ZA924351B - Ozone bleaching process - Google Patents

Ozone bleaching process

Info

Publication number
ZA924351B
ZA924351B ZA924351A ZA924351A ZA924351B ZA 924351 B ZA924351 B ZA 924351B ZA 924351 A ZA924351 A ZA 924351A ZA 924351 A ZA924351 A ZA 924351A ZA 924351 B ZA924351 B ZA 924351B
Authority
ZA
South Africa
Prior art keywords
bleaching process
ozone bleaching
ozone
bleaching
Prior art date
Application number
ZA924351A
Other languages
English (en)
Inventor
Brian Greenwood
Greenwood Brian
Kaj Henricson
Henricson Kaj
Original Assignee
Ahlstroem 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24899960&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA924351(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy
Publication of ZA924351B publication Critical patent/ZA924351B/xx

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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
ZA924351A 1991-06-27 1992-06-15 Ozone bleaching process ZA924351B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72195891A 1991-06-27 1991-06-27

Publications (1)

Publication Number Publication Date
ZA924351B true ZA924351B (en) 1993-03-31

Family

ID=24899960

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA924351A ZA924351B (en) 1991-06-27 1992-06-15 Ozone bleaching process

Country Status (10)

Country Link
US (1) US5607545A (de)
EP (2) EP0577157B1 (de)
JP (1) JPH0781239B2 (de)
AU (1) AU1973692A (de)
CA (1) CA2102899C (de)
DE (2) DE69204461T2 (de)
FI (1) FI114719B (de)
MX (1) MX9203303A (de)
WO (1) WO1993000470A1 (de)
ZA (1) ZA924351B (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89516B (fi) 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
FI925558A (fi) * 1992-04-22 1993-10-23 Ahlstroem Oy Foerfarande och anordning foer blekning av massa
CA2078276C (en) * 1992-09-15 2004-05-25 Derek Hornsey Recovery of oxygen-rich gas from ozone bleaching processes
US6010594A (en) * 1993-03-03 2000-01-04 Ahlstrom Machinery Corporation Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
SE9301960L (sv) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Blekning av kemisk massa med peroxid vid övertryck
FR2719854B1 (fr) * 1994-05-11 1996-06-21 Atochem Elf Sa Procédé de préparation de pâtes à papier chimiques délignifiées et blanchies.
SE9402542D0 (sv) * 1994-07-20 1994-07-20 Kvaerner Pulping Tech Förfarande och anordning vid blekning med trycksatt peroxid
WO1996023929A1 (en) * 1995-01-31 1996-08-08 A. Ahlstrom Corporation Bleaching pulp with peroxide at superatmospheric pressure and in multiple stages
FI103818B (fi) * 1995-02-21 1999-09-30 Ahlstrom Machinery Oy Menetelmä massan valkaisemiseksi
DE19622421A1 (de) * 1996-06-04 1997-12-11 Fraunhofer Ges Forschung Verfahren zur Aufbereitung von Altholz
AU2312797A (en) 1996-03-26 1997-10-17 Sunds Defibrator Industries Ab Oxygen delignification of pulp in two stages
US5851407A (en) * 1996-12-04 1998-12-22 Applied Process Technolgy, Inc. Process and apparatus for oxidation of contaminants in water
US6024882A (en) * 1997-08-08 2000-02-15 Applied Process Technology, Inc. Process and apparatus for water decontamination
JP4362007B2 (ja) * 1997-08-08 2009-11-11 アプライド プロセス テクノロジー，インコーポレーテッド 水質浄化法および装置
US20050173082A1 (en) * 1998-08-24 2005-08-11 Arbozon Oy Ltd. Bleaching of medium consistency pulp with ozone without high shear mixing
SE9803474L (sv) * 1998-10-08 2000-04-09 Valmet Fibertech Ab Syrgasblekning av massa
SE522593C2 (sv) * 1999-07-06 2004-02-24 Kvaerner Pulping Tech System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material
JP2002069879A (ja) * 2000-09-04 2002-03-08 Nippon Paper Industries Co Ltd セルロース質繊維材料のパルプの漂白方法
SE532470C2 (sv) * 2008-05-13 2010-02-02 Metso Paper Inc Slutblekning av oxygendelignifierad massa med ozon, klordioxid och peroxid
SE538752C2 (en) * 2014-11-21 2016-11-08 Innventia Ab Process for the production of a treated pulp, treated pulp, and textile fibers produced from the treated pulp
CN111386367B (zh) 2017-12-20 2021-11-09 尤妮佳股份有限公司 制造再循环浆粕纤维的方法及装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI67413C (fi) * 1977-04-27 1985-03-11 Myrens Verksted As Foerfarande foer behandling av finfoerdelad fiberhaltig eller cellulosahaltig massa samt anordning foer utfoerande av foerfarandet
NO144711C (no) * 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen
AT380496B (de) * 1984-06-27 1986-05-26 Steyrermuehl Papier Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff
FI79361B (fi) * 1988-01-05 1989-08-31 Ahlstroem Oy Foerfarande och apparatur foer underlaettande av uttoemning av fallroer eller liknande och behandling av massa i sagda utrymme.
US4902381A (en) * 1988-12-09 1990-02-20 Kamyr, Inc. Method of bleaching pulp with ozone-chlorine mixtures
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
US5034095A (en) * 1989-06-01 1991-07-23 Oji Paper Co., Ltd. Apparatus and process for the delignification of cellulose pulp
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
US5141563A (en) * 1989-12-19 1992-08-25 Eltech Systems Corporation Molten salt stripping of electrode coatings
AT393701B (de) * 1989-12-22 1991-12-10 Schmidding Wilh Gmbh & Co Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
WO1993000470A1 (en) 1993-01-07
CA2102899A1 (en) 1992-12-28
EP0577157A3 (de) 1995-04-12
DE69204461T2 (de) 1996-03-07
FI935784A (fi) 1993-12-22
JPH0781239B2 (ja) 1995-08-30
DE69230034T2 (de) 2000-02-03
FI114719B (fi) 2004-12-15
AU1973692A (en) 1993-01-25
DE69230034D1 (de) 1999-10-28
EP0591264B1 (de) 1995-08-30
MX9203303A (es) 1992-12-01
EP0591264A1 (de) 1994-04-13
DE69204461D1 (de) 1995-10-05
CA2102899C (en) 2007-05-01
FI935784A0 (fi) 1993-12-22
EP0577157B1 (de) 1999-09-22
US5607545A (en) 1997-03-04
JPH06502229A (ja) 1994-03-10
EP0577157A2 (de) 1994-01-05

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