Patent ID: 6321531
Filing Date: 2001-11-27
Classification: B01D,C10L,F01N,F02M,Y02T

Abstract:
An apparatus for reducing at least one pollutant in a gas stream containing gas formed from the oxidation of fuel, the apparatus comprising:a catalyst, having an inlet and an outlet, wherein the catalyst is positioned such that at least a portion of the gas stream passes through the catalyst;a corona discharge device for producing a corona discharge in the gas stream, the corona discharge device comprising a first electrode, a second electrode positioned a distance from the first electrode, and a dielectric material positioned between the first electrode and the second electrode; anda high frequency power supply having an operational frequency of at least about 1,000 Hz adapted to provide electrical power to the corona discharge device, whereinat least a portion of the gas stream is exposed to the corona discharge to produce radicals from gaseous species in the gas stream, and the radicals are introduced into the gas stream at a point upstream of the outlet of the catalyst.