Effect of Microwave Heating on the Mixing Effect of Chlorinated Cerium Solution and the Preparation of Cerium Oxide

Microwave heating has the characteristics of simple control and high efficiency, in which electromagnetic force plays an important role. The electromagnetic force model in the tube was established by using the UDF function and energy equation of FLUENT software. The mixing process of cerium chloride solution and the mixing effect of Lorentz force under different heating methods, as well as the microwave heating mixing and cerium oxide preparation process under different power, were numerically simulated. CFD-Post and MATLAB software were used to post-process the data of the whole fluid region. Through the above analysis, the optimal process conditions of numerical simulation and experiment were finally determined. The results show that, compared with conventional heating, microwave heating has a better effect on the uniform mixing of cerium chloride solution, in which Lorentz force promotes the mixing; under microwave heating conditions, the conversion rate is higher, the cerium oxide concentration distribution is more uniform, and the product morphology is better. The best cerium chloride mixing method and cerium oxide preparation method are microwave heating, and the best microwave power is 5 kW.