关于低温液体储罐真空层中氢气吸附剂性能的技术经济分析

IF 8.1 2区 工程技术 Q1 CHEMISTRY, PHYSICAL
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引用次数: 0

摘要

对低温液体燃料日益增长的需求对储运技术提出了严峻的挑战。低温液体储罐中会出现氢气泄漏,因为氢气分子可以通过微孔缓慢扩散,这大大削弱了真空绝热层的性能。目前已开发出各种具有高吸附能力的材料来抑制这一现象,但很少有研究关注储罐内部的工作性能,从而导致吸附剂用量过多。本研究旨在分析氢气吸附剂在液氢(LH)和液态天然气(LNG)储罐中的吸附性能和经济效益。结果表明,银分子筛(SMS)在长期低温液体储存中是一种经济有效的吸附剂。LNG 罐需要更多的常温吸附剂才能保持与 LH 罐相似的性能。对于 250 立方米的 LH 储罐,使用 SMS 的最佳质量为 700 克至 800 克,而对于 250 立方米的 LNG 储罐,最佳用量为 900 克至 1000 克。过量使用氢气吸附剂并不能有效改善低温液体储罐的性能。这些研究结果可能有助于未来低温液体储罐的真空维护。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Techno-economic analysis on the performance of hydrogen adsorbents in the vacuum layer of cryogenic liquid storage tank

The increasing demands for cryogenic liquid fuels pose serious challenges to storage and transportation technology. Hydrogen leakage occurs in cryogenic liquid storage tanks since hydrogen molecules can slowly diffuse through microscopic pores, which greatly weakens the performance of vacuum insulation layer. Various materials with high adsorption capacity have been developed to inhibit this phenomenon while few research focuses on the working performance inside tanks, which leads to the excessive dosage of adsorbents. This work aims to analyze the adsorption performance and economic benefits of hydrogen adsorbents in liquid hydrogen (LH) and liquid natural gas (LNG) tank, respectively. The results indicate that silver molecular sieve (SMS) is a cost-effective adsorbent in the long-term cryogenic liquid storage. LNG tank needs more ambient temperature adsorbents to maintain a similar performance to LH tank. For a 250 m3 LH tank, the optimal mass by using SMS ranges from 700 g to 800 g while a dosage of 900–1000 g is the best for a 250 m3 LNG tank. The excessive use of hydrogen adsorbents can't effectively improve the performance of cryogenic liquid storage tanks. These research findings may help the future vacuum maintenance in cryogenic liquid storage tanks.

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来源期刊
International Journal of Hydrogen Energy
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.
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