PROCESS FOR BENZENE REDUCTION AND SULFUR REMOVAL FROM FCC NAPHTHAS

A process for the removal of sulfur compounds and benzene of a catalytica lly cracked petroleum naphtha comprising benzene, organic sulfur compounds a nd olefins, by fractionating the cracked naphtha into a relatively low boili ng range, olefinic, light catalytic naphtha (LCN) and an olefinic heavy cata lytic naphtha (HCN) which boils above the range of the LCN the boiling range s of the LCN and the HCN being defined by a cut point selected to maintain m ost of the benzene in the cracked naphtha in the LCN together with olefins i n the boiling range of the LCN. The LCN is subjected to an optional non-hydr ogenative desulfurization step followed by a fixed bed alkylation step in wh ich the benzene in the LCN is alkylated with the olefins contained in this f raction. The HCN is treated by a similar an alkylation step using the olefin s contained in this fraction to alkylate the sulfur compounds, forming alkyl ated products which boil above the gasoline boiling range. The LCN and HCN a re then fractionated to remove light ends and higher boiling sulfur reaction products (disulfides, alkylated thiophenes) boiling above the gasoline boil ing range.