SE0500434L - Behandling av slutblekt massa med i ett milt alkaliskt syrgassteg för att reducera eftergulning - Google Patents

Behandling av slutblekt massa med i ett milt alkaliskt syrgassteg för att reducera eftergulning

Info

Publication number
SE0500434L
SE0500434L SE0500434A SE0500434A SE0500434L SE 0500434 L SE0500434 L SE 0500434L SE 0500434 A SE0500434 A SE 0500434A SE 0500434 A SE0500434 A SE 0500434A SE 0500434 L SE0500434 L SE 0500434L
Authority
SE
Sweden
Prior art keywords
treatment
yellowing
mild alkaline
bleached pulp
alkaline oxygen
Prior art date
Application number
SE0500434A
Other languages
English (en)
Swedish (sv)
Other versions
SE528066C2 (sv
Inventor
Mikael Lindstroem
Martin Ragnar
Helena Strand
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE0500434A priority Critical patent/SE0500434L/xx
Priority to PCT/SE2006/000112 priority patent/WO2006091140A1/en
Priority to BRPI0608555-5A priority patent/BRPI0608555A2/pt
Publication of SE528066C2 publication Critical patent/SE528066C2/sv
Publication of SE0500434L publication Critical patent/SE0500434L/xx
Priority to FI20077130A priority patent/FI20077130A/fi

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
    • D21C9/1047—Conserving the bleached pulp
    • 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
    • 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
    • D21C9/12—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)
SE0500434A 2005-02-24 2005-02-24 Behandling av slutblekt massa med i ett milt alkaliskt syrgassteg för att reducera eftergulning SE0500434L (sv)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE0500434A SE0500434L (sv) 2005-02-24 2005-02-24 Behandling av slutblekt massa med i ett milt alkaliskt syrgassteg för att reducera eftergulning
PCT/SE2006/000112 WO2006091140A1 (en) 2005-02-24 2006-01-26 Method for treatment of bleached chemical pulp
BRPI0608555-5A BRPI0608555A2 (pt) 2005-02-24 2006-01-26 método para o tratamento de polpa quìmica alvejada
FI20077130A FI20077130A (fi) 2005-02-24 2007-09-20 Menetelmä valkaistun kemiallisen massan käsittelemiseksi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0500434A SE0500434L (sv) 2005-02-24 2005-02-24 Behandling av slutblekt massa med i ett milt alkaliskt syrgassteg för att reducera eftergulning

Publications (2)

Publication Number Publication Date
SE528066C2 SE528066C2 (sv) 2006-08-22
SE0500434L true SE0500434L (sv) 2006-08-22

Family

ID=36889322

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0500434A SE0500434L (sv) 2005-02-24 2005-02-24 Behandling av slutblekt massa med i ett milt alkaliskt syrgassteg för att reducera eftergulning

Country Status (4)

Country Link
BR (1) BRPI0608555A2 (xx)
FI (1) FI20077130A (xx)
SE (1) SE0500434L (xx)
WO (1) WO2006091140A1 (xx)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA632280A (en) * 1958-07-02 1961-12-05 Kimberly-Clark Corporation Manufacture of bleached cellulosic products resistant to brightness reversion
GB1062734A (en) * 1963-03-21 1967-03-22 Mo Och Domsjoe Ab Improvements in or relating to bleaching cellulose pulp
JP2004052115A (ja) * 2002-07-16 2004-02-19 Nippon Paper Industries Co Ltd ケミカルパルプの退色性改善方法

Also Published As

Publication number Publication date
WO2006091140A1 (en) 2006-08-31
SE528066C2 (sv) 2006-08-22
FI20077130A (fi) 2007-09-20
BRPI0608555A2 (pt) 2010-01-12

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Legal Events

Date Code Title Description
NUG Patent has lapsed