Pulsed power production of ozone using nonthermal gas discharges

A numerical study of species and electric field distributions in pulsed DBD in oxygen for ozone generation

“…The presence of a dielectric layer mitigates against the development of an arc discharge, and thus promotes the development of streamer discharge. Meanwhile, the dielectric layer reduces the charge transported by a single streamer and distributes the streamers over a wide area near the dielectric layer [1]. Chalmers [2] obtained ozone yield of around 300 g/kWh in oxygen wire-cylinder pulsed DBD.…”

Ozone Generation by Pulsed Streamer Discharge in Air

“…With three oxygen atoms bonded together, it is a powerful but unstable oxidant, although having a half life of only between about 7 and 20 minutes. Nevertheless, when compared with alternatives such as the chlorination process (Samaranayake W., 2000;Buntat Z, 2003;Chalmers I D, 1994;, it offers a number of significant advantages, in particular its lower energy consumption (Samaranayake W., 2000;Buntat Z, 2003;Chalmers I D, 1994;Buntat Z, 2005;Chalmers I D, 1996;Samaranayake, 2001). As a consequence of its attractive properties, many methods of enhancing the production rate of ozone have been investigated.…”

“…Use of a pulsed streamer discharge [PSD] technique can alleviate this problem, since the energy in the short duration fast rising pulse required to accelerate the electrons will be insufficient to lead to a breakdown (Chalmers, 1994;Chalmers, 1996;Samaranayake, 2001;Simek, 2002;Samaranayake, p.849-854). As a consequence, an intense streamer discharge is produced by the very effective ozone generation process.…”

“…As a consequence, an intense streamer discharge is produced by the very effective ozone generation process. Dielectric material may be added inside the chamber to distribute evenly the micro-discharges over the dielectric layer area (Buntat, 2003;Samaranayake, 2001;Samaranayake, p.849-854) and to prevent the propagation of a single discharge.…”

Industrial Applications of Pulsed Power Technology

“…Nonthermal plasmas have many kinds of chemically activate radicals, such as O, O 3 , N, N * , N 2 + and OH, which are generated by the dissociation and ionization of the ambient gases caused by the impact of energetic electrons. Using pulsed power technology, nonthermal plasmas have been generated by a pulsed electron beam [29] or a pulsed streamer discharge [30], and have been used to treat nitric oxides (NO X ) [31][32][33][34], sulfur dioxide (SO 2 ) [35][36][37], carbon dioxide (CO 2 ) [38] and volatile organic compounds (VOCs) [39,40], and to generate ozone [41][42][43][44][45][46]. Particularly, the treatment of exhaust gases (NO X and SO 2 ) using a pulsed streamer discharge has been studied for the past decade.…”