Simulation of a Fixed-Bed Reactor for Benzene Oxidation using a Two-Dimensional Heterogeneous Model

摘要

The fixed-bed catalytic reactor for benzene oxidation can be described by using the two-dimensional heterogeneous model. Based on the characteristics of the fixed-bed reactor and the kinetics of benzene oxidation, the yield of the maleic anhydride can be improved through lengthening the depth of catalytic bed, increasing the temperature of the inlet gas and adopting radial heat-conducting inserts. Moreover, the increase of both the superficial gas velocity of the bed and the fused salt temperature, and the adoption of high concentration of benzene together with partial reflux of tail gas are introduced to improve the output of the reactor.