CL2007002906A1 - Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca - Google Patents

Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca

Info

Publication number
CL2007002906A1
CL2007002906A1 CL2007002906A CL2007002906A CL2007002906A1 CL 2007002906 A1 CL2007002906 A1 CL 2007002906A1 CL 2007002906 A CL2007002906 A CL 2007002906A CL 2007002906 A CL2007002906 A CL 2007002906A CL 2007002906 A1 CL2007002906 A1 CL 2007002906A1
Authority
CL
Chile
Prior art keywords
whitening
pulp
stages
content
chlorine dioxide
Prior art date
Application number
CL2007002906A
Other languages
English (en)
Inventor
Magnus Greschik Thom Bjorklund
Original Assignee
Akzo Nobel Nv
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=CL2007002906(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Akzo Nobel Nv filed Critical Akzo Nobel Nv
Publication of CL2007002906A1 publication Critical patent/CL2007002906A1/es

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)
CL2007002906A 2006-10-11 2007-10-09 Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca CL2007002906A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06122119 2006-10-11

Publications (1)

Publication Number Publication Date
CL2007002906A1 true CL2007002906A1 (es) 2008-05-02

Family

ID=37807769

Family Applications (1)

Application Number Title Priority Date Filing Date
CL2007002906A CL2007002906A1 (es) 2006-10-11 2007-10-09 Proceso para blanquear pulpa derivada de un proceso de pulpeo alcalino con un contenido de acido hexenuronico previo a la etapa de blanqueo final que comprende tres etapas de dioxido de cloro con un 40 a 60%, 30 a 55%, 4 a 20%, respectivamente, de ca

Country Status (12)

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

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
US9970157B2 (en) 2013-08-09 2018-05-15 Novozymes A/S Reducing content of hexenuronic acids in cellulosic pulp

Family Cites Families (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
FI119383B (fi) * 1998-03-06 2008-10-31 Andritz Oy Menetelmä massan käsittelemiseksi
JP2004522008A (ja) * 2001-06-06 2004-07-22 クヴアナ・パルピング・アクチボラグ 二酸化塩素漂白で形成された有機結合塩素の低減
US20060201642A1 (en) * 2005-03-08 2006-09-14 Andritz Inc. Methods of treating chemical cellulose pulp

Also Published As

Publication number Publication date
EA013901B1 (ru) 2010-08-30
PT2082096E (pt) 2013-04-26
CA2665969C (en) 2016-04-12
ZA200903205B (en) 2010-03-31
CA2665969A1 (en) 2008-04-17
EP2082096B1 (en) 2013-02-20
NO20091815L (no) 2009-07-10
EP2082096A1 (en) 2009-07-29
UY30634A1 (es) 2007-11-30
WO2008044988A1 (en) 2008-04-17
BRPI0719893A2 (pt) 2014-05-06
AR063160A1 (es) 2008-12-30
EA200970367A1 (ru) 2009-08-28
ES2403371T3 (es) 2013-05-17

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