Title :
Average 120-kW MPC modulator for plasma de-NOx/de-SOx system
Author :
Oh, J.S. ; Jang, S.D. ; Son, Y.G. ; Cho, M.H. ; Namkung, W. ; Koh, D.J.
Author_Institution :
Pohang Accelerator Lab., POSTECH, Pohang, South Korea
fDate :
30 June-3 July 2002
Abstract :
The pulsed corona discharge process shows the encouraging results for the removal of NOx and SOx gases based on small-scale experiments. The lifetime and the reliability of the system are major difficulties to realize this newly developed technology because the downtime for maintenance affects the plant availability. The combination of a high power solid-state switch with a magnetic pulse compressor (MPC) is a suitable scheme to meet these requirements. An average 120-kW MPC modulator has been constructed and tested with a plasma reactor for an industrial incinerator plant. The plasma reactor has wire-plate electrodes and can treat the gas of 50000 Nm3/Hr. This modulator can generate 150 kV pulses with 500 nsec (FWHM) pulse width, and 300 Hz repetition rate. This paper presents design details and the operational characteristics of the MPC modulator.
Keywords :
air pollution control; corona; modulators; nitrogen compounds; plasma applications; plasma devices; pulse generators; pulsed power supplies; sulphur compounds; 120 kW; 300 Hz; 500 ns; NOx; NOx gas removal; SOx; SOx gas removal; high power solid-state switch; industrial incinerator plant; magnetic pulse compressor; maintenance downtime; modulator; plant availability; plasma de-NOx/de-SOx system; plasma reactor; pulsed corona discharge process; reliability; repetition rate; wire-plate electrodes; Corona; Gases; Inductors; Magnetic materials; Photonic crystals; Plasma applications; Power system reliability; Pulse width modulation; Space vector pulse width modulation; Switches;
Conference_Titel :
Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Conference Record of the Twenty-Fifth International
Print_ISBN :
0-7803-7540-8
DOI :
10.1109/MODSYM.2002.1189546
