含氚氢同位素中少量氕的去除技术研究

The Fast Removal Techniques of a Small Amount of Protium from Hydrogen Isotopes Gas

摘要: 基于前期钯与氢同位素间的基础研究以及相关的工艺实验探索结果，提出了一种能从氘氚气体中快速去除少量氕的新方法—钯留滞法。该方法充分利用常温或低温下钯氢化物的同位素效应，使含氕的氘氚气体流经钯分离柱后，能将少量氕优先留滞在钯分离材料中，从而达到气相氕贫化、固相氕富集的分离效果。实验结果表明，与钯热置换法相比，在相同的处理时间及装钯量下，分离能力提高了近10倍，产品气的提取效率由40%提高至50%~60%左右，大大降低了工作人员的操作强度，提高了工作效率。

Abstract: Based on the early stage of the palladium interact with hydrogen isotopes of basic research and related technical research, a kind of new method was proposed which can quickly remove a small amount of protium from the deuterium-tritium gas—palladium retention method. The method makes full use of the isotope effect of palladium-hydride system. When hydrogen isotopes gas with a small amount of protium flows through the separation column at normal temperature or low temperature, a small amount of protium priority can be detention in palladium separation material, so as to achieve the gas phase protium dilution, and protium enrichment in solid phase .Results show that compared with palladium thermal displacement method, under the same processing time and the loading amount of palladium, by about 10 times the separation ability, product gas extraction efficiency from 40% to 60%, greatly reduce the intensity of the operating staff and improve work efficiency.