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Maximizing coal-fired power plant efficiency with integration of amine-based CO2 capture in greenfield and retrofit scenarios

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  • Van Wagener, David H.
  • Liebenthal, Ulrich
  • Plaza, Jorge M.
  • Kather, Alfons
  • Rochelle, Gary T.

Abstract

A modeling study was performed to investigate the direct impact of amine CO2 scrubbing on the efficiency of a coal-fired power plant. The full scope of the capture process was simulated with 8 m PZ (piperazine) to estimate the steam, electricity, and cooling water requirements. The steam cycle was simulated for applications of the capture technology to both retrofit and greenfield (optimized new build) coal-fired power plants. The reboiler duty of the stripping column had an optimal molar L/G (liquid to gas ratio) of 4.9 in the absorber and the maximum reboiler temperature of 150 °C. Integration of this CO2 capture with a greenfield coal plant yielded an identical optimal L/G, but the optimal reboiler temperature was 140 °C, and the decrease in power plant efficiency was 7.3%. The retrofit case resulted in an optimum case with an L/G of 5.9, a reboiler temperature of 120 °C, and a decrease in plant efficiency of 7.0%. When running at the optimal L/G, the optimization sensitivity to the reboiler temperature was low.

Suggested Citation

  • Van Wagener, David H. & Liebenthal, Ulrich & Plaza, Jorge M. & Kather, Alfons & Rochelle, Gary T., 2014. "Maximizing coal-fired power plant efficiency with integration of amine-based CO2 capture in greenfield and retrofit scenarios," Energy, Elsevier, vol. 72(C), pages 824-831.
    • Handle: RePEc:eee:energy:v:72:y:2014:i:c:p:824-831
    DOI: 10.1016/j.energy.2014.04.117
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    References listed on IDEAS

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    1. Süle, Zoltán & Baumgartner, János & Dörgő, Gyula & Abonyi, János, 2019. "P-graph-based multi-objective risk analysis and redundancy allocation in safety-critical energy systems," Energy, Elsevier, vol. 179(C), pages 989-1003.
    2. Hanak, Dawid P. & Manovic, Vasilije, 2016. "Calcium looping with supercritical CO2 cycle for decarbonisation of coal-fired power plant," Energy, Elsevier, vol. 102(C), pages 343-353.
    3. Hanak, Dawid P. & Kolios, Athanasios J. & Manovic, Vasilije, 2016. "Comparison of probabilistic performance of calcium looping and chemical solvent scrubbing retrofits for CO2 capture from coal-fired power plant," Applied Energy, Elsevier, vol. 172(C), pages 323-336.
    4. Hanak, Dawid P. & Biliyok, Chechet & Manovic, Vasilije, 2015. "Efficiency improvements for the coal-fired power plant retrofit with CO2 capture plant using chilled ammonia process," Applied Energy, Elsevier, vol. 151(C), pages 258-272.
    5. Carapellucci, Roberto & Giordano, Lorena & Vaccarelli, Maura, 2015. "Studying heat integration options for steam-gas power plants retrofitted with CO2 post-combustion capture," Energy, Elsevier, vol. 85(C), pages 594-608.

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    Keywords

    CO2 capture; Integration; Retrofit; Greenfield;
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