Membrane reactors for green hydrogen production from biogas and biomethane: A techno-economic assessment |
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| Affiliation: | 1. Politecnico di Milano, Dipartimento di Energia, via Lambruschini 4a, 20156, Milano, Italy;2. Eindhoven University of Technology, Department of Chemical Engineering and Chemistry, Sustainable Process Engineering, De Rondom 70, Eindhoven 5612 AP, the Netherlands;3. Università degli Studi di Brescia, Dipartimento di Ingegneria Meccanica e Industriale, via Branze 38, 25123, Brescia, Italy |
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| Abstract: | This work investigates the performance of a fluidized-bed membrane reactor for pure hydrogen production. A techno-economic assessment of a plant with the production capacity of 100 kgH2/day was carried out, evaluating the optimum design of the system in terms of reactor size (diameter and number of membranes) and operating pressures. Starting from a biomass source, hydrogen production through autothermal reforming of two different feedstock, biogas and biomethane, is compared.Results in terms of efficiency indicates that biomethane outperforms biogas as feedstock for the system, both from the reactor (97.4% vs 97.0%) and the overall system efficiency (63.7% vs 62.7%) point of views. Nevertheless, looking at the final LCOH, the additional cost of biomethane leads to a higher cost of the hydrogen produced (4.62 €/kgH2@20 bar vs 4.39 €/kgH2@20 bar), indicating that at the current price biogas is the more convenient choice. |
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| Keywords: | Hydrogen production Biogas Biomethane Membrane reactors Process intensification Modelling |
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