Détermination expérimentale du courant minimal d’inflammation de mélanges méthane/hydrogène contenant jusque 20 % d’hydrogène

Abstract : The European Union aims to reduce its carbon emission by up to 80% until 2050. To reach this objective, a possible way consists in injecting hydrogen - produced from renewable energy - into the natural gas network, at a concentration of up to 20%. But hydrogen is more easily ignitable than natural gas. Therefore, use of such a hydrogen/natural gas blend in the existing natural gas network shall be carefully assessed. Especially, are the equipment already used in the natural gas network compatible with this type of blends? The applicable standard for classification of ignition sensitivity prescribes a classification of such hydrogen/methane blends in the same group as the natural gas for a concentration of hydrogen up to 25%. To investigate this issue, Ineris experimentally determined the Minimum Ignition Current (MIC) of hydrogen/methane blends, containing from 2% to 20% of hydrogen. The MIC is one of the two parameters used to classify a gas in its ignition sensibility group. This work demonstrates the need of a modification of the classification criteria defined in the applicable standard.
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Jérôme Lesage, Bruno Debray, Agnès Janes. Détermination expérimentale du courant minimal d’inflammation de mélanges méthane/hydrogène contenant jusque 20 % d’hydrogène. Rapport Scientifique INERIS, 2017, 2016-2017, pp.24-25. ⟨ineris-01869657⟩

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