EA013901B1 - Отбеливание целлюлозы - Google Patents

Отбеливание целлюлозы Download PDF

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Publication number
EA013901B1
EA013901B1 EA200970367A EA200970367A EA013901B1 EA 013901 B1 EA013901 B1 EA 013901B1 EA 200970367 A EA200970367 A EA 200970367A EA 200970367 A EA200970367 A EA 200970367A EA 013901 B1 EA013901 B1 EA 013901B1
Authority
EA
Eurasian Patent Office
Prior art keywords
chlorine dioxide
bleaching
stage
final
cellulose
Prior art date
Application number
EA200970367A
Other languages
English (en)
Russian (ru)
Other versions
EA200970367A1 (ru
Inventor
Магнус Бьерклунд
Томас Кристофер Грескик
Хокан Фегерстен
Original Assignee
Акцо Нобель Н.В.
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=37807769&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EA013901(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Акцо Нобель Н.В. filed Critical Акцо Нобель Н.В.
Publication of EA200970367A1 publication Critical patent/EA200970367A1/ru
Publication of EA013901B1 publication Critical patent/EA013901B1/ru

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
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
EA200970367A 2006-10-11 2007-09-06 Отбеливание целлюлозы EA013901B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06122119 2006-10-11
PCT/SE2007/050630 WO2008044988A1 (fr) 2006-10-11 2007-09-06 Blanchiment de la pâte à papier

Publications (2)

Publication Number Publication Date
EA200970367A1 EA200970367A1 (ru) 2009-08-28
EA013901B1 true EA013901B1 (ru) 2010-08-30

Family

ID=37807769

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200970367A EA013901B1 (ru) 2006-10-11 2007-09-06 Отбеливание целлюлозы

Country Status (12)

Country Link
EP (1) EP2082096B1 (fr)
AR (1) AR063160A1 (fr)
BR (1) BRPI0719893A2 (fr)
CA (1) CA2665969C (fr)
CL (1) CL2007002906A1 (fr)
EA (1) EA013901B1 (fr)
ES (1) ES2403371T3 (fr)
NO (1) NO20091815L (fr)
PT (1) PT2082096E (fr)
UY (1) UY30634A1 (fr)
WO (1) WO2008044988A1 (fr)
ZA (1) ZA200903205B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20105862A0 (fi) 2010-08-18 2010-08-18 Bo Akademi University Menetelmä hekseeniuronihappojen poistamiseksi
PT3030710T (pt) 2013-08-09 2017-11-17 Novozymes As Resumo

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501374A (en) * 1968-12-26 1970-03-17 Hooker Chemical Corp Sequential bleaching of kraft pulp with chlorine dioxide and chlorine
US5030324A (en) * 1990-01-29 1991-07-09 Champion International Corporation Sequential bleaching procedure using chlorine and chlorine dioxide in a first chlorination stage of a multistage bleaching process
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
EP0940498A1 (fr) * 1998-03-06 1999-09-08 Ahlstrom Machinery Oy Procédé pour le traitement de pâte à papier
EP1270805A2 (fr) * 2001-06-06 2003-01-02 Kvaerner Pulping Ab Réduction du chlore lié organiquement formé dans le blanchiment par le dioxyde de chlore
US6776876B1 (en) * 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
US20060201642A1 (en) * 2005-03-08 2006-09-14 Andritz Inc. Methods of treating chemical cellulose pulp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501374A (en) * 1968-12-26 1970-03-17 Hooker Chemical Corp Sequential bleaching of kraft pulp with chlorine dioxide and chlorine
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
US5030324A (en) * 1990-01-29 1991-07-09 Champion International Corporation Sequential bleaching procedure using chlorine and chlorine dioxide in a first chlorination stage of a multistage bleaching process
US6776876B1 (en) * 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
EP0940498A1 (fr) * 1998-03-06 1999-09-08 Ahlstrom Machinery Oy Procédé pour le traitement de pâte à papier
EP1270805A2 (fr) * 2001-06-06 2003-01-02 Kvaerner Pulping Ab Réduction du chlore lié organiquement formé dans le blanchiment par le dioxyde de chlore
US20060201642A1 (en) * 2005-03-08 2006-09-14 Andritz Inc. Methods of treating chemical cellulose pulp

Also Published As

Publication number Publication date
CA2665969A1 (fr) 2008-04-17
UY30634A1 (es) 2007-11-30
AR063160A1 (es) 2008-12-30
BRPI0719893A2 (pt) 2014-05-06
NO20091815L (no) 2009-07-10
EP2082096B1 (fr) 2013-02-20
PT2082096E (pt) 2013-04-26
CA2665969C (fr) 2016-04-12
EA200970367A1 (ru) 2009-08-28
CL2007002906A1 (es) 2008-05-02
WO2008044988A1 (fr) 2008-04-17
ES2403371T3 (es) 2013-05-17
EP2082096A1 (fr) 2009-07-29
ZA200903205B (en) 2010-03-31

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Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ BY KZ KG MD TJ TM

PC4A Registration of transfer of a eurasian patent by assignment
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): RU