电极尺寸对介质阻挡放电冷等离子体去除NO的影响

设计了一套高压电源装置以及相应的同轴圆柱 筒介质阻挡放电管 ,研究了放电管中心电极直径以及介质层管内径变化对放电冷等离子体去除NO的影响。实验结果表明 ,这 2种电极尺寸的变化对NO去除率有显著的影响。中心电极直径的增加 ,有助于增强放电 ,但同时减小了反应空间 ;介质层管内径增加 ,延长停留时间的同时放电的强度却相应减弱了。所以中心电极的直径或介质层的内径均应有一最佳值 ,使得其他条件不变的情况下NO的去除效果最佳。

Influences of the dimensions of electrodes on NO removal with a dielectric barrier discharge non-thermal plasma

A set of high voltage power and coaxial cylinder_tube electrodes dielectric barrier discharge reactor are designed to study the influences of the diameter of the central electrode and the internal diameter of the dielectric barrier layer tube on the NO removal with the discharge non-thermal plasma. The experimental results indicate that the changes of the dimensions of coth electrodes will markedly influence the removal effect of NO. The increasing of the diameter of the central electrode will enhance the discharge and shorten the gas residence time at the same time, while the increasing of the internal diameter of the dielectric layer tube will weaken the discharge intensity and delay the gas residence time. Therefore, the influences of the above factors on NO removal effect are not monotone.