Patent ID: 6736963
Filing Date: 2004-05-18
Classification: C10G

Abstract:
A process for the production of products which are liquid at ambient conditions and contain organic sulfur compounds of higher molecular weight than corresponding sulfur-containing compounds in the feedstock, which process comprises:providing a feedstock comprising a mixture of hydrocarbons which includes olefins and sulfur-containing organic compounds, the feedstock consisting essentially of material boiling between about 60Â° C. and about 345Â° C. and having a sulfur content up to about 5,000 parts per million; in an initial contacting stage at elevated temperatures, contacting the feedstock with an acidic catalyst under conditions which are effective to convert a portion of the sulfur-containing organic compounds to a sulfur-containing material of higher molecular weight through alkylation by the olefins, thereby forming an initial product stream; and in a subsequent contacting stage and at temperatures at least 10 C. lower than the average of the elevated temperatures in the first contacting stage, contacting at least a portion of the initial product stream with an acidic catalyst under conditions which are effective to convert a portion of the sulfur-containing organic compounds to a sulfur-containing material of higher molecular weight through alkylation by the olefins, thereby forming a subsequent product stream.