Conversion of Methane to C<sub>2</sub> Hydrocarbons and Hydrogen Using a Gliding Arc Reactor

HU Shuanghui (胡爽慧); WANG Baowei (王保伟); LV Yijun (吕一军); YAN Wenjuan (闫文娟)

doi:10.1088/1009-0630/15/6/13

Plasma Science and Technology > 2013 > 15(6): 555-561. > DOI: 10.1088/1009-0630/15/6/13

HU Shuanghui (胡爽慧), WANG Baowei (王保伟), LV Yijun (吕一军), YAN Wenjuan (闫文娟). Conversion of Methane to C₂ Hydrocarbons and Hydrogen Using a Gliding Arc Reactor[J]. Plasma Science and Technology, 2013, 15(6): 555-561. DOI: 10.1088/1009-0630/15/6/13

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Conversion of Methane to C₂ Hydrocarbons and Hydrogen Using a Gliding Arc Reactor

Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Funds: supported by National Natural Science Foundation of China (Nos. 21176175, 20606023)

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Received Date: October 24, 2011

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Abstract

Abstract

Methane conversion has been studied using gliding arc plasma in the presence of argon. The process was conducted at atmospheric pressure and ambient temperature. The focus of this research was to develop a process of converting methane to C₂ hydrocarbons and hydrogen. The main parameters, including the CH₄/Ar mole ratio, the CH₄ flow rate, the input voltage, and the minimum electrode gap, were varied to investigate their e®ects on methane conversion rate, product distribution, energy consumption, carbon deposit, and reaction stability. The specific energy requirement (SER) was used to express the energy utilization efficiency of the process and provided a practical guidance for optimizing reaction conditions for improving energy efficiency. It was found that the carbon deposition was not conducive to methane conversion, and the gliding arc plasma discharge reached a stable state twelve minutes later. Optimum conditions for methane conversion were suggested. The maximum methane conversion rate of 43.39% was obtained under the optimum conditions. Also, C₂ hydrocarbons selectivity, C₂ hydrocarbons yield, H₂ selectivity, H₂ yield and SER were 87.20%, 37.83%, 81.28%, 35.27%, and 2.09 MJ/mol, respectively.
- methane,
- C₂ hydrocarbons,
- hydrogen,
- gliding arc,
- plasma

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