HYDROREFINING OF HEAVY CRUDE-OIL ON CATALYSTS WITH VARIOUS PORE STRUCTURES

Processes were studied for the hydrodesulfurization and demetallization of heavy crude oil of secondary origin on Al-Ni-Mo catalysts with various pore structures. At a temperature of 400-degrees-C for 200 h, catalysts with a high concentration of pores with a radius >10 nm were characterized by higher stability in the hydrodesulfurization process. The maximum intensity of the demetallization process was observed for samples with a high concentration (approximately 0.3 cm3/g) of pores with radius >100 nm. The relationship between the level of desulfurization and demetallization is presented.