Combination dehydrocyclodimerization and dehydrogenation process for producing aromatic and olefin products

摘要

This invention deals with a process for converting aliphatic C2-C6 hydrocarbons into C6+ aromatics and C3=/C4= olefins. The process involves combining dehydrocyclodimerization (DHCD) with dehydrogenation. Thus, the feedstream is first sent to a DHCD zone which produces an effluent stream which contains C6+ aromatics along with C1-C5 hydrocarbons. This effluent stream is separated into a stream containing C1-C4 hydrocarbons and one containing C6+ aromatics. The C1-C4 containing stream is flowed to a dehydrogenation zone to produce C3=/C4= olefins.