METHOD OF OBTAINING THE SUSPENSION OF THE HEAVY OIL RAW MATERIAL HYDROCONVERSION CATALYST Russian patent published in 2018 - IPC B01J37/20 B82Y40/00 B01J27/51 B01J27/49 C10G47/06 C10G47/26 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the field of oil refining and, more particularly, to the methods for preparation of the nanosized and ultradisperse catalysts without the carrier for hydrogenation processing of high molecular hydrocarbon raw materials, in particular, high-boiling residues of oil refining, natural bitumen, bituminous oils, carbonaceous wastes, etc., and can be used in the oil refining industry accompanied by the production of hydrocarbon gas, gasoline and diesel fractions, vacuum gas oil. Method for producing the suspension of the hydroconversion catalyst of the heavy petroleum feedstock comprises the steps of obtaining the homogeneous mixture of the aqueous solution of the water-soluble catalyst precursor and of the sulphiding agent in the hydrocarbon medium, dispersing the mixture in order to obtain the inverted emulsion and heat treatment of the inverted emulsion for 2–8 hours at the temperature of 280–370 °C with obtainment of the suspension, which contains the catalyst particles stabilized in the hydrocarbon medium and these particles are not larger than 350 nm. Hydrocarbon medium contains asphaltenes at the ratio of their content to paraffinonaphthenic hydrocarbons, which is greater than 0.16 and to aromatic hydrocarbons, which is more than 0.08. Elemental sulfur is used as a sulphiding agent at the atomic ratio of S/Me=1.5–2. Preparation of the mentioned homogeneous mixture is carried out by means of preliminary dissolving of sulfur in the hydrocarbon medium at the temperature of 130 °C, the subsequent addition into this medium of the aqueous solution of the catalyst precursor and homogenization at the temperature of 60–90 °C. Water soluble salts of nickel, molybdenum or cobalt, including ammonium paramolybdate, are used as the water-soluble catalyst precursor.

EFFECT: reduced size of the catalyst particles in the suspension from micro-sized up to ultrafine, increased stability of the suspension, increased degree of catalyst sulfidation, cheapening due to the lack of expensive surfactants, increased activity during the process of hydroconversion, namely increased degree of conversion of the fraction for the value more than 520 °C and reduced coke formation.

1 cl, 1 dwg, 1 tbl, 14 ex