AU5582598A - Treatment of bleach plant filtrates with oxygen - Google Patents

Treatment of bleach plant filtrates with oxygen

Info

Publication number
AU5582598A
AU5582598A AU55825/98A AU5582598A AU5582598A AU 5582598 A AU5582598 A AU 5582598A AU 55825/98 A AU55825/98 A AU 55825/98A AU 5582598 A AU5582598 A AU 5582598A AU 5582598 A AU5582598 A AU 5582598A
Authority
AU
Australia
Prior art keywords
oxygen
pulp
treatment
bleaching
part flow
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
AU55825/98A
Inventor
Monica Bokstrom
Peter Hardmeier
Bjorn Jansson
Martin Petersson
Anna Tigerstrom
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.)
AGA AB
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
Publication of AU5582598A publication Critical patent/AU5582598A/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
    • D21C9/10—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.
AU55825/98A 1996-12-27 1997-12-23 Treatment of bleach plant filtrates with oxygen Abandoned AU5582598A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9604802A SE9604802L (en) 1996-12-27 1996-12-27 Process for treating cellulose fibers
SE9604802 1996-12-27
PCT/SE1997/002214 WO1998029598A1 (en) 1996-12-27 1997-12-23 Treatment of bleach plant filtrates with oxygen

Publications (1)

Publication Number Publication Date
AU5582598A true AU5582598A (en) 1998-07-31

Family

ID=20405154

Family Applications (1)

Application Number Title Priority Date Filing Date
AU55825/98A Abandoned AU5582598A (en) 1996-12-27 1997-12-23 Treatment of bleach plant filtrates with oxygen

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
SE9604802L (en) 1998-06-28
CA2275710C (en) 2006-03-14
ATE267288T1 (en) 2004-06-15
NO993120L (en) 1999-08-25
JP2001519858A (en) 2001-10-23
WO1998029598A1 (en) 1998-07-09
NO325725B1 (en) 2008-07-07
BR9714440A (en) 2000-03-21
EP0950136A1 (en) 1999-10-20
CA2275710A1 (en) 1998-07-09
DE69729215T2 (en) 2005-05-25
EP0950136B1 (en) 2004-05-19
NO993120D0 (en) 1999-06-23
SE9604802D0 (en) 1996-12-27
DE69729215D1 (en) 2004-06-24

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