The purification of hydrogen isotopes expelled from nuclear fusion reactors by a combined process. (7th May 2020)

• Record Type: Journal Article
• Authors: Yang, Mingyang; Zhou, Junbo; Gao, Liping
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 25(2020)
• Page Start: 13596
• Page End: 13600
• Publication Date: 2020-05-07
• Subjects: Cryogenic adsorption -- Nitrogen impurity -- Hydrogen isotopes -- Deoxygenation -- Separation; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.04.189
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Hydrogen isotope gases expelled from nuclear fusion reactors can be purified by a process combining catalytic deoxygenation and cryogenic adsorption (77.4 K). In the present work, a novel purification process design is proposed. The experimental result shows that the oxygen volume fraction of the purified hydrogen isotopes is below 0.1 × 10 − 6 with the nitrogen volume fraction less than 1 × 10 − 6 . And it was discovered that the waste amount of hydrogen isotopes after purification is only 100–300 ppm which occupies just 10–30% of the amount of nitrogen impurity through the theory calculation. Therefore, the impurity content of hydrogen isotopes is removed sufficiently by the combined process and the proposed process for purification of the exhaust gases expelled from nuclear fusion reactors can be used as an alternative to the traditional method. Highlights: Impurities are removed in hydrogen isotopes. Catalytic deoxygenation & cryogenic absorption is combined treating impurities. DX-30 shows a good adsorption property (77.4 K) for N2 in hydrogen isotopes. The hydrogen isotopes loss occupies only 10%–30% of the amount of N2 impurity.