Guard layers for rapid cycle pressure swing adsorption devices
AssigneeAir Products and Chemicals, Inc.
InventorsAndre Jason Boulet, Amy Chiu, Brian G. Sellars, Andrea C. Gibbs
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Abstract
Guard layers are employed in the adsorbent beds of rapid cycle pressure swing adsorption (RCPSA) devices to protect the adsorbent therein from certain contaminants (e.g. water vapour). Conventional PSA devices typically pack the guard layer with as much guard material as is practical. In RCPSA devices however, the performance of the guard layer can be improved by using a reduced amount of guard material and increasing access to it. Such embodiments are characterized by guard layers with a channel fraction of greater than 50%.
Claims17
An adsorption bed for a rapid cycle pressure swing adsorption (RCPSA) device comprising a guard layer at the feed end of the bed, the guard layer comprising a laminate sheet comprising a guard adsorbent, wherein the channel fraction of the guard layer is greater than 50%.
A method of protecting the beds in a RCPSA device against contamination, the RCPSA device comprising at least one adsorption bed and a guard layer at the feed end of the bed, and the guard layer comprising a laminate sheet comprising a guard adsorbent, wherein the method comprises employing a channel fraction in the guard layer of greater than 50%.
Dependencies are inferred from the claim text.