ATA90412002A - Bleichen von pulpe mit chlordioxid - Google Patents

Bleichen von pulpe mit chlordioxid

Info

Publication number
ATA90412002A
ATA90412002A AT0904102A AT90412002A ATA90412002A AT A90412002 A ATA90412002 A AT A90412002A AT 0904102 A AT0904102 A AT 0904102A AT 90412002 A AT90412002 A AT 90412002A AT A90412002 A ATA90412002 A AT A90412002A
Authority
AT
Austria
Prior art keywords
chlorine dioxide
bleaching pulp
bleaching
pulp
chlorine
Prior art date
Application number
AT0904102A
Other languages
English (en)
Other versions
AT412482B (de
Original Assignee
Metso Paper Inc
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 Metso Paper Inc filed Critical Metso Paper Inc
Publication of ATA90412002A publication Critical patent/ATA90412002A/de
Application granted granted Critical
Publication of AT412482B publication Critical patent/AT412482B/de

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
AT0904102A 2001-03-20 2002-02-19 Bleichen von pulpe mit chlordioxid AT412482B (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0100977A SE518692C2 (sv) 2001-03-20 2001-03-20 Blekning av massa med klordioxid
PCT/SE2002/000287 WO2002075046A1 (en) 2001-03-20 2002-02-19 Bleaching of pulp with chlorine dioxide

Publications (2)

Publication Number Publication Date
ATA90412002A true ATA90412002A (de) 2004-08-15
AT412482B AT412482B (de) 2005-03-25

Family

ID=20283448

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0904102A AT412482B (de) 2001-03-20 2002-02-19 Bleichen von pulpe mit chlordioxid

Country Status (6)

Country Link
US (1) US20040112556A1 (de)
AT (1) AT412482B (de)
CA (1) CA2435813C (de)
FI (1) FI120652B (de)
SE (1) SE518692C2 (de)
WO (1) WO2002075046A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7976676B2 (en) * 2006-12-18 2011-07-12 International Paper Company Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base
US7976677B2 (en) 2006-12-18 2011-07-12 International Paper Company Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base
SE532370C2 (sv) * 2008-02-28 2009-12-29 Metso Paper Inc Metod för blekning av en massa
WO2016137797A1 (en) * 2015-02-23 2016-09-01 SomniQ, Inc. Empathetic user interface, systems, and methods for interfacing with empathetic computing device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238281A (en) * 1979-04-30 1980-12-09 Canadian International Paper Company Simplified bleaching process
SE466062B (sv) * 1990-04-30 1991-12-09 Sunds Defibrator Ind Ab Blekning av kemisk massa
US5938892A (en) * 1991-01-28 1999-08-17 Champion International Corporation Process for recycling bleach plant filtrate
US6706143B1 (en) * 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
US6475338B1 (en) * 1996-06-05 2002-11-05 Andritz Inc. Method of minimizing transition metal ions during chemical pulping in a digester by adding chelating agent to the digester

Also Published As

Publication number Publication date
SE518692C2 (sv) 2002-11-05
SE0100977D0 (sv) 2001-03-20
FI20031338A (fi) 2003-09-18
US20040112556A1 (en) 2004-06-17
CA2435813C (en) 2010-04-27
WO2002075046A1 (en) 2002-09-26
SE0100977L (sv) 2002-09-21
AT412482B (de) 2005-03-25
FI120652B (fi) 2010-01-15
CA2435813A1 (en) 2002-09-26

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Legal Events

Date Code Title Description
MM01 Lapse because of not paying annual fees

Effective date: 20120815