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Exergy and cost analyses of waste heat recovery from furnace cement slag for clean hydrogen production

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  • Ishaq, H.
  • Dincer, I.
  • Naterer, G.F.

Abstract

This paper examines the performance and viability of a cement slag waste heat recovery system combined with a thermochemical copper-chlorine cycle for hydrogen production combined with hydrogen compression and a reheat Rankine cycle. The waste heat from the cement slag is recovered as a heat source for high-temperature reactions in the copper-chlorine cycle. The clean hydrogen production from waste heat recovery is examined with respect to both energy and exergy efficiencies. The integrated system is simulated and modeled in Aspen Plus. The multigeneration system utilizes the industrial waste heat and significantly reduces operating costs from the waste heat recovery. The overall energy efficiency of the integrated system is obtained as 32.5% while the corresponding exergy efficiency becomes 31.8%.

Suggested Citation

  • Ishaq, H. & Dincer, I. & Naterer, G.F., 2019. "Exergy and cost analyses of waste heat recovery from furnace cement slag for clean hydrogen production," Energy, Elsevier, vol. 172(C), pages 1243-1253.
    • Handle: RePEc:eee:energy:v:172:y:2019:i:c:p:1243-1253
    DOI: 10.1016/j.energy.2019.02.026
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    References listed on IDEAS

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    1. Ishaq, H. & Dincer, I. & Naterer, G.F., 2018. "Exergy-based thermal management of a steelmaking process linked with a multi-generation power and desalination system," Energy, Elsevier, vol. 159(C), pages 1206-1217.
    2. Barati, M. & Esfahani, S. & Utigard, T.A., 2011. "Energy recovery from high temperature slags," Energy, Elsevier, vol. 36(9), pages 5440-5449.
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    Cited by:

    1. Lan, Yuncheng & Zhao, Xudong & Zhang, Wei & Mu, Lianbo & Wang, Suilin, 2022. "Investigation of the waste heat recovery and pollutant emission reduction potential in graphitization furnace," Energy, Elsevier, vol. 245(C).
    2. Marenco-Porto, Carlos A. & Fierro, José J. & Nieto-Londoño, César & Lopera, Leonardo & Escudero-Atehortua, Ana & Giraldo, Mauricio & Jouhara, Hussam, 2023. "Potential savings in the cement industry using waste heat recovery technologies," Energy, Elsevier, vol. 279(C).
    3. Ishaq, H. & Dincer, I., 2019. "Exergy analysis and performance evaluation of a newly developed integrated energy system for quenchable generation," Energy, Elsevier, vol. 179(C), pages 1191-1204.
    4. Razi, Faran & Dincer, Ibrahim & Gabriel, Kamiel, 2020. "Energy and exergy analyses of a new integrated thermochemical copper-chlorine cycle for hydrogen production," Energy, Elsevier, vol. 205(C).
    5. Darabadi Zare, Ali Akbar & Yari, Mortaza, 2024. "Techno economic analysis of efficient and environmentally friendly methods for hydrogen, power, and heat production using chemical looping combustion integrating plastic waste gasification and thermoc," Energy, Elsevier, vol. 289(C).

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