Title :
NO/sub x/ and SO/sub 2/ removal by pulsed power at a thermal power plant
Author :
Tsukamoto, S. ; Namihira, T. ; Wang, D. ; Katsuki, S. ; Akiyama, H. ; Nakashima, E. ; Sato, A. ; Uchida, Y. ; Koike, M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Kumamoto Univ., Japan
Abstract :
Recently various methods involving gas discharges and electron beams have been studied for the removal of NO/sub x/ and SO/sub 2/ from flue gases. The recent development of repetitive pulsed power generators gives the pulsed streamer corona discharges a chance of success in the removal of NO/sub x/ and SO/sub 2/. Experiments for the removal of NO/sub x/ and SO/sub 2/ using actual flue gases were performed at a thermal power plant. The results showed that about 90% of NO and about 50% of SO/sub 2/ were removed at a flow rate of 0.8 l/min and a repetition rate of 7 pulses per second (pps). The removal ratio of NO varied inversely proportional to the gas flow rate. The energy efficiency of NO removal was 900 /spl mu/mol/Wh when 50% of NO was removed.
Keywords :
air pollution control; corona; discharges (electric); flue gas desulphurisation; nitrogen compounds; pulse generators; pulsed power supplies; sulphur compounds; thermal power stations; NO; NO/sub x/ removal; SO/sub 2/; SO/sub 2/ removal; air emissions control; electron beams; energy efficiency; gas discharges; pulsed power; pulsed streamer corona discharges; removal ratio; repetition rate; repetitive pulsed power generators; thermal power plant; Cables; Combustion; Corona; Discharges; Electron beams; Flue gases; Power generation; Pulse generation; Space vector pulse width modulation; Voltage;
Conference_Titel :
Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5498-2
DOI :
10.1109/PPC.1999.823772
