Patent ID: 7837861

Claim:
A process for the removal of sulfur compounds and benzene of a catalytically cracked petroleum naphtha comprising benzene, organic sulfur compounds and olefins, which comprises: Fractionating the cracked naphtha into a relatively low boiling range, olefinic, light catalytic naphtha (LCN) and an olefinic heavy catalytic naphtha (HCN) which boils above the range of the LCN the boiling ranges of the LCN and the HCN being defined by a cut point selected to maintain most of the benzene in the cracked naphtha in the LCN together with olefins in the boiling range of the LCN; Subjecting the LCN to a fixed bed alkylation step in which the benzene in the LCN is alkylated with the olefins contained in this fraction to produce an alkylated benzene LCN fraction; Subjecting the HCN to another fixed bed alkylation step using the olefins contained in this fraction to alkylate the sulfur compounds, forming alkylated sulfur products which boil above the gasoline boiling range in the alkylated sulfur HCN fraction.