A method for the hydrogenation treatment of a heavy hydrocarbon oil.

摘要

The invention provides an improved method for the two-step catalytic hydrogenation of a heavy hydrocarbon oil such as a residual oil in the distillation of crude oils. The improvement comprises the use of a solid catalyst, in the first step of the two-step treatment, supporting a metal component having an activity for the hydrogenation reaction on an inorganic oxide carrier having an activity for the cracking of a hydrocarbon, of which the volume of the pores having a diameter of 100 nm or larger is at least 0.05 ml/g. By virtue of the use of a catalyst having a specific morphological characterisic of the carrier in the pore size distribution, the process of the two-step hydrogenation can be performed with a very high efficiency and stability over a long period of time for the continuous running.