INTEGRATED PROCESS fluid catalytic cracking FOR OBTAINING HYDROCARBON BLENDS HAVING A HIGH QUALITY FUEL

摘要

FIELD: chemistry.SUBSTANCE: invention relates to a compound method of converting hydrocarbon fractions originating from oil into mixtures of hydrocarbons having high fuel quality, involving the following steps: 1) conducting fluid catalytic cracking (FCC) of the hydrocarbon fraction to obtain a mixture which contains light cycle gas oil (LCG); 2) separating the mixture obtained at the last FCC step in order to extract at least one LCG fraction and a heavy cycle gas oil (HCG) fraction; 3) re-feeding at least a portion of the HCG fraction to the FCC step; 4) conducting hydrifining of the LCG fraction; 5) reacting the product obtained at step (4) with hydrogen in the presence of a catalyst system comprising: a) one or more metals selected from Pt, Pd, Ir, Ru, Rh and Re; b) acidic aluminosilicate selected from a MTW zeolite, and completely amorphous micro-mesoporous aluminosilicate, having molar ratio SiO/AlOfrom 30 to 500, surface area greater than 500 m/g, pore volume from 0.3 to 1.3 ml/g, average pore diameter less than 40 E, wherein the FCC step is carried out at temperature ranging from 490 to 530°C; and at the FCC step preheating temperature of the feed stream ranges from 240 to 350°C. The invention also relates to a FCC method.EFFECT: obtaining mixtures of hydrocarbons having high fuel quality.22 cl, 3 tbl, 2 ex