Inventors:
Ronald L. Verson - Glenview IL
International Classification:
C07C 4106
C07C 258
Abstract:
A process for the production of propylene and high octane blending components from C. sub. 3 and C. sub. 4 hydrocarbons that provides the dual benefit of flexibility between alkylate and propylene products while allowing the processing of large amounts of normal butane. The process includes the steps of passing a combined feed of C. sub. 3 and C. sub. 4 hydrocarbons to a dehydrogenation zone, contacting the feed stream with a dehydrogenation catalyst, and recovering an effluent containing C. sub. 3 and C. sub. 4 olefins and admixing the effluent with another feed comprising paraffins and olefins having from 3-4 carbon atoms and recovering an intermediate stream. The intermediate stream enters a separation zone, which removes C. sub. 2 hydrocarbons and lower boiling materials from the process, recovers a first propylene product stream, produces an alkylation zone feed stream containing C. sub. 3 and C. sub. 4 hydrocarbons, and produces a recycle stream.