ES2726053T3 - Métodos para reducir el contenido de metales de la pulpa blanqueada mientras se reduce el coste del blanqueamiento en un proceso de pulpa químico - Google Patents

Métodos para reducir el contenido de metales de la pulpa blanqueada mientras se reduce el coste del blanqueamiento en un proceso de pulpa químico Download PDF

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Publication number
ES2726053T3
ES2726053T3 ES11766310T ES11766310T ES2726053T3 ES 2726053 T3 ES2726053 T3 ES 2726053T3 ES 11766310 T ES11766310 T ES 11766310T ES 11766310 T ES11766310 T ES 11766310T ES 2726053 T3 ES2726053 T3 ES 2726053T3
Authority
ES
Spain
Prior art keywords
pulp
bleaching
oxidant
urea
amount
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
ES11766310T
Other languages
English (en)
Spanish (es)
Inventor
Michael Blackstone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemstone Inc
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
Application granted granted Critical
Publication of ES2726053T3 publication Critical patent/ES2726053T3/es
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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)
ES11766310T 2010-03-31 2011-02-23 Métodos para reducir el contenido de metales de la pulpa blanqueada mientras se reduce el coste del blanqueamiento en un proceso de pulpa químico Active ES2726053T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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 (1)

Publication Number Publication Date
ES2726053T3 true ES2726053T3 (es) 2019-10-01

Family

ID=44708259

Family Applications (1)

Application Number Title Priority Date Filing Date
ES11766310T Active ES2726053T3 (es) 2010-03-31 2011-02-23 Métodos para reducir el contenido de metales de la pulpa blanqueada mientras se reduce el coste del blanqueamiento en un proceso de pulpa químico

Country Status (7)

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

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 (de) 2013-02-06
EP2553165A4 (de) 2016-08-24
EP2553165B1 (de) 2019-03-20
WO2011126613A3 (en) 2012-01-12
WO2011126613A2 (en) 2011-10-13
US20110240239A1 (en) 2011-10-06
BR112012025085B1 (pt) 2020-03-17
BR112012025085A2 (pt) 2016-06-21
PT2553165T (pt) 2019-05-30

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