SE514947C2 - Blekning av massa med ozon innefattande oxalsyratillsats - Google Patents

Blekning av massa med ozon innefattande oxalsyratillsats

Info

Publication number
SE514947C2
SE514947C2 SE9803052A SE9803052A SE514947C2 SE 514947 C2 SE514947 C2 SE 514947C2 SE 9803052 A SE9803052 A SE 9803052A SE 9803052 A SE9803052 A SE 9803052A SE 514947 C2 SE514947 C2 SE 514947C2
Authority
SE
Sweden
Prior art keywords
pulp
ozone
bleaching
oxalic acid
filtrate
Prior art date
Application number
SE9803052A
Other languages
English (en)
Swedish (sv)
Other versions
SE9803052L (sv
SE9803052D0 (sv
Inventor
Monica Bokstroem
Original Assignee
Valmet Fibertech Ab
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 Fibertech Ab filed Critical Valmet Fibertech Ab
Priority to SE9803052A priority Critical patent/SE514947C2/sv
Publication of SE9803052D0 publication Critical patent/SE9803052D0/xx
Priority to BR9913584-1A priority patent/BR9913584A/pt
Priority to PCT/SE1999/001394 priority patent/WO2000014327A1/fr
Priority to JP2000569058A priority patent/JP2002524668A/ja
Priority to US09/786,741 priority patent/US6458242B1/en
Priority to EP99968691A priority patent/EP1123437A1/fr
Publication of SE9803052L publication Critical patent/SE9803052L/
Publication of SE514947C2 publication Critical patent/SE514947C2/sv

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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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)
SE9803052A 1998-09-09 1998-09-09 Blekning av massa med ozon innefattande oxalsyratillsats SE514947C2 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9803052A SE514947C2 (sv) 1998-09-09 1998-09-09 Blekning av massa med ozon innefattande oxalsyratillsats
BR9913584-1A BR9913584A (pt) 1998-09-09 1999-08-18 Processo para branqueamento eficiente com ozÈnio
PCT/SE1999/001394 WO2000014327A1 (fr) 1998-09-09 1999-08-18 Procede de blanchiment a l'ozone comprenant une addition d'acide oxalique
JP2000569058A JP2002524668A (ja) 1998-09-09 1999-08-18 シュウ酸の添加を含むオゾン漂白法
US09/786,741 US6458242B1 (en) 1998-09-09 1999-08-18 Ozone bleaching process using oxalic acid addition
EP99968691A EP1123437A1 (fr) 1998-09-09 1999-08-18 Procede de blanchiment a l'ozone comprenant une addition d'acide oxalique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9803052A SE514947C2 (sv) 1998-09-09 1998-09-09 Blekning av massa med ozon innefattande oxalsyratillsats

Publications (3)

Publication Number Publication Date
SE9803052D0 SE9803052D0 (sv) 1998-09-09
SE9803052L SE9803052L (sv) 2000-03-10
SE514947C2 true SE514947C2 (sv) 2001-05-21

Family

ID=20412536

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9803052A SE514947C2 (sv) 1998-09-09 1998-09-09 Blekning av massa med ozon innefattande oxalsyratillsats

Country Status (6)

Country Link
US (1) US6458242B1 (fr)
EP (1) EP1123437A1 (fr)
JP (1) JP2002524668A (fr)
BR (1) BR9913584A (fr)
SE (1) SE514947C2 (fr)
WO (1) WO2000014327A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070131364A1 (en) * 2005-12-14 2007-06-14 University Of Maine Process for treating a cellulose-lignin pulp
US20100224336A1 (en) * 2005-12-14 2010-09-09 University Of Maine System Board Of Trustees Process of bleaching a wood pulp
SG172284A1 (en) * 2008-12-19 2011-07-28 Xyleco Inc Processing biomass
MX355595B (es) * 2011-08-25 2018-04-24 Tersano Inc Tratamiento de agua para prolongar la vida media del ozono.
FR3007044B1 (fr) * 2013-06-13 2016-01-15 Air Liquide Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium
US10816106B2 (en) * 2014-12-23 2020-10-27 Masco Canada Limited Cartridge temperature limit control mechanism
SE2230380A1 (en) * 2022-11-24 2024-05-25 Valmet Oy Method for handling filtrates in a process for producing bleached cellulose pulp from recycled textile material

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455607A (en) * 1977-10-03 1979-05-02 Kogyo Gijutsuin Bleaching of pulp by liquid phase ozone
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
US4229252A (en) * 1979-01-11 1980-10-21 Weyerhaeuser Company Additives for ozone bleaching
EP0564443A1 (fr) 1992-03-15 1993-10-06 Kamyr, Inc. Traitement d'éffluents de blanchiment
SE470234B (sv) 1992-05-13 1993-12-13 Kamyr Ab Sätt vid blekning av cellulosahaltigt fibermaterial med ozon i närvaro av en organisk förening
SE500113C2 (sv) * 1992-07-09 1994-04-18 Kamyr Ab Sätt vid blekning av massa för omhändertagande av utlösta metaller
SE501253C2 (sv) * 1993-06-08 1994-12-19 Kvaerner Pulping Tech Klorfri blekning av kemisk pappersmassa

Also Published As

Publication number Publication date
SE9803052L (sv) 2000-03-10
WO2000014327A1 (fr) 2000-03-16
BR9913584A (pt) 2001-06-05
US6458242B1 (en) 2002-10-01
EP1123437A1 (fr) 2001-08-16
SE9803052D0 (sv) 1998-09-09
JP2002524668A (ja) 2002-08-06

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Legal Events

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