Performance stability in shallow beds in pressure swing...

Details Performance stability in shallow beds in pressure swing... Performance stability in shallow beds in pressure swing...

B - Operations, Transporting

01

D

B01D 53/047 (2006.01) C01B 13/02 (2006.01)

Patent

CA 2604410

PSA process for oxygen production comprising (a) providing an adsorber having a first layer of adsorbent selective for water and a second layer of adsorbent selective for nitrogen, wherein the heat of adsorption of water on the adsorbent in the first layer is s about 14 kcal/mole at water loadings a about 0.05 mmol per gram; (b) passing a feed gas comprising at least oxygen, nitrogen, and water successively through the first and second layers, adsorbing water in the first layer of adsorbent, and adsorbing nitrogen in the second layer of adsorbent, wherein the mass transfer coefficient of water in the first layer is in the range of about 125 to about 400 sec-1 and the superficial contact time of the feed gas in the first layer is between about 0.08 and about 0.50 sec; and (c) withdrawing a product enriched in oxygen from the adsorber.

Processus PSA pour la production d'oxygène comprenant (a) la fourniture d'un adsorbeur avec une première couche d'adsorbent sélectif à l'eau et une deuxième couche d'adsorbent sélectif à l'azote, où la chaleur de l'adsorption d'eau sur l'adsorbent de la première couche est d'environ 14 kcal/mole à des charges d'eau d'environ 0,05 mmol/g; (b) le passage à travers un gaz d'alimentation comprenant au moins de l'oxygène, de l'azote et de l'eau successivement à travers la première et la deuxième couches et adsorbant l'azote dans la deuxième couche de l'adsorbent, où le coefficient de transfert de masse de l'eau de la première couche est de l'ordre de 125 à environ 400 s-1 et le temps de contact superficiel du gaz d'alimentation dans la première couche est d'environ 0,08 à 0,50 s; et (c) l'extraction d'un produit enrichi en oxygène de l'adsorbeur.

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