EP0180529B1 - Verfahren zur Bereitstellung von chemischen Holzpulpen hinsichtlich der Bleiche - Google Patents

Verfahren zur Bereitstellung von chemischen Holzpulpen hinsichtlich der Bleiche Download PDF

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Publication number
EP0180529B1
EP0180529B1 EP85420187A EP85420187A EP0180529B1 EP 0180529 B1 EP0180529 B1 EP 0180529B1 EP 85420187 A EP85420187 A EP 85420187A EP 85420187 A EP85420187 A EP 85420187A EP 0180529 B1 EP0180529 B1 EP 0180529B1
Authority
EP
European Patent Office
Prior art keywords
chlorine
pulp
oxygen
treatment
temperature
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
EP85420187A
Other languages
English (en)
French (fr)
Other versions
EP0180529A1 (de
EP0180529B2 (de
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 Technique De L'industrie Des Papiers Car
Arkema France SA
Original Assignee
Atochem SA
Elf Atochem SA
Centre Technique de lIndustrie des Papiers Cartons et Celluloses
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=EP0180529(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atochem SA, Elf Atochem SA, Centre Technique de lIndustrie des Papiers Cartons et Celluloses filed Critical Atochem SA
Priority to AT85420187T priority Critical patent/ATE35433T1/de
Publication of EP0180529A1 publication Critical patent/EP0180529A1/de
Application granted granted Critical
Publication of EP0180529B1 publication Critical patent/EP0180529B1/de
Publication of EP0180529B2 publication Critical patent/EP0180529B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)

Claims (5)

1. Verfahren zur Herstellung von chemischen Papiermassen im Hinblick auf ihre Bleichung des Typs, bei dem die Masse mit Chlor und danach mit einer sauerstoffhaltigen Verbindung behandelt wird, dadurch gekennzeichnet, daß man die Vorbehandlung mit Chlor auf eine Masse mit einer Konsistenz zwischen 5 und 15 % bei einer Temperatur zwischen 70° und 90°C mit einer Chlorkonzentration zwischen 0,8 und 1,5 Gew.-% bezogen auf das Gewicht der Masse einwirken läßt.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Dauer der Vorbehandlung mit Chlor zwischen 5 und 30 Minuten, vorzugsweise zwischen 10 und 20 Minuten beträgt.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß während der Vorbehandlung mit Chlor die Konsistenz der Masse zwischen 8 und 12 % liegt.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die sauerstoffhaltige Verbindung Sauerstoff selbst ist.
5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die sauerstoffhaltige Verbindung Wasserstoffperoxid ist, welches man bei einer Temperatur um 120°C reagieren läßt.
EP85420187A 1984-10-25 1985-10-22 Verfahren zur Bereitstellung von chemischen Holzpulpen hinsichtlich der Bleiche Expired - Lifetime EP0180529B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85420187T ATE35433T1 (de) 1984-10-25 1985-10-22 Verfahren zur bereitstellung von chemischen holzpulpen hinsichtlich der bleiche.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416518 1984-10-25
FR8416518A FR2572431B1 (fr) 1984-10-25 1984-10-25 Procede pour la preparation des pates papetieres chimiques en vue du blanchiment.

Publications (3)

Publication Number Publication Date
EP0180529A1 EP0180529A1 (de) 1986-05-07
EP0180529B1 true EP0180529B1 (de) 1988-06-29
EP0180529B2 EP0180529B2 (de) 1992-04-08

Family

ID=9309092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85420187A Expired - Lifetime EP0180529B2 (de) 1984-10-25 1985-10-22 Verfahren zur Bereitstellung von chemischen Holzpulpen hinsichtlich der Bleiche

Country Status (9)

Country Link
EP (1) EP0180529B2 (de)
JP (1) JPS61102495A (de)
AT (1) ATE35433T1 (de)
AU (1) AU576394B2 (de)
CA (1) CA1273755A (de)
DE (2) DE3563548D1 (de)
ES (1) ES8606557A1 (de)
FI (1) FI82726C (de)
FR (1) FR2572431B1 (de)

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 (de) * 1975-08-30 1986-01-16 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
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
ES8606557A1 (es) 1986-04-01
FI854148A0 (fi) 1985-10-23
DE180529T1 (de) 1986-12-18
EP0180529A1 (de) 1986-05-07
AU576394B2 (en) 1988-08-25
ATE35433T1 (de) 1988-07-15
FI82726B (fi) 1990-12-31
ES548166A0 (es) 1986-04-01
EP0180529B2 (de) 1992-04-08
DE3563548D1 (en) 1988-08-04
FR2572431B1 (fr) 1987-12-04
JPS61102495A (ja) 1986-05-21
FI854148L (fi) 1986-04-26
AU4910885A (en) 1986-05-29
CA1273755A (fr) 1990-09-11
FI82726C (fi) 1991-04-10
FR2572431A1 (fr) 1986-05-02

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