Large Scale Purification of Contaminated Air.

摘要

This patent application discloses an invention related to purification of contaminated air on a large scale basis by exposure to the decomposing action of microwave energy generated plasma. A weakly ionized plasma is generated by continuous high-power microwave within a dielectric cavity positioned in a slow waveguide. Contaminated air under atmospheric pressure is exposed to the plasma within the waveguide cavity for a limited saturation time controlled by inflow at a regulated flow rate. During such limited saturation time, the contaminated air is purified by sequential ionization and recombination under an electron temperature resulting in a microwave discharge plasma dominated by atomic oxygen at a relatively high saturation density level together with atomic nitrogen at a relatively low density level.