DocumentCode :
1357856
Title :
Reduction of NOx from combustion flue gases by superimposed barrier discharge plasma reactors
Author :
Urashima, Kuniko ; Chang, Jen-Shih ; Ito, Tairo
Author_Institution :
Dept. of Eng. Phys., McMaster Univ., Hamilton, Ont., Canada
Volume :
33
Issue :
4
fYear :
1997
Firstpage :
879
Lastpage :
886
Abstract :
NOx reduction from combustion flue gases by superimposed barrier discharge plasma reactors is experimentally investigated. The experiments are conducted for applied voltages from 0 to 28 kV, flue gas rates from 0.5 to 2 L/min, ammonia mixture concentrations from 0.7 to 2.65 stoichiometry, and applied voltage phase differences from 0° to 180°, where two 60-Hz AC power supplies are used. The results show the following: (1) NOx reduction rate decreases with increasing discharge power for surface discharge operations, however, NOx reduction rate increases with increasing discharge power for silent and superimposing discharge operating modes; (2) NOx reduction rate increases with increasing discharge power, gas flow rate and ammonia stoichiometry under in-phase operations; (3) NOx reduction rate for out-of-phase operations is much higher compared with in-phase operations, however, NOx reduction rate has an optimum condition on ammonia stoichiometry, discharge power, and gas flow rate; and (4) energy efficiency of NOx reduction increases with increasing ammonia mixture and gas flow rate and decreases with increasing discharge power
Keywords :
air pollution control; combustion; nitrogen compounds; plasma applications; plasma devices; surface discharges; 0 to 28 kV; 60 Hz; AC power supplies; NH3; NO; NOx reduction; NOx reduction rate decrease; ammonia mixture concentrations; ammonia stoichiometry; applied voltage phase differences; combustion flue gases; discharge power; discharge power increase; energy efficiency; gas flow rate; in-phase operations; out-of-phase operations; silent discharge; superimposed barrier discharge plasma reactors; superimposing discharge operating modes; surface discharge operations; Combustion; Energy efficiency; Flue gases; Fluid flow; Indium tin oxide; Inductors; Plasma simulation; Plasma temperature; Surface discharges; Voltage;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/28.605727
Filename :
605727
Link To Document :
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