System and method for selective component cracking to maximize production of light olefins

Abstract From the Canadian patent

A process for the fluid catalytic cracking of hydrocarbons includes contacting relatively heavy hydrocarbons with a fluidized particulate catalyst in a reaction zone under catalytic cracking conditions to convert at least some of the heavy hydrocarbons to light olefins having from 3 to 4 carbon atoms conveying a reaction mixture containing spent catalyst particles and a gaseous stream containing the light olefins and other reaction products to a cyclone separation system directly connected to the reaction zone at least part of , the cyclone separation system being positioned within an interior space enclosed by a vessel, the interior space including a stripping region and an upper …