蜂窝型光催化反应器载体表面光强分布建模与分析

Modeling and Analysis of UV Light Intensity Distribution on the Carrier Surface of the Honeycomb Photocatalytic Reactor

为了提高蜂窝型纳米二氧化钛(TiO2)光催化反应器紫外线光子的利用率,建立了平行式光催化反应器载体表面光强分布数学模型,并进行了仿真分析,结果表明:在紫外灯管功率不变的情况下,紫外光子强度总体与紫外灯管排布面到光催化剂载体平面垂直距离、紫外灯管间距呈现正向关系,但两参数的比例对辐射光强的x方向分布的均匀性影响较大,比例越小,x方向光强分布越不均匀。y方向的光强分布较为均匀,与两参数关系较小。仿真结果为蜂窝状光催化反应器载体表面紫外灯管的布局和功率选择提供了指导。

To improve the utilization of ultraviolet photons in the cellular-type nano TiO2 photocatalytic reactor,a mathematical model of UV-light intensity distribution of parallel photocatalytic reactor carrier surface has been established,and a simulation analysis has been carried out.The results show that,while the power of the UV lamp remains constant,the overall UV photon intensity shows a positive relationship with the vertical distance from the UV lamp layout surface to the photocatalyst carrier plane and the distance between the UV lamps.However,the proportion of the two parameters has a greater impact on the uniformity of the distribution of radiation intensity in the x-direction.The smaller the proportion is,the more uneven the distribution of light intensity in the x-direction will be.The light intensity distribution in the y-direction is relatively uniform and has a small relationship with the two parameters.The simulation results have provided guidance for the layout and power selection of UV tubes on the carrier surface of the honeycomb photocatalytic reactor.