×

Methods for storing hydrogen in a salt cavern

  • US 10,315,846 B2
  • Filed: 10/27/2015
  • Issued: 06/11/2019
  • Est. Priority Date: 05/25/2012
  • Status: Active Grant
First Claim
Patent Images

1. A method for storing high purity hydrogen product in a salt cavern, the salt cavern containing walls characterized by a halite structure having a minimum purity of at least about 75% of sodium chloride, comprising:

  • removing the high purity hydrogen product from a high purity hydrogen pipeline;

    compressing the high purity hydrogen product to produce a compressed high purity hydrogen product comprising a purity of 99% or greater;

    introducing the compressed high purity hydrogen product into the salt cavern to create a pressure between a predetermined lower limit and a predetermined upper limit within the salt cavern;

    maintaining the pressure within the salt cavern between the predetermined lower limit and the predetermined upper limit, wherein fluid is introduced into the salt cavern to increase the pressure within the salt cavern to at least the predetermined lower limit but below the predetermined upper limit, wherein the predetermined lower limit is 0.2 psi per linear foot of cavern depth and the predetermined upper limit is 1.0 psi per linear foot of cavern depth, wherein the cavern depth is defined as the vertical distance spanning from a top-most portion to a bottom-most portion of the salt cavern; and

    confining the high purity hydrogen product within the salt cavern.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×