DE69011636D1 - Verfahren zum Bleichen von chemischen Zellstoffen. - Google Patents

Verfahren zum Bleichen von chemischen Zellstoffen.

Info

Publication number
DE69011636D1
DE69011636D1 DE69011636T DE69011636T DE69011636D1 DE 69011636 D1 DE69011636 D1 DE 69011636D1 DE 69011636 T DE69011636 T DE 69011636T DE 69011636 T DE69011636 T DE 69011636T DE 69011636 D1 DE69011636 D1 DE 69011636D1
Authority
DE
Germany
Prior art keywords
bleaching chemical
chemical pulp
pulps
bleaching
treatments
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
DE69011636T
Other languages
English (en)
Other versions
DE69011636T2 (de
Inventor
Alain M Siohan
Jean-Claude M Doignie
Jean-Claude M Pommier
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=DE69011636(D1) "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
Publication of DE69011636D1 publication Critical patent/DE69011636D1/de
Application granted granted Critical
Publication of DE69011636T2 publication Critical patent/DE69011636T2/de
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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Noodles (AREA)
DE69011636T 1989-12-11 1990-12-06 Verfahren zum Bleichen von chemischen Zellstoffen. Expired - Lifetime DE69011636T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8916322A FR2655668B1 (fr) 1989-12-11 1989-12-11 Procede de blanchiment de pates cellulosiques chimiques.

Publications (2)

Publication Number Publication Date
DE69011636D1 true DE69011636D1 (de) 1994-09-22
DE69011636T2 DE69011636T2 (de) 1995-01-26

Family

ID=9388342

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69011636T Expired - Lifetime DE69011636T2 (de) 1989-12-11 1990-12-06 Verfahren zum Bleichen von chemischen Zellstoffen.

Country Status (8)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695947B1 (fr) * 1992-09-18 1994-10-21 Saint Gobain Papier Bois Gie C Procédé de blanchiment de pâtes cellulosiques chimiques.
FI925159A0 (fi) * 1992-11-13 1992-11-13 Ahlstroem Oy Foerfarande foer blekning av massa
SE500616C2 (sv) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Blekning av kemisk massa med peroxid vid övertryck
BE1007700A3 (fr) * 1993-11-04 1995-10-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
FI944348A (fi) * 1994-09-19 1996-03-20 Ahlstroem Oy Menetelmä kraft-massan valkaisemiseksi
SE9402726L (sv) * 1994-08-16 1995-08-28 Kvaerner Pulping Tech Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg
EP0858526A1 (de) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Verfahren zur vorbehandlung eines für peroxidbleichung bestimmten zellstoffes
FI105701B (fi) * 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi
WO1997027358A2 (en) * 1995-12-07 1997-07-31 Beloit Technologies, Inc. Oxygen delignification of medium consistency pulp slurry
DE102012009593B4 (de) 2012-05-07 2019-03-07 Innovent E.V. Verfahren zum Abbau von Polysacchariden ausgewählt aus den Stoffgruppen der Glykosaminoglykane und deren Derivaten sowie der Alginate
EP4165243A1 (de) * 2020-06-16 2023-04-19 Kemira OYJ Verfahren zur pechkontrolle während des bleichens

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE448006B (sv) * 1981-09-21 1987-01-12 Mo Och Domsjoe Ab Forfarande for blekning av cellulosamassa innefattande ett aktiveringssteg med kveveoxider

Also Published As

Publication number Publication date
NO905333L (no) 1991-06-12
EP0433138B1 (de) 1994-08-17
FI906076A0 (fi) 1990-12-10
FR2655668B1 (fr) 1995-06-09
NO905333D0 (no) 1990-12-10
FI96784B (fi) 1996-05-15
FI906076A (fi) 1991-06-12
DK0433138T3 (da) 1994-12-05
ES2062463T3 (es) 1994-12-16
DE69011636T2 (de) 1995-01-26
FR2655668A1 (fr) 1991-06-14
EP0433138A1 (de) 1991-06-19
NO176809B (no) 1995-02-20
ATE110129T1 (de) 1994-09-15
NO176809C (no) 1995-05-31

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8328 Change in the person/name/address of the agent

Representative=s name: GROSSE, BOCKHORNI, SCHUMACHER, 81476 MUENCHEN

8328 Change in the person/name/address of the agent

Representative=s name: BOCKHORNI & KOLLEGEN, 80687 MUENCHEN