The two-stage-riser catalytic pyrolysis technology of heavy oil for maximizing propylene

features the possibility of feedstock diversification

high-yield of propylene and high-value gasoline

which enables a bright future for the related industrial applications. Modeling

nonlinear analysis

and control are important aspects for achieving high mass/energy conversion and therefore improving the competitiveness of the TMP technology. This work concentrates on the dynamic modeling for process control purpose. First

mass and energy balance models for the first riser

the second riser

the stripper

the combustor

and the dense region of the regenerator are established and connected by the spent and regenerated catalyst flow among them

forming an integrated dynamic model of the TMP process. It showed that numerical simulation of the main process variables to perturbations in potential manipulated variables not only validates the effectiveness of the set model but also presents strong interactions among two risers and the regenerator system. In total

the built model is well-suited to be adopted as a reference model for subsequent nonlinear analysis and model-based advanced control investigation.