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NO923145L - Bleaching of LIGNOCELLULOS MATERIAL WITH DIOXYRANES - Google Patents

Bleaching of LIGNOCELLULOS MATERIAL WITH DIOXYRANES

Info

Publication number
NO923145L
NO923145L NO92923145A NO923145A NO923145L NO 923145 L NO923145 L NO 923145L NO 92923145 A NO92923145 A NO 92923145A NO 923145 A NO923145 A NO 923145A NO 923145 L NO923145 L NO 923145L
Authority
NO
Norway
Prior art keywords
bleaching
dioxyranes
lignocellulos
dloxiran
pulp
Prior art date
Application number
NO92923145A
Other languages
Norwegian (no)
Other versions
NO923145D0 (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 NO923145D0 publication Critical patent/NO923145D0/en
Publication of NO923145L publication Critical patent/NO923145L/en

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)

Abstract

En fremgangsmåte for bleking av en kjemiek masse med et dloksiran fremstiller en masse med god kvalitet} og miljøproblemene reduseres ved å gjøre det på denne måten. En kjemisk masse bringes l kontakt med et dloksiran, og enten med eller uten kjente blekemldler, i kombinasjon eller l sekvens.A process for bleaching a chemical pulp with a dloxiran produces a good quality pulp} and the environmental problems are reduced by doing so. A chemical mass is brought into contact with a dloxiran, either with or without known bleaching agents, in combination or in sequence.

NO92923145A 1990-02-16 1992-08-12 Bleaching of LIGNOCELLULOS MATERIAL WITH DIOXYRANES NO923145L (en)

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 (2)

Publication Number Publication Date
NO923145D0 NO923145D0 (en) 1992-08-12
NO923145L true NO923145L (en) 1992-08-12

Family

ID=4172838

Family Applications (1)

Application Number Title Priority Date Filing Date
NO92923145A NO923145L (en) 1990-02-16 1992-08-12 Bleaching of LIGNOCELLULOS MATERIAL WITH DIOXYRANES

Country Status (8)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69202149T2 (en) * 1991-02-12 1995-11-09 Pulp Paper Res Inst Bleaching lignocellulosic materials with activated oxygen.
IT1251180B (en) * 1991-08-28 1995-05-04 Ausimont Spa PROCESS FOR LIGNIN DEGRADATION WITH DIOSSIRANS
US6706143B1 (en) 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
JP2002302888A (en) * 2001-04-05 2002-10-18 Oji Paper Co Ltd Manufacturing method of bleached pulp

Also Published As

Publication number Publication date
FI102195B (en) 1998-10-30
AU5168690A (en) 1991-09-03
AU641640B2 (en) 1993-09-30
FI923644A0 (en) 1992-08-14
EP0515362B1 (en) 1994-05-11
FI102195B1 (en) 1998-10-30
WO1991012369A1 (en) 1991-08-22
BR9007993A (en) 1992-10-13
JPH05504173A (en) 1993-07-01
DE69008870T2 (en) 1994-08-18
EP0515362A1 (en) 1992-12-02
NO923145D0 (en) 1992-08-12
JPH0718113B2 (en) 1995-03-01
DE69008870D1 (en) 1994-06-16
FI923644L (en) 1992-08-14

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