PROCESS FOR THE CONVERSION OF HYDROCARBONS

摘要

In a process for the catalytic hydrodesulphurization without catalyst replenishment of a vanadium- and nickel-containing residual oil, in which process a specified relation exists between the particle size and porosity of the catalyst and the applied hydrogen partial pressure, the lifetime of the catalyst is increased by partly demetallizing the oil prior to hydrodesulphurization in accordance with a specific equation which relates the extent of demetallization and the lifetime of the catalyst.