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US 12,358,793 B2Granted
Methods and apparatuses for hydrogen production
Assignee8 Rivers Capital, LLC
InventorRodney John Allam
Life of this patent
Estimating the term…
Abstract
The present disclosure provides systems and methods for hydrogen production as well as apparatuses useful in such systems and methods. Hydrogen is produced by steam reforming of a hydrocarbon in a gas heated reformer that is heated using one or more streams comprising combustion products of a fuel in an oxidant, preferably in the presence of a carbon dioxide circulating stream.
Claims12
A method for hydrogen production comprising:
- carrying out one or more reactions in one or more reactors effective to form a synthesis gas stream comprising hydrogen and carbon monoxide;
- isolating at least a portion of the hydrogen from the synthesis gas stream;
- introducing a heating fluid stream at a first temperature to at least one of the one or more reactors;
- withdrawing the heating fluid stream at a second temperature from the at least one of the one or more reactors;
- withdrawing the synthesis gas stream from the at least one of the one or more reactors separate from the heating fluid stream;
- and
- passing the heating fluid stream withdrawn from the at least one of the one or more reactors through a heat exchanger so that the heating fluid stream exits the heat exchanger at a third temperature and so that heat from the heating fluid stream is transferred in the heat exchanger to one or more of a stream comprising carbon dioxide, a fuel stream, and the synthesis gas stream;
- wherein the second temperature is less than the first temperature, and the third temperature is less than the second temperature and the first temperature.
5 more elements
A method for hydrogen production, the method comprising:
- providing a reactor vessel including therein at least one tube assembly with a catalyst positioned therein;
- injecting into the reactor vessel a stream comprising a hydrocarbon and water such that the hydrocarbon and water pass through the at least one tube assembly while contacting the catalyst and are at least partially converted into a synthesis gas comprising hydrogen and carbon monoxide, and such that the synthesis gas passes through a central bore of the at least one tube assembly;
- injecting into the reactor vessel a heating fluid stream comprising predominately carbon dioxide such that the heating fluid stream passes around an outer surface of the at least one tube assembly;
- withdrawing the synthesis gas from the reactor vessel;
- withdrawing the heating fluid stream from the reactor vessel;
- isolating at least a portion of the hydrogen from the synthesis gas stream;
- and
- carrying out at least one shift reaction on at least a portion of the synthesis gas stream after withdrawing the synthesis gas stream from the reactor vessel.
5 more elements
Dependencies are inferred from the claim text.