天然气管道掺氢输送研究现状与分析  

Research status and analysis of hydrogen-blended natural gas transportation in natural gas pipelines

作　　者：高岳[1] 朱红钧[1] 唐堂 李佳男 陈泉宇 刘文丽 GAO Yue;ZHU Hongjun;TANG Tang;LI Jianan;CHEN Quanyu;LIU Weni(School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,Sichuan,China)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500

出　　处：《低碳化学与化工》2024年第3期118-128,共11页Low-Carbon Chemistry and Chemical Engineering

基　　金：四川省杰出青年科学基金(2023NSFSC1953)。

摘　　要：天然气管道掺氢输送是实现大规模、远距离和低成本氢气运输的手段之一,但氢气掺入天然气管道给管线运行工况、安全维护等带来了不容忽视的影响,具有一定的安全隐患。为此,围绕国内外天然气管道掺氢输送的技术研究与工程应用现状,讨论了影响天然气管道掺氢安全输送的主要因素,即掺氢引起的天然气物性改变、氢致失效和掺混不均,以及掺氢管道泄漏扩散和燃爆的安全问题。结果表明,天然气掺氢后,对现有管材提出了新要求,需开展相关实验以揭示氢致失效机理,掺氢天然气管道停输后是否发生气体分层与管道是否发生氢致失效密切相关。掺氢天然气管道泄漏扩散及自燃的安全范围、发生燃爆所需的最小掺氢比及燃爆机理尚不明晰,实验研究与实际运营存在差距。针对天然气管道掺氢输送的规范、标准及相关监管政策仍处于发展阶段,需要结合系统的研究数据及实践进一步完善。以上结果明晰了掺氢输送存在的风险,可为大规模掺氢混输的工程推广与实际运营提供参考。Hydrogen-blended natural gas transportation is one of the ways to achieve large-scale,long-distance and low-cost hydrogen transportation,but the blending of hydrogen into natural gas pipelines significantly affects the operation condition and safety maintenance of natural gas pipelines,posing potential safety risks.Therefore,based on the current domestic and foreign research and engineering applications status of hydrogen-blended natural gas transportation in recent years,the main factors affecting safe hydrogen-blended natural gas transportation in natural gas pipelines,including the change of natural gas physical properties caused by hydrogen blended,hydrogen-induced failures and uneven mixing,as well as the safety problems including leakage,diffusion and detonation were discussed.The analysis indicates that new requirements are put forward for the pipe materials with the hydrogen blended.Thus,relevant systematic experiments are needed to reveal the mechanism of hydrogen-induced failures.Whether gas stratification occurs after the shutdown of hydrogen-blended natural gas pipelines is closely related to whether the pipeline is hydrogen-induced failure.The safety range of diffused spontaneous combustion,the minimum hydrogen blending ratio and the mechanism of detonation are still unclear,and the gap between experiments and practice is significant.The establishment of standards and associated regulatory policies for hydrogen-blended natural gas pipelines is still in the development stage,so improvement is required based on the systematic research data and practical implementation.The above results clarify the risks related hydrogen-blended natural gas transportation and can provide reference for the promotion and practical operation of large-scale hydrogen-blended natural gas transportation projects.

关 键 词：掺氢天然气 管道输送 掺氢比 泄漏扩散 燃爆 

分 类 号：TE832[石油与天然气工程—油气储运工程]