Polarity reversing circuit for electrostatic precipitator...

Details Polarity reversing circuit for electrostatic precipitator... Polarity reversing circuit for electrostatic precipitator...

2006-09-05

2006-09-05

Chiesa, Richard L. (Department: 1724)

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

C096S031000, C096S032000, C096S080000, C323S903000

Reexamination Certificate

active

07101422

ABSTRACT:
A gas separation apparatus using electrostatic precipitators and mechanical rappers is enhanced by the addition of an opposite polarity refreshing power supply and a switching arrangement. The switching components selectively disconnect the primary power supply and connect the refreshing power supply to the electrostatic precipitator, causing an electrical impulse in the precipitator sufficient to dislodge precipitate from the collector plates. An RC filter is further provided to control the impulse and reduce the burden that would otherwise be placed upon the refreshing power supply. The novel separation apparatus and technique offer particular synergy when applied to the effluent stream from a coal-fired electric power plant or other similar gas streams.

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