METHOD OF DECELERATED COKING OF OIL RESIDUES Russian patent published in 2015 - IPC C10B55/00 

FIELD: oil and gas industry.

SUBSTANCE: method includes the input feed stock heating, its supply to the bottom or top part of the evaporator (1). Heavy gasoil of coking from the accumulator (5) of the rectification column (4) is partially supplied for the quenching cooling, and balance is supplied to its bottom part and is mixed with bottom products. The mixture of the bottom products and heavy gasoil of coking from the bottom of the rectification column (4) is subjected to thermal cracking in the furnace (6) with the rectification chamber (7). After the quenching cooling of the thermal cracking products by the heavy gasoil of coking they are supplied to the evaporator (1) for mixing with the input coking feed stock. The obtained feed stock mixture is divided to light fractions and secondary coking feed stock, which through the coking furnace (2) is supplied to operating alternatively coking chambers (3). The produced vapour-liquid coking products are supplied to the rectification column (4) for rectification with production of gas, gasoline, light and heavy gasoils of coking and bottom products.

EFFECT: increased output of components of the engine fuels upon keeping the run between repairs of the unit.

4 cl, 1 dwg, 1 tbl