FI920831L - Foerfarande foer delignifiering av cellulosahaltiga raomaterialer - Google Patents

Foerfarande foer delignifiering av cellulosahaltiga raomaterialer Download PDF

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Publication number
FI920831L
FI920831L FI920831A FI920831A FI920831L FI 920831 L FI920831 L FI 920831L FI 920831 A FI920831 A FI 920831A FI 920831 A FI920831 A FI 920831A FI 920831 L FI920831 L FI 920831L
Authority
FI
Finland
Prior art keywords
raomaterialer
cellulosahaltiga
foerfarande foer
delignifiering
foer delignifiering
Prior art date
Application number
FI920831A
Other languages
English (en)
Finnish (fi)
Other versions
FI920831A7 (fi
FI920831A0 (fi
Inventor
Horst Nimz
Alex Berg
Wim Janssen
Stefan Balle
Rudolf Gustav Kuollut-Avl Kunz
Wolfdieter Klein
Original Assignee
Acetocell Gmbh & 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 & Co Kg filed Critical Acetocell Gmbh & Co Kg
Publication of FI920831A0 publication Critical patent/FI920831A0/fi
Publication of FI920831A7 publication Critical patent/FI920831A7/fi
Publication of FI920831L publication Critical patent/FI920831L/fi

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
    • D21C9/1005—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
    • 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
    • D21C9/147—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)
FI920831A 1991-03-08 1992-02-25 Foerfarande foer delignifiering av cellulosahaltiga raomaterialer FI920831L (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4107357A DE4107357C1 (enExample) 1991-03-08 1991-03-08

Publications (3)

Publication Number Publication Date
FI920831A0 FI920831A0 (fi) 1992-02-25
FI920831A7 FI920831A7 (fi) 1992-09-09
FI920831L true FI920831L (fi) 1992-09-09

Family

ID=6426711

Family Applications (1)

Application Number Title Priority Date Filing Date
FI920831A FI920831L (fi) 1991-03-08 1992-02-25 Foerfarande foer delignifiering av cellulosahaltiga raomaterialer

Country Status (5)

Country Link
EP (1) EP0503304A1 (enExample)
CA (1) CA2062475A1 (enExample)
DE (1) DE4107357C1 (enExample)
FI (1) FI920831L (enExample)
NO (1) NO920830L (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228171C2 (de) * 1992-08-25 1995-06-14 Kaemmerer Projekt Agentur Gmbh Verfahren zur Gewinnung von Zellstoffen
US6302997B1 (en) * 1999-08-30 2001-10-16 North Carolina State University Process for producing a pulp suitable for papermaking from nonwood fibrous materials
DE19962411A1 (de) * 1999-12-22 2001-07-05 Natural Pulping Ag Verfahren zur Gewinnung/Rückgewinnung von Carbonsäuren aus Ablaugen der Zellstoffherstellung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309551C (enExample) * 1916-01-14
AT83396B (de) * 1916-06-19 1921-03-25 Hermann Pauly Dr Verfahren zur Gewinnung der das sogenannte Lignin bildenden Stoffe aus zellulosehaltigen Materialien.
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
DE3445132A1 (de) * 1984-12-11 1986-06-12 Nimz, Horst H., Prof.Dr., 2050 Hamburg Holzaufschluss mit essigsaeure
DE3881676D1 (de) * 1988-01-25 1993-07-15 Acetocell Gmbh & Co Kg Verfahren zur behandlung von lignin enthaltender cellulosemasse mit ozon.
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
CA2062475A1 (en) 1992-09-09
EP0503304A1 (de) 1992-09-16
NO920830D0 (no) 1992-03-03
NO920830L (no) 1992-09-09
DE4107357C1 (enExample) 1992-11-05
FI920831A7 (fi) 1992-09-09
FI920831A0 (fi) 1992-02-25

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Legal Events

Date Code Title Description
FD Application lapsed