Abstract: A new high efficient heavy oil conversion catalyst B was developed and commercialized for a RFCC unit with a capacity of 2.8 Mt/a in Petrochina Hohhot Petrochemical Company. The commercial application results show that though the worse quality feed was used and the slurry was back recycled, the coke yield is 0.22% lower than the results of the original catalyst A, the light liquid yield increases by 0.41%, propylene yield increases by 0.49%, RON of FCC gasoline improves by 1.3, and the unit consumption of catalyst decreases by 0.26 kg/t.

Key words: fluid catalytic cracking, high efficient conversion, catalyst