Separation of multicomponent gas mixtures by selective...

Details Separation of multicomponent gas mixtures by selective... Separation of multicomponent gas mixtures by selective...

B - Operations, Transporting

01

D

B01D 53/04 (2006.01) B01D 53/047 (2006.01) C01B 3/56 (2006.01)

Patent

CA 2061463

Multicomponent gas mixtures containing: (1) hydrogen as the primary component, (2) a secondary key component that is more strongly sorbed by the adsorbent than hydrogen, and (3) a minor quantity of one or more dilute tertiary components less strongly sorbed than the secondary key component, are subject to selective adsorption in an adiabatic pressure swing adsorption (PSA) cycle for the separate recovery of high purity hydrogen and the secondary component. A given example is the treatment of the effluent gas from a shift converter in a hydrocarbon reformer plant, wherein hydrogen and carbon dioxide are separately recovered as key components substantially freed of minor dilute components such as methane, carbon monoxide and nitrogen.

Des mélanges gazeux à plusieurs composants, contenant : 1) de l'hydrogène comme composant primaire, 2) un second composé clé qui est plus fortement sorbé par l'adsorbant que l'hydrogène et 3) une quantité mineure d'un ou de plusieurs composants tertiaires dilués qui sont moins fortement sorbés que le composant clé secondaire, sont soumis à une adsorption sélective dans un cycle adiabatique d'adsorption modulée en pression (A.M.P.) pour la récupération distincte d'hydrogène à haut degré de pureté et du composant secondaire. On donne en exemple le traitement du gaz effluent provenant d'un convertisseur à la vapeur d'eau dans une usine de reformage d'hydrocarbures au cours duquel l'hydrogène et le dioxyde de carbone (CO2) sont récupérés séparément comme des composants clés considérablement débarassés de composants mineurs dilués tels que le méthane, l'oxyde de carbone (CO) et l'azote.

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