FI970197A0 - Tvåstegssulfatkokningsförfarande - Google Patents

Tvåstegssulfatkokningsförfarande

Info

Publication number
FI970197A0
FI970197A0 FI970197A FI970197A FI970197A0 FI 970197 A0 FI970197 A0 FI 970197A0 FI 970197 A FI970197 A FI 970197A FI 970197 A FI970197 A FI 970197A FI 970197 A0 FI970197 A0 FI 970197A0
Authority
FI
Finland
Prior art keywords
tvåstegssulfatkokningsförfarande
Prior art date
Application number
FI970197A
Other languages
English (en)
Finnish (fi)
Other versions
FI970197A (sv
Inventor
Jian Li
Original Assignee
Pulp Paper Res Inst
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 Pulp Paper Res Inst filed Critical Pulp Paper Res Inst
Publication of FI970197A0 publication Critical patent/FI970197A0/sv
Publication of FI970197A publication Critical patent/FI970197A/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
    • 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
    • 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
    • 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
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
FI970197A 1994-07-18 1997-01-17 Tvåstegssulfatkokningsförfarande FI970197A (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/276,804 US5522958A (en) 1994-07-18 1994-07-18 Two-stage kraft cooking
PCT/CA1995/000426 WO1996002698A1 (en) 1994-07-18 1995-07-17 Two-stage kraft cooking

Publications (2)

Publication Number Publication Date
FI970197A0 true FI970197A0 (sv) 1997-01-17
FI970197A FI970197A (sv) 1997-03-17

Family

ID=23058135

Family Applications (1)

Application Number Title Priority Date Filing Date
FI970197A FI970197A (sv) 1994-07-18 1997-01-17 Tvåstegssulfatkokningsförfarande

Country Status (7)

Country Link
US (1) US5522958A (sv)
AU (1) AU3336995A (sv)
BR (1) BR9508423A (sv)
CA (1) CA2195297C (sv)
FI (1) FI970197A (sv)
SE (1) SE9700143L (sv)
WO (1) WO1996002698A1 (sv)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6132556A (en) * 1993-05-04 2000-10-17 Andritz-Ahlstrom Inc. Method of controlling pulp digester pressure via liquor extraction
US5575890A (en) * 1993-05-04 1996-11-19 Kamyr, Inc. Method for selectively increasing the sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of wood
US5660686A (en) * 1994-09-02 1997-08-26 Ahlstrom Machinery Inc. Cooking with spent liquor pretreatment of cellulose material
US5674359A (en) * 1995-02-08 1997-10-07 Ahlstrom Machinery Inc. Continuous cooking of cellulosic fibrous material with cold alkali impregnation
US6248208B1 (en) 1995-06-02 2001-06-19 Andritz-Ahlstrom Inc. Pretreatment of chips before cooking
US5658428A (en) * 1995-10-19 1997-08-19 Kvaerner Pulping Technologies Ab Method for impregnation in a single-vessel hydraulic digester
US5635026A (en) * 1995-11-13 1997-06-03 Ahlstrom Machinery Inc. Cooking cellulose material with high alkali concentrations and/or high pH
AT403301B (de) * 1996-04-04 1998-01-26 Impco Voest Alpine Pulp Tech Kontinuierliche flüssigkeitsführung
FI970254A (sv) 1997-01-22 1998-07-23 Ahlstrom Machinery Oy Förfarande och apparatur för massakokning
US5885414A (en) * 1997-08-18 1999-03-23 Kvaerner Pulping Ab Method of producing pulp with high alkali cooking in the last cooking stage
CA2222190A1 (en) * 1998-02-02 1999-08-02 Billy J. Major New synergistic binder composition
US20010032711A1 (en) * 1998-10-26 2001-10-25 C. Bertil Stromberg Pulp cooking with particular alkali profiles
FI115640B (sv) * 2000-11-03 2005-06-15 Metso Paper Inc Het svartlut användande kokprocess
US6464827B1 (en) 2000-11-28 2002-10-15 Praxair Technology, Inc. Method of digesting wood with an alkaline liquor by adding an acidic agent to precipitate dissociated lignin
US7771565B2 (en) * 2006-02-21 2010-08-10 Packaging Corporation Of America Method of pre-treating woodchips prior to mechanical pulping
US20070240837A1 (en) * 2006-04-13 2007-10-18 Andritz Inc. Hardwood alkaline pulping processes and systems
AT503611B1 (de) * 2006-05-10 2009-05-15 Chemiefaser Lenzing Ag Verfahren zur herstellung eines zellstoffes
AU2007253774C1 (en) * 2006-05-19 2012-03-22 The Research Foundation Of State University Of New York Methods for carbonate pretreatment and pulping of cellulosic material
US7828930B2 (en) * 2007-11-20 2010-11-09 International Paper Company Use of polysulfide in modified cooking
US8303767B2 (en) * 2008-03-18 2012-11-06 The Research Foundation Of State University Of New York Methods of pretreating comminuted cellulosic material with carbonate-containing solutions
US8268125B2 (en) * 2008-03-24 2012-09-18 Api Intellectual Property Holdings, Llc Method for vapor phase pulping with alcohol and sulfur dioxide
TR201409682A2 (tr) * 2014-08-19 2016-03-21 Univ Istanbul Teknik Bir yığın delignifikasyonu.
SE538452C2 (sv) * 2014-11-07 2016-07-05 Valmet Oy Method for operating a two vessel digester system
FI128045B (sv) * 2016-11-17 2019-08-30 Upm Kymmene Corp Förfarande och apparatur för att återvinna kemikalier från ett alkaliskt ligninmaterial

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639987A (en) * 1947-07-09 1953-05-26 Ass Pulp & Paper Mills Two-stage pulping process
SE452482B (sv) * 1982-04-28 1987-11-30 Sunds Defibrator Forfarande for satsvis framstellning av sulfatmassa med hog delignifieringsgrad
US4849052A (en) * 1983-08-24 1989-07-18 Beloit Corporation Batch digester multi-stage pulping process
JPS6059189A (ja) * 1983-08-24 1985-04-05 ベロイト　コ−ポレ−ション 多段式木材チツプ蒸解法
US4601787A (en) * 1984-04-11 1986-07-22 Beloit Corporation Method of bringing a digester up to cooking temperature
NO920692L (no) * 1991-05-24 1992-11-25 Kamyr Inc Behandling av organiske svovelgasser, spesielt i kraftmasse systemer og prosesser

Also Published As

Publication number Publication date
US5522958A (en) 1996-06-04
SE9700143L (sv) 1997-03-12
SE9700143D0 (sv) 1997-01-17
AU3336995A (en) 1996-02-16
BR9508423A (pt) 1997-11-18
CA2195297A1 (en) 1996-02-01
CA2195297C (en) 2000-07-18
WO1996002698A1 (en) 1996-02-01
FI970197A (sv) 1997-03-17

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