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http://dx.doi.org/10.7316/KHNES.2021.32.4.197

Pressure Swing Adsorption Based Hydrogen Purification Vessel 3D Modeling and Feasibility Study  

CHA, YOHAN (Department of Mechanical Engineering, Inha University Graduate School, Inha University)
CHOI, JAEYOO (Department of Mechanical Engineering, Inha University Graduate School, Inha University)
JU, HYUNCHUL (Department of Mechanical Engineering, Inha University Graduate School, Inha University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.32, no.4, 2021 , pp. 197-204 More about this Journal
Abstract
Pressure swing adsorption is a purification process which can get pure hydrogen. The purification process is composed of four process: compression, adsorption, desorption and discharge. In this study the adsorption process was simulated by using the Fluent and validated with experimental results. A gas used in experiment is composed of H2, CO2, CH4, and CO. Adsorption process conducted under 313 kelvin and 3 bar and bituminous-coal-based (BPL) activated carbon was used as the adsorbent. Langmuir model was applied to explain the gas adsorption. And diffusion of all the gases was controlled by micro-pore resistances. The result shows that, the most adsorbed gas was carbon dioxide, followed by methane and carbon monoxide. And carbon monoxide took the least amount of time to reach the maximum adsorption amount. The molar fraction of the off-gas became the same as the molar fraction of the gas supplied from the inlet after adsorption reached the equilibrium.
Keywords
Pressure swing adsorption(PSA); Multicomponent-gas; Adsorption; Purification; Hydrogen;
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