PROCESS OF PRODUCING MIDDLE DISTILLATES VIA HYDROISOMERIZATION AND HYDROCRACKING OF HEAVY FRACTION FORM PRODUCTS OBTAINED IN FISCHER-TROPSCH PROCESS AND APPARATUS FOR IMPLEMENTATION OF THE PROCESS

摘要

FIELD: petroleum processing and petrochemical industry.;SUBSTANCE: heavy fraction with boiling point from 120 to 200^°C is isolated and a part of it is passed through amorphous halogen-free hydroisomerization/hydrocracking catalyst, on which conversion of hydrocarbons with starting boiling points higher than or equal to 370^°C into products having boiling points below 370^°C exceeds 80 wt %. Thereafter, fraction undergone hydrocracking and hydroisomerization is distilled to produce middle distillates and residual fraction boiling higher than said middle distillates, which is recycled to contact zone with aforesaid amorphous hydroisomerization/hydrocracking catalyst.;EFFECT: improved quality and yield of desired products.;11 cl, 1 dwg, 7 tbl