Abstract: The great demand of chemical raw material such as ethylene and propylene and moderating of oil consumption increase drive the petrochemical industry to a new direction of integration of refinery and petrochemical where the technology of producing light olefins from heavy oil deep catalytic cracking deserves a place. From the perspective of reaction mechanism, the effect of feedstock property, catalyst, reactor type, and operating conditions on the product distribution is summarized, and the challenges on the progress of deep catalytic cracking are prospected.

Key words: deep catalytic cracking, light olefin, integration of refinery and petrochemical, process condition