Movement of Dust Between Electrodes in an Electrostatically Augmented Fabric Filter

• Published in: IEEE transactions on industry applications Vol. IA-21; no. 2; pp. 523 - 526
• Main Authors: Penney, Gaylord W., Uber, James G.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-03-1985; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Conductivity; Corona; Current measurement; Electrodes; Electrostatic measurements; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fabrics; Filters; Fluid dynamics; Fundamental areas of phenomenology (including applications); Industry Applications Society; Instrumentation for fluid dynamics; Metering, regulation, automation in energy; Motion pictures; Physics; Surface discharges; Theoretical studies. Data and constants. Metering; Porous filter; Improvement; Yield; Electric field; Flue gas dust removal; Filtering cloth
• ISSN: 0093-9994; 1939-9367
• DOI: 10.1109/TIA.1985.349698

An electric field normal to a fabric filter is used to improve the performance of the filter, but unfortunately, this field provides a force tending to pull previously deposited dust off from the filter. This electrostatic force is very small compared to the pressure drop through the filter, and so it had been assumed that the pressure drop through the filter would hold dust on the fabric. Evidence is given that, under some conditions, agglomerations of dust may be pulled off and moved to the opposite electrode. Currents due to this motion are measured, and motion pictures show large agglomerations of dust moving between electrodes.