NUMERICAL INVESTIGATION OF HIGH EFFICIENT PRODUCTION OF PROPYLENE IN A MULTI-REGIME FCC RISER ID# 240391

摘要

Fluid catalytic cracking (FCC) is among the most important refinery processes that convert high boiling point petroleum fractions into fuel and light olefins. With the increased demand for high quality products, traditional FCC units have been confronted with multiple economic challenges that limit their role in the transformation of heavier and inferior feedstock to the more valuable light olefins such as ethylene and propylene. In this work, a novel FCC process has been developed and tested on an industrial scale dual-riser FCC unit. This process was based on the TMP process (Two-stage-riser catalytic cracking for Maximizing Propylene yield) (Li at al., 2007). Effectiveness of the new developed multi-regime reactor has been experimentally and numerically proved. Numerical results show clearly the differences in flow field and phase distributions in favor of the novel reactor compared to the traditional ones.