Simulation of irradiation intensity distribution of electrodeless ultraviolet lamp in cylindrical resonator by CFD

Abstract

To improve the catalytic efficiency of the microwave single-mode sintering furnace to heat the catalyst and the carrier to catalyse the oxidation of toluene, the SJ-1 microwave single-mode sintering furnace was modified to place a microwave electrodeless ultraviolet lamp in the resonant cavity. The distribution of pollutants in the reactor and the intensity of UV light were calculated by CFD and visualized. The distribution of UV field can be seen from the results of light field, which provides a scientific basis for the placement of catalyst and a reference for the simulation of UV field. Under the conditions of relative humidity of 50%, space velocity of 6336.93 h−1, input power of 392.8 W, bed height of manganese oxide catalyst is 30 mm, initial toluene concentration of 235.23 mg/m3, input power of 595.3 W, toluene conversion efficiency of 94%. It has certain guiding significance.