CA2341490C - Blanchiment a l'ozone de pate a papier de consistance moyenne sans melange sous cisaillement eleve - Google Patents

Blanchiment a l'ozone de pate a papier de consistance moyenne sans melange sous cisaillement eleve Download PDF

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Publication number
CA2341490C
CA2341490C CA002341490A CA2341490A CA2341490C CA 2341490 C CA2341490 C CA 2341490C CA 002341490 A CA002341490 A CA 002341490A CA 2341490 A CA2341490 A CA 2341490A CA 2341490 C CA2341490 C CA 2341490C
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CA
Canada
Prior art keywords
ozone
pulp
gas
bleaching
stream
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.)
Expired - Fee Related
Application number
CA002341490A
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English (en)
Other versions
CA2341490A1 (fr
Inventor
Rolf De Vos
Panu Tikka
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.)
Arbozon Ltd Oy
Original Assignee
Arbozon Ltd 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 Arbozon Ltd Oy filed Critical Arbozon Ltd Oy
Publication of CA2341490A1 publication Critical patent/CA2341490A1/fr
Application granted granted Critical
Publication of CA2341490C publication Critical patent/CA2341490C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Cette invention se rapporte à un procédé de blanchiment de pâte à papier de consistance moyenne à l'aide d'un gaz contenant de l'ozone. A cet effet, le courant porteur d'ozone fortement concentré est introduit dans le courant de pâte à papier sans mélange mécanique, ou alors accompagné par un mélange d'intensité modérée. On obtient ainsi un gain grâce à la réaction rapide de l'ozone dans des conditions d'écoulement avec effet bouchon, sans l'utilisation de forces de cisaillement détruisant les fibres.
CA002341490A 1998-08-24 1999-08-24 Blanchiment a l'ozone de pate a papier de consistance moyenne sans melange sous cisaillement eleve Expired - Fee Related CA2341490C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI981808 1998-08-24
FI981808A FI981808A (fi) 1998-08-24 1998-08-24 Menetelmä massan valkaisemiseksi
PCT/FI1999/000696 WO2000011262A1 (fr) 1998-08-24 1999-08-24 Lanchiment a l'ozone de pate a papier de consistance moyenne sans melange sous cisaillement eleve

Publications (2)

Publication Number Publication Date
CA2341490A1 CA2341490A1 (fr) 2000-03-02
CA2341490C true CA2341490C (fr) 2009-10-13

Family

ID=8552347

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002341490A Expired - Fee Related CA2341490C (fr) 1998-08-24 1999-08-24 Blanchiment a l'ozone de pate a papier de consistance moyenne sans melange sous cisaillement eleve

Country Status (12)

Country Link
EP (1) EP1115946B1 (fr)
JP (1) JP4888749B2 (fr)
AT (1) ATE386836T1 (fr)
AU (1) AU753807B2 (fr)
BR (1) BR9913123B1 (fr)
CA (1) CA2341490C (fr)
DE (1) DE69938189T2 (fr)
ES (1) ES2303383T3 (fr)
FI (1) FI981808A (fr)
ID (1) ID28478A (fr)
PT (1) PT1115946E (fr)
WO (1) WO2000011262A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073039B2 (ja) * 1986-06-02 1995-01-18 三菱製紙株式会社 パルプの漂白装置
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
US5411633A (en) * 1991-04-30 1995-05-02 Kamyr, Inc. Medium consistency pulp ozone bleaching
US5372679A (en) * 1992-06-08 1994-12-13 Air Products And Chemicals, Inc. Reactor system for treating cellulosic pulp at a constant upward flow velocity
JPH0633390A (ja) * 1992-07-08 1994-02-08 Sumitomo Heavy Ind Ltd オゾンによるパルプ漂白方法
CA2132165A1 (fr) * 1993-09-21 1995-03-22 Lewis D. Shackford Methode de blanchiment rapide a l'ozone de la pate
JP3309332B2 (ja) * 1994-04-04 2002-07-29 住友重機械工業株式会社 パルプ漂白方法
SE9502339D0 (sv) * 1995-06-28 1995-06-28 Jan Arlemark Anordning för generering av ozon i gasfas
JPH1121778A (ja) * 1997-07-08 1999-01-26 Mitsubishi Paper Mills Ltd 中濃度パルプのオゾン漂白方法
FR2768442B1 (fr) * 1997-09-15 1999-10-15 Air Liquide Procede de blanchiment d'une pate a papier avec de l'ozone et du dioxyde de chlore

Also Published As

Publication number Publication date
EP1115946B1 (fr) 2008-02-20
ES2303383T3 (es) 2008-08-01
AU5376099A (en) 2000-03-14
WO2000011262A1 (fr) 2000-03-02
FI981808A0 (fi) 1998-08-24
PT1115946E (pt) 2008-05-21
AU753807B2 (en) 2002-10-31
ATE386836T1 (de) 2008-03-15
ID28478A (id) 2001-05-31
EP1115946A1 (fr) 2001-07-18
BR9913123A (pt) 2001-09-25
JP2002523641A (ja) 2002-07-30
DE69938189D1 (de) 2008-04-03
FI981808A (fi) 2000-02-25
DE69938189T2 (de) 2009-02-12
BR9913123B1 (pt) 2011-02-08
CA2341490A1 (fr) 2000-03-02
JP4888749B2 (ja) 2012-02-29

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MKLA Lapsed

Effective date: 20150824

MKLA Lapsed

Effective date: 20150824