Patent ID: 7638041

Claim:
A process for the treatment of fluid catalytic cracked naphtha containing dienes, mercaptans and other organic sulfur compounds, comprising the steps of: (a) splitting the fluid catalytic cracked naphtha into at least three fractions comprising a light cracked naphtha, a medium cracked and a heavy cracked naphtha; (b) treating the light cracked naphtha to react a portion of the mercaptans contained therein with a portion of the dienes contained therein in the presence of a thioetherification catalyst to form sulfides; and (c) treating the medium cracked naphtha to hydrogenate a portion of the dienes contained therein in the presence of a hydrogenation catalyst, wherein the medium cracked naphtha is not subjected to the thioetherification catalyst; wherein steps (a) and (b) are carried out concurrently in a distillation column reactor having a thioetherification catalyst within the upper portion of the distillation column reactor, and the sulfides are removed with the medium and heavy cracked naphtha.