Numerical Investigation on Wet Removal Properties of Superfine Aerosol Particles

Abstract

Wet removal efficiency of aerosol particles (AP) are investigated in this paper, three main theory models of AP coalescence, water droplets (WD) capture, and supersaturated vapor phase are introduced. Grade removal efficiency (GRE) versus AP diameter is numerical obtained and compared with experimental data only under the WD capture. Then, the influence of WD diameter on GRE is examined. Simulation results show that GRE can be effectively improved with decreasing WD diameter especially for AP in the 0.1-2.5um diameter range. Furthermore, the removal rate under three mechanisms is increased greatly. Therefore, taking advantage of multiple mechanisms and exploring the proper wet removal technical will provide the guide for the future application.