Patent ID: 6482316
Filing Date: 2002-11-19
Classification: C10G

Abstract:
A method for reducing the amount of sulfur in refinery streams containing greater than 30 ppm sulfur, comprising the steps of:(a) contacting said refinery stream boiling in the range of about 50 to 300Â° F. comprising hydrocarbons and sulfur compounds with an adsorbent in an adsorbent bed selective for adsorption of said sulfur compounds, under adsorption conditions capable of retaining said sulfur compounds on said adsorbent and obtaining an adsorption effluent comprising a desulfurized refinery stream, (b) collecting said desulfurized refinery stream, (c) desorbing said sulfur compounds from said adsorbent by passing a desorbent through said adsorbent under desorption conditions to obtain a desorption effluent comprising sulfur compounds and said desorbent, wherein said desorbent is a refinery stream boiling in the range of about 50 to 300Â° F. and containing less than about 30 ppm sulfur; (d) treating said desorption effluent to remove said sulfur compounds from said desorption effluent and collecting a desulfurized desorbent effluent comprising desorbent, and (e) combining said desulfurized refinery stream of said step (a) and said desulfurized desorbent effluent of said step (d) to form a desulfurized refinery stream pool.