FIELD: chemistry.
SUBSTANCE: method involves (a) extraction from a Fischer-Tropsch synthesis product of a first gasoline fraction which boils out at 25-215°C, a first gas oil fraction which boils out at 215-325°C and a fraction which boils in a temperature interval higher than that of the gas oil fraction. The method also involves (b) brining the heavier fraction into contact with a catalyst system. The system contains a catalyst which contains an acid matrix and a coarse-pored molecular sieve in a vertical reactor at temperature 450-650°C, contact time 1-10 seconds and ratio between amount of catalyst to amount of oil equal to 2-20 kg/kg, (c) extraction from the product from step (b) of a second gasoline fraction and a second gas oil fraction, (d) combining the first and second gas oil fractions.
EFFECT: obtaining gas oil through catalytic cracking of a Fischer-Tropsch synthesis product.
11 cl, 7 tbl, 14 ex
