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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 23, 2015
Accepted November 6, 2015

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comparative study of zeolite 5A and zeolite 13X in air separation by pressure swing adsorption

Ehsan Javadi Shokroo^† Danial Jafari Farsani¹ Hadiseh Khalilpour Meymandi Nadia Yadollahi

PART-SHIMI Knowledge Based Company, Shiraz, Iran ¹Bidboland Refining Co., NIGC, Bidboland, Iran

ehsan.javadi@hotmail.com

Korean Journal of Chemical Engineering, April 2016, 33(4), 1391-1401(11), 10.1007/s11814-015-0232-6

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Abstract

The performance of zeolites 5A and 13X is numerically investigated in oxygen separation from air by a two-bed PSA system. The effect of operating variables such as adsorption step time, PH/PL ratio and cycle time was investigated on product purity and recovery. The simulation results showed that nitrogen adsorption capacity on zeolite 13X was slightly more than the one on zeolite 5A. In the completely same operating conditions, zeolite 5A had a larger mass transfer zone than zeolite 13X. Therefore, the adsorption and desorption rate of nitrogen on zeolite 5A is less than zeolite 13X. Moreover, for the equal volume of adsorbed nitrogen on both adsorbents, zeolite 5A is more capable rather than zeolite 13X to desorb much more volume of nitrogen at certain time. Furthermore, for achieving oxygen with purity of 96%, utilizing zeolite 5A is more economical than zeolite 13X, when 5.5

Keywords

Pressure Swing Adsorption Zeolite 5A Zeolite 13X Separation Numerical Simulation

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