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Effect of Nitrogen/Oxygen Substances on the Pyrolysis of Alkane-Rich Gases to Acetylene by Thermal Plasma

Author

Listed:
  • Wei Huang

    (Key Laboratory of Biomass Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China)

  • Junkui Jin

    (Key Laboratory of Biomass Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China)

  • Guangdong Wen

    (Key Laboratory of Biomass Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China)

  • Qiwei Yang

    (Key Laboratory of Biomass Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China)

  • Baogen Su

    (Key Laboratory of Biomass Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China)

  • Qilong Ren

    (Key Laboratory of Biomass Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract

It is important to convert alkane-rich gases, such as coke oven gas, to value-added chemicals rather than direct emission or combustion. Abundant nitrogen/oxygen substances are present in the actual alkane-rich gases. However, the research about how they influence the conversion in the pyrolysis process is missing. In this work, a systematic investigation on the effect of various nitrogen/oxygen-containing substances, including N 2 , CO, and CO 2 ,on the pyrolysis of CH 4 to C 2 H 2 was performed by a self-made 50 kW rotating arc thermal plasma reactor, and the pyrolysis of a simulated coke oven gas as a model of alkane-rich mixing gas was conducted as well. It was found that the presence of N 2 and CO 2 was not conducive to the main reaction of alkane pyrolysis for C 2 H 2 , while CO, as a stable equilibrium product, had little effect on the cracking reaction. Consequently, it is suggested that a pretreatment process of removing N 2 and CO 2 should be present before pyrolysis. Both input power and feed rate had considerable effect on the pyrolysis of the simulated coke oven gas, and a C 2 H 2 selectivity of 91.2% and a yield of 68.3% could be obtained at an input power of 17.9 kW.

Suggested Citation

  • Wei Huang & Junkui Jin & Guangdong Wen & Qiwei Yang & Baogen Su & Qilong Ren, 2018. "Effect of Nitrogen/Oxygen Substances on the Pyrolysis of Alkane-Rich Gases to Acetylene by Thermal Plasma," Energies, MDPI, vol. 11(2), pages 1-14, February.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:2:p:351-:d:130028
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    References listed on IDEAS

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    1. Jie Ma & Ming Zhang & Jianhua Wu & Qiwei Yang & Guangdong Wen & Baogen Su & Qilong Ren, 2017. "Hydropyrolysis of n- Hexane and Toluene to Acetylene in Rotating-Arc Plasma," Energies, MDPI, vol. 10(7), pages 1-12, July.
    2. Ming Zhang & Jie Ma & Baogen Su & Guangdong Wen & Qiwei Yang & Qilong Ren, 2017. "Pyrolysis of Polyolefins Using Rotating Arc Plasma Technology for Production of Acetylene," Energies, MDPI, vol. 10(4), pages 1-13, April.
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    Cited by:

    1. Evgeniy Yurevich Titov & Ivan Vasilevich Bodrikov & Anton Igorevich Serov & Yuriy Alekseevich Kurskii & Dmitry Yurievich Titov & Evgenia Ruslanovna Bodrikova, 2022. "Liquid-Phase Non-Thermal Plasma Discharge for Fuel Oil Processing," Energies, MDPI, vol. 15(9), pages 1-9, May.
    2. Evgeniy Yurevich Titov & Ivan Vasilevich Bodrikov & Alexander Leonidovich Vasiliev & Yuriy Alekseevich Kurskii & Anna Gennadievna Ivanova & Andrey Leonidovich Golovin & Dmitry Alekseevich Shirokov & D, 2023. "Non-Thermal Plasma Pyrolysis of Fuel Oil in the Liquid Phase," Energies, MDPI, vol. 16(10), pages 1-20, May.

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