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US 4,543,438 AGranted
Tertiary-butylstyrene recovery
AssigneeEl Paso Products Company
InventorsJames D. Henery, Charles L. Edwards, Stephen C. McHaney
Life of this patent
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Abstract
The reaction effluent from an oxydehydrogenation reactor, used in the preparation of t-butylstyrene from t-butylethylbenzene, is subjected to liquid-liquid extraction with a sulfolane-water mixture to separate unreacted t-butylethylbenzene from t-butylstyrene.
Claims3
A process for the separation of t-butylstyrene from an oxidative dehydrogenation zone effluent containing t-butylethylbenzene and t-butylstyrene comprising:
- introducing said effluent as feed to a liquid/liquid extraction zone;
- intimately contacting said feed in said zone with aqueous sulfolane solvent containing from about 2 to about 10 wt. % water;
- recovering t-butylethylbenzene as raffinate, and recovering an extract containing t-butylstyrene.
Dependencies are inferred from the claim text.