Thanks to the advantages of cleanliness, high efficiency,
extensive
sources, and renewable energy, hydrogen energy has gradually become
the focus of energy development in the world’s major economies.
At present, the natural gas transportation pipeline network is relatively
complete, while hydrogen transportation technology faces many challenges,
such as the lack of technical specifications, high safety risks, and
high investment costs, which are the key factors that hinder the development
of hydrogen pipeline transportation. This paper provides a comprehensive
overview and summary of the current status and development prospects
of pure hydrogen and hydrogen-mixed natural gas pipeline transportation.
Analysts believe that basic studies and case studies for hydrogen
infrastructure transformation and system optimization have received
extensive attention, and related technical studies are mainly focused
on pipeline transportation processes, pipe evaluation, and safe operation
guarantees. There are still technical challenges in hydrogen-mixed
natural gas pipelines in terms of the doping ratio and hydrogen separation
and purification. To promote the industrial application of hydrogen
energy, it is necessary to develop more efficient, low-cost, and low-energy-consumption
hydrogen storage materials.