Abstract: The technology of tritium extraction from lithium-lead alloy has been simulated, hydrogen extraction from lithium-lead alloy by bubbling with rotational jet nozzle being used to simulate tritium in the study based on the introduction of fluid dynamics to establish algebraic model. The results show that the higher than lithium-lead melting temperature, the higher cumulative hydrogen extraction efficiency, and gas holdup of bubble column is little affected by the impeller diameter. Gas holdup when using small aperture is slightly higher when using large aperture only at a high helium flow rate, but the smaller the aperture, the greater the bubble surface area, and a marked increase in intensity of flow circulation for liquid lithium-lead with the increase of helium flow rate, hydrogen extraction rate increases too. Moreover, influence of the jet rotational velocity on hydrogen extraction is limited.

Key words: Bubble, Lithium-lead alloy, Extraction, Hydrogen

摘要： 模拟了锂铅合金中氚提取技术，在采用流体力学建立代数模型的基础上，开展了旋转喷嘴鼓泡法提取锂铅合金中氢的研究。研究结果表明：锂铅熔融温度越高，氢提取累计效率越高；鼓泡床气含率受叶轮孔径影响不大，只是在较高的氦气流速下，采用小孔径时的气含率略高于大孔径，但孔径越小，气泡比表面积越大；随着氦气流速的增加，液态锂铅流循环强度明显增加，氢提取速率加快；喷头转速对氢提取影响有限。

关键词: 鼓泡, 锂铅合金, 提取, 氢