BR112012020292A2 - pulp bleaching method - Google Patents

pulp bleaching method

Info

Publication number
BR112012020292A2
BR112012020292A2 BR112012020292A BR112012020292A BR112012020292A2 BR 112012020292 A2 BR112012020292 A2 BR 112012020292A2 BR 112012020292 A BR112012020292 A BR 112012020292A BR 112012020292 A BR112012020292 A BR 112012020292A BR 112012020292 A2 BR112012020292 A2 BR 112012020292A2
Authority
BR
Brazil
Prior art keywords
bleaching
pulp
treatment
conducted
oxidative
Prior art date
Application number
BR112012020292A
Other languages
Portuguese (pt)
Inventor
Patrick Notté
Thierry Jules Guilmin
Original Assignee
Dequest Ag
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 Dequest Ag filed Critical Dequest Ag
Publication of BR112012020292A2 publication Critical patent/BR112012020292A2/en

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
    • D21C9/1036—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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)

Abstract

método para branqueamento de polpa de celulose. a presente invenção refere-se a um método para branqueamento de polpa de celulose, em que um aminoácido ácido fosfônico é usado junto com um agente de branqueamento, reguladores do ph e tampões de ph para o tratamento de polpa celulósica em um meio aquoso. o agente de branqueamento pode ser representado por agentes de branqueamento oxidativo e redutivo. o tratamento de branqueamento oxidativo é conduzido em meio alcalino, ao passo que o tratamento redutivo é conduzido em meio ligeiramente ácido.method for bleaching pulp pulp. The present invention relates to a method for bleaching cellulose pulp, wherein a phosphonic acid amino acid is used together with a bleaching agent, ph regulators and ph buffers for the treatment of cellulosic pulp in an aqueous medium. The bleaching agent may be represented by oxidative and reductive bleaching agents. The oxidative bleaching treatment is conducted in alkaline medium, while the reductive treatment is conducted in slightly acidic medium.

BR112012020292A 2010-02-12 2011-02-14 pulp bleaching method BR112012020292A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10153474 2010-02-12
PCT/EP2011/052129 WO2011098599A1 (en) 2010-02-12 2011-02-14 Method for pulp bleaching

Publications (1)

Publication Number Publication Date
BR112012020292A2 true BR112012020292A2 (en) 2016-05-03

Family

ID=42111644

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012020292A BR112012020292A2 (en) 2010-02-12 2011-02-14 pulp bleaching method

Country Status (7)

Country Link
US (1) US20130042986A1 (en)
EP (1) EP2534296A1 (en)
JP (1) JP2013519801A (en)
BR (1) BR112012020292A2 (en)
CA (1) CA2789180A1 (en)
RU (1) RU2012137954A (en)
WO (1) WO2011098599A1 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434284B (en) 1980-05-07 1984-07-16 Mo Och Domsjoe Ab PROCEDURES FOR OXYGEN DELIGNIFICATION OF CHEMICAL CONSUMPED CELLULOSAMASSA TO WHICH AROMATIC DIAMINES ARE PROVIDED
US5759440A (en) 1989-07-20 1998-06-02 Interox (Societe Anonyme) Stabilized aqueuous solution of hydrogen peroxide and process for stabilizing an aqueous solution of hydrogen peroxide
JPH05182234A (en) 1991-12-28 1993-07-23 Japan Steel Works Ltd:The Optical pickup
US5616280A (en) * 1993-08-25 1997-04-01 Burlington Chemical Co., Inc. Bleaching composition
FI115470B (en) * 1996-02-19 2005-05-13 Kemira Oyj Process for the treatment of chemical cellulose material
BE1011785A3 (en) 1998-03-10 2000-01-11 Solvay Process for laundering and / or pasta delignification paper chemicals.
EP1179075A2 (en) 1999-05-12 2002-02-13 Xencor, Inc. Bacillus circulans xylanase mutants
EP1886976A1 (en) * 2006-08-09 2008-02-13 Thermphos Trading GmbH Method of scale inhibition
US20080115692A1 (en) 2006-11-17 2008-05-22 Halliburton Energy Services, Inc. Foamed resin compositions and methods of using foamed resin compositions in subterranean applications
EP1932850A1 (en) * 2006-12-11 2008-06-18 Thermphos Trading GmbH Phosphonate compounds
ZA200903684B (en) 2007-01-16 2010-08-25 Unilever Plc Bleaching of substrates
EP2082991A1 (en) 2008-01-22 2009-07-29 Thermphos Trading GmbH Method of Water Treatment

Also Published As

Publication number Publication date
CA2789180A1 (en) 2011-08-18
WO2011098599A1 (en) 2011-08-18
EP2534296A1 (en) 2012-12-19
RU2012137954A (en) 2014-03-20
JP2013519801A (en) 2013-05-30
US20130042986A1 (en) 2013-02-21

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 4A E 5A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2370 DE 07-06-2016 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.