NO/sub x/ removal by a pipe with nozzle-plate electrode corona discharge system

Pulsed Streamer Corona Reactor Characterization - Phase II

“…Figure 1 compares the energy efficiency of NO removal at high concentrations of NO by Mizuno et al (1995) and Tas (1995), and Figure 2 shows a summary of energy efficiency of NO removal at low concentrations of NO by Masuda et al (1990) and Ohkubho et al (1994). As seen in Figure 1, the addition of 500 ppm of ethylene increased the NO removal for the same power per unit volume divided by the square root of time in dry air.…”

“…The data of Mizuno et al (1995) andTas (1995) for the case of NO removal in the presence of water are very close. shows that the NO removal in the presence of ammonia considered by Masuda and Nakao (1990) was far different from that observed by Ohkubho et al (1994). In all of the above cases where NO removal was considered by pulsed streamer corona discharge, there were certain dissimilarities such as the nature of the electrode and the polarity of the field.…”

Removal of SO2 and NOx from Flue Gas by Pulsed Corona Discharges

“…Efforts were also made to develop suitable additives catalysts [14, 151 for small-scale cleaning systems. A number of novel reactors and experimental systems have been developed, including semi-wet-type plasma reactor [ 161, wet low-temperature corona reactor [17], pipe-type corona discharge system with nozzle-plate [ 181, and shower system for time-dependent NOx removal rate [19], superimposed bamer discharge plasma reactors [20]. It has also been shown that the three major air pollutants (soot, NOx, and SOX) can be simultaneously removed from diesel engine exhaust gas [21].…”

Electrostatic Separation of Carbon Dioxide by Ionization in Bifurcation Flow

“…Metallic getter alloys are also used for gas purification (Briesacher et al, 1991). Although this method removes trace impurities Recently, behaviors of ions, radicals and molecular species have been studied for the purpose of gas cleaning and purification from gas stream by corona discharge (Ohkubo et al, 1994), surface discharge (Oda et al, 1997) and electron beam injection (Hirota et al, 1995), etc. However these methods using high discharge energy are not effective for lowering the concentration of CO 2 .…”