SE0102387L - Treatment of recycled filtrates in mass production - Google Patents

Treatment of recycled filtrates in mass production

Info

Publication number
SE0102387L
SE0102387L SE0102387A SE0102387A SE0102387L SE 0102387 L SE0102387 L SE 0102387L SE 0102387 A SE0102387 A SE 0102387A SE 0102387 A SE0102387 A SE 0102387A SE 0102387 L SE0102387 L SE 0102387L
Authority
SE
Sweden
Prior art keywords
washing
treatment
mass production
recycled
liquid
Prior art date
Application number
SE0102387A
Other languages
Swedish (sv)
Other versions
SE0102387D0 (en
Inventor
Olavi Pikka
Janne Vehmaa
Pekka Tervola
Original Assignee
Andritz Ahlstrom Oy
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 Andritz Ahlstrom Oy filed Critical Andritz Ahlstrom Oy
Publication of SE0102387L publication Critical patent/SE0102387L/en
Publication of SE0102387D0 publication Critical patent/SE0102387D0/en

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

Abstract

The present invention relates to a method of treating pulp. The method according to the invention is particularly well suited for intensifying the washing of fiber suspensions in the wood processing industry in cases where liquid recycled from later washing stages is used as washing liquid. According to a preferred embodiment of the invention part of the washing liquid to be fed to a washer is separated to form a separate flow, which is divided into a cleaner and a fouler fraction that are returned to appropriate locations of the process.
SE0102387A 1999-01-22 2001-07-04 Treatment of recirculated filtrates in pulp production SE0102387D0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990127A FI990127A0 (en) 1999-01-22 1999-01-22 Process for treating pulp
PCT/FI2000/000045 WO2000043589A1 (en) 1999-01-22 2000-01-20 Treatment of recirculated filtrates in pulp production

Publications (2)

Publication Number Publication Date
SE0102387L true SE0102387L (en) 2001-07-04
SE0102387D0 SE0102387D0 (en) 2001-07-04

Family

ID=8553467

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0102387A SE0102387D0 (en) 1999-01-22 2001-07-04 Treatment of recirculated filtrates in pulp production

Country Status (5)

Country Link
AU (1) AU2297400A (en)
CA (1) CA2360638A1 (en)
FI (1) FI990127A0 (en)
SE (1) SE0102387D0 (en)
WO (1) WO2000043589A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI115977B2 (en) * 2003-04-07 2019-03-29 Stora Enso Oyj Purification of alkaline washing liquid
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 and a system for washing paper pulp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI85293C (en) * 1990-05-04 1992-03-25 Poeyry Jaakko & Co Oy FOERFARANDE FOER RENING OCH AOTERFOERING AV CELLULOSAFABRIKERS BLEKERIAVATTEN.
SE470538C (en) * 1992-12-02 1996-01-11 Kvaerner Pulping Tech When bleaching pulp, use no chlorine-containing chemicals
SE501613C2 (en) * 1993-08-03 1995-03-27 Kvaerner Pulping Tech Method of integrating bleaching and recycling in pulp production

Also Published As

Publication number Publication date
CA2360638A1 (en) 2000-07-27
AU2297400A (en) 2000-08-07
FI990127A0 (en) 1999-01-22
WO2000043589A1 (en) 2000-07-27
WO2000043589B1 (en) 2000-10-12
SE0102387D0 (en) 2001-07-04

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Legal Events

Date Code Title Description
NAV Patent application has lapsed