RESEARCH ON ROTATIONAL MOLDING OF CALCIUM-BASED ENERGY CARRIERS FOR SOLAR THERMOCHEMICAL ENERGY STORAGE

Wang Jifu; Liu Yunbo; Ding Zhengxin; Wang Pengzhao; Wei Jinjia; Long Jinlin

doi:10.19912/j.0254-0096.tynxb.2025-0604

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (8) : 68-74. DOI: 10.19912/j.0254-0096.tynxb.2025-0604

RESEARCH ON ROTATIONAL MOLDING OF CALCIUM-BASED ENERGY CARRIERS FOR SOLAR THERMOCHEMICAL ENERGY STORAGE

Wang Jifu¹, Liu Yunbo¹, Ding Zhengxin², Wang Pengzhao¹, Wei Jinjia³, Long Jinlin²

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Abstract

This study uses rotational granulation to shape Ca-based pellets with a 2-3 mm diameter and achieves its ton-scale production. By using self-made aluminum sol and optimizing the rotational granulation process, Ca-based pellets with an atomic ratio of Fe：Mn∶Mg∶Ca=3∶3∶10∶100 and 10% Al₂O₃ content are obtained. Al and Mg elements are uniformly distributed, while Fe and Mn exhibit a gradient increase from the interior to the exterior. The pellets demonstrate high crushing strength, anti-sintering stability, excellent sphericity, and strong light absorptivity. After 25 carbonation/calcination cycles, the material retains an energy storage density of 1368 kJ/kg, showcasing potential for application in CSP thermochemical energy storage.

Key words

thermochemical energy storage / Ca-based energy carriers / rotational molding / spherical pellets

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Wang Jifu, Liu Yunbo, Ding Zhengxin, Wang Pengzhao, Wei Jinjia, Long Jinlin. RESEARCH ON ROTATIONAL MOLDING OF CALCIUM-BASED ENERGY CARRIERS FOR SOLAR THERMOCHEMICAL ENERGY STORAGE[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 68-74 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0604

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