Performance stability in rapid cycle pressure swing...

Details Performance stability in rapid cycle pressure swing... Performance stability in rapid cycle pressure swing...

B - Operations, Transporting

01

D

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

Patent

CA 2604637

Pressure swing adsorption process for producing oxygen comprising (a) providing at least one adsorber vessel having a first layer of adsorbent adjacent the feed end of the vessel and a second layer of adsorbent adjacent the first layer, wherein the surface area to volume ratio of the first layer is in the range of about 5 to about 11 cm-1; (b) introducing a pressurized feed gas comprising at least oxygen, nitrogen, and water into the feed end, adsorbing at least a portion of the water in the adsorbent in the first layer, and adsorbing at least a portion of the nitrogen in the adsorbent in the second layer, wherein the superficial contact time of the pressurized feed gas in the first layer is between about 0.08 and about 0.50 sec; and (c) withdrawing a product gas enriched in oxygen from the product end of the adsorber vessel.

Procédé d'adsorption modulée en pression permettant de produire de l'oxygène; le procédé consiste : a) à fournir au moins une cuve d'adsorption comportant une première couche d'adsorbant adjacente à l'orifice d'entrée de la cuve, et une seconde couche d'adsorbant adjacente à la première couche, où le rapport surface/volume de la première couche est de l'ordre d'environ 5 à environ 11 cm-1; b) à introduire un gaz sous pression renfermant au moins de l'oxygène, de l'azote et de l'eau dans l'orifice d'entrée, à adsorber au moins une partie de l'eau dans l'adsorbant de la première couche, et au moins une partie de l'azote dans l'adsorbant de la seconde couche, le temps de contact du gaz sous pression avec la surface dans la première couche étant d'environ 0,08 à environ 0,50 sec; c) à retirer le gaz enrichi en oxygène obtenu à la sortie de la cuve d'adsorption.

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