Exxon Research and Engineering Company

Edward Niessen

Bal K Kaul

Craig Y Sabottke

Rocco A Fiato

Robert J Fiocco

Joseph T O'Bara

Donald C Runaldue

The daylight stability, foaming characteristics, color, engine performance test behavior, oxygenates content, and thermal stability of wax isomerate oils and/or hydrocarbon synthesis liquid products are improved by the process of contacting the aforesaid wax isomerate oil and/or hydrocarbon synthesis liquid products with a silica adsorbent, said silica adsorbent being characterized by possessing a pore size of at least about 100 .ANG., preferably at least about 125 .ANG., most preferably at least about 150 .ANG., an alkali/alkaline earth ion concentration, excluding sodium, of greater than about 125 ppm, an iron content of less than about 40 ppm and a zirconium content of less than about 130 ppm.

Performance of contaminated wax isomerate oil and hydrocarbon synthesis

A totally contained adsorption process for the substantial total removal and conversion of benzene to cyclohexane in gasoline boiling range streams. At least a portion of the gasoline boiling range stream is passed through an adsorption zone containing an adsorbent which will selectively adsorb benzene from the stream. The process is totally contained in the sense that substantially total conversion of benzene to cyclohexane is achieved without the need for added desorbent. The desorbent is cyclohexane which is generated in the process.

Benzene removal and conversion from gasoline boiling range streams

An improved sealed-sieve tray extraction tower has pipe means located in at least a portion of the downcomer or upcomer zones, as the case may be, for delivering at least a portion of a first continuous phase through the downcomer or upcomer zone such that it is not broken into fine droplets thereby minimizing the potential for dispersion of the continuous phase.

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Passaic, NJ, United States of America

Edward Niessen