Hydrogen injection into liquid PbLi for fusion applications: Fabrication and commissioning

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL International Journal of Hydrogen Energy Pub Date : 2025-03-04 DOI:10.1016/j.ijhydene.2025.02.387

B. Garcinuño, M. Malo, J. Patiño, F. Arranz, I. Fernández-Berceruelo, D. Jiménez-Rey, J. Navas, J.M. García, D. Rapisarda

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Abstract

The self-sufficiency function of a fusion reactor needs experimental validation of the tritium extraction systems at laboratory scale. This implies the employment of dedicated optimized systems for gas solubilization, in order to reproduce the tritium breeding that occurs in the breeding blanket. A novel approach based on forced permeation through a permeable membrane for hydrogen injection into lead-lithium eutectic alloy (PbLi) is proposed.

Two complete functional prototypes have been manufactured using niobium and vanadium as membranes. The leak-tightness of both assemblies has been analyzed and tested, taking into account the huge nominal operation temperature (550 °C), requiring the use of special washers, bolts, and gaskets. Hereafter, the commissioning of the prototypes under deuterium flux has been made in a range of temperatures between 350 °C and 450 °C and gas pressures from 1 mbar to 500 mbar. The gas permeation is in the order of 1E-7 mol/m²s for the vanadium membrane while for the niobium is in the order of 1E-11 mol/m²s.

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用于聚变应用的液体PbLi氢注入：制造和调试

聚变反应堆的自给功能需要在实验室规模上对氚萃取系统进行实验验证。这意味着采用专门的气体增溶优化系统，以便重现发生在繁殖毯中的氚繁殖。提出了一种基于渗透膜强制渗透的铅锂共晶合金注氢新方法。用铌和钒作为膜，已经制造了两个完整的功能原型。考虑到巨大的额定工作温度（550°C），需要使用特殊的垫圈、螺栓和垫圈，对两个组件的密封性进行了分析和测试。此后，原型在氘通量下的调试在350°C至450°C的温度范围和1 mbar至500 mbar的气体压力范围内进行。钒膜的气体渗透率约为1E-7 mol/m2s，铌膜的气体渗透率约为1E-11 mol/m2s。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.