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US 2003/0113257 A1Published application
Method for producing hydrogen
AssigneePraxair Technology, Inc.
InventorsHisashi Kobayashi, Thomas Gilbert Halvorson
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Abstract
A method for producing hydrogen in an energy efficient manner wherein steam and methane are reacted to produce synthesis gas from which hydrogen is recovered, and heat employed in the process is recovered using a defined regenerative bed system.
Claims12
A method for producing hydrogen comprising:
- (A) reacting steam with a hydrocarbon feed stream in a heated regenerative reactor bed to produce hot synthesis gas and a cooled regenerative reactor bed, and cooling the hot synthesis gas in a gas cooler to produce cooled synthesis gas;
- (B) passing the cooled synthesis gas through an adsorber containing adsorbent, adsorbing synthesis gas species other than hydrogen onto the adsorbent, and recovering hydrogen from the adsorber;
- (C) desorbing adsorbed gas species from the adsorbent, and combusting the desorbed gas species with oxidant to produce hot combustion gas;
- and
- (D) passing the hot combustion gas through the said cooled regenerative reactor bed to produce cooled combustion gas and said heated regenerative reactor bed.
2 more elements
Dependencies are inferred from the claim text.