Guard layers for rapid cycle pressure swing adsorption devices

Details Guard layers for rapid cycle pressure swing adsorption devices Guard layers for rapid cycle pressure swing adsorption devices

B - Operations, Transporting

01

D

B01D 53/047 (2006.01) B01J 8/02 (2006.01) B01J 19/02 (2006.01) B01J 20/08 (2006.01)

Patent

CA 2672653

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%.

Des couches de protection sont utilisées dans des lits d'adsorption de dispositifs à adsorption modulée en pression à cycle rapide (RCPSA) afin de protéger l'adsorbant qu'ils contiennent contre certains contaminants (p.ex., la vapeur d'eau). Les dispositifs RCPSA traditionnels sont dotés d'ordinaire de couches de protection qui comportent autant de matériau de protection qu'il est jugé pratique. Cependant, dans des dispositifs RCPSA il est possible d'améliorer les performances de la couche de protection en utilisant une quantité moindre de matériaux de protection et en améliorant l'accès à ces derniers. Ces modes de réalisation sont caractérisés par des couches de protection possédant une fraction de canal supérieure à 50 %.

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