TY - JOUR
T1 - NOx diesel exhaust treatment using a pulsed corona discharge
T2 - The pulse repetition rate effect
AU - Yankelevich, Y.
AU - Wolf, M.
AU - Baksht, R.
AU - Pokryvailo, A.
AU - Vinogradov, J.
AU - Rivin, B.
AU - Sher, E.
PY - 2007/5/1
Y1 - 2007/5/1
N2 - The pulsed corona offers real promise for degradation of pollutants in gas and water streams. This paper presents a study of NOx removal from diesel exhaust. Special emphasis is laid on the investigation of the dependence of the NO removal rate and efficiency on the pulse repetition rate (PRR). A nanosecond solid state power supply (45 kV, 60 ns, up to 1 kHz) was used for driving the corona reactor. A Mitsubishi 10 kW 3-cylinder diesel-generator engine with a total volume of 1300 cm3 was used as a source of exhaust gas. At an NO removal rate of 35% the NO removal efficiency was 53 g kW-1h-1 for PRR ≤ 500 Hz and the initial NO concentration was 375 ppm. A semi-empirical expression for the corona reactor removal efficiency related both to PRR and to the residence time is presented. The removal efficiency decreases with increasing PRR at constant flow rate or constant residence time. This expression demonstrates reasonable agreement between the calculation results and the experimental data.
AB - The pulsed corona offers real promise for degradation of pollutants in gas and water streams. This paper presents a study of NOx removal from diesel exhaust. Special emphasis is laid on the investigation of the dependence of the NO removal rate and efficiency on the pulse repetition rate (PRR). A nanosecond solid state power supply (45 kV, 60 ns, up to 1 kHz) was used for driving the corona reactor. A Mitsubishi 10 kW 3-cylinder diesel-generator engine with a total volume of 1300 cm3 was used as a source of exhaust gas. At an NO removal rate of 35% the NO removal efficiency was 53 g kW-1h-1 for PRR ≤ 500 Hz and the initial NO concentration was 375 ppm. A semi-empirical expression for the corona reactor removal efficiency related both to PRR and to the residence time is presented. The removal efficiency decreases with increasing PRR at constant flow rate or constant residence time. This expression demonstrates reasonable agreement between the calculation results and the experimental data.
UR - http://www.scopus.com/inward/record.url?scp=34247493290&partnerID=8YFLogxK
U2 - 10.1088/0963-0252/16/2/023
DO - 10.1088/0963-0252/16/2/023
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AN - SCOPUS:34247493290
SN - 0963-0252
VL - 16
SP - 386
EP - 391
JO - Plasma Sources Science and Technology
JF - Plasma Sources Science and Technology
IS - 2
M1 - 023
ER -