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SE9403818D0 - Method of ozone bleaching - Google Patents

Method of ozone bleaching

Info

Publication number
SE9403818D0
SE9403818D0 SE9403818A SE9403818A SE9403818D0 SE 9403818 D0 SE9403818 D0 SE 9403818D0 SE 9403818 A SE9403818 A SE 9403818A SE 9403818 A SE9403818 A SE 9403818A SE 9403818 D0 SE9403818 D0 SE 9403818D0
Authority
SE
Sweden
Prior art keywords
ozone
pulp
content
residual gas
paper
Prior art date
Application number
SE9403818A
Other languages
Swedish (sv)
Other versions
SE9403818L (en
Inventor
Anders Wernqvist
Haakan Dahlloef
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE9403818A priority Critical patent/SE9403818L/en
Publication of SE9403818D0 publication Critical patent/SE9403818D0/en
Priority to EP95938081A priority patent/EP0791101B1/en
Priority to PCT/SE1995/001207 priority patent/WO1996014464A1/en
Priority to DE69521809T priority patent/DE69521809T2/en
Priority to AU38842/95A priority patent/AU3884295A/en
Priority to AT95938081T priority patent/ATE203292T1/en
Publication of SE9403818L publication Critical patent/SE9403818L/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
    • D21C11/08—Deodorisation ; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Treating Waste Gases (AREA)

Abstract

Method associated with bleaching chemical paper pulp, in which a pulp suspension is brought into contact with an ozone-containing gas, after which a residual gas (6), having a partially remaining ozone content, is separated off from the pulp suspension. The ozone-containing residual gas is subsequently utilized for odour treatment of malodorous condensates (8), with relatively low COD-content, which are obtained when producing paper or paper pulp.
SE9403818A 1994-11-08 1994-11-08 Method of ozone bleaching SE9403818L (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9403818A SE9403818L (en) 1994-11-08 1994-11-08 Method of ozone bleaching
EP95938081A EP0791101B1 (en) 1994-11-08 1995-10-17 Odour treatment of malodorous condensates with ozone-containing residual gas
PCT/SE1995/001207 WO1996014464A1 (en) 1994-11-08 1995-10-17 Odour treatment of malodorous condensates with ozone-containing residual gas
DE69521809T DE69521809T2 (en) 1994-11-08 1995-10-17 ODOR TREATMENT OF SMELLING CONDENSATES WITH OZONE-CONTAINING RESIDUAL GAS
AU38842/95A AU3884295A (en) 1994-11-08 1995-10-17 Odour treatment of malodorous condensates with ozone-containing residual gas
AT95938081T ATE203292T1 (en) 1994-11-08 1995-10-17 ODOR TREATMENT OF ODOR-SMELLING CONDENSATE WITH RESIDUAL GASES CONTAINING OZONE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9403818A SE9403818L (en) 1994-11-08 1994-11-08 Method of ozone bleaching

Publications (2)

Publication Number Publication Date
SE9403818D0 true SE9403818D0 (en) 1994-11-08
SE9403818L SE9403818L (en) 1996-05-09

Family

ID=20395879

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9403818A SE9403818L (en) 1994-11-08 1994-11-08 Method of ozone bleaching

Country Status (6)

Country Link
EP (1) EP0791101B1 (en)
AT (1) ATE203292T1 (en)
AU (1) AU3884295A (en)
DE (1) DE69521809T2 (en)
SE (1) SE9403818L (en)
WO (1) WO1996014464A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348129B1 (en) 2000-04-28 2002-02-19 Praxair Technology Inc Treatment of pulp mill condensate with ozone
TW590789B (en) 2001-09-14 2004-06-11 Ind Tech Res Inst Method of treating an air stream containing VOCs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO150971C (en) * 1981-04-10 1985-01-23 Papirind Forskningsinst PROCEDURE FOR CLEANING OF CONDENSATIVES FROM THE SULPHATE PROCESS
SE9200183L (en) * 1992-01-23 1993-07-24 Kamyr Ab SEPARATORY DEVICE AND PROCEDURE
CA2107764A1 (en) * 1992-03-02 1993-09-16 Lawrence A. Hinkey Combined ozone destruction and fiber scrubbing in paper pulp mills

Also Published As

Publication number Publication date
EP0791101A1 (en) 1997-08-27
DE69521809T2 (en) 2002-04-04
AU3884295A (en) 1996-05-31
EP0791101B1 (en) 2001-07-18
WO1996014464A1 (en) 1996-05-17
SE9403818L (en) 1996-05-09
DE69521809D1 (en) 2001-08-23
ATE203292T1 (en) 2001-08-15

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