Method of storing and supplying hydrogen to a pipeline

  • US 7,078,011 B2
  • Filed: 03/30/2004
  • Issued: 07/18/2006
  • Est. Priority Date: 03/30/2004
  • Status: Active Grant
First Claim
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1. A method of storing and supplying a gaseous hydrogen product to a pipeline under a product purity specification, having a pre-specifed hydrogen purity and an impurity level of impurities comprising carbon dioxide and water vapor, said method comprising:

  • compressing a hydrogen steam made up of gaseous hydrogen to form a compressed hydrogen stream;

    introducing the compressed hydrogen stream into a salt cavern for storage of the gaseous hydrogen;

    recovering a crude hydrogen stream from the salt cavern;

    purifying the crude hydrogen stream by sufficiently removing at least the carbon dioxide and the water vapor from the crude hydrogen stream to at least in part produce a hydrogen product steam having the impurity level of the carbon dioxide and water vapor at or below the product purity specification; and

    supplying the gaseous hydrogen product to the pipeline by introducing said hydrogen product stream into said pipeline.

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