Combination dehydrocyclodimerization and dehydrogenation process

Details Combination dehydrocyclodimerization and dehydrogenation process Combination dehydrocyclodimerization and dehydrogenation process

1993-12-16

1995-03-28

Sneed, Helen M. S.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

585314, 585316, 208 65, 208138, C07C 500, C07C 200, C07C 600, C10G 3506

Patent

active

054018935

ABSTRACT:
This invention deals with a process for converting aliphatic C.sub.2 -C.sub.6 hydrocarbons into C.sub.6.sup.+ aromatics and C.sub.3.sup.= /C.sub.4.sup.= 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 C.sub.6.sup.+ aromatics along with C.sub.1 -C.sub.5 hydrocarbons. This effluent stream is separated into a stream containing C.sub.1 -C.sub.4 hydrocarbons and one containing C.sub.6.sup.+ aromatics. The C.sub.1 -C.sub.4 containing stream is flowed to a dehydrogenation zone to produce C.sub.3.sup.= /C.sub.4.sup.= olefins.

REFERENCES:
patent: 4447653 (1984-05-01), Vora
patent: 4654455 (1987-03-01), Chao
patent: 4724271 (1988-02-01), Martindale et al.
patent: 4746763 (1988-05-01), Kocal
patent: 4868342 (1989-09-01), Verson

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