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Removal of carbon dioxide from olefin containing streams

  • US 4,493,715 A
  • Filed: 03/30/1984
  • Issued: 01/15/1985
  • Est. Priority Date: 12/20/1982
  • Status: Expired due to Fees
First Claim
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1. A method for removing low concentrations of CO2 from a gaseous olefin stream of at least C2 to C4 olefins which comprise passing said gaseous olefin stream containing CO2 into contact with a regenerable, calcined adsorbent consisting essentially of from 1 to 6 weight percent of an alkali metal oxide selected from the group consisting of sodium, potassium and lithium on alumina, said regenerable, calcined adsorbent having been made by (a) contacting alumina with an alkali metal compound selected from the group consisting of sodium, potassium or lithium compounds which are convertible to the metal oxide on calcination, (b) drying the resulting alkali metal compound, treated alumina, and (c) thereafter calcining the dried treated alumina.

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