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Optimization of Operating Conditions for CO 2 Methanation Process Using Design of Experiments

Author

Listed:
  • Chae-Eun Yeo

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Minhye Seo

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Dongju Kim

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

  • Cheonwoo Jeong

    (Research Institute of Industrial Science and Technology (RIST), 187-12 Geumho-ro, Gwangyang-si 57801, Korea)

  • Hye-Sun Shin

    (Research Institute of Industrial Science and Technology (RIST), 187-12 Geumho-ro, Gwangyang-si 57801, Korea)

  • Suhyun Kim

    (Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea)

Abstract

In this study, the Taguchi experimental design method using an L16 orthogonal array was attempted in order to investigate the optimal operating conditions for the CO 2 methanation process in Ni-based catalysts. The relative influence of the main factors affecting CO 2 conversion and CH 4 yield was ranked as follows: reactor pressure > space velocity > reaction temperature. The optimal combination of operating conditions was a reactor temperature of 315 °C, a pressure of 19 bar, and a space velocity of 6000 h −1 . The effect of the H 2 /CO 2 ratio on CO 2 conversion and CH 4 yield was further considered under these optimal operating conditions. Moreover, the catalyst was characterized in order to investigate the production of coke through Brunauer–Emmett–Teller analysis, thermogravimetric analysis, and scanning electron microscopy. The amount of coke produced after the reaction for approximately 24 h was ~2 wt.%. Therefore, the desired CH 4 yield and long-term operational stability were successfully obtained using the Taguchi design method and catalyst characterization.

Suggested Citation

  • Chae-Eun Yeo & Minhye Seo & Dongju Kim & Cheonwoo Jeong & Hye-Sun Shin & Suhyun Kim, 2021. "Optimization of Operating Conditions for CO 2 Methanation Process Using Design of Experiments," Energies, MDPI, vol. 14(24), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:24:p:8414-:d:701624
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    References listed on IDEAS

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    1. Meylan, Frédéric D. & Moreau, Vincent & Erkman, Suren, 2016. "Material constraints related to storage of future European renewable electricity surpluses with CO2 methanation," Energy Policy, Elsevier, vol. 94(C), pages 366-376.
    2. Blanco, Herib & Faaij, André, 2018. "A review at the role of storage in energy systems with a focus on Power to Gas and long-term storage," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 1049-1086.
    3. Götz, Manuel & Lefebvre, Jonathan & Mörs, Friedemann & McDaniel Koch, Amy & Graf, Frank & Bajohr, Siegfried & Reimert, Rainer & Kolb, Thomas, 2016. "Renewable Power-to-Gas: A technological and economic review," Renewable Energy, Elsevier, vol. 85(C), pages 1371-1390.
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    Cited by:

    1. Marco Milanese & Gianpiero Colangelo & Arturo de Risi, 2023. "Progress in CO 2 Conversion Using Renewable Energy Sources," Energies, MDPI, vol. 16(5), pages 1-3, February.

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