Patent ID: 6168689
Filing Date: 2001-01-02
Classification: B01D,B03C,F01N,Y02T

Abstract:
A method for cleaning exhaust gas by using a high voltage field, which comprises the successive steps: (a) partitioning granular particles in the exhaust gas by means of ionizing the granular particles present in the exhaust gas by using electric discharge and then diffusing the exhaust gas at high speed by using a bottle-necked attractor electrode and burning up large granular particles with corona discharge; (b) burning minute granular particles, which are not removed in step (a), under plasma atmosphere; (c) further burning the minute particles by using AC voltage and DC voltage; (d) removing noxious gas component present in the exhaust gas with negative ions generated by an ionization unit; and (c) oxidizing NO.sub.x present in the exhaust gas with ozone generated by an ultraviolet ray and removing oxidized NO.sub.x by dissolving the same in H.sub.2 O generated from heat exchange with PN diodes.