DE59204715D1 - Verfahren zum Bleichen von Zellstoffen in aliphatischen Monocarbonsäuren - Google Patents

Verfahren zum Bleichen von Zellstoffen in aliphatischen Monocarbonsäuren

Info

Publication number
DE59204715D1
DE59204715D1 DE59204715T DE59204715T DE59204715D1 DE 59204715 D1 DE59204715 D1 DE 59204715D1 DE 59204715 T DE59204715 T DE 59204715T DE 59204715 T DE59204715 T DE 59204715T DE 59204715 D1 DE59204715 D1 DE 59204715D1
Authority
DE
Germany
Prior art keywords
monocarboxylic acids
aliphatic monocarboxylic
bleaching
stage
pulps
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
DE59204715T
Other languages
English (en)
Inventor
Alex Dr Dipl Chem Ing Berg
Wim Dipl Ing Janssen
Stefan Dipl Ing Balle
Rudolf Gustav Dr Kunz
Wolf-Dieter Dipl Ing Klein
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.)
Acetocell GmbH and Co KG
Original Assignee
Acetocell GmbH and Co KG
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 Acetocell GmbH and Co KG filed Critical Acetocell GmbH and Co KG
Application granted granted Critical
Publication of DE59204715D1 publication Critical patent/DE59204715D1/de
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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/003—Pulping cellulose-containing materials with organic compounds
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • External Artificial Organs (AREA)
DE59204715T 1991-03-08 1992-02-14 Verfahren zum Bleichen von Zellstoffen in aliphatischen Monocarbonsäuren Expired - Fee Related DE59204715D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4107356A DE4107356C1 (de) 1991-03-08 1991-03-08

Publications (1)

Publication Number Publication Date
DE59204715D1 true DE59204715D1 (de) 1996-02-01

Family

ID=6426710

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4107356A Expired - Lifetime DE4107356C1 (de) 1991-03-08 1991-03-08
DE59204715T Expired - Fee Related DE59204715D1 (de) 1991-03-08 1992-02-14 Verfahren zum Bleichen von Zellstoffen in aliphatischen Monocarbonsäuren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4107356A Expired - Lifetime DE4107356C1 (de) 1991-03-08 1991-03-08

Country Status (6)

Country Link
EP (1) EP0503303B1 (de)
AT (1) ATE131886T1 (de)
CA (1) CA2062325A1 (de)
DE (2) DE4107356C1 (de)
FI (1) FI920832A (de)
NO (1) NO920829L (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183643A (en) * 1936-05-05 1939-12-19 Manufacture of cellulose
GB579669A (en) * 1943-11-05 1946-08-12 Stanley Charles Bate Improvements in or relating to the production of cellulose
US3553076A (en) * 1968-01-22 1971-01-05 Weyerhaeuser Co Non-catalytic process for the production of cellulose from lignocellulosic materials using acetic acid
DE3118384C1 (de) * 1981-05-09 1982-11-11 Mannesmann AG, 4000 Düsseldorf Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon
DE3445132A1 (de) * 1984-12-11 1986-06-12 Nimz, Horst H., Prof.Dr., 2050 Hamburg Holzaufschluss mit essigsaeure
EP0325891A1 (de) * 1988-01-25 1989-08-02 Kunz Holding Gmbh & Co. Kg Verfahren zur Gewinnung von gebleichtem Zellstoff

Also Published As

Publication number Publication date
NO920829L (no) 1992-09-09
NO920829D0 (no) 1992-03-03
ATE131886T1 (de) 1996-01-15
EP0503303B1 (de) 1995-12-20
FI920832A (fi) 1992-09-09
FI920832A0 (fi) 1992-02-25
EP0503303A1 (de) 1992-09-16
DE4107356C1 (de) 1992-11-05
CA2062325A1 (en) 1992-09-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee