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Adsorption Dynamics of H2/CO2, H2/CO, H2/CH4 Mixtures in Li-X Zeolite Bed  

Park, Ju-Yong (Energy & Environment Research Division, Korea Institute of Science and Technology)
Yang, Se-Il (Energy & Environment Research Division, Korea Institute of Science and Technology)
Choi, Do-Young (Energy & Environment Research Division, Korea Institute of Science and Technology)
Jang, Seong-Cheol (Energy & Environment Research Division, Korea Institute of Science and Technology)
Lee, Chang-Ha (Department of Chemical and Biomolecular Enginnering, Yonsei University)
Choi, Dae-Ki (Energy & Environment Research Division, Korea Institute of Science and Technology)
Publication Information
Korean Chemical Engineering Research / v.46, no.4, 2008 , pp. 783-791 More about this Journal
Abstract
The dynamic characteristics of adsorption using an adsorption bed packed with Li-X zeolite (UOP) were studied through the breakthrough experiments of $H_2/CH_4$ (90:10 vol%), $H_2/CO$ (90:10 vol%) and $H_2/CO_2$ (80:20 vol%) mixtures. Effects of feed flow rate (6.24~10.24 LPM) and adsorption pressure (6.1 bar~10.1 bar) in the Li-X zeolite bed with 2.7 cm of inside diameter and 80 cm of bed length were observed. The smaller feed rate or the higher operating pressure, resulted in the longer of the breakthrough time and the breakthrough curve have tailing due to temperature variance in the bed. The adsorption dynamics of the Li-X zeolite bed were predicted by using LDF model with feed flow and pressure dependent diffusivity. The prediction and experimental data were analyzed with a nonisothermal, nonadiabatic model, dual-site langmuir (DSL) isotherm
Keywords
Adsorption Dynamic; Hydrogen Mixture Li-X Zeolite; Dual-Site Langmuir;
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Times Cited By KSCI : 5  (Citation Analysis)
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