FI102195B - Lignoselluloosamateriaalin valkaiseminen dioksiraaneilla - Google Patents

Lignoselluloosamateriaalin valkaiseminen dioksiraaneilla Download PDF

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Publication number
FI102195B
FI102195B FI923644A FI923644A FI102195B FI 102195 B FI102195 B FI 102195B FI 923644 A FI923644 A FI 923644A FI 923644 A FI923644 A FI 923644A FI 102195 B FI102195 B FI 102195B
Authority
FI
Finland
Prior art keywords
pulp
chlorine dioxide
chlorine
bleaching
process according
Prior art date
Application number
FI923644A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI102195B1 (fi
FI923644A (fi
FI923644A0 (fi
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 FI923644A publication Critical patent/FI923644A/fi
Publication of FI923644A0 publication Critical patent/FI923644A0/fi
Application granted granted Critical
Publication of FI102195B1 publication Critical patent/FI102195B1/fi
Publication of FI102195B publication Critical patent/FI102195B/fi

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)
  • Detergent Compositions (AREA)
  • Compounds Of Unknown Constitution (AREA)
FI923644A 1990-02-16 1992-08-14 Lignoselluloosamateriaalin valkaiseminen dioksiraaneilla FI102195B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA9000052 1990-02-16
PCT/CA1990/000052 WO1991012369A1 (en) 1990-02-16 1990-02-16 Bleaching of lignocellulosic material with dioxiranes

Publications (4)

Publication Number Publication Date
FI923644A FI923644A (fi) 1992-08-14
FI923644A0 FI923644A0 (fi) 1992-08-14
FI102195B1 FI102195B1 (fi) 1998-10-30
FI102195B true FI102195B (fi) 1998-10-30

Family

ID=4172838

Family Applications (1)

Application Number Title Priority Date Filing Date
FI923644A FI102195B (fi) 1990-02-16 1992-08-14 Lignoselluloosamateriaalin valkaiseminen dioksiraaneilla

Country Status (8)

Country Link
EP (1) EP0515362B1 (de)
JP (1) JPH0718113B2 (de)
AU (1) AU641640B2 (de)
BR (1) BR9007993A (de)
DE (1) DE69008870T2 (de)
FI (1) FI102195B (de)
NO (1) NO923145L (de)
WO (1) WO1991012369A1 (de)

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
FI102195B1 (fi) 1998-10-30
DE69008870D1 (de) 1994-06-16
JPH05504173A (ja) 1993-07-01
FI923644A (fi) 1992-08-14
NO923145D0 (no) 1992-08-12
NO923145L (no) 1992-08-12
AU5168690A (en) 1991-09-03
JPH0718113B2 (ja) 1995-03-01
BR9007993A (pt) 1992-10-13
AU641640B2 (en) 1993-09-30
WO1991012369A1 (en) 1991-08-22
DE69008870T2 (de) 1994-08-18
FI923644A0 (fi) 1992-08-14
EP0515362B1 (de) 1994-05-11
EP0515362A1 (de) 1992-12-02

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