Hydrogen production method
AssigneePraxair Technology, Inc.
InventorsMinish Mahendra Shah, Raymond Francis Drnevich, Christian Friedrich Gottzmann, Bart Antonie van Hassel
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Abstract
A method of producing hydrogen in which oxygen is separated from an oxygen containing stream to produce an oxygen permeate which is mixed with a hydrocarbon containing stream and steam. Steam, one or more hydrocarbons and permeated oxygen is reacted to produce a synthesis gas. Hydrogen is separated from the synthesis gas by a hydrogen transport membrane to produce a hydrogen permeate which after cooling is used to form a hydrogen product stream. The hydrogen-depleted crude synthesis gas is then combusted to heat the incoming oxygen containing feed.
Claims20
A method of producing hydrogen comprising:
- separating oxygen from a heated oxygen containing feed stream with an oxygen transport membrane to produce an oxygen permeate;
- reacting said oxygen permeate, a hydrocarbon contained in a hydrocarbon containing feed stream, and steam contained in a steam feed stream in partial oxidation and reforming reactions to produce a crude synthesis gas comprising hydrogen, carbon monoxide, water, and carbon dioxide;
- separating said hydrogen from said synthesis gas in a hydrogen transport membrane to produce a hydrogen-depleted crude synthesis gas and a hydrogen permeate;
- forming a product stream containing hydrogen composed of said hydrogen permeate;
- and
- forming the heated oxygen-containing feed stream by combusting a stream of the hydrogen-depleted crude synthesis gas in the presence of an oxygen-containing feed stream.
Dependencies are inferred from the claim text.