THE EFFECT OF COR ON THE RISER REACTOR PERFORMANCE OF THE

FCCU

Yousuo Digieneni

Department of Chemical Engineering,

Niger Delta University, Yenagoa, Bayelsa State of Nigeria

E-mail: digieneniyousuo@yahoo.com;

ABSTRACT: A review on the Fluid catalytic cracking unit (FCCU) catalyst system was carried out. The riser reactor was stimulated using COMSOL Multiphysics computational fluid dynamics (CFD) software. The extra fine mesh generator of the COMSOL Multiphysics software was used to produce grid refinement in the riser reactor. The effect of catalyst oil ratio (COR) on riser reactor yields were studied. The results showed that the gasoline yield increases with the increasing COR, hold up of catalyst (1-ε) increased with increase of COR and so for all investigated input catalyst temperature the increase of hold up can lead to higher conversion and pressure drop. A maximum on gasoline yield appears when COR is 7 making gasoline yield going up to almost 52%. A minimum on coke yield appears when COR is 5 making coke yield up to 2%.