Back to results
US 10,882,742 B2Granted
Process for separation of hydrogen and oxygen
AssigneeSabic Global Technologies B.V.
InventorsNasser Ali Aldalaan, Abdulaziz M. Al-Jodai, Mubarik Ali Bashir
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention are directed to methods, processes, and systems for safely and reliably purifying hydrogen from a gas mixture containing hydrogen and oxygen.
Claims15
A process for separating hydrogen and oxygen from a gas mixture that is produced from photocatalytic splitting of water comprising:
- (a) contacting a water source with a water splitting photocatalyst, and exposing the water and photocatalyst to light under conditions that splits water into hydrogen and oxygen forming a feed gas for separation;
- (b) separating hydrogen and oxygen from the feed gas by
- (i) mixing the feed gas with a hydrogen stream, reducing the combustibility of the feed source and forming a feed source;
- (ii) compressing the feed source to a pressure of at least 10 bars forming a compressed feed source;
- (iii) exposing the compressed feed source to an adsorption medium that differentially adsorbs oxygen producing an enriched hydrogen product gas and an adsorbed oxygen source;
- (iv) separating the enriched hydrogen stream and the adsorbed oxygen source;
- and
- (v) desorbing the adsorbed oxygen from the adsorbed oxygen source by reducing the pressure on the adsorption medium forming an oxygen enriched product gas;
- (c) collecting, storing, and/or utilizing a hydrogen product gas and an oxygen product gas.
6 more elements
Dependencies are inferred from the claim text.