Effect of Water Formation Reaction on Tritium Release Behavior from Li4SiO4
Effect of Water Formation Reaction on Tritium Release Behavior from Li4SiO4
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DOI：
10.13182/fst11-a12619
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发表时间：
2011-10
影响因子：
0.9
通讯作者：
H. Yamasaki;K. Kashimura;T. Kanazawa;K. Katayama;N. Yamashita;S. Fukada;M. Nishikawa
中科院分区：
文献类型：
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作者：
H. Yamasaki;K. Kashimura;T. Kanazawa;K. Katayama;N. Yamashita;S. Fukada;M. Nishikawa
通过引入干燥的N2气体，观察到相当数量的物理和化学吸附水从固体增殖材料中释放出来，并且当施加含氢的吹扫气体时，通过水形成反应也连续产生不少量的水。本文报道了固体增殖材料释放到吹扫气体中的水对氚释放行为的影响。定量研究了由FzK提供的Li_4SiO_4的化学吸附水容量、化学吸附水脱附速率、化学吸附水生成反应的容量和速率。据发现，在Li4SiO4上形成水的总反应速率大于对于其他固体增殖材料观察到的速率。因此，添加到覆盖层吹扫气体中的大部分氢变为水，只要Li4SiO4的水形成能力保持不变。Li_4SiO_4和Li_2TiO_3的产水能力基本相同。本文利用九州大学的模型和本研究中获得的性质，比较了填充在包层中的Li_4SiO_4和Li_2TiO_3的氚释放行为。
Abstract It is observed that a fair amount of physical and chemical adsorbed water is released from solid breeder materials by introduction of dry N2 gas and that not a little amount of water is also continuously produced by the water formation reaction when the purge gas with hydrogen is applied. It is reported by present authors that the water released to the purge gas from solid breeder materials affects the tritium release behavior. The capacity and desorption rate of chemical adsorbed water, and the capacity and rate of water formation reaction for Li4SiO4, which has been supplied from FzK, are quantified in this study. It is found that the overall reaction rate of water formation on Li4SiO4 is larger than the rate observed for other solid breeder materials. Therefore, most hydrogen added to the blanket purge gas changes to water so far as the water formation capacity of Li4SiO4 remains. It is also found that water formation capacity of Li4SiO4 is almost the same as that of Li2TiO3. Tritium release behavior from Li4SiO4 and Li2TiO3 packed in the blanket are compared in this paper using the Kyushu University model and properties obtained in this study.