The fluidized bed reactor has been recognized for large-scale CaO/Ca(OH)₂ heat storage system. In this work, the effects of critical factors such as particle size, fluidization number, steam concentration in hydration, initial temperature, cycle number and type of carrier gas on heat release performance of CaO in the fluidized bed reactor were experimentally investigated. CaO under fluidization state exhibits excellent cyclic stability on the heat release performance. The decay in heat release temperature of CaO under fluidization state is less 10% of that under static state. With increasing the cycle number, the heat release temperature of CaO using N₂ as carrier gas decreases because of the rapid expansion of particles. After 20 cycles with N₂ as carrier gas, the average particle size of CaO increases by 46.2% and the hydration conversion of CaO reaches above 95%. The hydration conversion of CaO experienced 20 cycles using air as carrier gas is 20% lower than that using N₂ as carrier gas due to the presence of CO₂ in air. The experimental investigation of CaO/Ca(OH)₂ heat storage provides an important reference for the development of CaO/Ca(OH)₂ system using the fluidized bed reactor.

流化床反应器已被公认为大型CaO/Ca(OH) ₂蓄热系统。在这项工作中，通过实验研究了粒径、流化数、水合蒸汽浓度、初始温度、循环次数和载气类型等关键因素对流化床反应器中 CaO 放热性能的影响。CaO在流化状态下的放热性能表现出优异的循环稳定性。CaO在流化状态下的放热温度衰减小于静态下的10%。随着循环次数的增加，由于颗粒的快速膨胀，以N ₂为载气的CaO的放热温度降低。用 N ₂循环 20 次后作为载气，CaO的平均粒径增加了46.2%，CaO的水合转化率达到95%以上。由于空气中存在CO ₂，使用空气作为载气进行20次循环后CaO的水合转化率比使用N ₂作为载气的低20% 。CaO/Ca(OH) ₂蓄热实验研究为利用流化床反应器开发CaO/Ca(OH) ₂体系提供了重要参考。