ABSTRACT
This study explored the flexibility of FCC unit of a typical Refinery, in Optimizing Propylene, a feedstock for the petrochemical industry. This was achieved using Aspen Hysys (version 7.1), a chemical process software to systematically manipulate the reactor’s temperature, pressure and catalyst activity variables in the FCCU. Result from the simulation showed that increase in temperature, pressure and ZSM-5 additive increases the propylene product yield and also enhances the MON and RON of gasoline. It is observed also that, there is a drastic rise in olefin product yield as the temperature rises and an increase in ZSM-5 catalyst additive. The product yield variation at a catalyst additive of 0.196 of a gradual increase in the temperature, it is seen that the reactor would only operate at an optimum temperature range of 520 – 540oC
