR 2572431 B1 FR2572431 B1 FR 2572431B1 FR 8416518 A FR8416518 A FR 8416518A FR 8416518 A FR8416518 A FR 8416518A FR 2572431 B1 FR2572431 B1 FR 2572431B1
Authority
FR
France
Prior art keywords
bleaching
preparation
paper pulp
chemical paper
pulp
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
Application number
FR8416518A
Other languages
French (fr)
Other versions
FR2572431A1 (en
Inventor
Dominique Lachenal
Christian De Choudens
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9309092&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2572431(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by CENTRE TECH IND PAPIER filed Critical CENTRE TECH IND PAPIER
Priority to FR8416518A priority Critical patent/FR2572431B1/en
Priority to DE8585420187T priority patent/DE3563548D1/en
Priority to AT85420187T priority patent/ATE35433T1/en
Priority to DE198585420187T priority patent/DE180529T1/en
Priority to EP85420187A priority patent/EP0180529B2/en
Priority to FI854148A priority patent/FI82726C/en
Priority to ES548166A priority patent/ES8606557A1/en
Priority to CA000493708A priority patent/CA1273755A/en
Priority to JP60239261A priority patent/JPS61102495A/en
Priority to AU49108/85A priority patent/AU576394B2/en
Publication of FR2572431A1 publication Critical patent/FR2572431A1/en
Publication of FR2572431B1 publication Critical patent/FR2572431B1/en
Application granted granted Critical
Expired 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Abstract

1. Process for preparing chemical paper pulps in order to bleach them, of the type in which the said pulp is treated with chlorine, then with at least one oxygen compound, characterized in that the pretreatment with chlorine is performed with a pulp having a consistency between 5 % and 15 %, at a temperature between 70 degrees C and 90 degrees C, with a chlorine concentration between 0.8 % and 1.5 % by weight with respect to the weight of the pulp.
FR8416518A 1984-10-25 1984-10-25 PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING. Expired FR2572431B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR8416518A FR2572431B1 (en) 1984-10-25 1984-10-25 PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING.
DE8585420187T DE3563548D1 (en) 1984-10-25 1985-10-22 Process for preparing chemical wood pulps with a view to bleaching
AT85420187T ATE35433T1 (en) 1984-10-25 1985-10-22 METHODS OF PREPARING CHEMICAL WOOD PULP FOR BLEACHING.
DE198585420187T DE180529T1 (en) 1984-10-25 1985-10-22 METHOD FOR PROVIDING CHEMICAL WOOD PULPS WITH REGARD TO THE BLEACHES.
EP85420187A EP0180529B2 (en) 1984-10-25 1985-10-22 Process for preparing chemical wood pulps with a view to bleaching
FI854148A FI82726C (en) 1984-10-25 1985-10-23 FOERFARANDE FOER FRAMSTAELLNING AV KEMISKA PAPPERSMASSOR FOER BLEKNING.
ES548166A ES8606557A1 (en) 1984-10-25 1985-10-24 Process for preparing chemical wood pulps with a view to bleaching.
CA000493708A CA1273755A (en) 1984-10-25 1985-10-24 Process for the preparation of chemical pulp prior to bleaching
JP60239261A JPS61102495A (en) 1984-10-25 1985-10-25 Production of chemical pulp by bleaching
AU49108/85A AU576394B2 (en) 1984-10-25 1985-10-25 Process for the preparation of chemical paper pulp for bleaching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8416518A FR2572431B1 (en) 1984-10-25 1984-10-25 PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING.

Publications (2)

Publication Number Publication Date
FR2572431A1 FR2572431A1 (en) 1986-05-02
FR2572431B1 true FR2572431B1 (en) 1987-12-04

Family

ID=9309092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8416518A Expired FR2572431B1 (en) 1984-10-25 1984-10-25 PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING.

Country Status (9)

Country Link
EP (1) EP0180529B2 (en)
JP (1) JPS61102495A (en)
AT (1) ATE35433T1 (en)
AU (1) AU576394B2 (en)
CA (1) CA1273755A (en)
DE (2) DE180529T1 (en)
ES (1) ES8606557A1 (en)
FI (1) FI82726C (en)
FR (1) FR2572431B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1544216A (en) * 1921-08-11 1925-06-30 Donald J Campbell Molding apparatus
GB1262655A (en) * 1968-09-20 1972-02-02 Canadian Ind Bleaching of wood pulp
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
DE2538673C2 (en) * 1975-08-30 1986-01-16 Degussa Ag, 6000 Frankfurt Bleaching of cellulose with considerably reduced use of chlorine
US4402788A (en) * 1982-04-26 1983-09-06 Champion International Corporation Process for bleaching wood pulp with hydrogen peroxide

Also Published As

Publication number Publication date
CA1273755A (en) 1990-09-11
ES548166A0 (en) 1986-04-01
EP0180529B2 (en) 1992-04-08
FR2572431A1 (en) 1986-05-02
FI854148L (en) 1986-04-26
DE180529T1 (en) 1986-12-18
EP0180529B1 (en) 1988-06-29
FI854148A0 (en) 1985-10-23
DE3563548D1 (en) 1988-08-04
EP0180529A1 (en) 1986-05-07
JPS61102495A (en) 1986-05-21
AU4910885A (en) 1986-05-29
FI82726C (en) 1991-04-10
FI82726B (en) 1990-12-31
ATE35433T1 (en) 1988-07-15
ES8606557A1 (en) 1986-04-01
AU576394B2 (en) 1988-08-25

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Legal Events

Date Code Title Description
ST Notification of lapse