You are here:
ELECTROSTATIC EFFECTS IN FABRIC FILTRATION: VOLUME II. TRIBOELECTRIC MEASUREMENTS AND BAG PERFORMANCE (ANNOTATED DATA)
Citation:
Frederick, E. ELECTROSTATIC EFFECTS IN FABRIC FILTRATION: VOLUME II. TRIBOELECTRIC MEASUREMENTS AND BAG PERFORMANCE (ANNOTATED DATA). U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-78/142B.
Description:
The report describes the construction and application of a bench-scale, single-bag, experimental filter. It also describes several complementary evaluation procedures and their data. Especially significant are the methods for, and results of, electrical determinations that are not normally applied to filter media and particulates. The effect of these electrical parameters on the collection process is used to explain performance variations. Results of several filtration studies on several industrial particulates (e.g., from a power plant, and from metallurgical and chemical processes) are reviewed in detail and explained on the basis of electrostatic properties. Flyash collection, for example, was favored by the use of mid-triboelectric position media and not by the highly electropositive or electronegative fabrics that are used for their high temperature properties. Three different electric furnace dusts tended to respond best (filtrationwise) with mid-triboelectric position fabrics, modified for different cleaning practices. Steel grinding and burning dusts offered very critical filtration characteristics that demanded control of aerosol flow and particulate loading, as well as special care in filter media selection. A ferromolybdenum by-product dust was collected best by very electropositive fabrics.