Comparison of PSA and VSA processes for air separation 


Vol. 10,  No. 2, pp. 101-109, Jun.  2004


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  Abstract

PSA and VSA processes have been used broadly to produce oxygen from ambient air in midium- or small-sized plants. PSA and VSA processes are the separation methods which use difference of amount adsorbed as pressure is changed periodically, but they have the differences in pressurization and regeneration. In this study, the performance of 6-step PSA process was compared with that of 5-step VSA process with respect to purity and recovery. In addition, the effects of each step (pressurization step, adsorption step, and rpessure equalization step) on purity and recovery were investigated. As a result, the VSA process using zeolite 10X showed better performance than the zeolite 5A PSA and zeolite 13X VSA process in comparison with purity, recovery and productivity. And it was enough to apply the vacuum pressure of 200 torr for the VSA, which produced over 90% oxygen with 70% recovery.

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  Cite this article

[IEEE Style]

L. SJ, A. H, J. JG, K. MB, M. JH, B. YS, L. CH, "Comparison of PSA and VSA processes for air separation," Clean Technology, vol. 10, no. 2, pp. 101-109, 2004. DOI: .

[ACM Style]

Lee SJ, Ahn H, Jee JG, Kim MB, Moon JH, Bae YS, and Lee CH. 2004. Comparison of PSA and VSA processes for air separation. Clean Technology, 10, 2, (2004), 101-109. DOI: .

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