CA2332304C - Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps - Google Patents

Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps Download PDF

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Publication number
CA2332304C
CA2332304C CA002332304A CA2332304A CA2332304C CA 2332304 C CA2332304 C CA 2332304C CA 002332304 A CA002332304 A CA 002332304A CA 2332304 A CA2332304 A CA 2332304A CA 2332304 C CA2332304 C CA 2332304C
Authority
CA
Canada
Prior art keywords
pulp
peroxide
oxygen
lignin
pulps
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.)
Expired - Lifetime
Application number
CA002332304A
Other languages
English (en)
French (fr)
Other versions
CA2332304A1 (en
Inventor
Raymond C. Francis
Timothy D. Evans
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.)
National Silicates Ltd
Research Foundation of the State University of New York
Original Assignee
National Silicates Ltd
Research Foundation of the State University of New York
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 National Silicates Ltd, Research Foundation of the State University of New York filed Critical National Silicates Ltd
Publication of CA2332304A1 publication Critical patent/CA2332304A1/en
Application granted granted Critical
Publication of CA2332304C publication Critical patent/CA2332304C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00After-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
    • D21C9/10Bleaching ; Apparatus therefor
    • D21C9/147Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00After-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
    • D21C9/10Bleaching ; Apparatus therefor
    • D21C9/1026Other features in bleaching processes
    • D21C9/1036Use of compounds accelerating or improving the efficiency of the processes
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00After-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
    • D21C9/10Bleaching ; Apparatus therefor
    • D21C9/16Bleaching ; Apparatus therefor with per compounds
    • D21C9/163Bleaching ; 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)
CA002332304A 1998-05-15 1998-05-15 Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps Expired - Lifetime CA2332304C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/010070 WO1999060201A2 (en) 1998-05-15 1998-05-15 Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps

Publications (2)

Publication Number Publication Date
CA2332304A1 CA2332304A1 (en) 1999-11-25
CA2332304C true CA2332304C (en) 2005-01-11

Family

ID=22267079

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002332304A Expired - Lifetime CA2332304C (en) 1998-05-15 1998-05-15 Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps

Country Status (7)

Country Link
EP (1) EP1088130B1 (de)
AT (1) ATE263268T1 (de)
AU (1) AU7493898A (de)
CA (1) CA2332304C (de)
DE (1) DE69822893D1 (de)
MX (1) MXPA00011196A (de)
WO (1) WO1999060201A2 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557605B1 (fr) * 1983-12-29 1987-12-11 Atochem Procede de blanchiment de pates papetieres par le peroxyde d'hydrogene
US4915785A (en) * 1988-12-23 1990-04-10 C-I-L Inc. Single stage process for bleaching of pulp with an aqueous hydrogen peroxide bleaching composition containing magnesium sulphate and sodium silicate
SE500353C2 (sv) * 1992-10-26 1994-06-06 Sca Wifsta Oestrand Ab Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen

Also Published As

Publication number Publication date
MXPA00011196A (es) 2003-04-22
EP1088130A2 (de) 2001-04-04
ATE263268T1 (de) 2004-04-15
EP1088130B1 (de) 2004-03-31
CA2332304A1 (en) 1999-11-25
DE69822893D1 (de) 2004-05-06
AU7493898A (en) 1999-12-06
WO1999060201A2 (en) 1999-11-25
WO1999060201A3 (en) 2000-08-03

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Effective date: 20180515