✍ Scribed by Lingai Luo; Michel Bailly
No coin nor oath required. For personal study only.
Thermal aspects of gas adsorption processes. The adsorption of gases is an exothermal phenomenon, and fixed bed adsorption operations produce high thermal effects. Similarly, applying temperature changes to a process can modify adsorption. The purpose of this paper is to illustrate the basic features of non-isothermal adsorption, the most salient of which is the effect of relative velocities of heat and concentration waves. It is shown that there may exist a temperature at which a reversal occurs in the order of those velocities. A simple purification process is suggested, based on the temperature modulation of the aas mixture fed to the column. Examples are calculated with data corresponding to carbon dioxide adsorption on 13X kolecular sieves.
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