IDEA #7B2VKE Ozone Generators With The Barrierless Gas Discharge

OZONE GENERATORS WITH THE BARRIERLESS GAS DISCHARGE APPLIED RESEARCH • PLASMAPHYSICS AND TECHNOLOGY Description The ozone application market has been strongly increasing dur(cid:2) ing last decades. Interest to ozone technologies is caused by unique properties of ozone as strong oxidizing and bactericidal agent. Besides, ozone technologies are environmentally friend(cid:2) ly and this fact increases consumer attraction for application of ozone in the production of goods, servicing and MEDICINE. The key device for the ozone technology is ozone generator. At the present, a silent or barrier discharge for ozone generators are most widely used. At the same time, the expansion of areas for ozone application makes demand for development of alternative methods for ozone generation. One of the advanced methods is a barrierless discharge. In the NSC KIPT a new ozone generators with barrierless elec(cid:2) trode system and high(cid:2)voltage pulsed power supply have been developed. The barrierless ozone generators have a high relia(cid:2) bility due to elimination of the dielectric barrier from discharge gap. It excludes the damage of electrode system in case of acci(cid:2) dental spark breakdowns. The barrierless ozone generator has significantly low gas(cid:2)dynamic resistance because the discharge gap is a wider. Besides, the electronic control system of the ozonizer improves operating characteristics of the ozone gener(cid:2) ator. The advantage of the barrierless ozone generator is a pos(cid:2) sibility of stable operation by using the atmospheric air as a feed gas. The barrierless ozone generators have a modular construc(cid:2) tion that is an assurance of serviceability and allows to vary the ozone productivity in wide range 4 – 50 g O3 per hour. The parameters of the ozone module are the following: • Ozone production feed gas is an atmospheric air – 4 g/h. – 4g/mі – atmospheric air – 1 mі/h – 350 watt – 220±20 Volt – air • Ozone concentration • Feed gas • Feed gas flow rate • Power consumption • Supply voltage • Cooling • Ozone production on dry air/oxygen Fig. 1. Ozone generators with barrierless elec(cid:2) trode system. Areas ooff Application The most perspective market segments for a new barrierless ozonizers are connected with water treatment, namely the potable water preparation, preparation of water in pools and spa, sewage treatment, disinfection by ozonized water of packing materials, vegetables and fruit. The barrierless ozone generators can be applied in agriculture for presowing seed treatment what allow to increase the crop yield on 10(cid:2)15%. The perspective areas for ozone application are a technology of grain refreshment, deodorization and dis(cid:2) infecting of air in refrigerator systems and air(cid:2)conditioning sys(cid:2) tems, disinfection of operating(cid:2)rooms and other medical premises and equipment. – 8/12 g/h Stage ooff Development Innovative aspect and main advantages The main innovation of the developed technology is the use of the barrierless electrode system for plasma chemical reactor and special current conductive coating for the anode surface. The coating is not destroyed under impact of plasma and aggressive radicals which are synthesized when the reactor is operated on atmospheric air. It provides the stable long(cid:2)term operation of ozone generator. Thus the barrierless ozone technology has the following advantages in comparison with barrier ozonizers which are commonly used for the ozone generation: • reliability of operation at presence of nitrogen and water vapour, operation on atmospheric air; • reducing of expenses for air preparation ; • the use of high(cid:2)efficient high(cid:2)voltage power supply with the efficiency no less than 90%; • low gasdynamic resistance of plasmachemical reactor; • the elimination of dielectric barrier from discharge gap; • the electrode system has a firmness to the random electri(cid:2) cal breakdown; • the simplified construction of plasma chemical reactor, the weak accuracy requirement on manufacturing of reactor com(cid:2) ponents. The development works for barrierless ozone generator have been fulfilled completely. The samples of ozone generators are available for demonstration, ozone generators have been installed at the potable water preparation systems and at the water purification systems of the pools for 5 years. At the pres(cid:2) ent time, the preproduction batch of the barrierless ozone generators are realized at Ukrainian market. The barrierless ozone generators have been protected by the patents of Ukraine and USA. Contact details Dr. Golota Vladimir Ivanovich National Science Centre “Kharkov Institute of Physics and Technology” Akademicheskaya, 1, Kharkov 61108, Ukraine. Tel: +38 057 335 39 26 Fax: +38 057 335 39 26 E(cid:2)mail: golota@kipt.kharkov.ua Web site: www.kipt.kharkov.ua INNOVATIVETECHNOLOGY OPPORTUNITIES FROM THE STCU 35