Operation of a Three-Electrode Reactor With Different Electrode Bias Potential Configurations

The three-electrode plasma reactor for the treatment of polluted gases combines a dielectric-barrier discharge with a remote third electrode, designed to enhance streamer propagation in a relatively large region. In this paper, experimental studies of the electrical magnitudes of the discharge for d...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2017-01, Vol.45 (1), p.54-59
Main Authors: Gallego, J. L., Minotti, F., Grondona, D.
Format: Article
Language:English
Subjects:
Atmospheric-pressure plasmas
Dielectrics
Discharge
Discharges (electric)
Electric potential
Electrodes
Gas flow
Inductors
plasma applications
Plasmas
Power supplies
Propagation
Reactors
Voltage measurement
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Summary:The three-electrode plasma reactor for the treatment of polluted gases combines a dielectric-barrier discharge with a remote third electrode, designed to enhance streamer propagation in a relatively large region. In this paper, experimental studies of the electrical magnitudes of the discharge for different electrode bias voltage configurations are presented. Also, the Laplacian electric field distribution in the interelectrode gap is calculated for each configuration. The degradation efficiency of NO in an N 2 atmosphere for the different configurations is also reported. It is found that the discharge is generated only for that electrode bias configuration for which the external electric field promotes the streamer propagation across the electrode gap. Also, for a triggered discharge, the reactor efficiency for the removal of NO changes with the different electrode bias configurations. This result can be explained in terms of the electric field intensity. The configuration with higher external electric field improves the number of streamers propagating in the interelectrode gap so that more reactive species generated in the streamers are effectively entrained in the gas flow to be treated.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2016.2631408