Chemical processes in the discharge chamber of an ozone generator

Abstract

The aim of this work was to study the effect of chemical reactions occurring in the discharge chamber of an ozone generator on the concentration of oxygen and ozone when working with medical oxygen as a working gas. This will allow to adjust the parameters of the electrical energy that the discharge chamber feeds for more efficient ozone generation. The article deals with the chemical processes that occur in the discharge gap of the discharge chamber of an ozone generator during synthesis. The main chemical reactions that are responsible for the decay of molecular oxygen under the influence of a discharge, ozone synthesis and its decay are presented. Literature analysis of the sources showed that there are a large number of such chemical reactions, the main are three reactions. The given rate constants of these reactions. The effect of temperature on the concentration of ozone in the ozone-oxygen mixture is justified. It was shown that with increasing temperature, the speed of the reaction group, which is responsible for the synthesis of molecular oxygen from atomic oxygen, significantly increases, and vice versa, the rate of reactions that are responsible for the synthesis of ozone decreases. A study was made of the influence of the course of chemical reactions on the parameters of electric energy supplying the discharge chamber during operation of the ozone generator. It is proved that the operating frequency of the AC voltage should not exceed the value of 20 kHz, as this will reduce the ozone concentration obtained. The study of gas parameters in the discharge interval was determined by applying the method of representative elementary volume, which allowed to break the discharge gap into volumes that are quasi-stationary in concentration. The processes occurring between these elemental volumes during ozone synthesis are described, as well as the processes of diffusion and the diffusion rate between two tangent elementary volumes with different ozone concentrations are determined.