Influence of impurities in hydrate formation in H2 pipelines

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2024-11-15 DOI:10.1016/j.ijhydene.2024.11.030

Abbas Rajaei, Nejat Rahmanian

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引用次数: 0

Abstract

The production of hydrogen as an alternative fuel for combating climate change has been promoted recently during the current energy transition. However, hydrogen, whether blue or green, brown, etc, often involves impurities, potentially leading to gas hydrate formation in transmission pipelines. This study investigates the impact of common impurities, such as CH₄, C₂H₆, C₃H₈, and CO₂, on gas hydrate formation in hydrogen-rich pipelines, crucial for ensuring safe operations. Gas hydrates, notorious for causing high risks of blockages in oil and gas pipelines, pose higher risks in hydrogen pipelines, potentially leading to downtime and economic losses. This work predicts hydrate formation under varying conditions using two different simulation software Aspen HYSYS (v.14) and HydraFlash (v.3.5.8). Results reveal that H₂S, C₃H₈, and C₂H₆ notably influence hydrate phase curves, respectively, shifting them to higher temperatures. Notably, Aspen HYSYS exhibits stronger correlations with experimental data for multicomponent systems with high hydrogen concentrations. This study underscores the importance of understanding hydrate formation risks in hydrogen pipelines and provides valuable insights for their safe operation and maintenance.

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杂质对 H2 管道中水合物形成的影响

最近，在当前的能源转型过程中，氢的生产作为应对气候变化的替代燃料得到了推广。然而，氢气（无论是蓝色还是绿色、棕色等）往往含有杂质，有可能在输气管道中形成气体水合物。本研究调查了 CH4、C2H6、C3H8 和 CO2 等常见杂质对富氢管道中气体水合物形成的影响，这对确保安全运行至关重要。气体水合物因在石油和天然气管道中造成堵塞的高风险而臭名昭著，在氢气管道中构成的风险更高，可能导致停机和经济损失。这项研究使用两种不同的模拟软件 Aspen HYSYS (v.14) 和 HydraFlash (v.3.5.8) 预测了不同条件下水合物的形成。结果显示，H2S、C3H8 和 C2H6 分别对水合物相曲线产生显著影响，使其向更高温度移动。值得注意的是，对于氢浓度较高的多组分系统，Aspen HYSYS 与实验数据的相关性更强。这项研究强调了了解氢气管道中水合物形成风险的重要性，并为管道的安全运行和维护提供了宝贵的见解。

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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.