Molecular-Level modeling for naphtha olefin reduction in FCC subsidiary Riser: From laboratory reactor to pilot plant

In this work, molecular-level kinetic modeling was developed for the fluid catalytic cracking (FCC) naphtha olefin reduction process in a subsidiary riser. A transfer strategy for model parameters between different scale reactors was proposed. A molecular-level kinetic model was developed for a laboratory-scale fixed fluidized bed (FFB). The kinetic parameters were tuned using systematic experimental data of FFB under different conditions. Then, a molecular-level process model was built for a pilot riser. The kinetic parameter of the pilot riser model was transferred from the FFB model using only one scale-up experimental data to tune the transferring factors. The obtained riser model can accurately predict the fraction yield, naphtha composition, and temperature profile while the feedstock and operating conditions were changed.

Automated summary

In this study, molecular-level kinetic modeling and model parameter transfer strategy were employed to develop a model for the fluid catalytic cracking (FCC) naphtha olefin reduction process. The developed model accurately predicts the product yield, composition, and temperature profile under different reactor scales and varying operating conditions.