Recovery of 1,3-butadiene from a C.sub.4 -hydrocarbon mixture

Details Recovery of 1,3-butadiene from a C.sub.4 -hydrocarbon mixture Recovery of 1,3-butadiene from a C.sub.4 -hydrocarbon mixture

1976-03-23

1977-09-20

O'Keefe, Veronica

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260680R, C07C 708

Patent

active

040497429

ABSTRACT:
1,3-Butadiene is recovered with the aid of a selective solvent from a C.sub.4 -hydocarbon mixture containing 1,3-butadiene, hydrocarbons which are more soluble in said selective solvent than 1,3-butadiene, including acetylenes and possibly 1,2-butadiene and C.sub.5 -hydrocarbons, and hydrocarbons which are less soluble in said selective solvent than 1,3-butadiene. The C.sub.4 -hydrocarbon mixture is separated by the use of one or more extractive distilling zones into a distillate containing the less soluble hydrocarbons, a stream consisting of 1,3-butadiene and a stream containing the more soluble hydrocarbons including the higher acetylenes and 1,3-butadiene, the latter stream being subjected to catalytic hydrogenation.

REFERENCES:
patent: 3705204 (1972-12-01), Horie et al.
patent: 3803258 (1974-04-01), Weitz et al.

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