| 摘要 |
A process for desulfurizing olefinic gasoline, comprising more than at least two individual hydro-desulfurization steps is provided to reduce the sulfur content in a fuel, to limit the mercaptan content in a low-sulfur gasoline, and to allow a user to determine whether the fuel is produced by using a gasoline fraction or an intermediate distillate. A process for desulfurizing olefinic gasoline relates to a method for producing a gasoline with a low content of sulfur and mercaptan, and includes more than two individual hydro-desulfurization steps, that is, HDS1 and HDS2, both of which are carried out in parallel for two individual gasoline fractions configured as a supply source respectively. The supply source is distilled into three graduations, that is, a hard one with a boiling point less than 100 deg.C, a medium one with a boiling point more than 180 deg.C, and a core one corresponding to a middle between the hard and the medium graduations, and corresponds to a gasoline discharged from a catalytic cracking unit. Additionally a hydrogen flux of the HDS2 amounts to less than 80% of that of the HDS1.
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