Study on zero CO2 emission atmospheric pressure SOFC hybrid power system integrated with OTM

Authors

  • Liqiang Duan,

    Corresponding author
    1. School of Energy Power and Mechanical Engineering, National Thermal Power Engineering and Technology Research Center, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, China
    • Correspondence: Liqiang Duan, School of Energy Power and Mechanical Engineering, National Thermal Power Engineering and Technology Research Center, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, 102206, China.

      E-mail: dlq@ncepu.edu.cn

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  • Kexin Huang,

    1. School of Energy Power and Mechanical Engineering, National Thermal Power Engineering and Technology Research Center, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, China
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  • Yongping Yang,

    1. School of Energy Power and Mechanical Engineering, National Thermal Power Engineering and Technology Research Center, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, China
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  • Xinming Chen,

    1. School of Energy Power and Mechanical Engineering, National Thermal Power Engineering and Technology Research Center, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, China
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  • Xiaohui Song

    1. School of Energy Power and Mechanical Engineering, National Thermal Power Engineering and Technology Research Center, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, China
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SUMMARY

In order to further reduce the energy consumption of CO2 capture from the traditional SOFC hybrid power system, based on the principle of energy cascade utilization and system integration, a zero CO2 emission atmospheric pressure solid oxide fuel cell (SOFC) hybrid power system integrated with oxygen ion transport membrane (OTM) is proposed. The oxygen is produced by the OTM for the oxy-fuel combustion afterburner of SOFC. With the Aspen-plus software, the models of the overall SOFC hybrid power systems with or without CO2 capture are developed. The thermal performance of new system is investigated and compared with other systems. The effects of the fuel utilization factor of SOFC and the pressure ratio between two sides of OTM membrane on the overall system performance are analyzed and optimized. The research results show that the efficiency of the zero CO2 emission atmospheric pressure SOFC hybrid power system integrated with OTM is around 58.36%, only 2.48% lower than that of the system without CO2 capture (60.84%) but 0.96% higher than that of the zero CO2 emission atmospheric pressure SOFC hybrid system integrated with the cryogenic air separation unit. Copyright © 2014 John Wiley & Sons, Ltd.

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