Gas separation: processes – Electric or electrostatic field – With cleaning of collector electrode
Reexamination Certificate
2006-02-21
2006-02-21
Chiesa, Richard L. (Department: 1724)
Gas separation: processes
Electric or electrostatic field
With cleaning of collector electrode
C095S076000, C096S030000, C096S031000, C096S032000, C323S903000
Reexamination Certificate
active
07001447
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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Altman Ralph F.
Guenther Robert N.
Nichols Grady B.
Chiesa Richard L.
Electric Power Research Institute
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