Numerical simulation on mixing performance of Vertical Circulative Impinging Stream Reactor with different blade inclinations

To further discuss the influence in mixing performance of Vertical Circulative Impinging Stream Reactor (referred to VCISR), numerical simulation was carried out by using CFD software about the structure of VCISR with different blade inclinations under different stirring rates. The results of numerical simulation showed that: average velocity on longitudinal profile with the structure that blade inclination was 15° had maximum, it meant the circulative ability was the best in this structure. The shear rate on characteristic impingement surface with structure that blade inclination was 60° had the highest magnitude, which indicated that the shearing motion among different flow micelles was more vigorous in this structure than others. The results also showed that intensity of shearing motion was inverse proportional to the efficiency of energy consumption, and accelerating the stirring rate was benefit to improve the mixing performance of VCISR, but the effect would be weakened as the increasing of stirring rate.