BR112012025085A2 - método para reduzir o teor de metais da polpa branqueada enquanto reduzindo os custos de branqueamento em um processo de polpação - Google Patents

método para reduzir o teor de metais da polpa branqueada enquanto reduzindo os custos de branqueamento em um processo de polpação

Info

Publication number
BR112012025085A2
BR112012025085A2 BR112012025085A BR112012025085A BR112012025085A2 BR 112012025085 A2 BR112012025085 A2 BR 112012025085A2 BR 112012025085 A BR112012025085 A BR 112012025085A BR 112012025085 A BR112012025085 A BR 112012025085A BR 112012025085 A2 BR112012025085 A2 BR 112012025085A2
Authority
BR
Brazil
Prior art keywords
reduce
metal content
pulping process
bleached pulp
reducing bleaching
Prior art date
Application number
BR112012025085A
Other languages
English (en)
Other versions
BR112012025085B1 (pt
Inventor
Michael M Blackstone
Original Assignee
Chemstone Inc
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 Chemstone Inc filed Critical Chemstone Inc
Publication of BR112012025085A2 publication Critical patent/BR112012025085A2/pt
Publication of BR112012025085B1 publication Critical patent/BR112012025085B1/pt

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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/11—Halides
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BR112012025085-0A 2010-03-31 2011-02-23 Método de diminuição da quantidade de oxidante requerido por um processo de polpação ou de produção de papel BR112012025085B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/751,143 2010-03-31
US12/751,143 US20110240239A1 (en) 2010-03-31 2010-03-31 Methods to Reduce Metals Content of Bleached Pulp While Reducing Bleaching Cost in a Chemical Pulping Process
PCT/US2011/025845 WO2011126613A2 (en) 2010-03-31 2011-02-23 Methods to reduce metals content of bleached pulp while reducing bleaching cost in a chemical pulping process

Publications (2)

Publication Number Publication Date
BR112012025085A2 true BR112012025085A2 (pt) 2016-06-21
BR112012025085B1 BR112012025085B1 (pt) 2020-03-17

Family

ID=44708259

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012025085-0A BR112012025085B1 (pt) 2010-03-31 2011-02-23 Método de diminuição da quantidade de oxidante requerido por um processo de polpação ou de produção de papel

Country Status (7)

Country Link
US (1) US20110240239A1 (pt)
EP (1) EP2553165B1 (pt)
BR (1) BR112012025085B1 (pt)
CA (1) CA2795150A1 (pt)
ES (1) ES2726053T3 (pt)
PT (1) PT2553165T (pt)
WO (1) WO2011126613A2 (pt)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5234466A (en) * 1992-07-24 1993-08-10 Peach State Labs, Inc. Lowering of the pH of textile processing solutions by adding urea sulfate as a pH adjusting agent
US7029553B1 (en) 1992-07-24 2006-04-18 Peach State Labs, Inc. Urea sulfate and urea hydrochloride in paper and pulp processing
US5672279A (en) 1992-07-24 1997-09-30 Peach State Labs, Inc. Method for using urea hydrochloride
CA2398329A1 (en) * 2001-08-20 2003-02-20 Hercules Incorporated Process for purifying sand
WO2005045127A1 (en) * 2003-11-07 2005-05-19 Commonwealth Scientific And Industrial Research Organisation A method for bleaching lignocellulosic materials

Also Published As

Publication number Publication date
CA2795150A1 (en) 2011-10-13
EP2553165A2 (en) 2013-02-06
ES2726053T3 (es) 2019-10-01
EP2553165A4 (en) 2016-08-24
EP2553165B1 (en) 2019-03-20
WO2011126613A3 (en) 2012-01-12
WO2011126613A2 (en) 2011-10-13
US20110240239A1 (en) 2011-10-06
BR112012025085B1 (pt) 2020-03-17
PT2553165T (pt) 2019-05-30

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/02/2011, OBSERVADAS AS CONDICOES LEGAIS.