Chevron Phillips Chemical Company LP

Chevron Chemical Company LLC

Paul M Spindler

John V Heyse

Daniel P Hagewiesche

Gerald J Nacamuli

Eric P Weber

Arnold J Gloyn

Scott Gordon Morrison

Bruce J Thom

Paul I Hodgen

N J Haritatos

Nhu Q Dao

Gary A Ash

Richard Wolpert

Stuart R MacPherson

A improved hydrocarbon conversion process, comprising applying a plating, cladding, paint or other coating to at least a portion of a hydrocarbon conversion reactor system which is used to convert hydrocarbons to products in the presence of steam, said coating being effective to reduce the amount of undesirable by-products in said process; and operating the hydrocarbon conversion process at a steam to hydrocarbon ratio that is lower than the steam to hydrocarbon ratio at which said process was operated prior to applying said coating. Preferred hydrocarbon conversion process includes steam cracking of hydrocarbons to produce ethylene and dehydrogenation of ethylbenzene to styrene.

Increasing production in hydrocarbon conversion processes

A process is provided for producing high purity benzene and high purity paraxylene from a hydrocarbon feed. In one aspect, the process comprises: (a) reforming a hydrocarbon feed using either a monofunctional catalyst or a bifunctional catalyst to provide one or more reformate streams; (b) fractionating the reformate stream to provide a toluene stream, a benzene stream, and a xylene stream; (c) subjecting the toluene stream to disproportionation; (d) purifying the benzene stream by extraction followed by distillation to provide a high purity benzene product; and (e) purifying the xylene stream by simulated moving bed countercurrent adsorption followed by crystallization to provide a high purity paraxylene product.

Process for converting hydrocarbon feed to high purity benzene and high

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Kingwood, TX, United States of America

Paul M Spindler