Experimental study on the optimization of electrostatic precipitator performance of crenelated dust collection plate

Abstract

To investigate the influence of dust-collecting plate structures on electrostatic precipitators (ESPs), an experimental approach was employed to compare the dust removal performance of four plate types—flat plate, triangular plate, corrugated plate, and crenelated plates (CrPs)—under varying wind speeds and voltages for optimal selection. The wavelength(λ) and amplitude(A) parameters of the optimal crenelated plate were further optimized, and its dust removal efficiency for different particle sizes was explored. Results show that the crenelated plate effectively improves electric field distribution and enhances corona discharge, demonstrating the best dust removal performance. Compared with flat plates, crenelated plates with different wavelengths and amplitudes significantly improve efficiency under various voltage and wind speed conditions, with amplitude exerting a more pronounced effect than wavelength. The optimal performance is achieved by a crenelated plate with 150 mm wavelength and 60 mm amplitude. Dust removal efficiency increases with particle size, reaching 82.49 % for 3 μm and 99.34 % for 20 μm particles at 50 kV and 0.5 m/s. The findings provide a reference for the design of electrode plate structures in practical applications.