SE9700143L - Kraftkokning i två steg - Google Patents

Kraftkokning i två steg

Info

Publication number
SE9700143L
SE9700143L SE9700143A SE9700143A SE9700143L SE 9700143 L SE9700143 L SE 9700143L SE 9700143 A SE9700143 A SE 9700143A SE 9700143 A SE9700143 A SE 9700143A SE 9700143 L SE9700143 L SE 9700143L
Authority
SE
Sweden
Prior art keywords
stage
cooking
liquor
fresh
cook
Prior art date
Application number
SE9700143A
Other languages
English (en)
Swedish (sv)
Other versions
SE9700143D0 (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 SE9700143D0 publication Critical patent/SE9700143D0/xx
Publication of SE9700143L publication Critical patent/SE9700143L/xx

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)
SE9700143A 1994-07-18 1997-01-17 Kraftkokning i två steg SE9700143L (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 (fr) 1994-07-18 1995-07-17 Cuisson de pate kraft en deux etapes

Publications (2)

Publication Number Publication Date
SE9700143D0 SE9700143D0 (sv) 1997-01-17
SE9700143L true SE9700143L (sv) 1997-03-12

Family

ID=23058135

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9700143A SE9700143L (sv) 1994-07-18 1997-01-17 Kraftkokning i två steg

Country Status (7)

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

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 (fi) * 1997-01-22 1998-07-23 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan keittämiseksi
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 (fr) * 1998-02-02 1999-08-02 Billy J. Major Nouveau liant synergique
US20010032711A1 (en) * 1998-10-26 2001-10-25 C. Bertil Stromberg Pulp cooking with particular alkali profiles
FI115640B (fi) * 2000-11-03 2005-06-15 Metso Paper Inc Kuumaa mustalipeää käyttävä keittoprosessi
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
BRPI0711473A2 (pt) * 2006-05-19 2011-11-16 Univ New York State Res Found método de tratamento de material fibroso celulósico triturado, e, polpa
US7828930B2 (en) * 2007-11-20 2010-11-09 International Paper Company Use of polysulfide in modified cooking
WO2009117402A2 (fr) * 2008-03-18 2009-09-24 The Research Foundation Of State University Of New York Procédés de prétraitement d'un matériau cellulosique haché avec des solutions contenant du carbonate
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 (en) * 2014-11-07 2016-07-05 Valmet Oy Method for operating a two vessel digester system
FI128045B (en) * 2016-11-17 2019-08-30 Upm Kymmene Corp Method and apparatus for recovering chemicals from alkaline lignin material

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
FI970197A (fi) 1997-03-17
FI970197A0 (fi) 1997-01-17
US5522958A (en) 1996-06-04
AU3336995A (en) 1996-02-16
BR9508423A (pt) 1997-11-18
CA2195297A1 (fr) 1996-02-01
CA2195297C (fr) 2000-07-18
WO1996002698A1 (fr) 1996-02-01
SE9700143D0 (sv) 1997-01-17

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