A shrinking core model for steam hydration of CaO-based sorbents cycled for CO2 capture

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dc.contributor.authorBlamey, John
dc.contributor.authorZhao, Ming
dc.contributor.authorManovic, Vasilije
dc.contributor.authorAnthony, Edward J.
dc.contributor.authorDugwell, Denis R.
dc.contributor.authorFennell, Paul S.
dc.date.accessioned2016-09-02T07:48:43Z
dc.date.available2016-09-02T07:48:43Z
dc.date.issued2016-02-01
dc.description.abstractCalcium looping is a developing CO2 capture technology. It is based on the reversible carbonation of CaO sorbent, which becomes less reactive upon cycling. One method of increasing the reactivity of unreactive sorbent is by hydration in the calcined (CaO) form. Here, sorbent has been subjected to repeated cycles of carbonation and calcination within a small fluidised bed reactor. Cycle numbers of 0 (i.e., one calcination), 2, 6 and 13 have been studied to generate sorbents that have been deactivated to different extents. Subsequently, the sorbent generated was subjected to steam hydration tests within a thermogravimetric analyser, using hydration temperatures of 473, 573 and 673 K. Sorbents that had been cycled less prior to hydration hydrated rapidly. However, the more cycled sorbents exhibited behaviour where the hydration conversion tended towards an asymptotic value, which is likely to be associated with pore blockage. This asymptotic value tended to be lower at higher hydration temperatures; however, the maximum rate of hydration was found to increase with increasing hydration temperature. A shrinking core model has been developed and applied to the data. It fits data from experiments that did not exhibit extensive pore blockage well, but fits data from experiments that exhibited pore blockage less well.en_UK
dc.identifier.citationJohn Blamey, Ming Zhao, Vasilije Manovic, Edward J. Anthony, Denis R. Dugwell, Paul S. Fennell, A shrinking core model for steam hydration of CaO-based sorbents cycled for CO2 capture, Chemical Engineering Journal, Volume 291, 1 May 2016, pp298-305en_UK
dc.identifier.issn1385-8947
dc.identifier.urihttp://dx.doi.org/10.1016/j.cej.2016.01.086
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/10487
dc.language.isoenen_UK
dc.publisherRlsevieren_UK
dc.rights(c)2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND. Attribution-Non-Commercial-No Derivs 4.0 Unported (CC BY-NC-ND 4.0). You are free to: Share — copy and redistribute the material in any medium or format. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: Non-Commercial — You may not use the material for commercial purposes. No Derivatives — If you remix, transform, or build upon the material, you may not distribute the modified material. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.subjectReaction engineeringen_UK
dc.subjectKineticsen_UK
dc.subjectEnergyen_UK
dc.subjectAdsorptionen_UK
dc.subjectCO2 captureen_UK
dc.subjectCalcium loopingen_UK
dc.titleA shrinking core model for steam hydration of CaO-based sorbents cycled for CO2 captureen_UK
dc.typeArticleen_UK

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