Importance

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Abstract

Hydrogen purification devices, components thereof, and fuel processors and fuel cell systems containing the same. The hydrogen purification devices include an enclosure, such as a pressure vessel, that contains a separation assembly that receives under pressure a mixed gas stream containing hydrogen gas and produces a stream that contains pure or at least substantially pure hydrogen gas therefrom. In some embodiments, the enclosure is sealed without gaskets. The separation assembly includes at least one hydrogen-permeable and/or hydrogen-selective membrane. In some embodiments the hydrogen-selective membrane is permanently and directly secured to the enclosure or a perimeter shell. In some embodiments, the membrane is welded, diffusion bonded or brazed directly to the enclosure or shell. In some embodiments, a portion of the membrane forms a portion of a seal and/or the sealed enclosure. In some embodiments, an interface is formed from consumed portions of the hydrogen-selective membrane and the enclosure or shell.

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First Claim