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Superposition of DC voltage and submicrosecond impulses for energization of electrostatic precipitators

Mermigkas, Athanasios and Timoshkin, Igor and MacGregor, Scott and Given, M and Wilson, Mark and Wang, Tao (2012) Superposition of DC voltage and submicrosecond impulses for energization of electrostatic precipitators. IEEE Transactions on Plasma Science, 40 (10). 2388 - 2394. ISSN 0093-3813

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Abstract

This paper discusses the development of an impulsive microelectrostatic precipitation technology, which uses superposition of submicrosecond high-field pulses and dc electric field. Short impulses allow the application of higher voltages to the ionization electrodes of a precipitation system without the initiation of breakdown. These higher levels of electric field generate higher ionic concentrations, resulting in more efficient charging of the airborne particles, and can potentially improve precipitation efficiency. This work is focused on the analysis of the behavior of impulsive positive corona discharges in a coaxial reactor designed for precipitation studies. The efficiency of precipitation of coarse and fine particles has been investigated using different dc and impulse voltage levels in order to establish optimal energization modes.