Destruction of gaseous pollutants by surface-induced plasma chemical process (SPCS)

摘要

The surface discharge-induced plasma chemical process (SPCP) has great advantages in the destruction of various gaseous pollutants (NO/sub x/, SO/sub x/, CO, Freons, etc.), air toxicants (Hg vapor, hazardous solvent vapors, etc.), and odors because of its unique features: a very strong decomposition capability for stable contaminant gases, its compact size, and its low cost. A ceramic-made reactor is used for generation of high-frequency surface discharge to produce a planar plasma region over its surface. The gas containing pollutants is contacted in this region and exposed to copious radicals (OH, O, O/sub 3/, N, NH/sub 2/, NH, H, etc.) to be decomposed of or oxidized. This process has a very wide application range: from diesel engines, industrial furnaces, incinerators, and food processors to larger industrial boilers. The first application of SPCP was extremely small ozonizers with very high performance, but a number of new application fields are being developed.