氢和氘在FLiNaK熔盐中的渗透扩散行为

利用氢同位素在熔盐中的扩散渗透特性测试系统，本研究对FLiNaK熔盐中氢和氘的渗透扩散行为进行了研究。首先，通过对比分析熔盐侧充氢和金属侧充氢的实验结果，发现通过熔盐侧充氢的实验可更准确地反映FLiNaK熔盐中氢的渗透扩散行为及其性质。其次，通过熔盐侧充氢实验，获得了550-700℃时FLiNaK熔盐中氢的扩散系数与溶解度常数，两者可分别表述为：DH2=1．62×10^-5exp（-48．20×10^3／RgDm2·s^-1和KH2=6．18×10^-5exp（-11．14×10^3／RgT）mol·m^-3·Pa^-1。最后，通过对比分析金属侧充氢和金属侧充氘的实验结果，发现同位素效应并不影...

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Bibliographic Details
Published in核技术 Vol. 41; no. 1; pp. 83 - 88
Main Author 曾友石;吴胜伟;钱渊;杜林;王广华;黄豫;刘文冠;刘卫
Format Journal Article
LanguageChinese
Published 中国科学院上海应用物理研究所嘉定园区 上海 201800 10.01.2018
Subjects
FLiNaK熔盐
扩散
氘
氢
渗透
Deuterium
氢
渗透
Hydrogen
扩散
Permeation
氘
Diffusion
FLiNaK熔盐
Molten FLiNaK
Online AccessGet full text
ISSN0253-3219
DOI10.11889/j.0253-3219.2018.hjs.41.010604

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Summary:利用氢同位素在熔盐中的扩散渗透特性测试系统，本研究对FLiNaK熔盐中氢和氘的渗透扩散行为进行了研究。首先，通过对比分析熔盐侧充氢和金属侧充氢的实验结果，发现通过熔盐侧充氢的实验可更准确地反映FLiNaK熔盐中氢的渗透扩散行为及其性质。其次，通过熔盐侧充氢实验，获得了550-700℃时FLiNaK熔盐中氢的扩散系数与溶解度常数，两者可分别表述为：DH2=1．62×10^-5exp（-48．20×10^3／RgDm2·s^-1和KH2=6．18×10^-5exp（-11．14×10^3／RgT）mol·m^-3·Pa^-1。最后，通过对比分析金属侧充氢和金属侧充氘的实验结果，发现同位素效应并不影响FLiNaK熔盐中氢的渗透扩散行为及其性质的研究，从而为氢和氘代替氚进行FLiNaK熔盐中氚行为性质的研究提供实验基础。
Bibliography:Molten FLiNaK, Hydrogen, Deuterium, Permeation, Diffusion
ZENG Youshi WU Shengwei QIAN Yuan DU Lin WANG Guanghua HUANG Yu LIU Wenguan LIU Wei （Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China）
31-1342/TL
[Background] Molten FLiNaK is a secondary heat-transfer fluid of a molten salt reactor or a FLiBe self-cooled nuclear fusion reactor, in which tritium would be produced at high rates and permeate the molten FLiNaK. [Purpose] The aim is to provide more reliable reference for tritium behaviors in molten FLiNaK by further study of the permeation and diffusion behaviors of hydrogen as well as the isotope effect on hydrogen behaviors. [Methods] Experiments on hydrogen charged at salt surface and metal surface in molten FLiNaK were conducted to study permeation and diffusion characteristics of hydrogen isotope in molten salt. And contrast experiments between hydrogen and deuterium charged at metal surface were carried out to study the isotope effect on hydrogen
ISSN:0253-3219
DOI:10.11889/j.0253-3219.2018.hjs.41.010604