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FI822193A0 - FOERFARANDE VID DELIGNIFIERING AV CELLULOSAMASSA - Google Patents

FOERFARANDE VID DELIGNIFIERING AV CELLULOSAMASSA

Info

Publication number
FI822193A0
FI822193A0 FI822193A FI822193A FI822193A0 FI 822193 A0 FI822193 A0 FI 822193A0 FI 822193 A FI822193 A FI 822193A FI 822193 A FI822193 A FI 822193A FI 822193 A0 FI822193 A0 FI 822193A0
Authority
FI
Finland
Prior art keywords
delignifiering
cellulosamassa
foerfarande vid
foerfarande
vid
Prior art date
Application number
FI822193A
Other languages
Finnish (fi)
Other versions
FI822193L (en
FI66032C (en
FI66032B (en
Inventor
Erkki Wathen
Lassi Luotonen
Esa Forsten
Original Assignee
Rauma Repola Oy
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 Rauma Repola Oy filed Critical Rauma Repola Oy
Priority to FI822193A priority Critical patent/FI66032C/en
Publication of FI822193A0 publication Critical patent/FI822193A0/en
Priority to SE8303428A priority patent/SE8303428L/en
Publication of FI822193L publication Critical patent/FI822193L/en
Application granted granted Critical
Publication of FI66032B publication Critical patent/FI66032B/en
Publication of FI66032C publication Critical patent/FI66032C/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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI822193A 1982-06-18 1982-06-18 FOERFARANDE VID DELIGNIFIERING AV CELLULOSAMASSA FI66032C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI822193A FI66032C (en) 1982-06-18 1982-06-18 FOERFARANDE VID DELIGNIFIERING AV CELLULOSAMASSA
SE8303428A SE8303428L (en) 1982-06-18 1983-06-15 PROCEDURE OF DELIGNIFICATION OF CELLULOSAMASSA

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI822193A FI66032C (en) 1982-06-18 1982-06-18 FOERFARANDE VID DELIGNIFIERING AV CELLULOSAMASSA
FI822193 1982-06-18

Publications (4)

Publication Number Publication Date
FI822193A0 true FI822193A0 (en) 1982-06-18
FI822193L FI822193L (en) 1983-12-19
FI66032B FI66032B (en) 1984-04-30
FI66032C FI66032C (en) 1984-08-10

Family

ID=8515719

Family Applications (1)

Application Number Title Priority Date Filing Date
FI822193A FI66032C (en) 1982-06-18 1982-06-18 FOERFARANDE VID DELIGNIFIERING AV CELLULOSAMASSA

Country Status (2)

Country Link
FI (1) FI66032C (en)
SE (1) SE8303428L (en)

Also Published As

Publication number Publication date
FI822193L (en) 1983-12-19
FI66032C (en) 1984-08-10
FI66032B (en) 1984-04-30
SE8303428L (en) 1983-12-19
SE8303428D0 (en) 1983-06-15

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: RAUMA-REPOLA OY