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Composite hydrogen separation element and module

  • US 5,645,626 A
  • Filed: 01/11/1996
  • Issued: 07/08/1997
  • Est. Priority Date: 08/10/1990
  • Status: Expired due to Term
First Claim
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1. A process for the separation of hydrogen from other gases comprising:

  • (a) providing a feed gas comprising a mixture of gases containing hydrogen;

    (b) providing a hydrogen separation element which, after fabrication, comprises a nonporous hydrogen-permeable coating metal layer supported by a rigid ceramic, carbon, or metal support matrix, and a porous intermediate layer between said coating metal layer and said support matrix, wherein, at a temperature of from about 200°

    C. to about 1000°

    C.,said intermediate layer does not chemically react with hydrogen or with said coating metal layer or with said support matrix to form a hydrogen-impermeable layer, and said support matrix does not react with hydrogen or with said intermeiate layer to substantially reduce the tensile strength of said support matrix,and wherein each of said coating metal layer, said support matrix and said inter mediate layer are planar and have at least one common axis hole therethrough in alignment along a common axis and having a gas-tight gasket about the periphery of said at least one hole of said coating metal layer;

    (c) contacting said feed gas with said hydrogen separation element to form a hydrogen permeate stream; and

    (d) collecting said hydrogen permeate stream.

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