Development of EHD-enhanced plasma electrostatic precipitator

Abstract

The novel device is able to not only collect the low resistive particles generated from diesel engine but also incinerate captured particulates within the same reactor. The new electrohydrodynamically (EHD)- enhanced plasma ESP (EHD plasma ESP) is to utilizes the ionic wind to transport the charged particles effectively into the low electrostatic field region where electrostatic repulsion force acting on particles by induction charge becomes very small, resulting in reentrainment suppression. At the same time, collected particulates are incinerated by ozone and oxidation product of NO2 in the flue gas by the surface discharge plasma, so that no particle handling device is required. The particle-size dependent collection efficiency and particle incineration were evaluated by the Scanning Mobility Particle Sizer (SMPS) and particle counter (PC). This device is particularity important applications for automobile and marine diesel engine emission control.