Micro-scale CFD modeling of reactive mass transfer in falling liquid films within structured packing materials

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dc.contributor.author Sebastia-Saez, Daniel
dc.contributor.author Gu, Sai
dc.contributor.author Ranganathan, Panneerselvam
dc.contributor.author Papadikis, Konstantinos
dc.date.accessioned 2016-02-22T12:19:53Z
dc.date.available 2016-02-22T12:19:53Z
dc.date.issued 2015-02
dc.identifier.citation Daniel Sebastia-Saez, Sai Gu, Panneerselvam Ranganathan, Konstantinos Papadikis, Micro-scale CFD modeling of reactive mass transfer in falling liquid films within structured packing materials, International Journal of Greenhouse Gas Control, Volume 33, February 2015, Pages 40-50 en_UK
dc.identifier.issn 1750-5836
dc.identifier.issn 1750-5836
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/9720
dc.identifier.uri http://dx.doi.org/10.1016/j.ijggc.2014.11.019
dc.description.abstract Post-combustion carbon capture in structured packing columns is considered as a promising technology to reduce greenhouse gas (GHG) emissions because of its maturity and the possibility of being retrofitted to existing power plants. CFD plays an important role in the optimization of this technology. However, due to the current computational capacity limitations, the simulations need to be divided into three scales (i.e. micro-, meso- and macro-scale) depending on the flow characteristics to be analyzed. This study presents a 3D micro-scale approach to describe the hydrodynamics and reactive mass transfer of the CO2-MEA chemical system within structured packing materials. Higbie's penetration theory is used to describe the mass transfer characteristics whereas enhancement factors are implemented to represent the gain in the absorption rate attributable to the chemical reaction. The results show a detrimental effect of the liquid load on the absorption rate via a decrease in the enhancement factor. The evolution of the wetted area for MEA solutions is compared to the case of pure water highlighting the differences in the transient behavior. The CO2 concentration profiles are examined showing the capability of the model to reproduce the depletion of the solute within the bulk liquid ascribed to the high value of the Hatta number. Also, several approaches on the reaction mechanism such as reversibility and instantaneous behavior are assessed. The results from micro-scale are to be used in meso-scale analysis in future studies to optimize the reactive absorption characteristics of structured packing materials. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution 3.0 Unported (CC BY 3.0). 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: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.subject VOF en_UK
dc.subject Structured packing en_UK
dc.subject Carbon capture en_UK
dc.subject CFD en_UK
dc.subject Reactive mass transfer en_UK
dc.title Micro-scale CFD modeling of reactive mass transfer in falling liquid films within structured packing materials en_UK
dc.type Article en_UK

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