| Abstract: | Fabric filtration systems have been employed in industry for over a century with relatively few technological modifications. However, with the recent substantial increase in energy costs, conservation in energy consumption has become vitally important. As a result, the filtration systems of yesteryear may not be the best approach for future applications. Recently, an external electrical field was considered in fabric filtration of industrial dust with very promising initial results. An increase in the collection efficiency, particularly for fine particulates, and a decrease in the pressure drop was observed. In this paper the further results of an experimental program in the investigation of pressure drop in the electrostatic fabric filtration in industrial dust control are presented. The basic apparatus, a bench-scale electrostatic fabric filtration system, creates a representative dust cake under specific conditions of operating parameters and charge levels. The results clearly indicate that filter and dust cake resistance, or pressure drop, decreases substantially with the increased electrostatic field strength for all industrial dust samples tested, regardless of fabric type and other relevant parameters. |
