A Review of Natural Gas-Hydrogen Blending in Pipeline Supply and Distribution

Abstract

The reduction of greenhouse gases is an assumed objective of the European Community. Thus, in the future, natural gas transport and distribution pipelines will also have to deal with ensuring the transport of mixtures formed between hydrogen, biomethane and natural gas from fossil resources. Considering the increase in the amount of biomethane and the increase in the amount of green hydrogen produced, these fuels’s use in natural gas distribution networks is expected. The article presents an analysis of hydrogen production methods as well as numerical models of hydrogen transportation and mixing with natural gas. Also, there are presented the results obtained at the international level regarding the thresholds for the use of hydrogen in the fossil fuel of natural gas type, as well as the effects produced by the presence of this gas on the transport and supply systems. Numerical models of mixing and dynamic behavior of the new fuel obtained are also analyzed.