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IMPROVED PROCESS FOR SEPARATION OF ALKENES FROM ALKANES

  • US 20180134638A1
  • Filed: 05/06/2016
  • Published: 05/17/2018
  • Est. Priority Date: 05/11/2015
  • Status: Abandoned Application
First Claim
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1. A process for separating one or more alkanes from one or more alkenes, comprising:

  • (a) providing a membrane comprising a layer of an ionomer, said ionomer comprising repeat units derived from one or more fluorinated monomers and a repeat unit having a Group 11 metal salt of a sulfonic acid group, said membrane having a first side and a second side, providing that carbon-fluorine groups are at least 30% of the total of said carbon-fluorine groups and carbon-hydrogen groups present in said ionomer;

    (b) exposing said first side to a feed composition comprising a gaseous first mixture of one or more alkanes and one or more alkenes;

    (c) providing a driving force; and

    (d) producing a second mixture, on a second side of said membrane, having a higher ratio of alkene to alkane than said first mixture;

    and wherein the improvement comprises said feed composition is passed through and/or over a material which reduces the concentration of one or more sulfur containing compounds in said first mixture.

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