TWO-STEP HYDROCRACKING PROCESS COMPRISING A HYDROGENATION STAGE UPSTREAM OF THE SECOND HYDROCRACKING STAGE FOR THE PRODUCTION OF MEDIUM DISTILLATES

摘要

The present invention resides in the implementation of a hydrocracking process in 2 stages comprising a hydrogenation stage placed upstream of the second hydrocracking stage, the hydrogenation stage treating the unconverted liquid fraction separated in the distillation step in the presence of a specific hydrogenation catalyst. In addition, the hydrogenation steps and the second hydrocracking step are carried out under specific operating conditions and in particular under very specific temperature conditions. Figure 1 to publish.