Study of multi-column cold trap with highly effective recovery rate of tritium water vapor

高效氚水蒸气回收率的多柱冷阱研究

基本信息

批准号：
11558058
负责人：
FUKADA Satoshi
金额：
$ 2.62万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11558058/
关键词：
tritium cold trap fusion reactor mist formation emergency clean-up system thermophoresis gas separation membrane inventory インベントリ

项目摘要

It is one of the most important issues to establish processes for tritium safety confinement and a fuel processing loop of a fusion reactor. In conventional processes for the emergency tritium confinement, catalytic oxidation and zeolite adsorption was the main process. Although the process can satisfy the safety rule for handling radioisotopes in Japanese facilities, the removal of tritium in interstitial sites of adsorbent was very difficult, and so it had a disadvantage of an increasae in tritium inventry. Therefore, it is necessary to improve the conventional catalytic oxidation and water adsorption process for the higher safety confinement of tritium gas and tritium compounds.The polyimede gas separation membrane can make gas volume processed decrease greatly and so make the process simple. In the present study we set up an experimental apparatus which can remove water vapor down to lower than the regulation level of tritium compounds in the environment without any use of adsorben … More t.In order to recover tritium water vapor down to the regulation level it was necessary to solve the problems of the tritium breakthrough of the cold trap and duct choking by deposition on the surfaces. In the first year of the present research, we found out that the tritium breakthrough was caused by mist generation under homogeneous nucleation. With the setup of a two-stages cooling system, we succeeded in operating it without mist formation, in quantitative estimation of frost formation rate on surfaces and so the time of choking, and finally in overall estimation of tritium removal rate. In the second year, we carried out experiments of the two stages tritium removal system comprising an open-column trap cooled by dry ice and glass-packed cold trap cooled by liquid nitrogen in series. The experimental results were presented in international journals such as Separation Science and Technology. We succeeded in the optimal design of the tritium removal system for an ITER-scale fusion reactor. Less

这是建立tri骨安全性限制过程的最重要问题之一，以及融合反应器的燃料处理环。 Handlesese设施的安全规则t具有trip的劣势。建立一个实验设备，该设备可以使水蒸气蒸气降低到大于大于以上以上的速率，而不必使用Adsorben的环境中的调节水平……更多的t.in t.in是为了恢复蒸气蒸汽降低至校长水平是通过在第一个s核中通过沉积的trap trap的trap。在表面上的形成速率和窒息时间的定量估计中，我们在整体上进行了估计，我们进行了两个阶段的t阶段去除系统的实验液体中的氮是在国际科学和技术中提出的。