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Pulsed Electrical Excitation of Dielectric Barrier Discharge Reactors using Semiconductor Power Supplies
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 16, 2000 by SAE International in United States
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For practical application of non-thermal plasma enhanced selective catalytic reduction of NOx for Diesel cars compact low cost power supplies are necessary, which enable efficient plasma generation. The influence of pulsed electrical excitation of dielectric barrier discharges (DBD) on the conversion of NO to NO2 was investigated for various discharge gaps and exhaust gas temperatures: Using a thyratron switched HV power supply with a voltage pulse duration of about 100 ns, DBDs with discharge gaps up to 8 mm could be excited. Plasma energies of up to 50 mJ per pulse were obtained. At 220 °C the energy requirements for an NO-conversion of 50 % were determined to be 9.2 Wh/g NO. Up to 80 % plasma enhanced selective catalytic reduction of NO were obtained at an energy requirement of less than 6 Wh/g NOx.
Further experimental work was done using a compact semiconductor switched power supply with a voltage pulse duration of about 500 ns. Compared to the short pulse voltage source much lower peak current amplitudes were measured, but due to a longer current pulse duration plasma energies of up to 20 mJ per pulse were obtained, too. Maximum peak current amplitudes and maximum plasma energies per pulse increased significantly with increasing exhaust gas temperature. At 235 °C energy requirements of 9.2 Wh/g NO were determined for a 50 % DBD-induced NO-conversion.
CitationHammer, T., "Pulsed Electrical Excitation of Dielectric Barrier Discharge Reactors using Semiconductor Power Supplies," SAE Technical Paper 2000-01-2894, 2000, https://doi.org/10.4271/2000-01-2894.
SAE 2000 Transactions Journal of Fuels and Lubricants
Number: V109-4; Published: 2001-09-15
Number: V109-4; Published: 2001-09-15
- Aust M. Tost R. Wißler G. Fischer S. Zürbig J. “Exhaust Gas Aftertreatment System to meet EURO IV Emission Standards for Diesel Passenger Cars” 19 th Wiener Motorensymposium Vienna, Austria 1998
- Wißler G. Aust M. Henn J. Rabl H.-P. “DeNOx-systems with additives for passenger cars” IAA Aachen, Germany 1999
- Fritz N. Mathes W. Zürbig J. Müller R. “On-Road Demonstration of NOx Emission Control for Diesel Trucks with SINOx Urea SCR System” SAE Technical Paper Series, SAE paper no. 1999-01-0111 1999
- Hammer, Thomas Bröer, Stefan “Plasma Enhanced Selective Catalytic Reduction of NOx for Diesel Cars” SAE paper no. 982428 1998
- Hammer, Thomas Bröer, Stefan “Plasma Enhanced Selective Catalytic Reduction of NOx in Diesel Exhaust: Test Bench Measurements” Society of Automotive Engineers, SAE paper no. 1999-01-3633 1999
- Hammer, Thomas Kishimoto, Tetsuo Miessner, Hans Rudolph, Rolf “Plasma Enhanced Selective Catalytic Reduction: Kinetics of NOx-Removal and Byproduct Formation” Society of Automotive Engineers, SAE paper no. 1999-01-3632 1999
- Niessen, Wolfgang Wolf, Oliver Schruft, Reiner Neiger, Manfred “The influence of ethene on the conversion of NOx in a dielectric barrier discharge” J. Phys. D: Appl. Phys. 31 542 550 1998
- Grothaus, M.G. Fanick, E.R. “Investigation of a Pulsed Corona Reactor for Heavy-Duty Diesel Engine Emissions Reduction” 23rd Int. Power Modulator Symposium Rancho Mirage, CA, USA 22-25 June 1998 Conference Record IEEE New York, NY, USA 20 23 1998
- Slone, Ralph Ramavajjala, Madhu Palekar, Vishwesh Puchkarev, Victor “Pulsed corona plasma technology for the removal of NOx from Diesel exhaust” Society of Automotive Engineers, SAE paper no. 982431 1998
- Puchkarev, Victor Roth, Greg Gundersen, Martin “Plasma processing of diesel exhaust by pulsed corona discharge” Society of Automotive Engineers, SAE paper no. 982516 1998
- Hammer, Thomas Bröer, Stefan Kishimoto, Tetsuo “Pulsed Excitation of Silent Discharges for Diesel Exhaust Treatment” J. Adv. Oxid. Technol. 4 4 368 374 1999
- Eliasson B. Kogelschatz U. “Nonequilibrium Volume Plasma Chemical Processing” IEEE Trans. Plasma Science 19 6 1063 1077 1991