化工学报2019，Vol.70Issue(6)：2083-2091,9.DOI:10.11949/j.issn.0438-1157.20181406
LiNO3-NaNO3-KNO3三元熔盐材料的设计及热稳定性研究
Design and thermal stability study of LiNO3-NaNO3-KNO3 ternary molten salt system
摘要
Abstract
According to the binary molten salt system phase diagrams, the phase diagram of LiNO3-NaNO3-KNO3 ternary molten salt system was calculated with the CIS model, it turned out that, the lowest eutectic melting point was 117.7℃and the corresponding composition was x(LiNO3)=0.375,x(NaNO3)=0.075 and x(KNO3)=0.550. The eutectic mixture was prepared based on the predicted eutectic composition, and a experiment test was carried out by the thermal gravimetric analysis (TG) and differential scanning calorimeter (DSC). The DSC test showed that the experimental melting point was 117.7℃, which was in good agreement with the result of this calculation. The TG test results show that the ternary molten salt system is stable when the temperature is below 587.2°C, and its working temperature range is 118.3—587.2°C. The system is quite suitable as a material for high-temperature heat transfer and heat storage in solar thermal power generation.关键词
太阳能/三元熔盐/相平衡/模型/潜热/热稳定性Key words
solar energy/ternary molten salt/phase equilibria/moldling/latent heat/thermal stability分类
能源科技引用本文复制引用
赵柏岑,丁静,魏小兰,刘彬,陆建峰,王维龙..LiNO3-NaNO3-KNO3三元熔盐材料的设计及热稳定性研究[J].化工学报,2019,70(6):2083-2091,9.基金项目
宁夏重点研发计划项目(2017BY064) （2017BY064）
宁夏大学研究生创新项目(GIP2018041) （GIP2018041）
宁夏回族自治区"化学工程与技术"一流学科建设项目(NXYLXK2017A04) （NXYLXK2017A04）
