Influence of Pyrrole Concentration on Cracking Activity of n-hexane in a Performance FCC Catalyst and Additives

摘要

To enhance the refinery margins there is always pressure to process different types of crude containing nitrogen and sulfur. Nitrogenous and sulfur compounds have adverse effects on the performance of catalytic processes. Studies on the effect of sulfur on catalyst and their removal through catalytic treatment have been reported. Whereas systematic study on the performance of FCC catalysts and additives in presence of nitrogenous compounds is not well understood. This topic deals with studies on effect of model nitrogen compounds like pyrrole (non-basic) on the performance of fluid catalytic cracking catalyst and additives. And we have also study the effect of concentration of nitrogen compounds on cracking activity of n-hexane and VGO, the reasons for the deactivation of the catalysts seems to be due to deactivation of active sites by the strong adsorption of nitrogen compounds Alkali-treated ZSM-5 zeolites produce higher yields of light olefins compared to either untreated zeolites or alkali-treatment introduces mesopores to the zeolites and improves their catalytic cracking ability.