Process for production of styrene

摘要

A process for the production of styrene is disclosed, comprising the steps of: a) feeding to an alkylation unit a stream of benzene and a stream of ethylene; b) mixing the outlet stream from the alkylation unit with a stream of ethane and a stream of oxygen; c) feeding the mixture obtained in b) to an oxodehydrogenation unit containing a catalyst capable of contemporaneously oxidatively dehydrogenating ethane and ethylbenzene to give ethylene and styrene respectively; d) feeding the product leaving the oxodehydrogenation unit to a separation unit to produce a stream containing styrene and a stream containing ethylene; e) recycling the stream containing ethylene to the alkylation unit.