Malsegna, Barbara;
Sebastiani, Alex;
da Gama Paz-Dias, João Guilherme;
Di Luca, Francesco;
Di Giuliano, Andrea;
Gallucci, Katia;
Materazzi, Massimiliano;
(2024)
Simulation of a sorption-enhanced water gas-shift pilot technology for pure hydrogen production from a waste gasification plant.
Fuel Processing Technology
, 254
, Article 108032. 10.1016/j.fuproc.2024.108032.
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Abstract
This study has analysed and optimised a 5-column sorption enhanced water gas shift (SEWGS) pilot unit, set to operate for the first time in a waste gasification facility for the production of transport-grade hydrogen and CO2 streams. Full process simulation was undertaken by developing a one-dimensional model of each reactor, with boundary conditions directly informed by real plant operation. From the sensitivity analysis performed, syngas flowrate variations were seen to have a minor but temporary, impact on hydrogen product specifications, while changes to syngas composition were shown to have a longer-lasting effect on system performance. Based on full cycle operation results, the current 5-column SEWGS unit design was concluded to be inadequate for fuel-cell-grade H2 production, despite obtaining a high H2 purity of 99.5%, mainly due to its excessive steam consumption. However, the process achieved an exceptionally high CO2 purity of 99.9%, and 88.6% hydrogen recovery rate, suggesting its potential use in carbon capture and heat-grade hydrogen production applications.
| Type: | Article |
|---|---|
| Title: | Simulation of a sorption-enhanced water gas-shift pilot technology for pure hydrogen production from a waste gasification plant |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.fuproc.2024.108032 |
| Publisher version: | http://dx.doi.org/10.1016/j.fuproc.2024.108032 |
| Language: | English |
| Additional information: | © 2024 The Authors. Published by Elsevier B.V. under a Creative Commons license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Sorption-enhanced water-gas shift, Hydrotalcite, Waste gasification, Renewable hydrogen, BECCS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10186061 |
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