Multi-Stage Pulsed Corona Discharge System for Reduction of NOx Emission from Diesel Engine Vehicle

Park, Moon-Cheol; Chang, Duck-Rye; Woo, Mee-Hye; Nam, Gnu; Lee, Seong-Poong

doi:10.4271/982514

Cited by 7 publications

(1 citation statement)

References 15 publications

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“…For realization of different types of electric discharges in electrophysical devices intended for reduction of the toxicity of exhaust gases (EG) the following basic configurations of electrode systems are used: point-plane [1][2][3], thin wire in tube [4,5], thin wire-plane [6,7], tube in tube [8,9], and packed-bed reactors [8,10,11]. In practice, each of the presented electrode systems can have a wide variety of designs and several basic variants can be used in a specific device simultaneously.…”

Section: Udc 53646mentioning

confidence: 99%

Pulse-periodic discharge in a plasmachemical ferroelectric packed-bed reactor

Жданок

Vasil’ev

Vasetskii

2005

J Eng Phys Thermophys

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Section: Udc 53646mentioning

confidence: 99%

Pulse-periodic discharge in a plasmachemical ferroelectric packed-bed reactor

Жданок

Vasil’ev

Vasetskii

2005

J Eng Phys Thermophys

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Non-thermal plasma mitigation of low concentration of air pollutants: removal of isopropyl alcohol using transition metal-oxide integration

Kandukuri,

Das,

Mudadla

et al. 2024

Environ Sci Pollut Res

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Reticulated vitreous carbon electrodes for gas phase pulsed corona reactors

Looke

Kirkpatrick

Hanson³

et al. 2000

IEEE Trans. on Ind. Applicat.

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, AFRL-ML-TY-TP-1999-454611. SUPPLEMENTARY NOTES 12a. DISTRIBUTION AVAILABILITY STATEMENTApproved for Public Release; Distribution Unlimited ABSTRACT (Maximum 200 words) 12b. DISTRIBUTION CODEA new design for gas phase pulsed corona reactors incorporating reticulated vitreous carbon electrodes is demonstrated to be effective for the removal of nitrogen oxides from synthetic air mixtures. The reactor consists of a plexiglass tube with porous reticulated carbon disk electrodes placed perpendicularly to the cylinder axis. Streamers propagate between the reticulated carbon disks providing a uniform exposure of the flowing gas stream to the electrical discharge. This mode of operation allows for convenient reactor scale-up and staging while maintaining the inter-electrode spacing in a moderate range, thus precluding the need for higher voltage power supplies. It is father envisioned that the reactor can be operated with multiple sets of electrodes placed in series down the length of the reactor in order to facilitate high efficiency removal of air pollutants.Initial experiments-with nitrogen oxide (NO) mixed in dry synthetic air at room temperature and pressure shows that the NO, as expected in an oxidizing environment, is converted to nitrogen dioxide with pulsed corona treatment. Most remarkable, however, is that for the higher operating voltages (55 and 61 kV) and longer residence times (above 24 sec.) the nitrogen dioxide and total N02, even in dry air, was reduced. Abstract -A new design for gas phase pulsed corona reactors incorporating reticulated vitreous carbon electrodes is demonstrated to be effective for the removal of nitrogen oxides from synthetic air mixtures. The reactor consists of a plexiglass tube with porous reticulated carbon disk electrodes placed perpendicularly to the cylinder axis. Streamers propagate between the reticulated carbon disks providing a uniform exposure of the flowing gas stream to the electrical discharge. This mode of operation allows for convenient reactor scale-up and staging while maintaining the inter-electrode spacing in a moderate range, thus precluding the need for higher voltage power supplies. It is further envisioned that the reactor can be operated with multiple sets of electrodes placed in series down the length of the reactor in order to facilitate high efficiency removal of air pollutants.Initial experiments with nitrogen oxide (NO) mixed in dry synthetic air at room temperature and pressure shows that the NO, as expected in an oxidizing environment, is converted to nitrogen dioxide with pulsed corona treatment. Most remarkable, however, ...

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Multi-Stage Pulsed Corona Discharge System for Reduction of NOx Emission from Diesel Engine Vehicle

Cited by 7 publications

References 15 publications

Pulse-periodic discharge in a plasmachemical ferroelectric packed-bed reactor

Pulse-periodic discharge in a plasmachemical ferroelectric packed-bed reactor

Non-thermal plasma mitigation of low concentration of air pollutants: removal of isopropyl alcohol using transition metal-oxide integration

Reticulated vitreous carbon electrodes for gas phase pulsed corona reactors

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