Experimental Study of Dielectric Breakdown of Refractory Board Materials for Application in High-temperature Sieving Electrostatic Precipitator

摘要

This paper presents the results of experiments conducted on the dielectric breakdown of selected number of refractory board materials exposed to high voltage ionizing environment in a hot gas stream. The study looks at the critical parameters such as the gas temperature, physical and composition of refractory materials under study, electric field strength, and identifies breakdown limits of the refractory materials within the given operational range of these parameters. This experimental study provide an insight into the high-temperature characteristics of these electric insulating materials and the necessary experimental data used to select the proper refractory materials for applications that involve high-temperature flue gas particulate clean-up using the Sieving Electrostatic Precipitator (S-ESP) technology.