Patent ID: 6038854
Filing Date: 2000-03-21
Classification: B01D,F01N,Y02A,Y02T

Abstract:
A method for reducing nitrogen oxides (NO.sub.x) and particulates in oxygen-rich exhausts from high-temperature combustion, the method comprising the steps of:converting substantially all NO in an engine exhaust comprising greater than about 5 ppmw of sulfur components, calculated as S, with a non-thermal plasma to an intermediate gas flow including NO.sub.2 ;collecting particulates from said engine exhaust; andconverting said particulates and substantially all of said intermediate gas flow including NO.sub.2 to an output gas flow comprising NO.sub.2 conversion products of N.sub.2, CO.sub.2 and H.sub.2 O and substantially little carbon soot, NO and NO.sub.2 (NO.sub.x).