Chacartegui, R. , Gravanis, G. , Carro, A. , ORTIZ DOMÍNGUEZ, CARLOS, Perez-Maqueda, L. A. , Amghar, N. , Tejada, C. , Karagiannakis, G. , Tsimpanogiannis, I. N. , Papadopoulou, S. , Voutetakis, S.
No
Chem. Eng. J.
Article
Científica
15/11/2025
001603973700001
Deploying reliable and sustainable large-scale energy storage is a significant challenge for the widespread adoption of renewable energy sources. Thermal energy storage solutions can provide scalable solutions for renewable power and industrial processes. The calcium looping-based energy storage system stands out for its high energy density, low cost, non-toxicity, and wide availability of limestone as a precursor material. The thermochemical energy storage cyclic process occurs through the calcination of calcium carbonate and its subsequent recovery through carbonation of calcium oxide. This work presents the development and tests of a novel entrained flow carbonator developed during the SOCRATCES EU project. The results show for the first time a successful CaO carbonation reaction in kW-scale equipment under energy storage conditions. The carbonation reaction occurs in an entrained flow reactor in few seconds at the temperature and pressure conditions required for the Calcium-looping-based energy storage system (700-800 degrees C). It demonstrates the feasibility of the entrained flow reactor concept for carbonation and its potential for MW-scale solar plants.