Multiscale techno-economic analysis of orange hydrogen synthesis

Anna Nova, Kristiano Prifti, Francesco Negri and Flavio Manenti

Energy, 2023, vol. 282, issue C

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.

Keywords: Hydrogen; H2S; Kinetics; Process simulation; Circular economy (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:282:y:2023:i:c:s0360544223020388

DOI: 10.1016/j.energy.2023.128644

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