Coaxial Pulsed Corona Reactor for Treatment of Hazardous Gases

Grothaus, M.G.; Hutcherson, R.K.; Korzekwa, R.; Roush, R.A.; Brown, Richard J.; Engels, R.

doi:10.1109/ppc.1993.512972

Cited by 11 publications

(3 citation statements)

References 4 publications

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“…For VOC treatment, most research has been done using DBD, often combined with catalysts [96][97][98][99][100][101][102][103]. Regarding energy efficiency, pulsed discharge is a promising method [104][105][106][107].…”

Section: Voc Treatmentmentioning

confidence: 99%

Nanosecond pulsed streamer discharges: II. Physics, discharge characterization and plasma processing

Wang

Namihira

2020

Plasma Sources Sci. Technol.

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Nanosecond pulsed streamer discharge has unique characteristics that differentiate it from longer discharges. The very fast voltage rise time, peak voltage plateau, short pulse duration, and fast fall time enable a large volume of uniform nonthermal plasma generation at atmospheric pressure. This review explains the physics of nanosecond discharge plasma through experimental and simulated studies for plasma processing techniques. The following are discussed and compared between sub-microsecond and nanosecond discharge plasma: discharge phase transition, discharge propagation, production of chemically active species, temperature change of gas during plasma propagation, electrode geometry, effect of voltage rise rate, voltage polarities, and N 2 /O 2 gas composition ratio in air seeding gas. Nanosecond pulse discharge plasma is characterized by a considerably faster streamer head propagation velocity and reduced gas heating, resulting in a higher energy efficiency for plasma processing. Ozone generation, nitric oxide treatment and volatile organic compound treatment results are given as examples of plasma processing.

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Section: Voc Treatmentmentioning

confidence: 99%

Nanosecond pulsed streamer discharges: II. Physics, discharge characterization and plasma processing

Wang

Namihira

2020

Plasma Sources Sci. Technol.

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“…Each experiment run is carried out three times. The results obtained from the design matrix are analyzed by Design-Expert 8.0.6 and a theoretical model demonstrating the relationship between the ozone generation and pulse parameters is proposed based on the analysis results, as presented in equation (6).…”

Section: Effect Of Pulse Parameters Variation On Radical Generationmentioning

confidence: 99%

“…The streamer channel generated in a pulsed streamer discharge can create a chemically reactive environment including radicals, excited ions and particles through the electron impact processes [5]. Furthermore, by using the pulse power supply to engender a streamer discharge, the energy efficiency of radical generation can be greatly improved [5,6]. Due to the short rise time and pulse width of the pulse power, most of the energy is consumed to accelerate the electrons rather than the gas molecule, which makes it efficient to produce the radical species.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal analysis of streamer discharge in a wire-to-wire reactor with positive nanosecond pulse supply

Liu¹,

Li²,

Peng³

et al. 2020

J. Phys. D: Appl. Phys.

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The spatial and temporal distribution of the discharge streamers in positive pulsed wire-to-wire electrode configuration in atmospheric air is investigated by an electrical-optical diagnostic system. Time-resolved ICCD images show that the discharge streamers in wire-to-wire electrode develop in three phases: the primary streamer, the secondary positive streamer, and the secondary negative streamer. It is observed that the evolution of discharge streamers is strongly influenced by the amplitude of the applied voltage. The optical emission spectroscopy measurement of hydroxyl radical OH indicates that the OH is mainly generated in the secondary positive streamer near the anode region. But in the region near the cathode the emission of OH radicals can also be detected due to the secondary negative streamer. The influences of rise time, fall time and pulse duration on streamer dynamics and the subsequent radical production are observed. It is shown that the average propagation velocity of the primary streamer decreases with the increase of the rise time, while the variation of pulse width and pulse duration parameters have little effect on that of the primary streamer. The response surface methodology based on Box–Behnken design model is implemented to evaluate the contribution of the three critical pulse parameters on ozone production. The results of the response surface quadratic model show that the pulse rise time plays the most prominent role in the generation of ozone among the three pulse parameters of rise time, fall time and pulse duration.

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