Patent ID: 6676830
Filing Date: 2004-01-13
Classification: C10G

Abstract:
A process comprising:a. feeding a naphtha stream containing diolefins and organic sulfur compounds comprising mercaptans to a reaction distillation zone; b. concurrently in said reaction distillation zone: i. contacting said naphtha feed with hydrogen in the presence of a hydrodesulfurization catalyst to produce a reaction mixture containing H2S and ii. fractionating said reaction mixture into a first overheads containing H2S and a naphtha fraction of less than C8 and a first bottoms of a C6+ naphtha fraction and organic sulfur compounds boiling in the range of the C6+ naphtha fraction; c. fractionating the first bottoms into a second overheads containing a C6-C7 naphtha fraction and a second bottoms containing a C7+ naphtha fraction and sulfur compounds boiling in the range of the C7+ naphtha fraction; and d. contacting the second bottoms with hydrogen in the presence of a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone to further reduce the sulfur content.