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CO2capture performance of Ca-Mg acetates at realistic Calcium Looping conditions

Opened Access CO2capture performance of Ca-Mg acetates at realistic Calcium Looping conditions

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Autor: Miranda Pizarro, Juan
Perejón Pazo, Antonio
Valverde Millán, José Manuel
Pérez Maqueda, Luis Allan
Sánchez Jiménez, Pedro Enrique
Departamento: Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Universidad de Sevilla. Departamento de Química Inorgánica
Fecha: 2017
Publicado en: Fuel, 196, 497-507.
Tipo de documento: Artículo
Resumen: The Calcium Looping (CaL) process, based on the cyclic carbonation/calcination of CaO, has emerged in the last years as a potentially low cost technique for CO2capture at reduced energy penalty. In the present work, natural limestone and dolomite have been pretreated with diluted acetic acid to obtain Ca and Ca-Mg mixed acetates, whose CO2capture performance has been tested at CaL conditions that necessarily imply sorbent regeneration under high CO2partial pressure. The CaL multicycle capture performance of these sorbents has been compared with that of CaO directly derived from limestone and dolomite calcination. Results show that acetic acid pretreatment of limestone does not lead to an improvement of its capture capacity, although it allows for a higher calcination efficiency to regenerate CaO at reduced temperatures (∼900 °C) as compared to natural limestone (>∼930 °C). On the other hand, if a recarbonation stage is introduced before calcination to reactivate the sorbent, a signifi...
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Cita: Miranda Pizarro, J., Perejón Pazo, A., Valverde Millán, J.M., Pérez Maqueda, L.A. y Sánchez Jiménez, P.E. (2017). CO2capture performance of Ca-Mg acetates at realistic Calcium Looping conditions. Fuel, 196, 497-507.
Tamaño: 1.952Mb
Formato: PDF

URI: https://hdl.handle.net/11441/69885

DOI: 10.1016/j.fuel.2017.01.119

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