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Conversion of carbon dioxide in microwave plasma torch sustained by gyrotron radiation at frequency of 24 GHz at atmospheric pressure
Journal of CO2 Utilization ( IF 7.7 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.jcou.2020.101197
Dmitry Mansfeld , Sergey Sintsov , Nikita Chekmarev , Alexander Vodopyanov

The first experimental results of using focused continuous microwave radiation of the gyrotron at a frequency of 24 GHz and power up to 5 kW for carbon dioxide decomposition are presented. The experiments were performed in pure CO2 and CO2/Ar mixture at atmospheric pressure. The highest conversion of 31.3% was observed at the CO2/Ar ratio of 1:5 at the optimum total gas flow rate of 30 LPM, while the energy efficiency was about 9.5% at SEI of 4.7 eV/molecule. The optical spectroscopy measurements confirmed that non-equilibrium plasma of microwave discharge with electron temperature not less than 4000−8000 K (0.3−0.7 eV) and gas temperature at the level of 2000−3500 K, is well suited for the effective decomposition of carbon dioxide.



中文翻译:

回旋辐射在大气压下频率为24 GHz的微波等离子体炬中二氧化碳的转化

给出了使用回旋加速器的聚焦连续微波辐射以24 GHz的频率和最高5 kW的功率分解二氧化碳的第一个实验结果。实验是在大气压下在纯CO 2和CO 2 / Ar混合物中进行的。在30 LPM的最佳总气体流速下,当CO 2 / Ar比为1:5时,观察到最高的31.3%的转化率,而在4.7 eV /分子的SEI下,能量效率约为9.5%。光谱学测量证实,电子温度不低于4000-8000 K(0.3-0.7 eV)且气体温度为2000-3500 K的微波放电的非平衡等离子体非常适合有效分解碳二氧化碳。

更新日期:2020-06-01
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