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

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4. Regeneration coefficient and separation efficiency

We have already seen that, by adjusting regeneration parameters such as intermediate pressure P _int and elution coefficient PF, as well as the number of equilibrations NEQ of a PSA cycle, it is possible to find the optimum performance of a PSA.

The aim of this optimization work is to find the key parameter for optimizing PSA cycles, known as the Regeneration Factor (RF), which defines the ratio between the actual flow rates and volumes of the compound to be produced, leaving the regeneration stages and entering the adsorption phase:

R F = \frac{Q_{r é s i d u a i r e}}{Q_{a l i m e n t a t i o n}} \frac{y_{r e s i d u a i r e}^{p}}{y_{a l i m e n t a t i o n}^{p}} \frac{P_{A D S}}{P_{R E G}}

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Regeneration coefficient and separation efficiency

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Typical performance of nitrogen kinetic PSAs

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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