Characterization of brush type discharge electrodes and impact of enhanced corona discharge on operation of electrostatic precipitators

This project presents the results of investigation of current/voltage characteristics of brush type discharge electrodes (BTDE) in tube type electrostatic precipitators and the effect on operation. Experimental investigations were conducted with discharge electrodes of different wire diameter and different brush diameter. The effect of electrode geometry on current/voltage behavior was recorded. Corona current with brush type discharge electrodes was modeled and compared with experimental data. Brush type discharge electrodes produce an enhanced corona current compared with wire type discharge electrodes. Limited enhanced corona has improving effect on collection efficiency. An adjusted correlation was therefore deduced from experimentally obtained current/voltage data with BTDE.

► Investigations of the current/voltage (I/V) behavior of different geometry of discharge electrodes and experimentally obtained I/V data was modeled with state of the art empirical correlations.
► Enhanced and uniform corona current with brush type discharge electrodes was recorded.
► Deduced equation best explain the characteristics of brush type discharge electrodes.