Butadiene production and purification

Details Butadiene production and purification Butadiene production and purification

1975-10-20

1977-10-18

Vertiz, O. R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260677A, 2606815R, 203 57, 203 58, 203 62, C07C 1112

Patent

active

040546136

ABSTRACT:
Butadiene is produced in relatively pure form by an oxidative dehydrogenation process in which a crude butadiene stream comprising butadiene, butylenes, vinyl acetylene and propylene is first extractively distilled with an extractant consisting of a sulfolane/acetone mixture. From a purified stream consisting essentially of butadiene and vinyl acetylene, the vinyl acetylene in a second extractive distillation step is removed using a sulfolane/acetone mixture as the extractant to produce a pure butadiene stream.

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