Dehydrogenation of alkanes, e.g. propane to propene, comprises dehydrogenation of ethylbenzene to styrene to form hydrogen containing waste gas stream and heterogeneous catalyzed dehydrogenation of the alkane mixed with the hydrogen

摘要

Dehydrogenation of 2-30C alkanes comprises dehydrogenation of ethylbenzene to styrene to form a hydrogen containing waste gas stream, and heterogeneous catalyzed dehydrogenation of a 2-30C alkane in at least one reaction zone mixed with at least a portion of the hydrogen containing waste stream to form the corresponding olefin. A process for the dehydrogenation of 2-30C alkanes comprises: (1) dehydrogenation of ethylbenzene to styrene to form a hydrogen containing waste gas stream; and (2) heterogeneous catalyzed dehydrogenation of a 2-30C alkane in at least one reaction zone to form the corresponding olefin whereby a hydrogen containing gas stream is mixed with the dehydrogenation reaction mixture in at least one reaction zone such that at least a portion of the hydrogen containing waste stream from step (1) is mixed with the alkane reaction mixture.