Title :
Narrow pulsed corona discharge for depollution
Author :
Bajeu, George ; Mustata, Ion ; Lungu, Cristian P. ; Musa, Geavit
Author_Institution :
Inst. of Phys. & Technol. of Mater., Bucharest, Romania
Abstract :
For chemical reactions promoted by the electrical discharges, the use of short pulse discharges presents certain advantages over the DC ones. Mainly, the nanosecond pulse duration avoids the energy consumption for ion drifting on one hand and allows high electric fields to be obtained due to the insignificant space charge on the other hand. A nanosecond range pulse generator and the characteristics of the corona discharges in a cylindrical cell are described. Sawtooth pulses having 40 kV peak voltages, 0.36-0.8 kV/ns rising rates, 300 ns full width at half height and 50 Hz repetition frequency are applied on the central electrode of the corona cell. The obtained peak corona currents are over 10 A. This equipment will be used for NOx and SO2 removal from flue gas
Keywords :
air pollution; air pollution control; corona; flue gas desulphurisation; pollution control; pulse generators; pulsed power technology; thermal power stations; waveform generators; 10 A; 300 ns; 40 kV; 50 Hz; NO; NOx removal; SO2; SO2 removal; cylindrical cell; depollution; electrical discharges; energy consumption; flue gas treatment; ion drifting; nanosecond range pulse generator; narrow pulsed corona discharge; sawtooth pulses; short pulse discharges; space charge; Chemicals; Corona; Electrodes; Energy consumption; Flue gases; Frequency; Pulse generation; Space charge; Space vector pulse width modulation; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377638
