Studies on ozone-zero phenomena in ozone generator and on its reliability progress

[我。针-板电极系统]：针-板电极系统用于臭氧零现象的观测。在施加电压约为4.5 kV、放电电流约为1 μA的氧气放电控制下，实验条件的准备工作历时两个半月以上。在初始阶段，臭氧生成特征与常规特征大致相同，在臭氧零现象出现之前，该特征逐渐不稳定。经过这些过程，在氧气中建立了相对稳定的臭氧零现象。臭氧零现象出现后，证实了氮气对臭氧生成的添加作用[2]。[内旋转电极的同轴圆柱形反应器]：长时间运行对于工业臭氧生产是非常重要的。臭氧浓度随时间逐渐降低。我们的实验目的之一是研究是什么参数（或反应）决定了这种现象以及如何控制它。在本实验中，每天持续放电8小时，该操作重复约两个月。在使用新电极的实验中，臭氧浓度保持在同一水平附近。在相同的电极表面状态下观察几天后，由于金属表面状态的一些变化，臭氧浓度急剧下降。臭氧浓度在7 ~ 0g/m3之间波动。这些情况持续了几天，臭氧的产生就停止了。臭氧零浓度保持约1小时后，加入10%氮气5分钟。在加入氮气几秒钟后，臭氧浓度又恢复了。在电极旋转过程中，放电区域变得更加均匀。在相同的输入功率下，观察到不同的臭氧产生方式。这似乎是由于金属表面的吸附层发生了变化。臭氧浓度似乎对金属表面状态有影响，并且随着电极表面氮密度的降低而不稳定。氮素消耗量随着转速的增加而增加，在600转/分时，氮素消耗量比不旋转时增加了约两倍。[III。膨胀网状金属电极式臭氧发生器（此处未观察到臭氧零现象）：我们研究了将膨胀金属电极夹在双电极之间的方法，该方法可以在不受供电电压波动的情况下持续放电，从而提高臭氧发生器的效率。少

[I. Needle-to-plate electrode system] : The needle-to-plate electrode system was used for the observation of the ozone-zero phenomena. Under the control of discharge in oxygen with the applied voltage of about 4.5 kV and the discharge current of about 1 μA, it took more than two and half months to prepare the condition for the experiments. At the first stage the ozone generation characteristics were generally the same of the conventional characteristics and gradually the characteristics were unstable before the appearance of the ozone-zero phenomena. After through these processes, relatively stable ozone-zero phenomena established in oxygen gas. After the appearance of ozone-zero phenomena, the addition effect of nitrogen gas on the ozone generation was confirmed.[II. Coaxial cylindrical type reactor with an inner rotating electrode] : Long time operation is very important for the industrial ozone production. The ozone concentration gradually decreased with time. One of the purposes of … More our experiments is to study what parameters (or reactions) decide this phenomena and how to control it. In this experiment, discharge was continued for eight hours each day and this operation was repeated about wo months. The ozone concentration was kept near the same level during experiments with a new electrode. The same surface condition of electrode was observed for few days and after that, the ozone concentration decreased dramatically due to some change of metal surface condition. The fluctuation of the ozone concentration between 7-0g/m3 was observed. These situations were observed few days and the ozone production stopped. After the zero ozone concentration was kept for about one hour, 10% nitrogen gas was added for 5 minutes. A few seconds after addition of nitrogen, the ozone concentration recovered again.During rotation of electrode, the discharge area became more uniformly. Different ozone production mode was observed with same input power. It seemed due to the change of the adsorbed layer of the metal surface. The ozone concentration seemed to be influenced on the metal surface condition and didn't stabilize during decreasing nitrogen density on the electrode surface. Nitrogen consumption increased with increasing of rotation speed and it looked about two times more at 600 rpm compared with no rotation. [III. Expanded mesh metal electrode type ozone generator (no ozone-zero phenomena observed here)] : We examined the method using an expanded metal electrode which was sandwiched between the di-electrodes sustained the electric discharge regardless of the fluctuation of supplied voltage and made the ozone generator more efficient. Less