ATE253661T1 - Schwefelwasserstoff-vorbehandlung von lignocellulosematerial bei kontinuierlichen aufschlussverfahren - Google Patents

Schwefelwasserstoff-vorbehandlung von lignocellulosematerial bei kontinuierlichen aufschlussverfahren

Info

Publication number
ATE253661T1
ATE253661T1 AT97922238T AT97922238T ATE253661T1 AT E253661 T1 ATE253661 T1 AT E253661T1 AT 97922238 T AT97922238 T AT 97922238T AT 97922238 T AT97922238 T AT 97922238T AT E253661 T1 ATE253661 T1 AT E253661T1
Authority
AT
Austria
Prior art keywords
alkali metal
undigested
fiber material
cellulosic fiber
pretreatment
Prior art date
Application number
AT97922238T
Other languages
English (en)
Inventor
Bengt Nilsson
Original Assignee
Chemrec Ab
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 Chemrec Ab filed Critical Chemrec Ab
Application granted granted Critical
Publication of ATE253661T1 publication Critical patent/ATE253661T1/de

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/10—Physical methods for facilitating impregnation
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • D21C11/0071—Treatment of green or white liquors with gases, e.g. with carbon dioxide for carbonation; Expulsion of gaseous compounds, e.g. hydrogen sulfide, from these liquors by this treatment (stripping); Optional separation of solid compounds formed in the liquors by this treatment
    • 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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Glass Compositions (AREA)
AT97922238T 1996-04-30 1997-04-24 Schwefelwasserstoff-vorbehandlung von lignocellulosematerial bei kontinuierlichen aufschlussverfahren ATE253661T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9601643A SE506702C2 (sv) 1996-04-30 1996-04-30 Förbehandling av fibermaterial med in situ bildad vätesulfid
PCT/SE1997/000686 WO1997041294A1 (en) 1996-04-30 1997-04-24 Hydrogen sulphide pretreatment of lignocellulosic material in continuous pulping processes

Publications (1)

Publication Number Publication Date
ATE253661T1 true ATE253661T1 (de) 2003-11-15

Family

ID=20402396

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97922238T ATE253661T1 (de) 1996-04-30 1997-04-24 Schwefelwasserstoff-vorbehandlung von lignocellulosematerial bei kontinuierlichen aufschlussverfahren

Country Status (9)

Country Link
US (1) US5976321A (de)
EP (1) EP0896648B1 (de)
JP (1) JP2000509115A (de)
AT (1) ATE253661T1 (de)
BR (1) BR9709122A (de)
CA (1) CA2253301C (de)
DE (1) DE69725976D1 (de)
SE (1) SE506702C2 (de)
WO (1) WO1997041294A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9703365D0 (sv) * 1997-09-18 1997-09-18 Kvaerner Pulping Tech Method in connection with impregnation and digestion of lignocelulosic material
WO1999014423A1 (en) * 1997-09-18 1999-03-25 Kvaerner Pulping Ab Polysulfide pulping process
SE518993E (sv) * 2002-01-24 2013-04-23 Metso Paper Sweden Ab Framställning av cellulosamassa genom kokning med en kokvätska innehållande förindunstad svartlut
SE525065C2 (sv) * 2003-04-17 2004-11-23 Kvaerner Pulping Tech Förbehandling av flis med sur vätska vid ångbasning
SE525064C2 (sv) * 2003-04-17 2004-11-23 Kvaerner Pulping Tech Metod för impregnering av flis med sur behandlingsvätska i samband med sulfatkokning av cellulosamassa
US20050076568A1 (en) * 2003-10-09 2005-04-14 Stigsson Lars Lennart Partial oxidation of cellulose spent pulping liquor
WO2010060052A2 (en) * 2008-11-21 2010-05-27 North Carolina State University Production of ethanol from lignocellulosic biomass using green liquor pretreatment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841962A (en) * 1972-07-31 1974-10-15 Mac Millan Bloedel Ltd Hydrogen sulfide pretreatment of lignocellulosic materials in alkaline pulping processes
SE407244B (sv) * 1976-02-05 1979-03-19 Mo Och Domsjoe Ab Forfarande for framstellning av cellulosamassa av lovved i tva steg
SE9103707L (sv) * 1991-12-16 1993-02-15 Chemrec Ab Saett att framstaella koklut med hoeg sulfiditet

Also Published As

Publication number Publication date
CA2253301A1 (en) 1997-11-06
BR9709122A (pt) 1999-08-03
SE506702C2 (sv) 1998-02-02
SE9601643L (sv) 1997-10-31
WO1997041294A1 (en) 1997-11-06
US5976321A (en) 1999-11-02
EP0896648A1 (de) 1999-02-17
SE9601643D0 (sv) 1996-04-30
EP0896648B1 (de) 2003-11-05
JP2000509115A (ja) 2000-07-18
CA2253301C (en) 2008-01-29
DE69725976D1 (de) 2003-12-11

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties