Alkylation process for desulfurization of gasoline

Details Alkylation process for desulfurization of gasoline Alkylation process for desulfurization of gasoline

1995-05-31

1997-02-04

Myers, Helane

Mineral oils: processes and products

Refining

Sulfur removal

208134, 208211, C10G 3504

Patent

active

055994415

ABSTRACT:
Sulfur species present in cracked naphthas are converted and removed by first passing the naphtha over an acid catalyst to alkylate the thiophenic compounds in the naphtha using the olefins, i.e., monoolefins and diolefins, present in the naphtha as alkylating agent. Alkylated thiophenes are concentrated in the heavy portion of the naphtha by distillation, reducing the amount of naphtha that needs to be hydrodesulfurized. Olefins in cracked naphthas are concentrated in the light portion of the naphtha which is not subsequently hydrotreated. Thus, octane and hydrogen consumption penalties associated with hydrotreating are minimized.

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