SE0003391D0 - Bleaching process and systems therefore - Google Patents

Bleaching process and systems therefore

Info

Publication number
SE0003391D0
SE0003391D0 SE0003391A SE0003391A SE0003391D0 SE 0003391 D0 SE0003391 D0 SE 0003391D0 SE 0003391 A SE0003391 A SE 0003391A SE 0003391 A SE0003391 A SE 0003391A SE 0003391 D0 SE0003391 D0 SE 0003391D0
Authority
SE
Sweden
Prior art keywords
ozone
oxygen
bleaching
pulp
systems
Prior art date
Application number
SE0003391A
Other languages
Swedish (sv)
Other versions
SE0003391L (en
Original Assignee
Valmet Corp
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 Valmet Corp filed Critical Valmet Corp
Priority to SE0003391A priority Critical patent/SE0003391L/en
Publication of SE0003391D0 publication Critical patent/SE0003391D0/en
Priority to PCT/SE2001/002002 priority patent/WO2002025008A1/en
Priority to AU2001290420A priority patent/AU2001290420A1/en
Publication of SE0003391L publication Critical patent/SE0003391L/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
    • D21C9/147—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)

Abstract

The present invention relates to a method and a system for bleaching of pulp with ozone wherein oxygen is recycled and concentrated. The system comprises an ozone generator (2) for the providing of ozone-containing oxygen; a reactor (3) for bleaching of the pulp; an ozone destruction unit (5) for the destruction of ozone; and an oxygen concentration unit (5) for concentrating oxygen-rich gas, which concentration unit makes use of vacuum- and/or pressure swing adsorption technology and/or membrane technology.
SE0003391A 2000-09-22 2000-09-22 Bleaching process and systems therefore SE0003391L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0003391A SE0003391L (en) 2000-09-22 2000-09-22 Bleaching process and systems therefore
PCT/SE2001/002002 WO2002025008A1 (en) 2000-09-22 2001-09-19 Process and system for bleaching pulp with ozone wherein oxygen-rich gas is recycled
AU2001290420A AU2001290420A1 (en) 2000-09-22 2001-09-19 Process and system for bleaching pulp with ozone wherein oxygen-rich gas is recycled

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0003391A SE0003391L (en) 2000-09-22 2000-09-22 Bleaching process and systems therefore

Publications (2)

Publication Number Publication Date
SE0003391D0 true SE0003391D0 (en) 2000-09-22
SE0003391L SE0003391L (en) 2002-03-23

Family

ID=20281121

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0003391A SE0003391L (en) 2000-09-22 2000-09-22 Bleaching process and systems therefore

Country Status (3)

Country Link
AU (1) AU2001290420A1 (en)
SE (1) SE0003391L (en)
WO (1) WO2002025008A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE1150015A1 (en) * 2011-01-12 2012-07-13 Wallenius Water Ab Ozone bleaching of pulp

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632937A1 (en) * 1986-09-27 1988-03-31 Bbc Brown Boveri & Cie METHOD FOR PRODUCING OZONE
FI883026A (en) * 1987-06-25 1988-12-26 Voest Alpine Ind Anlagen FOERFARANDE FOER FRAMSTAELLNING AV RENT SYRE FOER DAEREFTER FOELJANDE FRAMSTAELLNING AV OZON.
AT392256B (en) * 1989-06-26 1991-02-25 Voest Alpine Ind Anlagen METHOD FOR PRODUCING OXYGEN AND / OR OZONE
WO1993018226A1 (en) * 1992-03-02 1993-09-16 Kamyr, Inc. Combined ozone destruction and fiber scrubbing in paper pulp mills
CA2078276C (en) * 1992-09-15 2004-05-25 Derek Hornsey Recovery of oxygen-rich gas from ozone bleaching processes

Also Published As

Publication number Publication date
WO2002025008A1 (en) 2002-03-28
AU2001290420A1 (en) 2002-04-02
SE0003391L (en) 2002-03-23

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Legal Events

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