Investigation of methane steam reforming in planar porous support of solid oxide fuel cell |
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| Authors: | Yongping Yang Xiaoze Du Lijun Yang Yuan Huang Haizhen Xian |
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| Affiliation: | 1. Beijing Key Laboratory of Safe and Clean Energy Technology, North China Electric Power University, Beijing 102206, China;2. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China;1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;2. Department of Engineering Mechanics and Soft Matter Research Center, Zhejiang University, Hangzhou 310027, China;3. Department of Physics and Materials Science and Centre for Functional Photonics (CFP), City University of Hong Kong, Hong Kong SAR, China;4. Computational Biology Center, IBM Thomas J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, NY 10598, USA;1. School of Physics, Harbin Institute of Technology, 92, West Dazhi Street, Harbin, 150001, PR China;2. School of New Energy, Harbin Institute of Technology at Weihai, 2, West Wenhua Road, Weihai, 264209, PR China;3. School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin, 150001, PR China;1. Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USA;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;3. School of Chemical & Environment Engineering, China University of Mining & Technology, Beijing 100083, PR China;4. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA;5. Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;1. School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Republic of Korea;2. Air Conditioning and Energy Solution R&D Group, LG Electronics Inc., Seoul 153-802, Republic of Korea;3. Department of Mechanical Engineering, Myongji University, Yongin 449-728, Republic of Korea;4. School of Mechanical and Automotive Engineering, Daegu University, Gyungsan 712-714, Republic of Korea |
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| Abstract: | Adopting the porous support in integrated-planar solid oxide fuel cell (IP-SOFC) can reduce the operating temperature by reducing thickness of electrolyte layer, and also, provide internal reforming environment for hydrogen-rich fuel gas. The distributions of reactant and product components, and temperature of methane steam reforming for IP-SOFC were investigated by the developed physical and mathematical model with thermodynamic analysis, in which eleven possible reaction mechanisms were considered by the source terms and Arrhenius relationship. Numerical simulation of the model revealed that the progress of reforming reaction and the distribution of the product, H2, were influenced by the operating conditions, included that of temperature, ratio of H2O and CH4, as well as by the porosity of the supporting material. The simulating results indicate that the methane conversion rate can reach its maximum value under the operating temperature of 800 °C and porosity of ε = 0.4, which rather approximate to the practical operating conditions of IP-SOFC. In addition, characteristics of carbon deposition on surface of catalyst were discussed under various operating conditions and configuration parameters of the porous support. The present works provided some theoretical explanations to the numerous experimental observations and engineered practices. |
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