Abstract: Molten salt heat storage system is the key point of solar thermal power station, which has important influence on the safety, reliability and operation cost of power generation system. Based on the analysis of the two element nitrate melt physicochemical properties, the material selection, corrosion resistance, thermal insulation, tank foundation insulation method of the high and low temperature molten salt tank were systematically studied. The optimum design scheme of molten salt tank was given from the angle of technical economy.

Key words: Solar thermal power generation, Molten salt, Tank, Material, Thermal isolation

摘要： 熔盐蓄热储能系统是太阳能光热发电站的设计重点，对发电系统的安全可靠性及运行成本具有重要影响。在分析二元混合硝酸盐熔融态理化特性的基础上，系统研究了高、低温熔盐储罐的选材、防腐、绝热及罐基础隔热方式，并从技术经济性角度给出熔盐储罐的最优设计方案。

关键词: 光热发电, 熔融盐, 储罐, 材料, 绝热