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Simulation of Hydrogen Drying via Adsorption in Offshore Hydrogen Production

Author

Listed:
  • Katharina Dik

    (Fraunhofer Institute for Chemical Technology ICT, Joseph-von-Fraunhofer Straße 7, 76327 Pfinztal, Germany)

  • Christian Teicht

    (Fraunhofer Institute for Chemical Technology ICT, Joseph-von-Fraunhofer Straße 7, 76327 Pfinztal, Germany)

Abstract

According to the international standard ISO 14687:2019 for hydrogen fuel quality, the maximum allowable concentration of water in hydrogen for use in refueling stations and storage systems must not exceed 5 µmol/mol. Therefore, an adsorption purification process following the electrolyzer is necessary. This study numerically investigates the adsorption of water and the corresponding water loading on zeolite 13X BFK, based on the mass flows entering the adsorption column from three 5 MW electrolyzers coupled to a 15 MW offshore wind turbine. As the mass flow is influenced by wind speed, a direct comparison between realistic wind speeds and adsorption loading is presented. The presented numerical discretization of the model also accounts for perturbations in wind speed and, consequently, mass flows. In addition, adsorption isobars were measured for water on zeolite 13X BFK within the required pressure and temperature range. The measured data was utilized to fit parameters to the Langmuir–Freundlich isotherm.

Suggested Citation

  • Katharina Dik & Christian Teicht, 2025. "Simulation of Hydrogen Drying via Adsorption in Offshore Hydrogen Production," Energies, MDPI, vol. 18(18), pages 1-20, September.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:18:p:4906-:d:1750025
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