CA2341490C - Bleaching of medium consistency pulp with ozone without high shear mixing - Google Patents

Bleaching of medium consistency pulp with ozone without high shear mixing 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
Authority
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
Other languages
English (en)
French (fr)
Other versions
CA2341490A1 (en
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/en
Application granted granted Critical
Publication of CA2341490C publication Critical patent/CA2341490C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21C9/147—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)
CA002341490A 1998-08-24 1999-08-24 Bleaching of medium consistency pulp with ozone without high shear mixing Expired - Fee Related CA2341490C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI981808 1998-08-24
FI981808A FI981808L (fi) 1998-08-24 1998-08-24 Menetelmä massan valkaisemiseksi
PCT/FI1999/000696 WO2000011262A1 (en) 1998-08-24 1999-08-24 Bleaching of medium consistency pulp with ozone without high shear mixing

Publications (2)

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

Family

ID=8552347

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002341490A Expired - Fee Related CA2341490C (en) 1998-08-24 1999-08-24 Bleaching of medium consistency pulp with ozone without high shear mixing

Country Status (12)

Country Link
EP (1) EP1115946B1 (de)
JP (1) JP4888749B2 (de)
AT (1) ATE386836T1 (de)
AU (1) AU753807B2 (de)
BR (1) BR9913123B1 (de)
CA (1) CA2341490C (de)
DE (1) DE69938189T2 (de)
ES (1) ES2303383T3 (de)
FI (1) FI981808L (de)
ID (1) ID28478A (de)
PT (1) PT1115946E (de)
WO (1) WO2000011262A1 (de)

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 (en) * 1993-09-21 1995-03-22 Lewis D. Shackford Method for rapid ozone bleaching of wood pulp
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
AU5376099A (en) 2000-03-14
WO2000011262A1 (en) 2000-03-02
PT1115946E (pt) 2008-05-21
FI981808A7 (fi) 2000-02-25
JP4888749B2 (ja) 2012-02-29
EP1115946A1 (de) 2001-07-18
EP1115946B1 (de) 2008-02-20
BR9913123B1 (pt) 2011-02-08
ID28478A (id) 2001-05-31
JP2002523641A (ja) 2002-07-30
FI981808L (fi) 2000-02-25
BR9913123A (pt) 2001-09-25
ES2303383T3 (es) 2008-08-01
DE69938189T2 (de) 2009-02-12
DE69938189D1 (de) 2008-04-03
FI981808A0 (fi) 1998-08-24
CA2341490A1 (en) 2000-03-02
AU753807B2 (en) 2002-10-31
ATE386836T1 (de) 2008-03-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150824