PROCESS FOR CONVERTING HEAVY FEED USING CATALYTIC CRACKING UNIT AND STEP FOR SELECTIVE HYDROGENATION OF GASOLINE OBTAINED FROM CATALYTIC CRACKING

摘要

PROBLEM TO BE SOLVED: To provide a process for converting a heavy feed which is flexible for production of propylene, gasoline and a middle cut.SOLUTION: A process uses a catalytic cracking unit and a unit for oligomerization of 4-9C olefins. The process includes selective hydrogenation of an unrefined gasoline cut obtained from the catalytic cracking unit and separation between a light gasoline cut and a heavy gasoline cut, the light gasoline being directed to the oligomerization unit.