OIL RESIDUES PROCESSING METHOD Russian patent published in 2021 - IPC C10G45/08 C10G7/06 C10G67/02 C10G69/02 

FIELD: oil industry.

SUBSTANCE: method for processing heavy oil residues is proposed, including deep vacuum distillation of fuel oil with the release of straight-run vacuum distillate and tar, coking of tar with subsequent separation of liquid coking products into gasoline, diesel fractions and heavy gas oil fractions, mixing of gasoline and heavy gas oil fractions by coking with vacuum distillate and vacuum distillate the subsequent direction of the resulting mixture to the stage of hydrotreating, where a straight-run vacuum distillate with the end point of boiling up to 590°С is isolated, the stage of hydrotreating is carried out sequentially in the zones: feed of 0.5-1.5 h^-1 and a hydrogen-containing gas / feed ratio of 500-2000 nm³ / m³ in the presence of a nickel-molybdenum sulfide catalyst with a bimodal mesomacroporous structure of an alumina carrier; - hydrodesulfurization, which is carried out at a pressure of 4-10 MPa, a temperature of 340-410°С, a space velocity of the feedstock of 0.3-1.5 h^-1 and a hydrogen-containing gas / feedstock ratio of 400-1500 nm³ / m³ in the presence of a sulfide nickel-cobalt-molybdenum catalyst with a bimodal mesomacroporous structure of an alumina carrier; - light hydrocracking, which is carried out at a pressure of 4-10 MPa, a temperature of 360-420°С, a volumetric feed rate of 0.3-1.0 h^-1 and a hydrogen-containing gas / raw material ratio of 500-2000 nm³ / m³ in the presence of a nickel-molybdenum catalyst based on an aluminosilicate carrier; hydrocarbon gas, gasoline and diesel fractions, as well as residual low-sulfur marine fuel, with a sulfur content of not more than 0.1% by weight, are isolated from the products of hydrotreating.

EFFECT: development of a method for processing oil residues boiling up to 590°C, which provides a high yield of residual marine fuel, with a sulfur content of no more than 0.1% by weight, which meets the requirements of GOST 32510-2013.

3 cl, 3 ex