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Possible optimal configurations for the ZECOMIX high efficiency zero emission hydrogen and power plant

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  • Calabrò, Antonio
  • Deiana, Paolo
  • Fiorini, Paolo
  • Girardi, Giuseppe
  • Stendardo, Stefano

Abstract

Coal use for electricity generation will continue growing in importance. In the present work the optimization of a high efficiency and zero emissions coal-fired plant, which produces both hydrogen and electricity, has been developed. The majority of this paper concerns an integration of gasification unit, which is characterized by coal hydrogasification and carbon dioxide (CO2) separation, with a power island, where a high-hydrogen content syngas is burnt with pure oxygen stream. Another issue is the high temperature CO2 desorption. Because of the elevated temperature heat supply, the regeneration process affects the overall performance of ZECOMIX plant. An advanced steam cycle characterized by a medium pressure steam compressor and expander has been considered for power generation. A preliminary study of different components leads to analyze possible routes for optimization of the whole plant. The plant equipped with a CO2 capture unit could reach efficiency close to 50%. The simulations of a thermodynamic model were carried out using the software ChemCAD.

Suggested Citation

  • Calabrò, Antonio & Deiana, Paolo & Fiorini, Paolo & Girardi, Giuseppe & Stendardo, Stefano, 2008. "Possible optimal configurations for the ZECOMIX high efficiency zero emission hydrogen and power plant," Energy, Elsevier, vol. 33(6), pages 952-962.
    • Handle: RePEc:eee:energy:v:33:y:2008:i:6:p:952-962
    DOI: 10.1016/j.energy.2008.01.004
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    References listed on IDEAS

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    1. Mathieu, Philippe, 2004. "Towards the hydrogen era using near-zero CO2 emissions energy systems," Energy, Elsevier, vol. 29(12), pages 1993-2002.
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    Cited by:

    1. Kobayashi, Makoto & Akiho, Hiroyuki & Nakao, Yoshinobu, 2015. "Performance evaluation of porous sodium aluminate sorbent for halide removal process in oxy-fuel IGCC power generation plant," Energy, Elsevier, vol. 92(P3), pages 320-327.
    2. Yan, Linbo & He, Boshu & Pei, Xiaohui & Li, Xusheng & Wang, Chaojun, 2013. "Energy and exergy analyses of a Zero emission coal system," Energy, Elsevier, vol. 55(C), pages 1094-1103.

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    Keywords

    Coal hydrogasification; CO2 capture; Hydrogen;
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