SE9604802D0 - Process for treating cellulose fibers - Google Patents

Process for treating cellulose fibers

Info

Publication number
SE9604802D0
SE9604802D0 SE9604802A SE9604802A SE9604802D0 SE 9604802 D0 SE9604802 D0 SE 9604802D0 SE 9604802 A SE9604802 A SE 9604802A SE 9604802 A SE9604802 A SE 9604802A SE 9604802 D0 SE9604802 D0 SE 9604802D0
Authority
SE
Sweden
Prior art keywords
pulp
bleaching
part flow
cellulose fibers
residue liquid
Prior art date
Application number
SE9604802A
Other languages
Swedish (sv)
Other versions
SE9604802L (en
Inventor
Monica Bokstroem
Peter Hardmeier
Bjoern Jansson
Martin Peterson
Anna Tigerstroem
Original Assignee
Aga 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 Aga Ab filed Critical Aga Ab
Priority to SE9604802A priority Critical patent/SE9604802L/en
Publication of SE9604802D0 publication Critical patent/SE9604802D0/en
Priority to CA002275710A priority patent/CA2275710C/en
Priority to BR9714440A priority patent/BR9714440A/en
Priority to JP52992698A priority patent/JP2001519858A/en
Priority to EP97952166A priority patent/EP0950136B1/en
Priority to DE69729215T priority patent/DE69729215T2/en
Priority to AU55825/98A priority patent/AU5582598A/en
Priority to AT97952166T priority patent/ATE267288T1/en
Priority to PCT/SE1997/002214 priority patent/WO1998029598A1/en
Publication of SE9604802L publication Critical patent/SE9604802L/en
Priority to NO19993120A priority patent/NO325725B1/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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching 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
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)

Abstract

A method for the treatment of cellulose fibres in a pulp stream (22) comprises the following steps. A pulp is prepared (21). The pulp is subjected to a bleaching, comprising at least a bleaching step (25, 30) by the addition of an oxidizing bleaching agent. After the bleaching, liquid is removed (28, 33) from the pulp while obtaining a residue liquid and at least a part flow of the residue liquid obtained is conveyed back to the pulp stream (22) via a transport conduit by means of a pump device. Said part flow of the residue liquid is treated by oxygen (45) by the supply of oxygen to the part flow downstream of the pump device.
SE9604802A 1996-12-27 1996-12-27 Process for treating cellulose fibers SE9604802L (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SE9604802A SE9604802L (en) 1996-12-27 1996-12-27 Process for treating cellulose fibers
PCT/SE1997/002214 WO1998029598A1 (en) 1996-12-27 1997-12-23 Treatment of bleach plant filtrates with oxygen
EP97952166A EP0950136B1 (en) 1996-12-27 1997-12-23 Treatment of bleach plant filtrates with oxygen
BR9714440A BR9714440A (en) 1996-12-27 1997-12-23 Treatment of oxygen-bleached plant filtrates
JP52992698A JP2001519858A (en) 1996-12-27 1997-12-23 Treatment of bleach plant filtrate with oxygen.
CA002275710A CA2275710C (en) 1996-12-27 1997-12-23 Treatment of bleach plant filtrates with oxygen
DE69729215T DE69729215T2 (en) 1996-12-27 1997-12-23 OXYGEN TREATMENT OF FILTRATES FROM A BLEACHING SYSTEM
AU55825/98A AU5582598A (en) 1996-12-27 1997-12-23 Treatment of bleach plant filtrates with oxygen
AT97952166T ATE267288T1 (en) 1996-12-27 1997-12-23 OXYGEN TREATMENT OF FILTRATES FROM A BLEACHING PLANT
NO19993120A NO325725B1 (en) 1996-12-27 1999-06-23 Method of treating filtrates from bleaches with oxygen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9604802A SE9604802L (en) 1996-12-27 1996-12-27 Process for treating cellulose fibers

Publications (2)

Publication Number Publication Date
SE9604802D0 true SE9604802D0 (en) 1996-12-27
SE9604802L SE9604802L (en) 1998-06-28

Family

ID=20405154

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9604802A SE9604802L (en) 1996-12-27 1996-12-27 Process for treating cellulose fibers

Country Status (10)

Country Link
EP (1) EP0950136B1 (en)
JP (1) JP2001519858A (en)
AT (1) ATE267288T1 (en)
AU (1) AU5582598A (en)
BR (1) BR9714440A (en)
CA (1) CA2275710C (en)
DE (1) DE69729215T2 (en)
NO (1) NO325725B1 (en)
SE (1) SE9604802L (en)
WO (1) WO1998029598A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE522161C2 (en) * 1999-06-17 2004-01-20 Kvaerner Pulping Tech Method and device for oxygen delignification with improved copper reduction
FI117391B (en) 2000-05-16 2006-09-29 Andritz Oy Method and apparatus for pulping
FI20065494A0 (en) * 2006-07-14 2006-07-14 Linde Ag Process for treating a filtrate with oxygen and using oxygen to reduce harmful components of a filtrate
FI126551B (en) * 2009-11-25 2017-02-15 Andritz Oy A method for treating fluid flows at a pulp mill
WO2015197917A1 (en) * 2014-06-23 2015-12-30 Metsä Fibre Oy Method of delignifying fibrous suspensions of alkaline cooking

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0564443A1 (en) * 1992-03-15 1993-10-06 Kamyr, Inc. Treatment of bleach plant filtrates
US5509999A (en) * 1993-03-24 1996-04-23 Kamyr, Inc. Treatment of bleach plant effluents

Also Published As

Publication number Publication date
ATE267288T1 (en) 2004-06-15
WO1998029598A1 (en) 1998-07-09
CA2275710C (en) 2006-03-14
NO993120L (en) 1999-08-25
NO993120D0 (en) 1999-06-23
AU5582598A (en) 1998-07-31
DE69729215D1 (en) 2004-06-24
BR9714440A (en) 2000-03-21
SE9604802L (en) 1998-06-28
CA2275710A1 (en) 1998-07-09
JP2001519858A (en) 2001-10-23
NO325725B1 (en) 2008-07-07
DE69729215T2 (en) 2005-05-25
EP0950136B1 (en) 2004-05-19
EP0950136A1 (en) 1999-10-20

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