SE389135B - PROCEDURE FOR PRE-TREATMENT OF LIGNOCELLULOSA MATERIAL WITH H? 712S IN ALKALIC MASS PRODUCTION - Google Patents

PROCEDURE FOR PRE-TREATMENT OF LIGNOCELLULOSA MATERIAL WITH H? 712S IN ALKALIC MASS PRODUCTION

Info

Publication number
SE389135B
SE389135B SE7310326A SE7310326A SE389135B SE 389135 B SE389135 B SE 389135B SE 7310326 A SE7310326 A SE 7310326A SE 7310326 A SE7310326 A SE 7310326A SE 389135 B SE389135 B SE 389135B
Authority
SE
Sweden
Prior art keywords
lignocellulosa
alkalic
procedure
treatment
mass production
Prior art date
Application number
SE7310326A
Other languages
Swedish (sv)
Inventor
A R Procter
G E Styan
M G Vinje
Original Assignee
Mac Millan Bloedel 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
Priority claimed from US00362009A external-priority patent/US3841962A/en
Application filed by Mac Millan Bloedel Ltd filed Critical Mac Millan Bloedel Ltd
Publication of SE389135B publication Critical patent/SE389135B/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
SE7310326A 1972-07-31 1973-07-25 PROCEDURE FOR PRE-TREATMENT OF LIGNOCELLULOSA MATERIAL WITH H? 712S IN ALKALIC MASS PRODUCTION SE389135B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27685372A 1972-07-31 1972-07-31
US00362009A US3841962A (en) 1972-07-31 1973-05-21 Hydrogen sulfide pretreatment of lignocellulosic materials in alkaline pulping processes

Publications (1)

Publication Number Publication Date
SE389135B true SE389135B (en) 1976-10-25

Family

ID=26958163

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7310326A SE389135B (en) 1972-07-31 1973-07-25 PROCEDURE FOR PRE-TREATMENT OF LIGNOCELLULOSA MATERIAL WITH H? 712S IN ALKALIC MASS PRODUCTION

Country Status (5)

Country Link
JP (1) JPS5217121B2 (en)
FI (1) FI55693C (en)
FR (1) FR2194840A1 (en)
NO (1) NO137099C (en)
SE (1) SE389135B (en)

Also Published As

Publication number Publication date
JPS5217121B2 (en) 1977-05-13
NO137099C (en) 1977-12-28
FR2194840A1 (en) 1974-03-01
JPS4992302A (en) 1974-09-03
FI55693B (en) 1979-05-31
FR2194840B1 (en) 1976-04-30
FI55693C (en) 1979-09-10
NO137099B (en) 1977-09-19

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