EMISSION CONTROL DEVICE AND METHOD

摘要

An emission control device and method are provided for treating exhaust gase s to reduce gaseous pollutants contained therein. The device includes a treatment chamber (12) through which the exhaust gases pas s. First and second metal screens (18, 20) are disposed within the chamber a predetermined distance from each other. A section of chemical substrate (19) is disposed between the screens. Voltage is supplied to adjacent the first screen (18) with, for example, an electrode device (24). A timing circuit (38) is provided for pulsing the voltage at a predetermined pulse rate. A temperature sensitive device (42) m ay be interfaced with the treatment chamber (12) and timing circuit (38) so that the pulsed voltage is only supplied to the screen (18) within a predetermined temperature range.