Article
Effect of milling mechanism on the CO2 capture performance of limestone in the Calcium Looping process
Author/s | Benítez Guerrero, Mónica
Valverde Millán, José Manuel Perejón Pazo, Antonio Sánchez Jiménez, Pedro Enrique Pérez Maqueda, Luis Allan |
Department | Universidad de Sevilla. Departamento de Química Inorgánica Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Publication Date | 2018 |
Deposit Date | 2022-10-13 |
Published in |
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Abstract | This work analyzes the relevant influence of milling on the CO2 capture performance of CaO derived from
natural limestone. Diverse types of milling mechanisms produce contrasting effects on the microstructure of the
CaO ... This work analyzes the relevant influence of milling on the CO2 capture performance of CaO derived from natural limestone. Diverse types of milling mechanisms produce contrasting effects on the microstructure of the CaO formed after calcination of the milled limestone samples, which affects crucially the kinetics of carbonation at conditions for CO2 capture. The capture capacity of CaO derived from limestone samples milled using either shear or impact based mills is impaired compared to as-received limestone. After calcination of the milled samples, the resulting CaO porosity is increased while crystallinity is enhanced, which hinders carbonation. Conversely, if the material is simultaneously subjected to intense impact and shear stresses, CaO porosity is promoted whereas CaO cristanillity is reduced, which enhances carbonation in both the reaction and solid-state diffusion controlled regimes. |
Funding agencies | Ministerio de Economía y Competitividad (MINECO). España Universidad de Sevilla |
Project ID. | CTQ2014-52763-C2
CTQ2017-83602-C2 VI PPIT-US V PPIT-US |
Citation | Benítez Guerrero, M., Valverde Millán, J.M., Perejón Pazo, A., Sánchez Jiménez, P.E. y Pérez Maqueda, L.A. (2018). Effect of milling mechanism on the CO2 capture performance of limestone in the Calcium Looping process. Chemical Engineering Journal, 346, 549-556. https://doi.org/10.1016/j.cej.2018.03.146. |
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