METHOD FOR PRODUCTION OF MEDIUM DISTILLATES BY HYDROISOMERISATION AND HYDROCRACKING OF A HEAVY FRACTION FROM THE RESIDUE OBTAINED BY THE FISCHER-TROPSCH PROCESS

摘要

The invention relates to a method in which a heavy fraction is separated from the paraffinic residue from a Fischer-Tropsch synthesis, with an initial boiling point of 120-200 DEG C, said heavy fraction then being optionally hydrotreated, then brought into contact with an amorphous hydroisomerisation/hydrocracking catalyst which converts at least 80 % by weight of products boiling at 370 DEG C+ into products boiling at less than 370 DEG C. After distillation of the fraction subjected to hydrocracking, obtained on separating the medium distillates, the residual heavy fraction is recycled. The invention further relates to an installation for carrying out said method.