Apparatus for determining permeability of hydrogen isotopes in molten-salt

作     者：曾友石 吴胜伟 钱渊 王广华 杜林 刘卫 夏正海 

作者机构：University of Chinese Academy of Sciences Key Laboratory of Nuclear Radiation and Nuclear Energy TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences CNNC Nuclear Power Operations Management Co.Ltd. 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2014年第25卷第4期

页      面：73-78页

核心收录：

学科分类：082703[工学-核技术及应用] 08[工学] 0827[工学-核科学与技术] 

主　　题：氢同位素 熔融盐 渗透性 装置 实验程序 空白试验 溶解度 熔盐堆 

摘      要：In order to provide data on diffusion coefficients and solubility constants of tritium in molten salts for the critical issue of tritium control in the Thorium Molten Salt Reactor(TMSR)program,a two-chamber permeability apparatus separated by a nickel plate had been developed for determining the permeability of hydrogen isotope in molten *** on the permeability apparatus,experimental procedure and the analytical method for determining the diffusivity and solubility of hydrogen isotope in molten salts were presented in this *** assess the performance of the apparatus,the blank tests without molten salt were conducted at300-700℃.The results showed that the nickel plate acting as the window for hydrogen isotope permeation in the apparatus seemed to have less effect on experiments of determining the permeability of hydrogen isotope in molten slat at 500-700℃.Furthermore,the applicability of the apparatus with molten salt was also evaluated experimentally,with test experiments of molten Flinak(LiF-NaF-KF)at 500℃,600℃and 700℃.Diffusion coefficients and solubility constants of hydrogen in molten Flinak can be derived from those test experiments,which were correlated to D_(Flinak-H)=7.06×10^(-5)e^(-54.9/(R_gT))m^2/s and s_(Flinak-H)=1.67×10^(-7)e^(27.0/(r_gt))mol-H_2/(m^3 Pa).