Article | REF: J3607 V1

Gas purification by the PSA (Pressure Swing Adsorption) process - Design and prospects

Author: Guillaume de SOUZA

Publication date: December 10, 2009 | Lire en français

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1. Notions of separation efficiency and productivity

PSA purification processes are generally fed with at least two different gaseous compounds, one of which is considered to be the gas to be produced.

Whether it's the most adsorbable gas or the least adsorbable gas, the separation efficiency of a PSA unit for compound i is defined by the equation (figure 1 ):

R e n d t (i) = \frac{Q_{p r o d u i t} y_{p r o d u i t}^{i}}{Q_{a l i m e n t a t i o n} y_{a l i m e n t a t i o n}^{i}}

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Optimal integration of a PSA cycle into its pressure environment

Bibliography

(1) - YANG (R.T.) - Gas separation by adsorption processes. - Butterworths, Boston (1987).
(2) - BIRD (R.B.), STEWART (W.E.), LIGHTFOOT (E.N.) - Transport phenomena. - John Wiley & sons (1960).
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