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CO2 capture using MEA (monoethanolamine) aqueous solution in coal-fired power plants: Modeling and optimization of the absorbing columns

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  • Chu, Fengming
  • Yang, Lijun
  • Du, Xiaoze
  • Yang, Yongping

Abstract

The CO2 capture based on the MEA (monoethanolamine) absorption has been proved to be a practical and alternative method for the post-combustion CO2 capture. It is of benefit to the energy conservation of CO2 capture system to clarify the impacts of the absorbing column parameters on the system performance. Based on the representative elementary volume method and pseudo-single-liquid model, the computational model of CO2 absorption into the MEA solution in the absorbing column was developed, in which the gas phase flow was taken into account. The modeling and computational methods were validated by the comparison between the experimental data and numerical results. An industrial-scale absorption column was investigated, and the influences of the height, operating pressure and the packing materials of the absorbing columns on the mass transfer performance and energy consumption were obtained. The results show that the optimal operating pressure is the atmospheric pressure and the optimal height of the absorbing columns is about 8 m in this work. For the minimum energy consumption, the surface area per unit volume and the porosity of the packing materials should be as big as possible.

Suggested Citation

  • Chu, Fengming & Yang, Lijun & Du, Xiaoze & Yang, Yongping, 2016. "CO2 capture using MEA (monoethanolamine) aqueous solution in coal-fired power plants: Modeling and optimization of the absorbing columns," Energy, Elsevier, vol. 109(C), pages 495-505.
    • Handle: RePEc:eee:energy:v:109:y:2016:i:c:p:495-505
    DOI: 10.1016/j.energy.2016.04.123
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    Cited by:

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    6. Fu, Yue & Wang, Liyuan & Liu, Ming & Wang, Jinshi & Yan, Junjie, 2023. "Performance analysis of coal-fired power plants integrated with carbon capture system under load-cycling operation conditions," Energy, Elsevier, vol. 276(C).
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    8. Yifang Liu & Fengming Chu & Lijun Yang & Xiaoze Du & Yongping Yang, 2018. "CO2 absorption characteristics in a random packed column with various geometric structures and working conditions," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 8(1), pages 120-132, February.
    9. Yan, Shuren & Zhu, Ding & Zhang, Zhiyong & Li, Hai & Chen, Guangjin & Liu, Bei, 2019. "A pilot-scale experimental study on CO2 capture using Zeolitic imidazolate framework-8 slurry under normal pressure," Applied Energy, Elsevier, vol. 248(C), pages 104-114.
    10. Zhou, Xiaobin & Liu, Chao & Fan, Yinming & Zhang, Lihao & Tang, Shen & Mo, Shengpeng & Zhu, Yinian & Zhu, Zongqiang, 2022. "Energy-efficient carbon dioxide capture using a novel low-viscous secondary amine-based nonaqueous biphasic solvent: Performance, mechanism, and thermodynamics," Energy, Elsevier, vol. 255(C).
    11. Chu, Fengming & Liu, Yifang & Yang, Lijun & Du, Xiaoze & Yang, Yongping, 2017. "Ammonia escape mass transfer and heat transfer characteristics of CO2 absorption in packed absorbing column," Applied Energy, Elsevier, vol. 205(C), pages 1596-1604.
    12. Yaumi, A.L. & Bakar, M.Z. Abu & Hameed, B.H., 2017. "Recent advances in functionalized composite solid materials for carbon dioxide capture," Energy, Elsevier, vol. 124(C), pages 461-480.
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