The Research On The Power Diagnosetic Of Ozone Producer Discharge And Dissociation Of Residual Ozone Gas

In recent years, with the development of the research on the application of generating high concentration ozone by means of DBD, people concern more about the efficiency of the discharge device and the decomposition of residual ozone. Following " Study on the method and application of gas ionization with strong electric field under high pressure", which is the key project invested by National Natural Science Foundation, and " the exploration of high efficiency and concentration GGD type ozone generator ", the international cooperation project of Liao Ning province, this thesis is about the experiential research on the two technical problems concerned with diagnosing the discharge power of the ozone generator and decomposing residual ozone, in accordance with the difficulty in the diagnosis of the power, as well as the demand for efficient residual ozone decomposition device from high concentration ozone water generation device.Discharge power of ozone generation device is an important parameter reflecting its efficiency. In scientific research and engineering application, it needs an accurate and convenient method to measure the power dissipation of the discharge device in order to have accurate evaluation on the efficiency of ozone generator. However, there are problems with the traditional methods such as power meter, voltage measurement of high pressure and side-current, Q-V Lissajous figure trace method. It is difficult for the traditional methods to reflect the power of the discharge device, because they can not be very accurate, convenient and practical in measuring the discharge power. Based on the analysis and experiments on the equivalent circuit of DBD device and the traditional methods, the following result has been reached: the effect of discharge air gap capacitance can be eliminated effectively if we adopt high voltage electric bridge which is derived from the improvement of the Q-V trace method. Thus, in the oscillograph, we can get a parallelogram, whose area is the power dissipation in a circle. This is a convenient method for measurement and calculation. Therefore, high voltage bridge method is a more accurate, convenient and practical method to measure the power of ozone generator.Residual ozone disassociation is another problem that affects the application of ozone technology. Accompanying the good application effect of the ozone generation technique, the problem becomes more important. This thesis describes the experiment in which different methods are used to disassociate ozone whose concentration is 10g/m3 and flux is 0.15m3/h. The result shows that the disassociation effect is better when combing molecularIIsieve absorption and heating than when using absorption or heating alone. The ozone disassociation rate can be as high as 99.99% when the temperature is 200C, which is 120C lower than the condition that only heating is adopted. The concentration of ozone after being decomposed is lower than 0.16mg/m3, the concentration limit set by national standard. In addition, compared with the traditional method, ozone decomposition device is smaller in volume and more convenient in operation and maintenance, so it suits the trend for high concentration and miniaturization of ozone equipment.