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Multiscale techno-economic analysis of orange hydrogen synthesis

Author

Listed:
  • Nova, Anna
  • Prifti, Kristiano
  • Negri, Francesco
  • Manenti, Flavio

Abstract

The conversion of hydrogen sulphide into value-added products, hydrogen and elemental sulphur, might be a promising route for the treatment of H2S waste streams and for a circular production of hydrogen. This work investigates the thermal splitting of H2S at different scales: the kinetic scale through dedicated experimental campaigns, the reactor scale with a combined experimental and modelling approach, and the process scale in a commercial simulation environment. The system was tested in a lab-scale reactor at 1 bar and in a temperature range going from 640 °C up to 1100 °C. H2S conversion was measured and used to validate a kinetic scheme implemented in a customized simulation suite. These results were then used for process design and scale-up in Aspen HYSYS, which, considering a feed of 10 t/h of pure H2S, estimated a production of 590.8 kg/h of hydrogen. An economic analysis was performed and the production cost of hydrogen resulted to be 2.23 $/kg.

Suggested Citation

  • Nova, Anna & Prifti, Kristiano & Negri, Francesco & Manenti, Flavio, 2023. "Multiscale techno-economic analysis of orange hydrogen synthesis," Energy, Elsevier, vol. 282(C).
    • Handle: RePEc:eee:energy:v:282:y:2023:i:c:s0360544223020388
    DOI: 10.1016/j.energy.2023.128644
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    References listed on IDEAS

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    1. Mohammad Ostadi & Kristofer Gunnar Paso & Sandra Rodriguez-Fabia & Lars Erik Øi & Flavio Manenti & Magne Hillestad, 2020. "Process Integration of Green Hydrogen: Decarbonization of Chemical Industries," Energies, MDPI, vol. 13(18), pages 1-16, September.
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    More about this item

    Keywords

    Hydrogen; H2S; Kinetics; Process simulation; Circular economy;
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