Effects of the FCC catalyst binder type on propylene production during catalytic cracking of VGO

Abstract

Effects of the fluid catalytic cracking (FCC) catalyst binder type on catalytic properties were studied. SiO2 and Al2O3 were used for the FCC catalysts as a binder. Although the yield of olefins in gasoline, which is easily cracked to light olefins such as a propylene over the ZSM-5 additive, over the SiO2 binder catalyst was lower than that over the Al2O3 binder catalyst during vacuum gas oil (VGO) cracking, however, when the ZSM-5 additive was blended, the SiO2 binder catalyst showed higher propylene yield as compared with the Al2O3 binder catalyst. In terms of the difference in the properties of catalyst, the SiO2 binder catalyst indicated higher SAmicro than the Al2O3 binder catalyst after steaming. Moreover, the acid properties of the FCC catalysts after steaming also were affected by the binder type. In results, the SiO2 binder catalyst indicated higher propylene yield as compared with the Al2O3 binder catalyst.