BR9007993A - Processo para alvejar polpa quimica - Google Patents

Processo para alvejar polpa quimica

Info

Publication number
BR9007993A
BR9007993A BR909007993A BR9007993A BR9007993A BR 9007993 A BR9007993 A BR 9007993A BR 909007993 A BR909007993 A BR 909007993A BR 9007993 A BR9007993 A BR 9007993A BR 9007993 A BR9007993 A BR 9007993A
Authority
BR
Brazil
Prior art keywords
chemical pulp
white chemical
white
pulp
chemical
Prior art date
Application number
BR909007993A
Other languages
English (en)
Inventor
Chung-Li Lee
Original Assignee
Pulp Paper Res Inst
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 Pulp Paper Res Inst filed Critical Pulp Paper Res Inst
Publication of BR9007993A publication Critical patent/BR9007993A/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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • 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)
  • Compounds Of Unknown Constitution (AREA)
  • Detergent Compositions (AREA)
BR909007993A 1990-02-16 1990-02-16 Processo para alvejar polpa quimica BR9007993A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA1990/000052 WO1991012369A1 (en) 1990-02-16 1990-02-16 Bleaching of lignocellulosic material with dioxiranes

Publications (1)

Publication Number Publication Date
BR9007993A true BR9007993A (pt) 1992-10-13

Family

ID=4172838

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909007993A BR9007993A (pt) 1990-02-16 1990-02-16 Processo para alvejar polpa quimica

Country Status (8)

Country Link
EP (1) EP0515362B1 (pt)
JP (1) JPH0718113B2 (pt)
AU (1) AU641640B2 (pt)
BR (1) BR9007993A (pt)
DE (1) DE69008870T2 (pt)
FI (1) FI102195B1 (pt)
NO (1) NO923145L (pt)
WO (1) WO1991012369A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013993A1 (en) * 1991-02-12 1992-08-20 Pulp And Paper Research Institute Of Canada Bleaching of lignocellulosic material with activated oxygen
IT1251180B (it) * 1991-08-28 1995-05-04 Ausimont Spa Processo per la degradazione della lignina con diossirani
US6706143B1 (en) 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
JP2002302888A (ja) * 2001-04-05 2002-10-18 Oji Paper Co Ltd 漂白パルプの製造方法

Also Published As

Publication number Publication date
FI102195B (fi) 1998-10-30
WO1991012369A1 (en) 1991-08-22
DE69008870D1 (de) 1994-06-16
DE69008870T2 (de) 1994-08-18
FI923644A (fi) 1992-08-14
NO923145D0 (no) 1992-08-12
AU641640B2 (en) 1993-09-30
JPH05504173A (ja) 1993-07-01
AU5168690A (en) 1991-09-03
NO923145L (no) 1992-08-12
JPH0718113B2 (ja) 1995-03-01
FI923644A0 (fi) 1992-08-14
FI102195B1 (fi) 1998-10-30
EP0515362A1 (en) 1992-12-02
EP0515362B1 (en) 1994-05-11

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Legal Events

Date Code Title Description
KF Request for proof of payment of annual fee
FD5 Application fees: dismissal - article 86 of industrial property law