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Received June 15, 2010
Accepted August 3, 2010
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Adsorption dynamics and effects of carbon to zeolite ratio of layered beds for multicomponent gas adsorption
1Fuel Cell Center, Korea Institute of Science & Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Korea 2Major in Chemical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
dkchoi@kist.re.kr
Korean Journal of Chemical Engineering, February 2011, 28(2), 583-590(8), 10.1007/s11814-010-0399-9
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Abstract
To optimize the performance of an adsorption bed, layered beds of activated carbon and zeolite 5A are used for multicomponent gas separation (H2: 72.2%, CO2: 21.6%, CO: 2.03%, CH4: 4.17%). The adsorption dynamic characteristics were studied experimentally and theoretically using layered beds of activated carbon and zeolite 5A at 8 atm adsorption pressure and 16.67 L/min feed rate. Non-isothermal and non-adiabatic models, based on a linear driving force model and Dual-Site Langmuir adsorption isotherm model, were used. As the carbon ratio increased, the average velocity of CH4 wavefront became slow, and wavefronts of CO and CO2 propagated quickly on average.
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Park JH, Kim JN, Cho SH, Kim JD, Yang RT, Chem. Eng. Sci., 53(23), 3951 (1998)
Yang JY, Lee CH, AIChE J., 44(6), 1325 (1998)
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Waldron WE, Sicar, Adsorption 6., 179 (2000)
Ahn HW, Yang JY, Lee CH, Adsorption 7., 339 (2001)
Wakao N, Funazkri T, Chem. Eng. Sci., 33, 1375 (1978)
Kunii D, Smith JM, AIChE J., 6, 71 (1960)
Yagi S, Kunii D, Wakao N, AIChE J., 6, 543 (1960)
Ruthven DM, Farooq S, Knaebel KS, Pressure swing adsorption., VCH Publishers, New York (1994)
Panczyk T, Rudzinski W, Korean J. Chem. Eng., 21(1), 206 (2004)
Mathias PM, Kumar R, Moyer JD, Schork JM, Srinivasan SR, Auvil SR, Talu O, Ind. Eng. Chem. Res., 35(7), 2477 (1996)
Biegler LT, Jiang VG, Sep. Purif. Res., 33, 1 (2004)
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Lee CH, Yang JY, Ahn HW, AIChE J., 45(3), 535 (1999)
Huang CC, Fair JR, AIChE J., 34, 1861 (1988)
