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The role of external heat exchangers in oxy-fuel circulating fluidized bed

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  • Bolea, Irene
  • Romeo, Luis M.
  • Pallarés, David

Abstract

Recently, oxy-fuel combustion has received increasing attention as one of the short-term solutions for capturing CO2 from power plants. Despite their quick development, there are several issues that need further research. Combustion characteristics, heat transfer, emissions levels, optimum oxygen concentration and flue gas recycle are the main concern of the literature. All these issues may introduce several changes in power plant and boiler configuration that causes uncertainty in the final design of future installations. In this respect, oxy-fuel combustion in fluidized bed seems to present advantages in terms of flexibility, operational adaptability and simplicity of design modifications respect to air combustion. These issues have been though scarcely analysed in open literature.

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  • Bolea, Irene & Romeo, Luis M. & Pallarés, David, 2012. "The role of external heat exchangers in oxy-fuel circulating fluidized bed," Applied Energy, Elsevier, vol. 94(C), pages 215-223.
    • Handle: RePEc:eee:appene:v:94:y:2012:i:c:p:215-223
    DOI: 10.1016/j.apenergy.2012.01.050
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    3. Duan, Lunbo & Jiang, Zhongxiao & Chen, Xiaoping & Zhao, Changsui, 2013. "Investigation on water vapor effect on direct sulfation during wet-recycle oxy-coal combustion," Applied Energy, Elsevier, vol. 108(C), pages 121-127.
    4. Xu, Mingxin & Li, Shiyuan & Wu, Yinghai & Jia, Lufei, 2017. "Reduction of recycled NO over char during oxy-fuel fluidized bed combustion: Effects of operating parameters," Applied Energy, Elsevier, vol. 199(C), pages 310-322.
    5. Chi, Chung-Cheng & Lin, Ta-Hui, 2013. "Oxy-oil combustion characteristics of an existing furnace," Applied Energy, Elsevier, vol. 102(C), pages 923-930.
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    7. Seddighi, Sadegh & Clough, Peter T. & Anthony, Edward J. & Hughes, Robin W. & Lu, Ping, 2018. "Scale-up challenges and opportunities for carbon capture by oxy-fuel circulating fluidized beds," Applied Energy, Elsevier, vol. 232(C), pages 527-542.
    8. Xu, Mingxin & Li, Shiyuan & Wu, Yinghai & Jia, Lufei & Lu, Qinggang, 2017. "The characteristics of recycled NO reduction over char during oxy-fuel fluidized bed combustion," Applied Energy, Elsevier, vol. 190(C), pages 553-562.
    9. Li, Shiyuan & Li, Haoyu & Li, Wei & Xu, Mingxin & Eddings, Eric G. & Ren, Qiangqiang & Lu, Qinggang, 2017. "Coal combustion emission and ash formation characteristics at high oxygen concentration in a 1MWth pilot-scale oxy-fuel circulating fluidized bed," Applied Energy, Elsevier, vol. 197(C), pages 203-211.
    10. Singh, Ravi Inder & Kumar, Rajesh, 2016. "Current status and experimental investigation of oxy-fired fluidized bed," Renewable and Sustainable Energy Reviews, Elsevier, vol. 61(C), pages 398-420.
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    12. Arias, B. & Criado, Y.A. & Sanchez-Biezma, A. & Abanades, J.C., 2014. "Oxy-fired fluidized bed combustors with a flexible power output using circulating solids for thermal energy storage," Applied Energy, Elsevier, vol. 132(C), pages 127-136.
    13. Li, Dongfang & Cai, Runxia & Zhang, Man & Yang, Hairui & Choi, Kyeong & Ahn, Seokgi & Jeon, Chung-Hwan, 2020. "Operation characteristics of a bubbling fluidized bed heat exchanger with internal solid circulation for a 550-MWe ultra-supercritical CFB boiler," Energy, Elsevier, vol. 192(C).
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