FI920831L - Foerfarande foer delignifiering av cellulosahaltiga raomaterialer - Google Patents

Foerfarande foer delignifiering av cellulosahaltiga raomaterialer Download PDF

Info

Publication number: FI920831L
Authority: FI; Finland
Prior art keywords: raomaterialer; cellulosahaltiga; foerfarande foer; delignifiering; foer delignifiering
Prior art date: 1991-03-08

Application number

FI920831A

Other languages

English (en)

Other versions

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.)

1991-03-08

Filing date

1992-02-25

Publication date

1992-09-09

1992-02-25 Application filed by Acetocell Gmbh & Co Kg filed Critical Acetocell Gmbh & Co Kg

1992-02-25 Publication of FI920831A0 publication Critical patent/FI920831A0/fi

1992-09-09 Publication of FI920831L publication Critical patent/FI920831L/fi

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 (fi)	1991-03-08	1991-03-08

Publications (2)

Publication Number	Publication Date
FI920831A0 FI920831A0 (fi)	1992-02-25
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 (fi)
CA (1)	CA2062475A1 (fi)
DE (1)	DE4107357C1 (fi)
FI (1)	FI920831L (fi)
NO (1)	NO920830L (fi)

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 (fi) *	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
EP0325890B1 (de) *	1988-01-25	1993-06-09	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

1991
- 1991-03-08 DE DE4107357A patent/DE4107357C1/de not_active Expired - Lifetime
1992
- 1992-02-14 EP EP92102470A patent/EP0503304A1/de not_active Withdrawn
- 1992-02-25 FI FI920831A patent/FI920831L/fi not_active Application Discontinuation
- 1992-03-03 NO NO92920830A patent/NO920830L/no unknown
- 1992-03-06 CA CA002062475A patent/CA2062475A1/en not_active Abandoned

Also Published As

Publication number	Publication date
DE4107357C1 (fi)	1992-11-05
NO920830D0 (no)	1992-03-03
FI920831A0 (fi)	1992-02-25
NO920830L (no)	1992-09-09
CA2062475A1 (en)	1992-09-09
EP0503304A1 (de)	1992-09-16

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Legal Events

Date	Code	Title	Description
1996-09-10	FD	Application lapsed