FI43808C - Menetelmä selluloosamateriaalin valkaisemiseksi veteen lietettynä - Google Patents

Menetelmä selluloosamateriaalin valkaisemiseksi veteen lietettynä

Info

Publication number
FI43808C
FI43808C FI641492A FI149264A FI43808C FI 43808 C FI43808 C FI 43808C FI 641492 A FI641492 A FI 641492A FI 149264 A FI149264 A FI 149264A FI 43808 C FI43808 C FI 43808C
Authority
FI
Finland
Prior art keywords
water
cellulosic material
bleaching cellulosic
material slurried
slurried
Prior art date
Application number
FI641492A
Other languages
English (en)
Other versions
FI43808B (fi
Inventor
William Howard Rapson
Original Assignee
A & W Overseas Dev Ltd
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 A & W Overseas Dev Ltd filed Critical A & W Overseas Dev Ltd
Publication of FI43808B publication Critical patent/FI43808B/fi
Application granted granted Critical
Publication of FI43808C publication Critical patent/FI43808C/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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI641492A 1963-07-12 1964-07-11 Menetelmä selluloosamateriaalin valkaisemiseksi veteen lietettynä FI43808C (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA879968 1963-07-12

Publications (2)

Publication Number Publication Date
FI43808B FI43808B (fi) 1971-03-01
FI43808C true FI43808C (fi) 1977-09-27

Family

ID=4141767

Family Applications (1)

Application Number Title Priority Date Filing Date
FI641492A FI43808C (fi) 1963-07-12 1964-07-11 Menetelmä selluloosamateriaalin valkaisemiseksi veteen lietettynä

Country Status (12)

Country Link
US (1) US3536577A (fi)
JP (1) JPS5235761B1 (fi)
AT (1) AT265008B (fi)
CH (1) CH486596A (fi)
DE (1) DE1546226B1 (fi)
ES (1) ES301960A1 (fi)
FI (1) FI43808C (fi)
FR (1) FR1407286A (fi)
GB (1) GB1007697A (fi)
NL (2) NL6407863A (fi)
OA (1) OA00199A (fi)
SE (1) SE301583B (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE334286B (fi) * 1968-12-05 1971-04-19 Mo Och Domsjoe Ab
SE391750B (sv) * 1974-03-21 1977-02-28 Kamyr Ab Sett att i ett kerl kontinuerligt behandla cellulosamassa med klor
JPS5422857U (fi) * 1977-07-14 1979-02-15
US4325783A (en) * 1978-03-30 1982-04-20 Erco Industries Limited Bleaching procedure using chlorine dioxide and chlorine solutions
JPS5542838U (fi) * 1978-09-13 1980-03-19
US4299653A (en) * 1979-04-16 1981-11-10 Erco Industries Limited Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solution
WO2000075420A1 (en) * 1999-06-08 2000-12-14 Eastern Pulp And Paper Corporation Bleaching pulp with high-pressure o¿2?

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494542A (en) * 1946-05-02 1950-01-17 Niagara Alkali Company Method of bleaching pulp
CH315608A (fr) * 1952-03-26 1956-08-31 Electro Chimie Metal Procédé de blanchiment de pâtes de cellulose au sulfite ou au sulfate
BE518419A (fi) * 1952-03-26
US3020196A (en) * 1960-08-05 1962-02-06 Allied Chem Production of high brightness high strength wood pulps

Also Published As

Publication number Publication date
FR1407286A (fr) 1965-07-30
FI43808B (fi) 1971-03-01
ES301960A1 (es) 1965-01-16
NL6407863A (fi) 1965-01-13
GB1007697A (en) 1965-10-22
OA00199A (fr) 1966-03-15
AT265008B (de) 1968-09-25
SE301583B (fi) 1968-06-10
CH486596A (de) 1970-02-28
NL134770C (fi)
US3536577A (en) 1970-10-27
DE1546226B1 (de) 1970-11-26
JPS5235761B1 (fi) 1977-09-10

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