ATE216741T1 - Delignifizierung von zellstoff mit sauerstoff - Google Patents

Delignifizierung von zellstoff mit sauerstoff

Info

Publication number
ATE216741T1
ATE216741T1 AT98900506T AT98900506T ATE216741T1 AT E216741 T1 ATE216741 T1 AT E216741T1 AT 98900506 T AT98900506 T AT 98900506T AT 98900506 T AT98900506 T AT 98900506T AT E216741 T1 ATE216741 T1 AT E216741T1
Authority
AT
Austria
Prior art keywords
oxygen
stage
pulp
reducing agent
delignification
Prior art date
Application number
AT98900506T
Other languages
English (en)
Inventor
Yonghao Ni
Heiningen Adriaan R P Van
Guo Jun Kang
Anastasios Skothos
Original Assignee
Univ New Brunswick
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 Univ New Brunswick filed Critical Univ New Brunswick
Application granted granted Critical
Publication of ATE216741T1 publication Critical patent/ATE216741T1/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
    • D21C9/147—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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
AT98900506T 1997-01-21 1998-01-19 Delignifizierung von zellstoff mit sauerstoff ATE216741T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78621697A 1997-01-21 1997-01-21
PCT/CA1998/000020 WO1998031872A1 (en) 1997-01-21 1998-01-19 Oxygen delignification process of pulp

Publications (1)

Publication Number Publication Date
ATE216741T1 true ATE216741T1 (de) 2002-05-15

Family

ID=25137931

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98900506T ATE216741T1 (de) 1997-01-21 1998-01-19 Delignifizierung von zellstoff mit sauerstoff

Country Status (6)

Country Link
EP (1) EP0960235B1 (de)
AT (1) ATE216741T1 (de)
AU (1) AU5546498A (de)
CA (1) CA2278188C (de)
DE (1) DE69805056T2 (de)
WO (1) WO1998031872A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
BR102014027199B1 (pt) * 2014-07-14 2022-10-04 Nalco Company Método para aprimorar a fabricação de polpa de soda ou kraft
US20180030651A1 (en) * 2016-07-27 2018-02-01 Ecolab USA, Inc. Method and compositions for oxygen delignification of chemical pulp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809332A1 (de) * 1988-03-19 1989-10-05 Degussa Mehrstufiges verfahren zur bleiche von holzstoffen
FR2692917A1 (fr) * 1992-06-30 1993-12-31 Air Liquide Procédé de blanchiment d'une pâte papetière chimique.
SE9402726L (sv) * 1994-08-16 1995-08-28 Kvaerner Pulping Tech Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg
CA2157154A1 (en) * 1994-08-29 1996-03-01 Gordon Leary Bleaching of high-yield pulps with oxygen

Also Published As

Publication number Publication date
AU5546498A (en) 1998-08-07
DE69805056D1 (de) 2002-05-29
DE69805056T2 (de) 2002-11-14
WO1998031872A1 (en) 1998-07-23
CA2278188C (en) 2003-11-25
EP0960235B1 (de) 2002-04-24
CA2278188A1 (en) 1998-07-23
EP0960235A1 (de) 1999-12-01

Similar Documents

Publication Publication Date Title
AU560277B2 (en) Bleaching cellulose with oxidising agents and microwaves
SE8504236L (sv) Forbettrad oxidativ extraktion
AU3404099A (en) Method of producing lignocellulosic pulp from non-woody species
BR9507286A (pt) Processo para a produção de polpa celulósica alvejada
SE8904313D0 (sv) Vaeteperoxid-blekningsprocess
CA2082185C (en) Protease catalyzed treatments of lignocellulose materials
DE60144190D1 (de) Verfahren zum bleichen von zellstoff
CA2169108A1 (en) Continuous cooking with white liquor pretreatment
DE69630803D1 (de) Sauerstoffdelignifizierung von lignocelluloschischem zellstoff in zwei stufen
NZ298222A (en) Bleaching filled paper with hydrogen peroxide, sodium borohydride, and/or sodium hydrosulphite
ATE216741T1 (de) Delignifizierung von zellstoff mit sauerstoff
BR9204097A (pt) Processo para obtener melhorada,seletividade de deslignificacao de polpa durante a deslignificacao com oxigenio,de elevada consistencia
SE9700992D0 (sv) Method of bleaching kraft pulp
SE0004438D0 (sv) Enviormentally-friendly fiberline for producing bleached chemical pulp
SE9702583L (sv) Förfarande för massaframställning
SE8604852D0 (sv) Delignification and bleaching of a cellulose pulp with an alkali-oxygen-hypochlorite extraction
NO924080D0 (no) Vaskepresse for oksygen-delignifisering
ZA991036B (en) Pulping process.
SE9203366D0 (sv) Foerfarande vid delignifiering och/eller blekning av cellulosamassa
GB2361481A (en) Steam explosion treatement with addition of chemicals
TH29889A (th) วิธีการฟอกจางเยื่อ
SE9604217D0 (sv) Method and apparatus for delignifying chemical pu lp
UA36728A (uk) Спосіб виробництва целюлози для хімічної переробки
SE0101828D0 (sv) Method and apparatus for treating pulp

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee