Patent ID: 8920635

Claim:
A method of processing a hydrocarbon feed to remove undesired organosulfur compounds comprising: a. flashing the hydrocarbon feedstock to provide a low boiling temperature fraction that contains a reduced level of organosulfur compounds and a high boiling temperature fraction having refractory organosulfur compounds; b. subjecting the low boiling temperature fraction to a hydrodesulfurizing process to produce a hydrotreated effluent; c. contacting the high boiling temperature fraction with a gaseous oxidizing agent and an oxidizing catalyst having a formula Cu x Zn 1-x Al 2 O 4 wherein x ranges from 0 to 1 to convert refractory organosulfur compounds into sulfur-free hydrocarbons and SO x by breaking the C—S bonds; d. removing the by-product SO x in a separation zone from the sulfur-free hydrocarbons; and e. recovering an ultra-low sulfur level hydrocarbon product.