Development of internally-circulating fluidized bed reactor for conversion of High-temperature solar heat into hydrogen

开发了一种用于太阳能热化学两步裂解水制氢的加窗内循环流化床反应器，并以氧化锆负载铁基颗粒的活性陶瓷为高活性氧化还原材料，通过安装在反应器顶部的透明石英窗口进行了太阳能模拟氙光辐射的试验。通过将热还原过程中的氮气流动切换为水分解过程中的蒸汽/氮气混合物，考察了利用沸腾床反应器进行连续两步水分离的可行性。通过连续两步水裂解，证实了氢气在单流化床反应器中发生。

A windowed internally circulating fluidized bed reactor was developed for solar thermochemical two-step water splitting to produce hydrogen from water, and tested using reactive ceramic of zirconia-supported iron-based particles as highly-active redox material by solar-simulated Xe light radiation through a transparent quartz window mounted on top of the reactor. The feasibility of successive two-step water splitting using the fluidized bed reactor was examined by switching from Nitrogen gas flow in the thermal reduction step to a steam/Nitrogen gas mixture in the water decomposition step. It was confirmed that hydrogen production takes place in the single fluidized bed reactor by successive two-step water splitting.