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Regenerative hygroscopic filter and method

  • US 5,575,832 A
  • Filed: 09/21/1994
  • Issued: 11/19/1996
  • Est. Priority Date: 09/21/1994
  • Status: Expired due to Term
First Claim
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1. A regenerative hygroscopic filter comprising:

  • a housing containing an inlet port and an outlet port; and

    ,a hydrophilic filter element positioned within said housing between said inlet and outlet ports, and operatively arranged to filter solid particulate matter and water when gas passes into said inlet port and through said filter element, and to release water via said inlet port when gas passes from said outlet port through said filter element, wherein said filter element comprises an inherently gas permeable substrate treated with a hydrophilic substance, wherein said substrate is impervious to solid particulate matter.

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