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Development of a coupled reactor with a catalytic combustor and steam reformer for a 5kW solid oxide fuel cell system

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  • Kang, Sanggyu
  • Lee, Kanghun
  • Yu, Sangseok
  • Lee, Sang Min
  • Ahn, Kook-Young

Abstract

The methane (CH4) conversion rate of a steam reformer can be increased by thermal integration with a catalytic combustor, called a coupled reactor. In the present study, a 5kW coupled reactor has been developed based on a 1kW coupled reactor in previous work. The geometric parameters of the space velocity, diameter and length of the coupled reactor selected from the 1kW coupled reactor are tuned and applied to the design of the 5kW coupled reactor. To confirm the scale-up strategy, the performance of 5kW coupled reactor is experimentally investigated with variations of operating parameters such as the fuel utilization in the solid oxide fuel cell (SOFC) stack, the inlet temperature of the catalytic combustor, the excess air ratio of the catalytic combustor, and the steam to carbon ratio (SCR) in the steam reformer. The temperature distributions of coupled reactors are measured along the gas flow direction. The gas composition at the steam reformer outlet is measured to find the CH4 conversion rate of the coupled reactor. The maximum value of the CH4 conversion rate is approximately 93.4%, which means the proposed scale-up strategy can be utilized to develop a large-scale coupled reactor.

Suggested Citation

  • Kang, Sanggyu & Lee, Kanghun & Yu, Sangseok & Lee, Sang Min & Ahn, Kook-Young, 2014. "Development of a coupled reactor with a catalytic combustor and steam reformer for a 5kW solid oxide fuel cell system," Applied Energy, Elsevier, vol. 114(C), pages 114-123.
    • Handle: RePEc:eee:appene:v:114:y:2014:i:c:p:114-123
    DOI: 10.1016/j.apenergy.2013.09.046
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    1. Rahimpour, M.R. & Dehnavi, M.R. & Allahgholipour, F. & Iranshahi, D. & Jokar, S.M., 2012. "Assessment and comparison of different catalytic coupling exothermic and endothermic reactions: A review," Applied Energy, Elsevier, vol. 99(C), pages 496-512.
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    3. Wee, Jung-Ho, 2011. "Molten carbonate fuel cell and gas turbine hybrid systems as distributed energy resources," Applied Energy, Elsevier, vol. 88(12), pages 4252-4263.
    4. Park, Sung Ku & Kim, Tong Seop & Sohn, Jeong L. & Lee, Young Duk, 2011. "An integrated power generation system combining solid oxide fuel cell and oxy-fuel combustion for high performance and CO2 capture," Applied Energy, Elsevier, vol. 88(4), pages 1187-1196, April.
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    2. Shi, Wangying & Zhu, Jianzhong & Han, Minfang & Sun, Zaihong & Guo, Yaming, 2019. "Operating limitation and degradation modeling of micro solid oxide fuel cell-combined heat and power system," Applied Energy, Elsevier, vol. 252(C), pages 1-1.
    3. Lee, Young Duk & Ahn, Kook Young & Morosuk, Tatiana & Tsatsaronis, George, 2015. "Environmental impact assessment of a solid-oxide fuel-cell-based combined-heat-and-power-generation system," Energy, Elsevier, vol. 79(C), pages 455-466.
    4. Jiang, Dongyue & Yang, Wenming & Tang, Aikun, 2016. "A refractory selective solar absorber for high performance thermochemical steam reforming," Applied Energy, Elsevier, vol. 170(C), pages 286-292.
    5. Ashraf, Muhammad Adeel & Rashid, Kashif & Rahimipetroudi, Iman & Kim, Hyeon Jin & Dong, Sang Keun, 2020. "Analyzing different planar biogas-fueled SOFC stack designs and their effects on the flow uniformity," Energy, Elsevier, vol. 190(C).
    6. Lee, Young Duk & Ahn, Kook Young & Morosuk, Tatiana & Tsatsaronis, George, 2018. "Exergetic and exergoeconomic evaluation of an SOFC-Engine hybrid power generation system," Energy, Elsevier, vol. 145(C), pages 810-822.
    7. Kim, Taebeen & Kang, Sanggyu, 2023. "Numerical analysis of a highly efficient cascade solid oxide fuel cell system with a fuel regenerator," Applied Energy, Elsevier, vol. 341(C).
    8. Sunku Prasad, J. & Muthukumar, P. & Desai, Fenil & Basu, Dipankar N. & Rahman, Muhammad M., 2019. "A critical review of high-temperature reversible thermochemical energy storage systems," Applied Energy, Elsevier, vol. 254(C).
    9. Rashid, Kashif & Dong, Sang Keun & Mehran, Muhammad Taqi & Lee, Dong Won, 2017. "Design and analysis of compact hotbox for solid oxide fuel cell based 1kW-class power generation system," Applied Energy, Elsevier, vol. 208(C), pages 620-636.
    10. Kang, Sanggyu & Ahn, Kook-Young, 2017. "Dynamic modeling of solid oxide fuel cell and engine hybrid system for distributed power generation," Applied Energy, Elsevier, vol. 195(C), pages 1086-1099.
    11. Koo, Taehyung & Kim, Young Sang & Lee, Dongkeun & Yu, Sangseok & Lee, Young Duk, 2021. "System simulation and exergetic analysis of solid oxide fuel cell power generation system with cascade configuration," Energy, Elsevier, vol. 214(C).
    12. Guo, Meiting & Ru, Xiao & Yang, Lin & Ni, Meng & Lin, Zijing, 2022. "Effects of methane steam reforming on the mechanical stability of solid oxide fuel cell stack," Applied Energy, Elsevier, vol. 322(C).

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