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HIGH RESISTIVITY BEHAVIOR OF HOT-SIDE ELECTROSTATIC PRECIPITATORS
Citation:
Bickelhaupt, R. HIGH RESISTIVITY BEHAVIOR OF HOT-SIDE ELECTROSTATIC PRECIPITATORS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-80/076 (NTIS PB80193071), 1980.
Description:
The report gives results of experiments to explain the high resistivity behavior of hot-side electrostatic precipitators (ESPs) collecting fly ash. The working hypothesis is that the behavior is the result of the buildup of a thin layer of sodium-ion-depleted fly ash which has a high electrical resistivity near the collector plate. The hypothesis was tested by experiments in a miniature corona discharge device under thermal and environmental conditions simulating a hot-side ESP. Current density-voltage curves were taken with positive-negative corona using a hand-placed ash layer 5 mm thick. Three major experiments were conducted to evaluate the effect on current density-voltage relationships of: long exposure to negative corona, long exposure to positive corona, and cyclic exposure to negative and positive corona.