Experimental And Model Study Of Ozone Production Via DBDs Coupling With Catalyst

Ozone has been used widely because of its strong oxidation and no residual. However, the small output concentration and low field have restricted its use. Now a great interest is developing around the refinement of the ozonizer and the optimization of the apparatus parameters. This paper has preliminary studied and investigated the refinement of the ozonizer, the influencing factors, and the action mechanism of the catalyst by applying the catalyst in the gas space!In this paper, the active influence of the catalyst,γ-Al2O3,on the ozone production has been primarily investigated! On the base of good experiment result, after analyzing the ozone decomposition, we think catalyst can adsorb oxygen molecules on its surface, and then increase the rate constant of the reaction between the adsorbed oxygen and O; there by, it restricts the ozone decomposition and improve the ozone output concentration and the filed. This not only provide a new technology of producing ozone for its wide usage, but also give a direction about the refinement of the catalyst and looking for another catalyst!In the experiment, we have placed the sphericity grain of the catalyst in the inner space of the quartz glass for producing the ozone! According to our condition, we have investigated the following factors that influence the ozone synthesis: the gas space,the applied voltage and the frequency, the gas velocity and the temperature of the cooling water! In the experiment, we found that the small gas space and the low temperature are good to produce ozone, and to the gas velocity, the applied voltage and frequency, there is an optimum value experimentally. When the gas space is equal to 6mm, the maximum filed is 372g/kWh, and the output concentration also may reach 10000ppm.On the base of the experiment, we have built a numerical zero-dimensional kinetic model for analyzing the influence of the operating parameters , the gas velocity,the applied voltage and frequency, on the zone synthesis! Additionally, in the model, we considered the action of the catalyst, the rate constant of the reaction between oxygen molecules and oxygen atoms is defined as the fitting parameter! After adjusting the fitting parameter, the good agreement between the calculated results and the experiment dates was found!...