膨胀蛭石/LaCl_(3)复合材料的热化学储热性能  

Study of the performance of expanded vermiculite/LaCl_(3) composite materials for thermochemical energy storage

作　　者：夏骏 楼波[1] 廖宇燊 杨维枝 黎俊杰 XIA Jun;LOU Bo;LIAO Yu-shen;YANG Wei-zhi;LI Jun-jie(School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学电力学院,广东广州510640

出　　处：《应用化工》2022年第3期722-727,736,共7页Applied Chemical Industry

基　　金：广东省能源高效利用基金(2013A061401005)。

摘　　要：将LaCl_(3)浸渍到膨胀蛭石中,制备了一种以多孔材料为载体的复合材料,在反应器内对材料的水合释热过程进行了研究。结果表明,膨胀蛭石的孔隙结构为LaCl_(3)的液解提供了的承载空间,单次循环复合材料的质量储热密度最高可达1084.2 kJ/kg,体积储热密度94.09 kWh/m^(3);但6次循环后,复合材料的储热密度下降了43%,这主要是由于部分LaCl_(3)泄露堵住蛭石的孔隙所致。LaCl_(3)was impregnated into the expanded vermiculite to prepare a composite material with a porous material as a carrier.The hydration and heat release process of the material was studied in the laboratory-scale reactor.The results show that the pore structure of the expanded vermiculite provided a bearing space for the liquid decomposition of LaCl_(3).The mass heat storage density of the composite material in a single cycle could reach up to 1084.2 kJ/kg,and the volume heat storage density was 94.09 kWh/m^(3),but the heat storage density of the composite material decreased by 43%after six cycles,which was mainly due to the leakage of part of the LaCl_(3)to block the pores of the vermiculite.

关 键 词：氯化镧 膨胀蛭石 复合材料 热化学储热 储热密度 循环稳定性 太阳能 

分 类 号：TQ133.3[化学工程—无机化工] TK02[动力工程及工程热物理]