PROCESS OF PRODUCTION OF MIDDLE DISTILLATES VIA TWO-STAGE HYDROISOMERIZATION AND HYDROCRACKING OF FEEDSTOCK OBTAINED BY FISCHER-TROPSCH SYNTHESIS AND INSTALLATION FOR IMPLEMENTATION OF THE PROCESS

摘要

FIELD: petrochemical processes. ^ SUBSTANCE: feedstock obtained on Fischer-Tropsch installation or the same subjected to fractionation to produce at least one heavy fraction with initial boiling point 120-200°C, said heavy fraction or said feedstock optionally being subjected to hydrofining, is brought into contact with first amorphous hydroisomerization/hydrocracking catalyst containing at least one precious group VIII metal. Resulting effluent is subjected to distillation to produce middle distillates and residual fraction. The latter and/or part of middle distillates is brought into contact with second amorphous hydroisomerization/hydrocracking catalyst containing at least one precious group VIII metal. Resulting effluent is subjected to distillation. Thus obtained distillates are recycled into zone containing second catalyst or into zone containing first catalyst. ^ EFFECT: simplified technology without loss in quality of target products. ^ 11 cl, 2 dwg