improved process of converting a heavy load to medium distillate, calling for upstream pretreatment of the catalytic cracking unit

摘要

Patent summary: "Improved process of converting a heavy load to medium distillate, calling for an upstream pretreatment of the catalytic cracking unit". The present invention relates to an improved process of converting a heavy load, allowing to improve selectivity in medium distillates. The invention consists in the application of a hydrotreating or hydroconversion process of pre-treatment of the heavy load upstream of the catalytic cracking unit assembly followed by an oligomerization unit which allows to increase the clear production of the c3, c4 and light gasoline cuts. from the catalytic cracking unit and therefore significantly increase the average distillate production after the oligomerization step as well as the medium distillate selectivity over gasoline.