高频平板型介质阻挡放电臭氧产生的试验研究

Experimental Study on Ozone Generation Using High-frequency Parallel Plates Dielectric Barrier Discharge

电源频率的适当增大能提高臭氧发生效率。针对目前臭氧发生器电源频率偏低的情况,采用合适的高频高压电源和放电室结构,进行了试验和模拟研究。试验研究了峰值电压、气隙间距对臭氧产生的影响。试验结果表明:气隙间距为1、2、3mm时,电晕起始电压分别约为4.1、6.5和8.04kV;气隙间距为1mm时,臭氧体积分数和臭氧产率最高分别为24.55×10-3和134g/(kW.h)。然后首次模拟并分析了臭氧发生器内的电场强度,气隙间距为1、2、3mm时,气隙中心区域的电场强度分别为280.545、261.672和227.311kV/m。电源频率为7.47kHz能有效地提高气隙中心区域的电场强度,进而提高所产生的臭氧体积分数和臭氧产率,降低了成本。

The proper increase of power frequency can increase ozone production efficiency. For the power frequency of ozonizer is on the lower side at present, experiment and simulation were conducted using proper high-frequency high-voltage power and discharge chamber. Experiments were carried out to study the effects of peak voltage and gas width on the volume fraction of ozone generated. The results show that the corona inception voltage are 4100 V, 6500 V and 8040 V when the gas width are 1 mm, 2 mm and 3 mm, respectively. The highest volume fraction and produce efficiency of ozone are 24.55 × 10 3 and 134 g/（kW .h） with a gas width of 1 mm. Then the electric field intensity of ozone generation was simulated and analyzed for the first time. When the gas width are 1 mm, 2 mm and 3ram, the electric field intensity of discharge central zone are 280. 545, 261. 672 and 227. 311 kV/m, respectively.The power supply with frequency of 7.47 kHz can effectively enhance electric field intensity of discharge central zone, then increase volume fraction and produce efficiency of ozone and reduces the system cost.