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High Purity Hydrogen Production by Metal Hydride System:A Parametric Study Based on the Lumped Parameter Model

Journal of Wuhan University of Technology(Materials Science) 2021年第1期36卷 127-135页

作者： koua koua alain jesus TONG Liang YANG Tianqi XIAO Jinsheng School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Advanced Technology for Automotive Components Hubei Collaborative Innovation Center for Automotive Components Technology and Hubei Research Center for New Energy&Intelligent Connected VehicleWuhan University of TechnologyWuhan 430063China Reliability Engineering Institute School of Energy and Power EngineeringWuhan University of TechnologyWuhan 430070China Hydrogen Research Institute Universitédu QuébecàTrois-RivièresQC G9A 5H7Canada

The simulation of hydrogen purification in a mixture gas of hydrogen/carbon dioxide (H2/CO2) by metal hydride system was *** lumped parameter model was developed and *** validated model was implemented on the software Matlab/Simulink to simulate the present *** simulation results demonstrate that the purification efficiency depends on the external pressure and the venting *** increase in the external pressure and enough venting time makes it possible to effectively remove the impurities from the tank during the venting process and allows to desorb pure *** impurities are partially removed from the tank for low external pressure and venting time during the venting process and the desorbed hydrogen is *** parameters such as the overall heat transfer coefficient,solid material mass,supply pressure,and the ambient temperature influence the purification system in terms of the hydrogen recovery *** increase in the overall heat transfer coefficient,solid material mass,and supply pressure improves the hydrogen recovery rate while a decrease in the ambient temperature enhances the recovery rate.

关键词： hydrogen production hydrogen purification carbon dioxide metal hydride lumped parameter parametric study

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Towards high-efficiency of hydrogen purification in metal hydride

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Progress in Natural Science:Materials International 2023年第3期33卷 301-308页

作者： koua alain jesus koua Jiahe Peng Arramel Arramel Neng Li State Key Laboratory of Silicate Materials for Architectures School of Materials Science and Engineering Wuhan University of Technology Shenzhen Research Institute of Wuhan University of Technology Nano Center Indonesia Jalen Raya PUSPIPTEK South Tangerang School of Chemistry and Environmental Engineering School of Environmental Ecology and Biological Engineering Novel Catalytic Materials of Hubei Engineering Research Center Wuhan Institute of Technology

Recent advancement on hydrogen(H2) retrieval in a mixture gas of H2/CO2based on the metal hydride(MH)technique has attracted numerous interests. In this work, we implement the lumped element model simulation to conduct a theoretical approach on the hydrogen purification process. The influence of orifice geometry and temperature of the tank, and inflow gas rate(fin) is investigated. The results show that the discharge coefficient(DC) is affected by the tank’s orifice geometry. The orifice shape is increasing the value of DC, as a result, the CO2(impurity) outflow rate heightens during the venting process and thereby promoting to obtain a high hydrogen purity. By overcoming the exothermic/endothermic effect in the absorption/desorption step and a proper finselection, we find an improvement in the hydrogen storage capacity(wt%) into MH and consequently the hydrogen recovery rate increases. A sharp improvement in orifice geometry and thermal conditions of the tank,and finenhances the main targeted results(hydrogen purity and recovery rate) and ensures the proper operation of the MH technique.

关键词： Hydrogen purification Metal hydride Discharge coefficient Lumped model simulation Carbon dioxide

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