SE364323C - Sett att behandla cellulosamassa i alkalisk miljo - Google Patents

Sett att behandla cellulosamassa i alkalisk miljo

Info

Publication number
SE364323C
SE364323C SE7208288A SE828872A SE364323C SE 364323 C SE364323 C SE 364323C SE 7208288 A SE7208288 A SE 7208288A SE 828872 A SE828872 A SE 828872A SE 364323 C SE364323 C SE 364323C
Authority
SE
Sweden
Prior art keywords
cellulosa
treat
mass
way
alkaline environment
Prior art date
Application number
SE7208288A
Other languages
English (en)
Swedish (sv)
Other versions
SE364323B (Direct
Inventor
B Swan
R Gustavsson
Original Assignee
Billeruds Ab
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 Billeruds Ab filed Critical Billeruds Ab
Priority to SE7208288A priority Critical patent/SE364323C/xx
Priority to FI194173A priority patent/FI60734C/fi
Priority to CA174,459A priority patent/CA1001803A/en
Priority to JP7041873A priority patent/JPS5536753B2/ja
Priority to FR7322744A priority patent/FR2189572A1/fr
Priority to BR463773A priority patent/BR7304637D0/pt
Publication of SE364323B publication Critical patent/SE364323B/xx
Priority to US05/592,510 priority patent/US4004967A/en
Publication of SE364323C publication Critical patent/SE364323C/xx

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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE7208288A 1972-06-22 1972-06-22 Sett att behandla cellulosamassa i alkalisk miljo SE364323C (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE7208288A SE364323C (sv) 1972-06-22 1972-06-22 Sett att behandla cellulosamassa i alkalisk miljo
FI194173A FI60734C (fi) 1972-06-22 1973-06-15 Foerfarande foer behandling av cellulosamassa
CA174,459A CA1001803A (en) 1972-06-22 1973-06-19 Method of treating cellulose pulp
JP7041873A JPS5536753B2 (Direct) 1972-06-22 1973-06-21
FR7322744A FR2189572A1 (en) 1972-06-22 1973-06-21 Bleaching alkaline cellulosic pulp with oxygen - in presence of formaldehyde, (m)ethanol isopropanol, glycerol, sorbitol etc, to ensure slow disintegration of cellulose
BR463773A BR7304637D0 (pt) 1972-06-22 1973-06-22 Processo para alvejar polpa de celulose
US05/592,510 US4004967A (en) 1972-06-22 1975-07-02 Bleaching cellulose pulp with oxygen in the presence of formaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7208288A SE364323C (sv) 1972-06-22 1972-06-22 Sett att behandla cellulosamassa i alkalisk miljo

Publications (2)

Publication Number Publication Date
SE364323B SE364323B (Direct) 1974-02-18
SE364323C true SE364323C (sv) 1976-04-12

Family

ID=20273652

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7208288A SE364323C (sv) 1972-06-22 1972-06-22 Sett att behandla cellulosamassa i alkalisk miljo

Country Status (6)

Country Link
JP (1) JPS5536753B2 (Direct)
BR (1) BR7304637D0 (Direct)
CA (1) CA1001803A (Direct)
FI (1) FI60734C (Direct)
FR (1) FR2189572A1 (Direct)
SE (1) SE364323C (Direct)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229252A (en) * 1979-01-11 1980-10-21 Weyerhaeuser Company Additives for ozone bleaching
SE441192B (sv) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel
BR9102464A (pt) * 1991-06-14 1993-01-12 White Martins Sa Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica

Also Published As

Publication number Publication date
BR7304637D0 (pt) 1974-09-05
FI60734C (fi) 1982-03-10
CA1001803A (en) 1976-12-21
JPS4948903A (Direct) 1974-05-11
SE364323B (Direct) 1974-02-18
FR2189572B1 (Direct) 1977-05-13
FR2189572A1 (en) 1974-01-25
JPS5536753B2 (Direct) 1980-09-24
FI60734B (fi) 1981-11-30

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