Enabling the injection of hydrogen in high-pressure gas grids: Investigation of the impact on materials and equipment

Javier Sánchez-Laínez*, Alberto Cerezo, Ma Dolores Storch de Gracia, Jorge Aragón, Ekain Fernandez, Virginia Madina, Vanesa Gil*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Green hydrogen is a renewable gas that can help to reach the goal of decarbonizing the energy sector. The use of the natural gas grid for seasonal storage and transport of hydrogen needs previous assessment of its tolerance, ensuring safe and viable operation. In this work, the tolerance of the most typical material pipelines and key elements of high-pressure gas grids to the transport of 20 mol% hydrogen blends at 80 barg has been investigated at pilot scale. For this, the experimental campaign carried out at a testing platform replicating a high-pressure gas grid lasted 3000 h. The tightness of different kind of valves led to hydrogen losses below 1 Nml·h−1. No embrittlement or other kind of damage was found on these valves or the different parts of the equipment (regulator, flowmeter) tested. C-ring, 4pb and CT-WOL specimens have been prepared from carbon steel pipes (API5L Gr X42 to X70), showing no damage after exposure to hydrogen. H2/CH4 deblending has also been successfully achieved using Pd-based membrane technology, obtaining a high-purity separated streams.

Original languageEnglish
Pages (from-to)1007-1018
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume52
DOIs
Publication statusPublished - 2 Jan 2024

Funding

This project has received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking (now Clean Hydrogen Partnership) under Grant Agreement No. 875091 ‘HIGGS’. This Joint Undertaking receives support from the European Union's Horizon 2020 Research and Innovation program, Hydrogen Europe and Hydrogen Europe Research . Financial support from the T13-20D (the Aragón Government and the ESF) is also gratefully acknowledged.

FundersFunder number
Hydrogen Europe and Hydrogen Europe Research
European Social Fund Plus
Horizon 2020
Gobierno de Aragón

    Keywords

    • H2/NG blend
    • High-pressure gas grid
    • Hydrogen injection
    • Retrofitting
    • Transmission

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