FIELD: chemistry.
SUBSTANCE: invention relates to a hydrofining catalyst for processing heavy raw hydrocarbons having significant vanadium concentrations, wherein the mentioned hydrofining catalyst comprises: a calcined particle comprising a co-mixed mixture prepared by co-stirring an inorganic oxide powder, molybdenum trioxide powder and group VIII metal particles, and then forming the mentioned co-mixed mixture into a particle which is calcined to thereby obtain the mentioned calcined particle, wherein the mentioned calcined particle has such pore structure that at least 23% of the total pore volume of the mentioned calcined particle is in the form of pores of the mentioned calcined particle having pore diameters greater than 5000 angstroms, and less than 70% of the total pore volume of the mentioned calcined particle is in the form of pores of the mentioned calcined particle having pore diameters in the range from 70 to 250 E as it is measured by method of mercury porosimetry. The mentioned molybdenum trioxide powder used to prepare the mentioned co-mixed mixture is in the finely grained state of molybdenum trioxide in the form of particles, or in the form of a finely grained powdered solid or in the form of a suspension, wherein the mentioned molybdenum trioxide in the form of particles has such particle size, the maximum measurement of which is in the range from 0.2 to 150 mcm. The mentioned stage of co-stirring is carried out in such a way that the mentioned co-mixed mixture has a pH value which is maintained in the range from 6 to 9. The calcination of the mentioend particle is carried out under controlled temperature conditions, at a calcination temperature in the range from 482°C (900°F) to 787.7°C (1450°F) for a calcination period so as to obtain the mentioned calcined particle having the mentioned pore structure. The mentioend calcined particle has a molybdenum content in the range from 2 wt % to 12 wt %. The mass percentage is based on molybdenum in the form of MoO3 and the total weight of the mentioned calcined particle. The invention also relates to a method of producing the claimed catalyst, as well as to a method for processing heavy raw hydrocarbons.
EFFECT: high catalytic activity and stability of the catalyst.
15 cl, 4 dwg, 3 tbl, 2 ex
