Gas separation: processes – Electric or electrostatic field – With addition of solid – gas – or vapor
Patent
1997-09-25
1999-11-09
Chiesa, Richard L.
Gas separation: processes
Electric or electrostatic field
With addition of solid, gas, or vapor
95 60, 96 74, 96223, 110216, 110345, 422 21, 422 22, 422121, B03C 3013
Patent
active
059806109
ABSTRACT:
An apparatus and process that utilize a low temperature nonequilibrium plasma reactor, for improving the particulate removal efficiency of an electrostatic precipitator (ESP) are disclosed. A portion of the flue gas, that contains a low level of SO.sub.2 O.sub.2 H.sub.2 O, and particulate matter, is passed through a low temperature plasma reactor, which defines a plasma volume, thereby oxidizing a portion of the SO.sub.2 present in the flue gas into SO.sub.3. An SO.sub.2 rich flue gas is thereby generated. The SO.sub.3 rich flue gas is then returned to the primary flow of the flue gas in the exhaust treatment system prior to the ESP. This allows the SO.sub.3 to react with water to form H.sub.2 SO.sub.4 that is in turn is absorbed by fly ash in the gas stream in order to improve the removal efficiency of the EPS.
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Gorski Anthony J.
Huang Hann-Sheng
Chiesa Richard L.
Dvorscak Mark P.
LaMarre Mark F.
Moser William R.
The United States of America as represented by the United States
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