Research on optimal control of low power thermal plasma field for waste gas treatment

Abstract

Abstract The innocuous treatment of solid waste, waste gas and other pollutants has become a major environmental protection problem that needs to be solved urgently in China’s green development. Aiming at the problems of low efficiency and secondary pollution of traditional waste gas treatment methods, the use of high temperature generated by thermal plasma and active particles to quickly decompose and destroy pollutants and eventually form stable harmless substances has proven to be an effective way. This article studies a method that can stably generate thermal plasma in a low-voltage. By adding an auxiliary high-voltage electrode to the front end of a hot plasma sliding arc, it helps the thermal plasma device to more easily penetrate the air for arcing. By using a flow meter and a fan to change the flow field of channel. The arcing conditions of the device under different flow fields was investigated. And by studying the influence of input power and air flow velocity on the arc length and period of the arc, the contact situation between the thermal plasma arc and the gas is obtained. The experimental results show that a stable and appropriate flow field environment is the key to the efficient work of thermal plasma.