| 摘要 |
<p>PURPOSE:To prevent leakage of single substance of hydrogen isotope to the outside of a system and to elevate safety of environment by cracking carbon compds. and nitrogen compds. removed and recovered in a main system in a section other than the main system. CONSTITUTION:Gaseous single substance of hydrogen isotope is introduced into an oxygen removing stage 12 from an inlet 11, where the hydrogen isotope is allowed to react with oxygen at 100-200 deg.C in the presence of a catalyst to generate steam, which is removed in a dehumidifying stage 13. The residual gas is introduced into an impurity removing stage 14 where impurities such as carbon compds. or nitrogen compds. are removed by allowing the gas to contact with an adsorbent cooled to cryogenic temp., and the purified hydrogen isotope is discharged from an outlet 15. Impurities removed in the stage 14 are introduced into a cracking stage 16 where it is decomposed at 400- 500 deg.C in the presence of a catalyst, and the hydrogen isotope in the impurities are oxidized to form steam, which is fed to a moisture recovering stage 17 together with a part of the steam introduced from a stage 13 and recovered. Further, another part of the steam from the stage 13 is fed to a water decomposing stage 18, where it is decomposed and the single substance of the hydrogen isotope is fed back to the inlet 11, and the oxygen is circulated to the stage 16.</p> |
