CA2723311A1 - Process for the bleaching of paper pulp - Google Patents

Process for the bleaching of paper pulp Download PDF

Info

Publication number
CA2723311A1
CA2723311A1 CA2723311A CA2723311A CA2723311A1 CA 2723311 A1 CA2723311 A1 CA 2723311A1 CA 2723311 A CA2723311 A CA 2723311A CA 2723311 A CA2723311 A CA 2723311A CA 2723311 A1 CA2723311 A1 CA 2723311A1
Authority
CA
Canada
Prior art keywords
bleaching
process according
pulp
paper pulp
weight
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.)
Abandoned
Application number
CA2723311A
Other languages
English (en)
French (fr)
Inventor
Pierre Dournel
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.)
Solvay SA
Original Assignee
Solvay SA
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 Solvay SA filed Critical Solvay SA
Publication of CA2723311A1 publication Critical patent/CA2723311A1/en
Abandoned legal-status Critical Current

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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA2723311A 2008-05-26 2009-05-25 Process for the bleaching of paper pulp Abandoned CA2723311A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08156934A EP2128331A1 (de) 2008-05-26 2008-05-26 Verfahren zum Bleichen von Papierzellstoff
EP08156934.5 2008-05-26
PCT/EP2009/056278 WO2009144190A1 (en) 2008-05-26 2009-05-25 Process for the bleaching of paper pulp

Publications (1)

Publication Number Publication Date
CA2723311A1 true CA2723311A1 (en) 2009-12-03

Family

ID=39878001

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2723311A Abandoned CA2723311A1 (en) 2008-05-26 2009-05-25 Process for the bleaching of paper pulp

Country Status (4)

Country Link
US (1) US20110067831A1 (de)
EP (2) EP2128331A1 (de)
CA (1) CA2723311A1 (de)
WO (1) WO2009144190A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010136550A1 (en) * 2009-05-29 2010-12-02 Solvay Sa Process for the bleaching of mechanical paper pulp

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006056A3 (fr) 1992-07-06 1994-05-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
FR2747407B1 (fr) * 1996-04-12 1998-05-07 Atochem Elf Sa Procede de delignification et de blanchiment de pates a papier chimiques
DE19614587A1 (de) * 1996-04-13 1997-10-16 Jaschinski Thomas Dipl Holzw Verfahren und Bleichlösung zum Bleichen von cellulosischen Faserstoffen
JPH108092A (ja) * 1996-06-21 1998-01-13 Mitsubishi Paper Mills Ltd 過酸化物漂白用安定化剤及びそれを用いた繊維系物質の漂白方法
US7052578B2 (en) * 2000-01-28 2006-05-30 Martin Marietta Magnesia Specialties, Inc. Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp
US7351764B2 (en) * 2004-03-31 2008-04-01 Nalco Company Methods to enhance brightness of pulp and optimize use of bleaching chemicals
FI120201B (fi) * 2004-05-12 2009-07-31 Kemira Oyj Uusi koostumus ja menetelmä kuitumateriaalin käsittelemiseksi
CN1978129B (zh) * 2005-12-02 2010-11-10 鸿富锦精密工业（深圳）有限公司 滚圆设备
FI119375B (fi) * 2007-02-02 2008-10-31 Kemira Oyj Uusi koostumus ja menetelmä kuitumateriaalin käsittelemiseksi

Also Published As

Publication number Publication date
WO2009144190A1 (en) 2009-12-03
US20110067831A1 (en) 2011-03-24
EP2286024A1 (de) 2011-02-23
EP2128331A1 (de) 2009-12-02

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Legal Events

Date Code Title Description
FZDE Dead

Effective date: 20140527