Patent ID: 9399741
Filing Date: 2016-07-26
CPC Classification: C10G

Claim Text:
1. A method for desulfurizing a hydrocarbon stream, the method comprising the steps of: separating the hydrocarbon stream into a heavier fraction and a lighter fraction, wherein the heavier fraction includes a relatively higher amount of lower octane mono-unsaturates and the lighter fraction includes a relatively higher amount of higher octane mono-unsaturates; hydrodesulfurizing the heavier fraction in a first hydrodesulfurization zone; hydrodesulfurizing the lighter fraction in a second hydrodesulfurization zone; forming a hydrodesulfurized stream from the heavier fraction and the lighter fraction; de-gassing the hydrodesulfurized stream; stripping hydrogen sulfide from the hydrodesulfurized stream; providing a naphtha stream; and catalytically sweetening the naphtha stream and saturating diolefins in the naphtha stream to form the hydrocarbon stream.