Process for removing oxygen from a hydrogen stream
AssigneeUop LLC
InventorsBradley P. Russell, William Macallan Cady, Stephen Caskey, Nasser Khazeni
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Abstract
An adsorption process is provided to remove oxygen from a hydrogen stream through the use of a copper material in combination with layers of adsorbent to remove water and nitrogen from a hydrogen stream. This process is particularly useful for purification of hydrogen product gas from water electrolyzers with the hydrogen product gas having greater than 99.9 mol % purity.
Claims20
A process for producing a high-purity hydrogen gas stream from a gaseous feed stream comprising hydrogen and oxygen and at least one of water and nitrogen, said process comprising sending said feed stream through an adsorbent bed comprising a catalyst material selected from copper, palladium or platinum, and then purging said adsorbent bed in a counter-current direction with a purge stream comprising a hydrogen-rich gas that is substantially free of oxygen.
A system for treating a gaseous feed stream wherein said system comprises at least two adsorbent beds, a gas inlet and a gas outlet wherein said adsorbent beds comprise at least three layers of adsorbent material wherein a first layer adjacent to said inlet comprises a dehydration adsorbent, a second layer comprises a catalyst comprising a copper material and a third layer comprises a dehydration adsorbent.
Dependencies are inferred from the claim text.