Chevron Research & Technology Company

Chevron Chemical Company LLC

Scott Gordon Morrison

Gerald J Nacamuli

Eric P Weber

Paul M Spindler

Warren E Brown

Bruce J Thom

Arnold J Gloyn

Paul I Hodgen

N J Haritatos

Nhu Q Dao

Gary A Ash

Richard Wolpert

Stuart R MacPherson

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

Provided is a reforming process for producing a high purity benzene product using a non-acidic zeolitic catalyst. The high purity benzene is extracted from a light fraction of reformate that has less than 500 ppm by weight toluene. Generally, a hydrocarbon feed is reformed in a reformer under reforming conditions in the presence of a non-acidic catalyst to produce a reformate. That reformate is separated into a light fraction and a heavy fraction. The extraction unit, preferably an extractive distillation unit, is then used to separate the light fraction into an aromatic extract stream and a nonaromatic raffinate stream.

Reforming process for producing high-purity benzene

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Petaluma, CA, United States of America

Scott Gordon Morrison