Simulation of Process and Reactor Structure Optimization for CeO2 Preparation from Jet-Flow Pyrolysis

The pyrolysis reactions within a self-made jet pyrolysis reactor were simulated using FLUENT software. The effects of process parameters and reactor structural parameters on the pyrolysis reaction efficiency were studied. Within certain ranges, the CeO2 yield can be improved by reducing the inlet fuel flow rate or by increasing the CeCl3 concentration. To ensure two-phase mixing homogeneity and reaction efficiency inside the reactor, the optimized value of the diameter ratio of the drainage pipe to the throat mouth is 10/5, the angle between the drainage pipe and the throat mouth is 90°, and the drainage pipe diameter is 10 mm.