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ELECTROSTATIC AUGMENTATION OF FABRIC FILTRATION: PULSE-JET PILOT UNIT EXPERIENCE
Citation:
VanOsdell, D., M. Ranade, G. Greiner, AND D. Furlong. ELECTROSTATIC AUGMENTATION OF FABRIC FILTRATION: PULSE-JET PILOT UNIT EXPERIENCE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-82/062 (NTIS PB83168625), 1982.
Description:
The report describes the development of the parallel-field electrostatically augmented fabric filter (ESFF) on a pilot-scale pulse-cleaned baghouse. The pilot unit consisted of parallel conventional and ESFF baghouses installed on a slipstream from a pulverized-coal boiler. Teflon and fiberglass fabrics were investigated under a wide variety of operating conditions. Major parameters studied were particulate collection (total mass and size dependent), baghouse pressure drop, and electrical characteristics. Research results show that the ESFF baghouse has significant advantages over conventional ones. The flow resistance of the collected dust is substantially reduced. Under the same operating conditions, an ESFF baghouse has about half the pressure drop of a conventional one. Alternatively, the flow through a given area of fabric (face velocity) can be increased at constant pressure drop in the ESFF baghouse. Experience at the ESFF pilot unit suggests that face velocity can be doubled. An economic projection based on these results indicates that the ESFF would reduce the annualized cost of the filter by 30 percent. Particulate control capabilities of the ESFF baghouse were about the same as for the conventional one, with outlet loadings averaging less than 0.017 g/std cu m.