Feed gas contaminant removal in ion transport membrane systems
AssigneeAir Products and Chemicals, Inc.
InventorsRichard Paul Underwood, Alexander Makitka, III, Michael Francis Carolan
Life of this patent
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Abstract
An oxygen ion transport membrane process wherein a heated oxygen-containing gas having one or more contaminants is contacted with a reactive solid material to remove the one or more contaminants. The reactive solid material is provided as a deposit on a support. The one or more contaminant compounds in the heated oxygen-containing gas react with the reactive solid material. The contaminant-depleted oxygen-containing gas is contacted with a membrane, and oxygen is transported through the membrane to provide transported oxygen.
Claims12
An oxygen ion transport membrane process comprising:
- (a) contacting a heated oxygen-containing gas with a reactive solid material, the heated oxygen-containing gas comprising oxygen and one or more contaminant compounds wherein at least one of the one or more contaminant compounds in the heated oxygen-containing gas is CrO2(OH)2, Si(OH)4, WO2(OH)2, CrO)3, oxides of molybdenum, or oxy-hydroxides of molybdenum, the reactive solid material provided as a deposit on a support wherein the reactive solid material comprises one or more compounds selected from the group consisting of magnesium oxide, calcium carbonate, strontium carbonate, zinc oxide, strontium oxide, barium oxide, barium carbonate, and alkaline-earth-containing perovskites, reacting the one or more contaminant compounds in the heated oxygen-containing gas with the reactive solid material under reaction conditions sufficient to react the one or more contaminant compounds with the reactive solid material thereby forming a contaminant-depleted oxygen-containing gas and reacted solid material;
- (b) contacting the contaminant-depleted oxygen-containing gas with a first surface of a membrane comprising mixed conducting multicomponent metallic oxide, and transporting oxygen through the membrane to a second surface of the membrane to provide transported oxygen.
Dependencies are inferred from the claim text.