English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/164276
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

CO2 Carrying Capacities of Cement Raw Meals in Calcium Looping Systems

AutorAlonso Carreño, Mónica ; Álvarez Criado, Yolanda ; Fernández García, José Ramón ; Abanades García, Juan Carlos
Fecha de publicación31-oct-2017
EditorAmerican Chemical Society
CitaciónEnergy and Fuels 31(12): 13955-13962 (2017)
ResumenCalcium looping, CaL, is an emerging CO2 capture technology that is of special interest for use in cement plants, as it offers the possibility of exploiting several energy and material synergies. In this work, the CO2 carrying capacity of calcined raw meal materials for cement plants has been investigated with thermogravimetric equipment in a wide range of testing conditions. When calcination was carried out at high temperatures and over long times, some raw meals display a sharp decrease in their subsequent CO2 capture capacity compared to their limestone counterparts, while others perform as expected from their CaO content. XRD observations of calcined samples confirmed the formation of Ca2SiO4, i.e., belite, as the main deactivation agent, since belite formation removes active CaO for CO2 capture during the carbonation stage. The extent of belite formation was found to be greatly influenced by the nature of the raw meal (in particular by the level of aggregation of Ca and Si atoms in the material), by the calcination temperature, by reaction atmosphere, and by the duration of the calcination stage. The screening of conditions to minimize belite formation indicates that calcination time should be below 1 min, at the typically high calcination temperatures required in CaL systems (i.e., slightly over 900 °C), thus ensuring that the CO2 carrying capacity of these raw meals is kept at a level as close as possible to the value in equivalent materials with the same CaCO3 content.
Versión del editorhttps://doi.org/10.1021/acs.energyfuels.7b02586
URIhttp://hdl.handle.net/10261/164276
DOI10.1021/acs.energyfuels.7b02586
ISSN0887-0624
E-ISSN1520-5029
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
CO2_carrying_Alonso.pdf4,14 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.