Abstract An exhaust detritiation system using commercially available hollow fiber-type polyimide membrane modules, a PM system, was installed and applied for tritium recovery in the vacuum vessel purge gas of a large fusion test device. The PM system is operated annually and there were no serious malfunctions after starting the operation for approximately 2.5 y. The continuous recovery of tritiated water without the heating operation and the switching of valves as well as the regeneration operation of molecular sieves, was demonstrated. The tritium in the process gas was successfully recovered by the PM system even though the average tritium concentration at the inlet of the PM system was less than the order of 10−3 Bq/cm3. The detritiation factor and tritium recovery ratio were greater than 103 and 0.97, respectively. The tritium concentration at the outlet of the PM system was maintained in the order of 10−6 Bq/cm3 irrespective of the tritium concentration at the inlet of the PM system. Thus, the operating data indicates that the PM system has a potentially higher detritiation factor than DF = 103.

中文翻译：

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使用聚合物膜的尾气脱硝系统的初步运行结果

摘要 使用市售中空纤维型聚酰亚胺膜组件的排气脱氚系统，即PM系统，安装并应用于大型聚变试验装置的真空容器吹扫气体中的氚回收。PM 系统每年运行一次，开始运行约 2.5 年后没有出现严重故障。演示了无需加热操作和阀门切换以及分子筛再生操作的氚水的连续回收。尽管 PM 系统入口处的平均氚浓度低于 10-3 Bq/cm3 的数量级，但 PM 系统成功地回收了工艺气体中的氚。脱氚因子和氚回收率分别大于 103 和 0.97。无论 PM 系统入口处的氚浓度如何，PM 系统出口处的氚浓度保持在 10-6 Bq/cm3 的数量级。因此，运行数据表明 PM 系统具有比 DF = 103 更高的潜在碎屑因子。