Title :
Gas cleaning with semi-wet type plasma reactor
Author :
Chakrabarti, Alokkumar ; Mizuno, Akira ; Shimizu, Kazuo ; Matsuoka, Tsutomu ; Furuta, Satoshi
Author_Institution :
McMaster Univ., Hamilton, Ont., Canada
Abstract :
An experimental study on the removal of NH3, NO, NOx in concentration of 10-40 ppm in air has been carried out using plasma chemical reactions in a streamer corona discharge. The results of the performance of dry type and semi-wet type reactors are compared. The effects of different type of applied voltages such as rectangular pulse, 60-Hz sinusoidal, and 18-kHz alternating voltages are investigated. During NO removal, O3 and NO2 are produced. NO2 can, partially, be removed with higher power input into the discharge. Another undesirable pollutant, namely N2 O, is also produced, especially, in case of dry reactors having long residence time (~2.4 s). N2O production decreases, essentially, to zero at 0.6-s residence time while using a semi-wet reactor. In general, higher removal efficiency has been obtained with pulse voltage in a semi-wet reactor. NH3 in air appears to produce ozone and ammonium nitrate in a discharge. The performance of semi-wet reactors an the removal of submicron dust particles has also been investigated and very high removal efficiency (~93% at 0.6-s residence time) has been obtained
Keywords :
air pollution; air pollution control; ammonia; corona; nitrogen compounds; plasma applications; 0.6 s; 18 kHz; 18-kHz alternating voltage; 2.4 s; 60 Hz; 60-Hz sinusoidal voltage; 93 percent; N2O; NH3; NO; NO2; NOx; O3; ammonium nitrate; gas cleaning; plasma chemical reactions; pulse voltage; rectangular pulse voltage; removal efficiency; semi-wet type plasma reactor; streamer corona discharge; submicron dust particles removal; Air pollution; Cleaning; Corona; Environmentally friendly manufacturing techniques; Inductors; Industrial pollution; Plasma chemistry; Power generation; Production facilities; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
