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

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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.

Original languageEnglish
Pages (from-to)2388 - 2394
Number of pages7
JournalIEEE Transactions on Plasma Science
Volume40
Issue number10
Early online date1 Mar 2012
DOIs
Publication statusPublished - Oct 2012

Keywords

  • air pollution
  • electrostatic precipitators
  • impulsive corona discharge
  • nanoparticles
  • PM2.5

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