Hydrogen generation assemblies

Abstract of the Disclosure Hydrogen generation assemblies and methods are disclosed. In one embodiment, the hydrogen generation assembly comprises an enclosure; a hydrogen-producing region contained within the enclosure, the hydrogen-producing region configured to 5 produce an output stream from at least one feed stream, the output stream containing hydrogen gas and carbon dioxide gas, the at least one feed stream containing a carbon-containing feedstock; a heating assembly configured to receive at least one air stream and at least one fuel stream and to combust the at least one fuel stream within a combustion region contained within the enclosure producing a 10 heated exhaust stream for heating the hydrogen-producing region to at least a minimum hydrogen-producing temperature; a purification region contained within the enclosure, the purification region being configured to produce a product hydrogen stream and a byproduct stream, the product hydrogen stream having a hydrogen concentration greater than the output stream and a carbon dioxide concentration 15 less than the output stream, the byproduct stream having a hydrogen concentration less than the output stream and a carbon dioxide concentration greater than the output stream; and a gas removal assembly configured to separate at least a portion of carbon dioxide gas from the byproduct stream and to produce at least a portion of the at least one fuel stream therefrom.