CA2372069C - Process for bleaching chemical pulps with low organic halogen compounds content - Google Patents

Process for bleaching chemical pulps with low organic halogen compounds content Download PDF

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Publication number
CA2372069C
CA2372069C CA2372069A CA2372069A CA2372069C CA 2372069 C CA2372069 C CA 2372069C CA 2372069 A CA2372069 A CA 2372069A CA 2372069 A CA2372069 A CA 2372069A CA 2372069 C CA2372069 C CA 2372069C
Authority
CA
Canada
Prior art keywords
bleaching
organic halogen
halogen compounds
pulp
chemical 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
CA2372069A
Other languages
English (en)
French (fr)
Other versions
CA2372069A1 (en
Inventor
Silvia Maria Pasquali
Guilherme Antonio Tedeschi De Araujo
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.)
ARACRUZ CELULOSE SA
Original Assignee
ARACRUZ CELULOSE 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 ARACRUZ CELULOSE SA filed Critical ARACRUZ CELULOSE SA
Publication of CA2372069A1 publication Critical patent/CA2372069A1/en
Application granted granted Critical
Publication of CA2372069C publication Critical patent/CA2372069C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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)
CA2372069A 1999-04-27 2000-04-27 Process for bleaching chemical pulps with low organic halogen compounds content Expired - Lifetime CA2372069C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BRPI9901291-0 1999-04-27
BR9901291A BR9901291B1 (pt) 1999-04-27 1999-04-27 processo para branqueamento de polpas quìmicas de baixa consistência.
PCT/BR2000/000038 WO2000065148A1 (en) 1999-04-27 2000-04-27 Process for bleaching chemical pulps with low organic halogen compounds content

Publications (2)

Publication Number Publication Date
CA2372069A1 CA2372069A1 (en) 2000-11-02
CA2372069C true CA2372069C (en) 2011-06-21

Family

ID=4072226

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2372069A Expired - Lifetime CA2372069C (en) 1999-04-27 2000-04-27 Process for bleaching chemical pulps with low organic halogen compounds content

Country Status (9)

Country Link
EP (1) EP1180172B1 (no)
BR (1) BR9901291B1 (no)
CA (1) CA2372069C (no)
ES (1) ES2501141T3 (no)
IS (1) IS6132A (no)
NO (1) NO331632B1 (no)
PT (1) PT1180172E (no)
WO (1) WO2000065148A1 (no)
ZA (1) ZA200108811B (no)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099186A1 (en) * 2001-06-06 2002-12-12 Kvaerner Pulping Ab Reduction of organically bound chlorine formed in chlorine dioxide bleaching

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720577A (en) * 1970-05-25 1973-03-13 Int Paper Co Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence
SU1141128A1 (ru) * 1983-12-08 1985-02-23 Центральный научно-исследовательский институт бумаги Способ отбелки целлюлозы
US4959124A (en) 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
DE69026105T2 (de) * 1989-10-19 1996-09-26 Univ North Carolina Hochleistendes verfahren zum bleichen von zellstoff mit chlordioxyd
US5030324A (en) 1990-01-29 1991-07-09 Champion International Corporation Sequential bleaching procedure using chlorine and chlorine dioxide in a first chlorination stage of a multistage bleaching process
SE9000340L (sv) 1990-01-31 1991-08-01 Eka Nobel Ab Foerfarande vid blekning av lignocellulosahaltigt material

Also Published As

Publication number Publication date
BR9901291A (pt) 2000-11-07
WO2000065148A1 (en) 2000-11-02
NO331632B1 (no) 2012-02-13
NO20015241D0 (no) 2001-10-26
NO20015241L (no) 2001-11-27
EP1180172A1 (en) 2002-02-20
PT1180172E (pt) 2014-09-25
ES2501141T3 (es) 2014-10-01
ZA200108811B (en) 2002-10-25
IS6132A (is) 2001-10-26
EP1180172B1 (en) 2014-07-02
CA2372069A1 (en) 2000-11-02
BR9901291B1 (pt) 2011-11-01

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Effective date: 20200427