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
