DE69938189T2 - Ozonbleiche von einem mittelkonsistenten zellstoff ohne hochschermischung - Google Patents

Ozonbleiche von einem mittelkonsistenten zellstoff ohne hochschermischung Download PDF

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Publication number
DE69938189T2
DE69938189T2 DE69938189T DE69938189T DE69938189T2 DE 69938189 T2 DE69938189 T2 DE 69938189T2 DE 69938189 T DE69938189 T DE 69938189T DE 69938189 T DE69938189 T DE 69938189T DE 69938189 T2 DE69938189 T2 DE 69938189T2
Authority
DE
Germany
Prior art keywords
ozone
gas
pulp
stream
bleaching
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 - Lifetime
Application number
DE69938189T
Other languages
German (de)
English (en)
Other versions
DE69938189D1 (de
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
Application granted granted Critical
Publication of DE69938189D1 publication Critical patent/DE69938189D1/de
Publication of DE69938189T2 publication Critical patent/DE69938189T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
DE69938189T 1998-08-24 1999-08-24 Ozonbleiche von einem mittelkonsistenten zellstoff ohne hochschermischung Expired - Lifetime DE69938189T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI981808A FI981808A (fi) 1998-08-24 1998-08-24 Menetelmä massan valkaisemiseksi
FI981808 1998-08-24
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
DE69938189D1 DE69938189D1 (de) 2008-04-03
DE69938189T2 true DE69938189T2 (de) 2009-02-12

Family

ID=8552347

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69938189T Expired - Lifetime DE69938189T2 (de) 1998-08-24 1999-08-24 Ozonbleiche von einem mittelkonsistenten zellstoff ohne hochschermischung

Country Status (12)

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

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
EP1115946B1 (en) 2008-02-20
ES2303383T3 (es) 2008-08-01
AU5376099A (en) 2000-03-14
FI981808A0 (fi) 1998-08-24
BR9913123A (pt) 2001-09-25
ID28478A (id) 2001-05-31
DE69938189D1 (de) 2008-04-03
JP2002523641A (ja) 2002-07-30
CA2341490A1 (en) 2000-03-02
JP4888749B2 (ja) 2012-02-29
ATE386836T1 (de) 2008-03-15
CA2341490C (en) 2009-10-13
FI981808A (fi) 2000-02-25
BR9913123B1 (pt) 2011-02-08
AU753807B2 (en) 2002-10-31
PT1115946E (pt) 2008-05-21
WO2000011262A1 (en) 2000-03-02
EP1115946A1 (en) 2001-07-18

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Legal Events

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8364 No opposition during term of opposition