| Autor: |
Kravchenko, Mykhailo B. |
| Předmět: |
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| Zdroj: |
Journal of Chemistry & Technologies; 2023, Vol. 31 Issue 2, p353-367, 15p |
| Abstrakt: |
The paper describes a new mathematical model of pressure swing adsorption (PSA) in terms of a set of concentration waves passing through an adsorbent bed. The analytical solution for the passage of the concentration eigenwaves through the arbitrary adsorbent bed is derived. This allows analytical solutions to be found for any shaped concentration signal passing through the adsorbent bed. To do this, it is necessary to decompose the input concentration signal into a set of adsorbed layer eigenwaves and obtain a solution for each of the concentration eigenwaves at the exit of that adsorbed layer. Then, all the concentration eigenwave solutions are combined. This is the solution to the problem of passing an arbitrary concentration signal through the adsorbent bed. This approach is suitable for any periodic adsorption process and allows us to take into account the variable concentration of the components at the entrance of the adsorption layer and the non-stationary diffusion in the adsorbent grain. The wave approach to the analysis of periodic adsorption processes explains the effective operation of PSA units. The analysis of the obtained solutions for PSA units designed for the production of oxygen from the air is provided. The conditions necessary for the highly efficient operation of PSA units are formulated. The results are given for different brands of zeolite, allowing the choice of zeolite to be optimized for the given operating conditions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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