CA2360638A1 - Treatment of recirculated filtrates in pulp production - Google Patents

Treatment of recirculated filtrates in pulp production Download PDF

Info

Publication number
CA2360638A1
CA2360638A1 CA002360638A CA2360638A CA2360638A1 CA 2360638 A1 CA2360638 A1 CA 2360638A1 CA 002360638 A CA002360638 A CA 002360638A CA 2360638 A CA2360638 A CA 2360638A CA 2360638 A1 CA2360638 A1 CA 2360638A1
Authority
CA
Canada
Prior art keywords
stage
fraction
washer
filtrate
liquid
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002360638A
Other languages
English (en)
French (fr)
Inventor
Janne Vehmaa
Olavi Pikka
Pekka Tervola
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Oy
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2360638A1 publication Critical patent/CA2360638A1/en
Abandoned legal-status Critical Current

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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA002360638A 1999-01-22 2000-01-20 Treatment of recirculated filtrates in pulp production Abandoned CA2360638A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI990127 1999-01-22
FI990127A FI990127A0 (fi) 1999-01-22 1999-01-22 Menetelmä massan käsittelemiseksi
PCT/FI2000/000045 WO2000043589A1 (en) 1999-01-22 2000-01-20 Treatment of recirculated filtrates in pulp production

Publications (1)

Publication Number Publication Date
CA2360638A1 true CA2360638A1 (en) 2000-07-27

Family

ID=8553467

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002360638A Abandoned CA2360638A1 (en) 1999-01-22 2000-01-20 Treatment of recirculated filtrates in pulp production

Country Status (5)

Country Link
AU (1) AU2297400A (xx)
CA (1) CA2360638A1 (xx)
FI (1) FI990127A0 (xx)
SE (1) SE0102387L (xx)
WO (1) WO2000043589A1 (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI115977B2 (fi) * 2003-04-07 2019-03-29 Stora Enso Oyj Alkalisen pesunesteen puhdistaminen
WO2015197917A1 (en) * 2014-06-23 2015-12-30 Metsä Fibre Oy Method of delignifying fibrous suspensions of alkaline cooking
SE538452C2 (en) * 2014-11-07 2016-07-05 Valmet Oy Method for operating a two vessel digester system
SE542676C2 (en) 2017-11-29 2020-06-23 Axolot Solutions Ab Method for washer pulp where the wash filter is purified and re-circulated

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI85293C (sv) * 1990-05-04 1992-03-25 Poeyry Jaakko & Co Oy Förfarande för rening och återföring av cellulosafabrikers blekeriavva tten
SE470538C (sv) * 1992-12-02 1996-01-11 Kvaerner Pulping Tech Sätt vid blekning av massa utan användning av klorhaltiga kemikalier
SE501613C2 (sv) * 1993-08-03 1995-03-27 Kvaerner Pulping Tech Sätt vid integrering av blekning och återvinning vid framställning av massa

Also Published As

Publication number Publication date
FI990127A0 (fi) 1999-01-22
AU2297400A (en) 2000-08-07
WO2000043589A1 (en) 2000-07-27
SE0102387D0 (sv) 2001-07-04
SE0102387L (sv) 2001-07-04
WO2000043589B1 (en) 2000-10-12

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued