天然气掺氢技术发展现状及相关标准体系

Development Status and Related Standard System of Natural Gas Hydrogen Blending Technology

新一轮能源革命条件下,大力发展清洁能源、优化能源结构是实现"碳中和"的普遍做法。氢气是清洁、高效、可再生的二次能源,可实现电、气、热等不同能源形式的相互转化,但氢气的输送一直是制约氢能产业链发展的难题。将氢气与天然气掺混,利用在役天然气管道及其输配管网进行输送,是目前可实现安全、高效、大规模和长距离输氢至终端用户的最佳潜在方式。目前掺氢天然气技术仍然不够成熟,将氢气掺入天然气后,气质条件更加复杂,进而对管道、输送设备、燃具等产生了复杂的影响。着重介绍了天然气掺氢技术的发展现状、相关标准体系,讨论了掺氢天然气技术研究中需要进一步解决的问题,并提出了未来发展方向。

Under the conditions of a new round of energy revolution, vigorously developing clean energy and optimizing energy structure is a common practice to achieve "carbon neutrality". Hydrogen is a clean, efficient and renewable secondary energy, which can realize the mutual transformation of different energy forms such as electricity, gas and heat. However, the transmission of hydrogen has always been a difficult problem restricting the development of hydrogen energy industry chain. Mixing hydrogen with natural gas and using the in-service natural gas pipeline and its transmission and distribution network is the best potential way to realize safe, efficient,large-scale and long-distance hydrogen transmission to end users. At present, the technology of hydrogen mixed natural gas is still not mature enough. After hydrogen is mixed into natural gas, the gas quality conditions are more complex, which has a complex impact on pipelines, transmission equipment and gas appliances. Firstly, the development status and relevant standard system of hydrogen doped natural gas technology are introduced, the problems that need to be further solved in the research of this technology are discussed, and the future development direction is put forward.