||Electrostatic Augmentation of Fabric Filtration: Pulse-Jet Pilot Unit Experience.
VanOsdell, D. W. ;
Ranade, M. B. ;
Greiner, G. P. ;
Furlong, D. F. ;
||Research Triangle Inst., Research Triangle Park, NC.;Industrial Environmental Research Lab., Research Triangle Park, NC.
||47U-1915; EPA-68-02-3186; EPA-600/7-82-062;
Air pollution control equipment ;
Pilot plants ;
Industrial wastes ;
Combustion products ;
Performance evaluation ;
Tetrafluoroethylene resins ;
Glass fibers ;
Fabric filters ;
||Some EPA libraries have a fiche copy filed under the call number shown.
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.