Yu Gang1,Yu Qi2,Ye Dan1,Gu Fan1,Xu Yiqian1
(1.Education Ministry Key Laboratory on Clean Coal Power Generation and Combustion Technology, Southeast University, Nanjing 210096, China;2.Department of Environmental and Chemical Engineering,Wuhan Institute of Science and Technology,Wuhan 430074,China)
Abstract: As a new type of NO removal system, NO reduction in N2-NO plasma one is applied to solve the difficulties in the traditional methods,such as higher energy-consumption,larger equipment size and more expensive cost,etc.Using the experimental NO removal system with single-electrode tip discharge structure,the NO reduction characteristics of N2-NO system were revealed to guide the engineering practice.The amount of active N atom and NO removal rate both increase at the beginning of the increasing distance between two tips and then drop while the distance exceeds to a certain value, the NO removal rate increases while the voltage between two electrodes or the resident time of gas flow increases. The distance is a key geometrical variable which can determine the electric field intensity between two electrodes and gas flow resident time.
Keywords: plasma; single-electrode tip discharge; voltage between two electrodes; distance between two tips