4.7 Article

Why turquoise hydrogen will Be a game changer for the energy transition

期刊

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 47, 期 61, 页码 25831-25848

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.05.299

关键词

Hydrogen; Thermal plasma; Methane pyrolysis; Life cycle assessment; Natural gas; Renewable natural gas

资金

  1. ERC Grant Surface - Confined fast modulated Plasma for process and Energy intensification (SCOPE) from the European Commission [810182]

向作者/读者索取更多资源

This study assesses the life cycle of hydrogen produced from methane pyrolysis via thermal-plasma, and finds that the carbon-intensity of the hydrogen produced using this method is 88.3-90.8% lower than that of grey hydrogen. Furthermore, with the use of renewable natural gas, the carbon-intensity can even reach negative values, making turquoise hydrogen a potential game-changer for the energy transition.
With hydrogen being promoted as a promising energy vector for a decarbonized world, low -carbon hydrogen production methods are of interest to replace the current Steam-Methane -Reforming production of & ldquo;grey & rdquo; hydrogen. While existing studies focus on the life-cycle -assessment of green hydrogen produced by water electrolysis, an alternative, which has attracted growing interest due to a much lower energy intensity (10-30 kWh/kgH2 < 50-60 kWh/kgH2), is turquoise hydrogen produced by the pyrolysis of methane. Specifically, this study conducts a life-cycle-assessment on hydrogen produced by the pyrolysis of methane via thermal-plasma. A sensitivity analysis is also conducted on the environmental-metric time -horizon and on the methane emissions rates. Results show that the carbon-intensity of hydrogen produced using this novel method is 88.3-90.8% lower than that of grey hydrogen. Furthermore, using renewable-natural-gas with a feedstock percentage as low as 8-18% leads to a negative hydrogen carbon-intensity (reaching-4.09 to-10.40 kgCO2e/kgH2 at 100% renewable natural gas), the lowest compared to grey, blue, and green hydrogen, making tur-quoise hydrogen a game-changer for the energy transition. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

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