ATE146538T1 - Verlängertes kraftkochen mit dem waschkreislauf zugefügter weisslauge - Google Patents

Verlängertes kraftkochen mit dem waschkreislauf zugefügter weisslauge

Info

Publication number
ATE146538T1
ATE146538T1 AT91108241T AT91108241T ATE146538T1 AT E146538 T1 ATE146538 T1 AT E146538T1 AT 91108241 T AT91108241 T AT 91108241T AT 91108241 T AT91108241 T AT 91108241T AT E146538 T1 ATE146538 T1 AT E146538T1
Authority
AT
Austria
Prior art keywords
white liquor
kraft
wash
digester
extended power
Prior art date
Application number
AT91108241T
Other languages
German (de)
English (en)
Inventor
Bertil Stromberg
Jian Jiang
Richard Laakso
Joseph Phillips
Brian Greenwood
James Prough
Original Assignee
Kamyr Inc
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 Kamyr Inc filed Critical Kamyr Inc
Application granted granted Critical
Publication of ATE146538T1 publication Critical patent/ATE146538T1/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
    • 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
    • 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
    • D21C3/24—Continuous 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
    • D21C7/00—Digesters
    • 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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Cookers (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Detergent Compositions (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
AT91108241T 1990-09-17 1991-05-22 Verlängertes kraftkochen mit dem waschkreislauf zugefügter weisslauge ATE146538T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58304390A 1990-09-17 1990-09-17

Publications (1)

Publication Number Publication Date
ATE146538T1 true ATE146538T1 (de) 1997-01-15

Family

ID=24331461

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91108241T ATE146538T1 (de) 1990-09-17 1991-05-22 Verlängertes kraftkochen mit dem waschkreislauf zugefügter weisslauge

Country Status (10)

Country Link
EP (1) EP0476230B1 (fi)
JP (1) JP3029492B2 (fi)
AT (1) ATE146538T1 (fi)
BR (1) BR9103650A (fi)
CA (1) CA2037717C (fi)
DE (1) DE69123670D1 (fi)
FI (1) FI103815B1 (fi)
NO (1) NO179918C (fi)
RU (1) RU2089694C1 (fi)
ZA (1) ZA912117B (fi)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2089516A1 (en) * 1992-02-21 1993-08-22 Kaj Henricson Chlorine free pulping and bleaching sequence
US5401361A (en) * 1992-08-19 1995-03-28 Kamyr, Inc. Completely coutercurrent cook continuous digester
SE501848C2 (sv) * 1992-11-18 1995-06-06 Kvaerner Pulping Tech Metod att koka massa kontinuerligt vid konstant temperatur
SE500455C2 (sv) * 1992-11-18 1994-06-27 Kamyr Ab Förfarande vid kontinuerlig kokning under förhöjt tryck och temperatur av fibermateral i en vertikal kokare
WO1994024362A1 (en) * 1993-04-20 1994-10-27 Kamyr Ab Method of continuously cooking pulp
US5766413A (en) * 1993-04-23 1998-06-16 Kvaerner Pulping Ab Process for isothermal cooking pulp in a continuous digester
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
US5489363A (en) * 1993-05-04 1996-02-06 Kamyr, Inc. Pulping with low dissolved solids for improved pulp strength
US5536366A (en) * 1993-05-04 1996-07-16 Ahlstrom Machinery Inc. Digester system for implementing low dissolved solids profiling
US6132556A (en) * 1993-05-04 2000-10-17 Andritz-Ahlstrom Inc. Method of controlling pulp digester pressure via liquor extraction
US5824188A (en) * 1993-05-04 1998-10-20 Ahlstrom Machinery Inc. Method of controlling the pressure of a continuous digester using an extraction-dilution
SE502667C2 (sv) * 1993-07-12 1995-12-04 Kvaerner Pulping Tech Behandling av fibermaterial med komplexbildare före kokning
WO1996007786A1 (en) * 1994-09-02 1996-03-14 Kamyr, Inc. Continuous kraft cooking with black liquor pretreatment
SE506458C2 (sv) * 1996-02-09 1997-12-15 Kvaerner Pulping Tech Kontinuerlig kokning av cellulosahaltigt material med värmeväxling mellan kokaravdrag och cirkulerande kokvätska
BE1011503A3 (fr) * 1997-10-17 1999-10-05 Solvay Interox Fabrication de pate a papier chimique.
SE0004049L (sv) * 2000-11-03 2001-11-05 Kvaerner Pulping Tech Kontinuerlig kokning av massa med avdrag av begagnad koklut dels från kokaren, dels från en efterföljande tryckdiffusör
SE518542C2 (sv) * 2001-03-21 2002-10-22 Kvaerner Pulping Tech Kontinuerlig kokare förfarande för drift av kontinuerlig kokare och återföringssystem för kokvätska i en kontinuerlig kokare
SE517674E8 (sv) * 2001-05-02 2015-10-20 Metso Paper Sweden Ab Förfarande för tvättvätsketillförsel till kokningsprocess för cellulosamassa
US20090038767A1 (en) * 2007-08-07 2009-02-12 Andritz Inc. Method and System for Semi-Chemical Pulping
CA2638196C (en) 2007-08-07 2015-12-15 Andritz Inc. Method and system for semi-chemical pulping
SE539706C2 (en) * 2014-11-07 2017-11-07 Valmet Oy Method for recovering hydrolyzate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215588A (en) * 1963-08-15 1965-11-02 Lummus Co Continuous impregnation, cooking, and washing of fibrous material
US3427218A (en) * 1964-07-10 1969-02-11 Kamyr Ab Method of performing counter-current continuous cellulose digestion
US5053108A (en) * 1989-06-28 1991-10-01 Kamyr Ab High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips

Also Published As

Publication number Publication date
AU647129B2 (en) 1994-03-17
BR9103650A (pt) 1992-05-19
FI103815B (fi) 1999-09-30
ZA912117B (en) 1991-11-27
NO179918C (no) 1997-01-08
NO913639D0 (no) 1991-09-16
NO179918B (no) 1996-09-30
NO913639L (no) 1992-03-18
JP3029492B2 (ja) 2000-04-04
EP0476230A3 (en) 1993-06-09
FI914353A0 (fi) 1991-09-17
EP0476230B1 (en) 1996-12-18
JPH04300378A (ja) 1992-10-23
EP0476230A2 (en) 1992-03-25
CA2037717C (en) 1996-03-05
CA2037717A1 (en) 1992-03-18
FI103815B1 (fi) 1999-09-30
AU7830591A (en) 1992-03-19
FI914353A (fi) 1992-03-18
RU2089694C1 (ru) 1997-09-10
DE69123670D1 (de) 1997-01-30

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CA1110412A (en) Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound
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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties