Pilot-scale calcination of limestone in steam-rich gas for direct air capture

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dc.contributor.authorErans, María
dc.contributor.authorNabavi, Seyed Ali
dc.contributor.authorManovic, Vasilije
dc.date.accessioned2019-04-29T16:27:58Z
dc.date.available2019-04-29T16:27:58Z
dc.date.issued2019-03-06
dc.description.abstractA novel polygeneration concept, which has been proposed recently, comprises a fuel-cell calciner integrated system in order to produce electricity and lime which can be used for direct air capture (DAC) to remove CO2 from the atmosphere. However, the scalability of the integrated system needs to be further studied. In this work, calcination of limestone under steam-rich conditions simulating flue gas from a solid oxide fuel cell (SOFC), and subsequent ambient carbonation has been explored. Limestone was calcined under two steam concentration (21% and 35% vol) conditions in a 25 kWth pilot-scale bubbling fluidised bed (BFB), and then exposed to ambient air to evaluate DAC performance. Samples were characterised in order to quantify the hydration and carbonation conversions over time and, therefore, their DAC capacity. It was observed that steam reduces calcination time, confirming its catalytic effect, while the calcination temperature remained the same regardless of the steam composition at the same CO2 partial pressure. Moreover, increasing steam concentration during calcination affected the material performance and DAC capacity at ambient conditions positively. Therefore, these findings demonstrate that limestone calcined under typical SOFC afterburner exhaust conditions is suitable as a DAC sorbent.en_UK
dc.identifier.citationErans M, Nabavi SA, Manović V. (2019) Pilot-scale calcination of limestone in steam-rich gas for direct air capture. Energy Conversion and Management: X, Volume 1, January 2019, Article Number 100007en_UK
dc.identifier.cris23216644
dc.identifier.issn2590-1745
dc.identifier.urihttps://doi.org/10.1016/j.ecmx.2019.100007
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14121
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.relation.ispartofseries;100007
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectcalcinationen_UK
dc.subjectsteamen_UK
dc.subjectCO2 captureen_UK
dc.subjectdirect air captureen_UK
dc.subjectlimestoneen_UK
dc.titlePilot-scale calcination of limestone in steam-rich gas for direct air captureen_UK
dc.typeArticleen_UK

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