SE9601643L - Förbehandling av fibermaterial med in situ bildad vätesulfid - Google Patents

Förbehandling av fibermaterial med in situ bildad vätesulfid

Info

Publication number
SE9601643L
SE9601643L SE9601643A SE9601643A SE9601643L SE 9601643 L SE9601643 L SE 9601643L SE 9601643 A SE9601643 A SE 9601643A SE 9601643 A SE9601643 A SE 9601643A SE 9601643 L SE9601643 L SE 9601643L
Authority
SE
Sweden
Prior art keywords
fiber material
alkali metal
undigested
cellulosic fiber
treatment
Prior art date
Application number
SE9601643A
Other languages
English (en)
Swedish (sv)
Other versions
SE9601643D0 (sv
SE506702C2 (sv
Inventor
Bengt Nilsson
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE9601643A priority Critical patent/SE506702C2/sv
Publication of SE9601643D0 publication Critical patent/SE9601643D0/xx
Priority to CA002253301A priority patent/CA2253301C/en
Priority to PCT/SE1997/000686 priority patent/WO1997041294A1/en
Priority to DE69725976T priority patent/DE69725976D1/de
Priority to AT97922238T priority patent/ATE253661T1/de
Priority to BR9709122A priority patent/BR9709122A/pt
Priority to EP97922238A priority patent/EP0896648B1/en
Priority to JP9538802A priority patent/JP2000509115A/ja
Priority to US08/960,271 priority patent/US5976321A/en
Publication of SE9601643L publication Critical patent/SE9601643L/
Publication of SE506702C2 publication Critical patent/SE506702C2/sv

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)
SE9601643A 1996-04-30 1996-04-30 Förbehandling av fibermaterial med in situ bildad vätesulfid SE506702C2 (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE9601643A SE506702C2 (sv) 1996-04-30 1996-04-30 Förbehandling av fibermaterial med in situ bildad vätesulfid
JP9538802A JP2000509115A (ja) 1996-04-30 1997-04-24 製紙用パルプの製造方法
AT97922238T ATE253661T1 (de) 1996-04-30 1997-04-24 Schwefelwasserstoff-vorbehandlung von lignocellulosematerial bei kontinuierlichen aufschlussverfahren
PCT/SE1997/000686 WO1997041294A1 (en) 1996-04-30 1997-04-24 Hydrogen sulphide pretreatment of lignocellulosic material in continuous pulping processes
DE69725976T DE69725976D1 (de) 1996-04-30 1997-04-24 Schwefelwasserstoff-vorbehandlung von lignocellulosematerial bei kontinuierlichen aufschlussverfahren
CA002253301A CA2253301C (en) 1996-04-30 1997-04-24 Hydrogen sulphide pretreatment of lignocellulosic material in continuous pulping processes
BR9709122A BR9709122A (pt) 1996-04-30 1997-04-24 Pretamento de sulfeto de hidrogênio de material lignocelulosico em processos continuo de produção de polpa
EP97922238A EP0896648B1 (en) 1996-04-30 1997-04-24 Hydrogen sulphide pretreatment of lignocellulosic material in continuous pulping processes
US08/960,271 US5976321A (en) 1996-04-30 1997-10-29 Process for making sulfur enhanced undigested cellulosic fiber material and pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9601643A SE506702C2 (sv) 1996-04-30 1996-04-30 Förbehandling av fibermaterial med in situ bildad vätesulfid

Publications (3)

Publication Number Publication Date
SE9601643D0 SE9601643D0 (sv) 1996-04-30
SE9601643L true SE9601643L (sv) 1997-10-31
SE506702C2 SE506702C2 (sv) 1998-02-02

Family

ID=20402396

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9601643A SE506702C2 (sv) 1996-04-30 1996-04-30 Förbehandling av fibermaterial med in situ bildad vätesulfid

Country Status (9)

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

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
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
SE525065C2 (sv) * 2003-04-17 2004-11-23 Kvaerner Pulping Tech Förbehandling av flis med sur vätska vid ångbasning
US20050076568A1 (en) * 2003-10-09 2005-04-14 Stigsson Lars Lennart Partial oxidation of cellulose spent pulping liquor
US20110314726A1 (en) * 2008-11-21 2011-12-29 Hasan Jameel 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
SE468600B (sv) * 1991-12-16 1993-02-15 Chemrec Ab Saett att framstaella koklut med hoeg sulfiditet

Also Published As

Publication number Publication date
WO1997041294A1 (en) 1997-11-06
EP0896648A1 (en) 1999-02-17
SE9601643D0 (sv) 1996-04-30
CA2253301A1 (en) 1997-11-06
EP0896648B1 (en) 2003-11-05
US5976321A (en) 1999-11-02
CA2253301C (en) 2008-01-29
BR9709122A (pt) 1999-08-03
DE69725976D1 (de) 2003-12-11
ATE253661T1 (de) 2003-11-15
SE506702C2 (sv) 1998-02-02
JP2000509115A (ja) 2000-07-18

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Legal Events

Date Code Title Description
NUG Patent has lapsed