A Model of Catalytic Cracking: Catalyst Deactivation Induced by Feedstock and Process Variables

Changes in the quality of feedstocks generated by involving various petroleum fractions catalytic cracking significantly affect catalyst deactivation, which stems from coke formed on surface. By conducting experimental studies and catalysts, as well using industrial data, we studied how content saturates, aromatics resins (SAR) feedstock main process variables, including temperature, consumptions feedstock, slops, influence formation coke. We also determined deactivation patterns TG-DTA, N2 adsorption TPD, were further used a basis for kinetic model cracking. This helps predict changes reactions rates caused and, also, evaluates quantitatively group characteristics catalyst-to-oil ratio slop flow degree deactivation. defined that total loss acidity 8.6 to 30.4 wt% spent this depends SAR variables. The results show despite enriching highest yields (4.6–5.2 wt%) may be produced due high (2.1–3.5 wt%).