Multi-stage gaseous pollutant destruction apparatus and method

摘要

A corona discharge pollutant destruction system has two or more corona discharge reactors (34a-34n) in series, with each stage optimized for either oxidation of hydrocarbons (HC) and carbon monoxide (CO) or reduction of nitrogen oxides (NOx). The reactors (34a-34n) may be arranged with initial oxidation stages followed by reduction stages. Alternatively, the oxidation and reduction reactors (34a-34n) may be arranged in alternate stages, with each oxidation reactor followed by a reduction reactor. The treatment of different pollutants by different reactors (34a-34n) is achieved by supplying the different reactors (34a-34n) with different power levels. <IMAGE>