| 摘要 |
The invention concerns a process for reducing the quantity of sulphur present in a hydrocarbon feed such as a gasoline or a gas oil, comprising the following steps: <SL> <LI>a) bringing said feed containing sulphur-containing compounds into contact with an adsorbant C1, C2 having a selectivity for sulphur-containing compounds under conditions for producing, at the outlet from the contact zone, a desulphurized effluent 4 which is collected, said adsorption being carried out in the liquid phase or in the gas phase; <LI>b) gas phase desorption of the sulphur-containing compounds present on said adsorbant C1, C2 using a gaseous fluid comprising hydrogen and deriving from a hydrodesulphurisation zone B to obtain a gaseous effluent 7 comprising desorbed sulphur-containing compounds and the gaseous fluid comprising hydrogen; <LI>c) sending the effluent from step b) to said hydrodesulphurization zone B and desulphurizing it therein. </SL> In a further embodiment, the initial gasoline is distilled A into two fractions, a light fraction 3 and heavy fraction 5. Light fraction is treated in adsorbant/desorb zones C1, C2 and the heavy fraction undergoes hydrodesulphurisation B Hydrogen is recycled 9. |
