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AssigneeAir Products and Chemicals, Inc.
InventorsTimothy Christopher Golden, Jeffrey Raymond Hufton, Mohammad Ali Kalbassi, Garret C. Lau, Christine Waweru, Christopher James Raiswell, Christopher Suggitt, Daniel Patrick Zwilling
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Hydrogen and carbon monoxide impurities are removed from a dry gas comprising the impurities, wherein the dry gas is at least substantially free of carbon dioxide, by passing the dry gas with sufficient residence time, e.g. at least 1.5 s, through a layer of catalyst comprising a mixture of manganese oxide and copper oxide. The use of expensive noble metal catalysts to remove hydrogen may thereby be avoided. In addition, regeneration of the catalyst using oxygen-containing regeneration gas does not reduce the effectiveness of the catalyst.
A process for removing hydrogen and carbon monoxide impurities from a dry gas comprising said impurities, wherein said dry gas is at least substantially free of carbon dioxide, said process comprising passing said dry gas through a layer of catalyst comprising a mixture of manganese oxide and copper oxide, with sufficient residence time to produce product gas exiting the layer of catalyst comprising the mixture of manganese oxide and copper oxide that is at least substantially free of hydrogen and carbon monoxide, wherein the residence time within the catalyst layer is at least 1.5 s.
A process for removing hydrogen and carbon monoxide impurities from a dry air comprising said impurities, wherein said dry air is at least substantially free of carbon dioxide, said process comprising passing said dry air at a pressure from about 3 bar to about 25 bar (0.3 MPa to 2.5 MPa) and at a temperature from about 0° C. to about 60° C. through a layer of hopcalite catalyst with a residence time within the catalyst layer of at least 1.5 s to produce product gas exiting the layer of hopcalite catalyst that is at least substantially free of hydrogen and carbon monoxide.
An adsorption unit for removing water, carbon dioxide, hydrogen and carbon monoxide impurities from a gas comprising said impurities, said unit comprising an adsorbent bed, said adsorbent bed consisting of:
Dependencies are inferred from the claim text.