Design and commissioning of the exhaust detritiation system for the Large Helical Device
Design and commissioning of the exhaust detritiation system for the Large Helical Device
复制标题
大型螺旋装置废气除铁系统的设计与调试
DOI：
10.1016/j.fusengdes.2017.12.034
复制
发表时间：
2018
影响因子：
1.7
通讯作者：
Sonoi Kazuro
中科院分区：
文献类型：
--
作者：
Tanaka Masahiro;Suzuki Naoyuki;Kato Hiromi;Kondo Tomoki;Yokosawa Minoru;Kawamata Tomonori;Ikeda Mitsuru;Meguro Tsuyoshi;Tanaka Tomonari;Sonoi Kazuro
大型螺旋装置（LHD）是最大的超导磁体螺旋聚变测试装置。在使用 LHD 进行氘等离子体实验期间，氘-氘反应会产生氚和中子。因此，设计并安装了采用传统氧化吸附脱氚的废气脱氚系统（EDS），以确保安全的氚处理和公众接受。 EDS 包括用于氘等离子体实验的真空废气处理系统和用于 LHD 维护的维护吹扫气体处理系统。真空废气处理系统使用分子筛作为干燥单元，而维护吹扫气体处理系统使用聚合物渗透膜。从铲运机接收复杂废气流的关键技术是对管道中的压力进行反馈控制，以保持工艺流量恒定。为了在使用氘气之前验证 EDS 的回收性能和反馈控制系统，我们使用氢气来模拟氚气和来自 LHD 的实际废气流。满足规定的超过 95% 的氢气回收率，并且 EDS 中的反馈控制系统接收了实际的复杂废气流。
The Large Helical Device (LHD) is the largest helical fusion test device with superconducting magnets. During deuterium plasma experiments using the LHD, tritium and neutrons are produced by the deuterium–deuterium reaction. Thus, an exhaust detritiation system (EDS) using conventional oxidation–adsorption tritium removal was designed and installed to ensure safe tritium handling and public acceptance. The EDS consisted of a vacuum exhaust gas processing system for deuterium plasma experiments and a maintenance purge gas processing system for LHD maintenance. The vacuum exhaust gas processing system used molecular sieves as the dryer unit, whereas the maintenance purge gas processing system used a polymer permeable membrane. The key technique for receiving the complex exhaust gas stream from the LHD was feedback control of the pressure in the piping line to keep the process flow constant. To validate the recovery performance and feedback control system for the EDS prior to using deuterium gas, we used hydrogen gas to simulate tritium gas and actual exhaust gas stream from the LHD. The specified hydrogen recovery rate of more than 95% was satisfied and the actual complex exhaust gas stream was received by the proposed feedback control system in the EDS.