Abstract：Considering the fact that MTP reaction possesses the fast reaction rate and significant intraparticle limitation, a coupled model in multi-scale incorporating a single particle model and a fixed-bed model was applied to investigate the effect of catalyst particle size on the reaction rate. The hydrodynamics, mass and heat transfer, chemical reaction, were taken into consideration in the model involving single particle and fixed-bed multi-scale behaviors. This model shows better performance in predicting the impact of catalyst particle size at different locations of reactor. Simulation results indicate that at the feed end, owing to the high concentration of methanol, the reaction rate is fast and small particle size is preferred to reduce the intraparticle diffusion limitation, while at the middle or back end, big particle size is suggested to increase propylene selectivity. Finally, a portfolio method of loading catalyst particle in fixed-bed was recommended.
Xiao Yao,Tian Zhen,Wang Lijun et al. Multi-Scale Coupling Model Involving Bed and Catalyst Particle for MTP Reactor Simulation[J]. 化学反应工程与工艺, 2015, 31(1): 40-48.
