Patent ID: 7186328

Claim:
A process for the cyclical regeneration of an adsorbent bed containing sulfur-oxidated compounds which process comprises: (a) contacting an adsorbent bed with a hydrocarbonaceous stream containing sulfur-oxidated compounds to produce a first hydrocarbonaceous stream containing a reduced concentration of sulfur-oxidated compounds and an adsorbent bed containing sulfur-oxidated compounds and having interstitial hydrocarbons; (b) passing a liquid purge stream boiling at a temperature less than the interstitial hydrocarbons to purge the interstitial hydrocarbons from the adsorbent bed; (c) introducing a resulting effluent from step (b) into a first lower end of a split shell fractionation zone; (d) passing a desorbent stream into the adsorbent bed containing purge liquid to desorb sulfur-oxidated compounds; (e) introducing a resulting effluent from step (d) into a second lower end of a split shell fractionation zone; (f) recovering a liquid purge stream and a desorbent stream from the fractionation zone; (g) recovering a second hydrocarbonaceous stream containing a reduced concentration of sulfur-oxidated compounds from the first lower end of the split shell fractionation zone; and (h) recovering sulfur-oxidated compounds from the second lower end of the split shell fractionation zone.