초록 ▼

The invention is a process for recovering oxygen from an oxygen-containing gaseous mixture containing one or more components selected from water, carbon dioxide or a volatile hydrocarbon which process utilizes ion transport membranes comprising a multicomponent metallic oxide containing barium. The

The invention is a process for recovering oxygen from an oxygen-containing gaseous mixture containing one or more components selected from water, carbon dioxide or a volatile hydrocarbon which process utilizes ion transport membranes comprising a multicomponent metallic oxide containing barium. The process utilizes a temperature regime which overcomes problems associated with degradation of barium-containing multicomponent oxides caused by carbon dioxide.

대표청구항 ▼

A process for recovering oxygen from an oxygen-containing gaseous mixture containing one or more components selected from water, carbon dioxide or a volatile hydrocarbon, the process which comprises the steps of: (a) delivering the oxygen-containing gaseous mixture into a first gas compartment which

A process for recovering oxygen from an oxygen-containing gaseous mixture containing one or more components selected from water, carbon dioxide or a volatile hydrocarbon, the process which comprises the steps of: (a) delivering the oxygen-containing gaseous mixture into a first gas compartment which is separated from a second gas compartment by an ion transport membrane comprising a multicomponent metallic oxide containing barium, but excluding yttrium; (b) establishing a positive oxygen partial pressure difference between the first and second gas compartments by producing an excess oxygen partial pressure in the first gas compartment and/or by producing a reduced oxygen partial pressure in the second gas compartment; (c) contacting the oxygen-containing gaseous mixture with the ion transport membrane at a temperature greater than about 810°C. to separate the oxygen-containing gaseous mixture into an oxygen permeate stream and an oxygen-depleted gaseous stream; and (d) recovering the oxygen permeate stream.