FI45472C - Alkalisen massan valkaiseminen ja ligniinin poistaminen hapen avulla. - Google Patents

Alkalisen massan valkaiseminen ja ligniinin poistaminen hapen avulla.

Info

Publication number
FI45472C
FI45472C FI681734A FI173468A FI45472C FI 45472 C FI45472 C FI 45472C FI 681734 A FI681734 A FI 681734A FI 173468 A FI173468 A FI 173468A FI 45472 C FI45472 C FI 45472C
Authority
FI
Finland
Prior art keywords
lignin
bleaching
oxygen
removal
alkaline pulp
Prior art date
Application number
FI681734A
Other languages
English (en)
Swedish (sv)
Other versions
FI45472B (fi
Inventor
Smith Leon
Calvert David William
Pauw Daniel Rousseau
Robert Andre
Viallet Andre
Original Assignee
South African Pulp & Paper Ind
Air Liquide
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 South African Pulp & Paper Ind, Air Liquide filed Critical South African Pulp & Paper Ind
Application granted granted Critical
Publication of FI45472B publication Critical patent/FI45472B/fi
Publication of FI45472C publication Critical patent/FI45472C/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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
FI681734A 1967-06-20 1968-06-20 Alkalisen massan valkaiseminen ja ligniinin poistaminen hapen avulla. FI45472C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA673680 1967-06-20
ZA683772 1968-06-13

Publications (2)

Publication Number Publication Date
FI45472B FI45472B (fi) 1972-02-29
FI45472C true FI45472C (fi) 1972-06-12

Family

ID=27130958

Family Applications (1)

Application Number Title Priority Date Filing Date
FI681734A FI45472C (fi) 1967-06-20 1968-06-20 Alkalisen massan valkaiseminen ja ligniinin poistaminen hapen avulla.

Country Status (5)

Country Link
JP (1) JPS4810482B1 (fi)
ES (1) ES355194A1 (fi)
FI (1) FI45472C (fi)
NO (1) NO121431B (fi)
SE (1) SE341520B (fi)

Also Published As

Publication number Publication date
NO121431B (fi) 1971-02-22
SE341520B (fi) 1971-12-27
FI45472B (fi) 1972-02-29
ES355194A1 (es) 1969-11-16
JPS4810482B1 (fi) 1973-04-04

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