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Abstract-Successful introduction of pulsed corona for industrial purposes very much depends on the reliability of highvoltage and pulsed power technology and on the efficiency of energy transfer. In addition, it is of the utmost importance that adequate electromagnetic compatibility (EMC) is achieved between the high-voltage pulse source and the surrounding equipment.Pulsed corona is generated in a pilot unit that produces narrow 50 MW pulses at 1000 pps (net average corona power 1.5 kW). The pilot unit can run continuously for use in industrial applications such as cleaning of gases (100 m 3 /h) containing NO or volatile organic compounds (VOC's) or fluids (e.g., waste water). Simultaneous removal of NO and ethylene to obtain clean CO 2 from the exhaust of a combustion engine was tested at an industrial site.Various chemical processes, such as removal of toluene or styrene from an airflow are tested in the laboratory. We developed a model to analyze the conversion of these pollutants. To examine the discharges in the reactor we use current, voltage, and E-field sensors as well as a fast charge-coupled device (CCD) camera. Detailed energy input measurements are compared with CCD movies to investigate the efficiency of different streamer phases.EMC techniques incorporated in the pilot unit are based on the successful concept of constructing a low transfer impedance between common mode currents induced by pulsed power and differential mode voltages in signal lines and external main lines.

Summary: This paper discusses some critical issues of developing industrial streamer corona plasma systems for gas cleaning. Based on streamer generation and interaction between power sources and reactors, two energization methods, namely hybrid‐pulsed power source (HPPS) and DC‐superimposed, high‐frequency AC oscillation (DC/AC), were developed for industrial applications. As an example, a result of an industrial investigation on odor emission abatement is presented. The data available is sufficient enough for the commercial‐scale design of a corona plasma system for DeNOx, DeSO2, deodorization and dust removal. We foresee that by retrofitting available ESPs, plasma‐based gas‐cleaning systems will be applied in the near future to simultaneously remove polluting gases, heavy metals, and particles.

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