Uop Lcc

Gail L Gray

Stanley Joseph Frey

Gregory J Gajda

James A Johnson

Dean E Rende

Sanjay B Sharma

Lawrence D Vail

Patrick J Silady

Patrick Jerome Bullen

Benjamin C Spehlmann

Benjamin D Riley

Steven B Philoon

A naphtha hydrotreating process involves the use of a sulfur guard bed (SGB) with a controlled bypass which allows for control of the sulfur in the feed to a downstream processing unit. The SGB is installed on the light ends stripper bottoms stream in a naphtha hydrotreating unit.

Naphtha hydrotreating process with sulfur guard bed having controlled bypass flow

An improved process is disclosed for ethylbenzene and xylene isomerization in a non-equilibrium mixture of xylenes and ethylbenzene. By addition of trace quantities of water to the reaction zone, equivalent isomerization is effected at lower temperatures wherein benefits could be realized in reduced losses and improved catalyst life.

Process for the activation of an alkylaromatic isomerization catalyst by water

An improved process is disclosed for the isomerization of butenes, using a catalyst comprising a non-zeolitic molecular sieve to increase the proportion of isobutene or of 1-butene in the product with low formation of undesirable by-products.

Butene isomerization process

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Lisle, IL, United States of America

Gail L Gray