What is the minimum setting for PSA adsorption time at which it makes no sense to lower it further?

2010-09-18View Original

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What is the minimum setting for PSA adsorption time at which it makes no sense to lower it further?

Reply #22010-09-18

With all other conditions unchanged, the adsorption time is closely related to the purity of the product gas. Each adsorbent is designed to absorb different \"impurity\" gases, and the amount of gas that can be absorbed is limited due to the finite quantity of adsorbent available. The proportion of each adsorbent used is determined based on an analysis of the components in the mixture, with the aim of enabling all adsorbents to reach saturation simultaneously; in practice, this occurs at different times. We can assume that the adsorbent that reaches saturation fastest takes time Tmin, and therefore a adsorption time shorter than Tmin has no impact on the purity of the product.

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