Effect of the particle diameter and corona electrode geometry on the particle migration velocity in electrostatic precipitators

The paper presents the results of research on the movement of fly ash particles in the model of an electrostatic precipitator (ESP) with different corona electrodes: barbed plate, barbed tube, wire, and spiked band. The experimental set-up and the photographic method for measuring the particle velocity using laser light are described. The photographs showed the trajectory of particle movement in the inter-electrode space and enabled the determination of the migration velocity of particles. The experiments were performed with the use of one type of fly ash with different diameters, and for given supply voltages and a constant inlet gas velocity. The results obtained enabled one to determine the effect of particle diameter and supply voltage on the migration velocity of particles in four corona electrode geometries in the ESP model.