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Calcium-Looping performance of steel and blast furnace slags for thermochemical energy storage in concentrated solar power plants

Opened Access Calcium-Looping performance of steel and blast furnace slags for thermochemical energy storage in concentrated solar power plants

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Autor: Valverde Millán, José Manuel
Miranda Pizarro, Juan
Perejón Pazo, Antonio
Sánchez Jiménez, Pedro Enrique
Pérez Maqueda, Luis Allan
Departamento: Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Fecha: 2017
Publicado en: Journal of CO2 Utilization, 22, 143-154.
Tipo de documento: Artículo
Resumen: The Calcium Looping (CaL) process, based on the carbonation/calcination of CaO, has been proposed as a feasible technology for Thermochemical Energy Storage (TCES) in Concentrated Solar Power (CSP) plants. The CaL process usually employs limestone as CaO precursor for its very low cost, non-toxicity, abundance and wide geographical distribution. However, the multicycle activity of limestone derived CaO under relevant CaL conditions for TCES in CSP plants can be severely limited by pore plugging. In this work, the alternative use of calcium-rich steel and blast furnace slags after treatment with acetic acid is investigated. A main observation is that the calcination temperature to regenerate the CaO is significantly reduced as compared to limestone. Furthermore, the multicycle activity of some of the slags tested at relevant CaL conditions for TCES remains high and stable if the treated samples are subjected to filtration. This process serves to remove silica grains, which helps decrea...
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Cita: Valverde Millán, J.M., Miranda Pizarro, J., Perejón Pazo, A., Sánchez Jiménez, P.E. y Pérez Maqueda, L.A. (2017). Calcium-Looping performance of steel and blast furnace slags for thermochemical energy storage in concentrated solar power plants. Journal of CO2 Utilization, 22, 143-154.
Tamaño: 1.718Mb
Formato: PDF

URI: https://hdl.handle.net/11441/69771

DOI: 10.1016/j.jcou.2017.09.021

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