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High and stable Co2 capture capacity of natural limestone at Ca-looping conditions by heat pretreatment and recarbonation synergy

Opened Access High and stable Co2 capture capacity of natural limestone at Ca-looping conditions by heat pretreatment and recarbonation synergy

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Autor: Valverde Millán, José Manuel
Sánchez Jiménez, Pedro Enrique
Pérez Maqueda, Luis Allan
Departamento: Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Universidad de Sevilla. Departamento de Química Inorgánica
Fecha: 2014
Publicado en: Fuel, 123, 79-85.
Tipo de documento: Artículo
Resumen: The Ca-looping (CaL) process, based on the multicyclic carbonation/ calcination of limestone derived CaO, has emerged recently as a potentially economically advantageous technology to achieve sustainable postcombustion and precombustion CO2 capture efficiencies. Yet, a drawback that hinders the efficiency of the CaL process is the drastic drop of limestone capture capacity as the number of carbonation/calcination cycles is increased. Precalcination of limestone at high temperatures for a prolonged period of time has been proposed as a potential technique to reactivate the sorbent, which is however precluded by regeneration temperatures above 850 C and low CO2 concentrations in the carbonator to be found in the practical situation. Under these conditions, heat pretreatment leads to a stable yet very small CaO conversion. On the other hand, the introduction of a recarbonation stage between the ordinary carbonation and calcination stages has been shown to decelerate the rate of sorbent a...
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Cita: Valverde Millán, J.M., Sánchez Jiménez, P.E. y Pérez Maqueda, L.A. (2014). High and stable Co2 capture capacity of natural limestone at Ca-looping conditions by heat pretreatment and recarbonation synergy. Fuel, 123, 79-85.
Tamaño: 565.7Kb
Formato: PDF

URI: https://hdl.handle.net/11441/74181

DOI: 10.1016/j.fuel.2014.01.045

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