Patent ID: 7090766

Claim:
A process for the production of low sulfur naphtha comprising the steps of: (a) feeding hydrogen and a C 5 and heavier naphtha stream containing organic sulfur compound, olefins, diolefins and acetylenes to a first distillation column reactor containing a bed of hydrogenation catalyst; (b) concurrently in said distillation column reactor (i) reacting the olefins, diolefins and acetylenes with hydrogen under conditions of temperature and pressure to produce saturated compounds and (ii) separating a C 5 and lighter stream and unreacted hydrogen from the C 6 and heavier material by fractional distillation; (c) withdrawing the C 5 and lighter stream from the first distillation column reactor as a first overheads (d) condensing the C 5 material in said overheads; (e) withdrawing a C 6 and heavier material from the first distillation column reactor as a first bottoms; (f) feeding said first bottoms and said condensed C 5 material along with hydrogen to a second distillation column reactor above a bed of hydrodesulfurization catalyst; (g) concurrently in said second distillation column reactor (i) reacting a portion of the organic sulfur compounds contained within said first bottoms and said condensed C 5 material with hydrogen under conditions of temperature and pressure to produce H 2 S; and (ii) separating a C 5 and lighter stream, H 2 S and unreacted hydrogen from the C 6 and heavier material by fractional distillation; (h) removing said C 5 and lighter stream, H 2 S and unreacted hydrogen from said second distillation column reactor as a second overheads; (i) removing a C 6 and heavier material from said second distillation column reactor as a second bottoms, said second bottoms containing less organic sulfur compounds than said naphtha feed.