滑动弧促进甲烷干重整电弧图像及电参数分析

Analysis of the Images and Electrical Parameters of Rotating Gliding Arc for the Dry Reforming of Methane

为充实旋转滑动弧促进甲烷干重整技术的相关研究,利用高速摄影和示波器,研究了磁场和气流协同驱动的滑动弧的物理特性。通过电弧图像和电参数图像,分析滑动弧CO2放电随磁场有无、流量变化的关系,并对总体积流量6 L/min下,甲烷干重整随CH4/CO2比例变化时滑动弧的物理特性进行了分析。研究表明:磁驱动可以提高滑动弧旋转速度,增大等离子体区域和非平衡态程度;总进气体积流量6 L/min,甲烷体积分数为30%时,干重整反应剧烈,电弧弧长周期性变化,电弧与电极有多触点现象,且会发生触点漂移。

To further study the dry reforming of methane using rotating gliding are, we used oscilloscope and high-speed camera to investigate the physical characteristics of rotating gliding arcs co-driven by magnetic field and tangential flow. The effects of magnetic field and gas flow on the reforming of CO2, as well as the effect of CH4/CO2 ratio on dry reform- ing of methane at a total flow rate of 6 L/min, were studied. It is found that the magnetic field can accelerate the arc rotation, enlarge the plasma region, and raise the degree of non-equilibrium state. When the total flow rate is 6 L/min with CI-I4 concentration of 30%, the dry reforming of methane is violent, the length of arc changes periodically, and there are multi-contact phenomenon and contact drift.