SE509444C2 - Förfarande för minimering av kalcium orsakat inkrustproblem vid framställning av blekt cellulosamassa - Google Patents

Förfarande för minimering av kalcium orsakat inkrustproblem vid framställning av blekt cellulosamassa

Info

Publication number
SE509444C2
SE509444C2 SE9701778A SE9701778A SE509444C2 SE 509444 C2 SE509444 C2 SE 509444C2 SE 9701778 A SE9701778 A SE 9701778A SE 9701778 A SE9701778 A SE 9701778A SE 509444 C2 SE509444 C2 SE 509444C2
Authority
SE
Sweden
Prior art keywords
suspension
pulp
liquid
washing
calcium
Prior art date
Application number
SE9701778A
Other languages
English (en)
Swedish (sv)
Other versions
SE9701778L (sv
SE9701778D0 (sv
Inventor
Jan Liden
Staffan Magnusson
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE9701778A priority Critical patent/SE509444C2/sv
Publication of SE9701778D0 publication Critical patent/SE9701778D0/xx
Priority to PCT/SE1998/000879 priority patent/WO1998051855A1/fr
Priority to AU74639/98A priority patent/AU7463998A/en
Publication of SE9701778L publication Critical patent/SE9701778L/
Publication of SE509444C2 publication Critical patent/SE509444C2/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
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
    • D21C11/0028—Effluents derived from the washing or bleaching plants
    • 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
    • D21C9/008—Prevention of corrosion or formation of deposits on pulp-treating equipment
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)
SE9701778A 1997-05-14 1997-05-14 Förfarande för minimering av kalcium orsakat inkrustproblem vid framställning av blekt cellulosamassa SE509444C2 (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9701778A SE509444C2 (sv) 1997-05-14 1997-05-14 Förfarande för minimering av kalcium orsakat inkrustproblem vid framställning av blekt cellulosamassa
PCT/SE1998/000879 WO1998051855A1 (fr) 1997-05-14 1998-05-12 Procede de reduction des problemes lies au tartre dans la production de pate a papier blanchie, a l'aide d'un circuit ferme de liquide de lavage
AU74639/98A AU7463998A (en) 1997-05-14 1998-05-12 Method of minimizing scaling problems in the manufacture of bleached cellulose pulp while using an essentially fully closed washing liquid flow pattern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9701778A SE509444C2 (sv) 1997-05-14 1997-05-14 Förfarande för minimering av kalcium orsakat inkrustproblem vid framställning av blekt cellulosamassa

Publications (3)

Publication Number Publication Date
SE9701778D0 SE9701778D0 (sv) 1997-05-14
SE9701778L SE9701778L (sv) 1998-11-15
SE509444C2 true SE509444C2 (sv) 1999-01-25

Family

ID=20406921

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9701778A SE509444C2 (sv) 1997-05-14 1997-05-14 Förfarande för minimering av kalcium orsakat inkrustproblem vid framställning av blekt cellulosamassa

Country Status (3)

Country Link
AU (1) AU7463998A (fr)
SE (1) SE509444C2 (fr)
WO (1) WO1998051855A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6605350B1 (en) * 1996-08-23 2003-08-12 Weyerhaeuser Company Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
SE0300276L (sv) * 2003-01-31 2003-12-09 Kvaerner Pulping Tech Förfarande för blekning av cellulosamassa samt bleklinje härför
ES2729110T3 (es) * 2011-09-05 2019-10-30 Stora Enso Oyj Proceso para tratar el licor negro de madera dura y el licor negro de madera dura tratado de acuerdo con el proceso
FI126563B (en) * 2012-03-12 2017-02-15 Upm Kymmene Corp A method and system for treating fluid flows at a pulp mill

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
SE9501623L (sv) * 1995-05-02 1996-11-03 Sunds Defibrator Ind Ab Blekning av massa
SE9503004L (sv) * 1995-08-30 1997-03-01 Sunds Defibrator Ind Ab Blekning av massa

Also Published As

Publication number Publication date
SE9701778L (sv) 1998-11-15
AU7463998A (en) 1998-12-08
SE9701778D0 (sv) 1997-05-14
WO1998051855A1 (fr) 1998-11-19

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Legal Events

Date Code Title Description
NUG Patent has lapsed