×

Sorption fractionation system for olefin separation

  • US 4,479,812 A
  • Filed: 06/29/1983
  • Issued: 10/30/1984
  • Est. Priority Date: 06/29/1983
  • Status: Expired due to Fees
First Claim
Patent Images

1. A continuous fractionation process for recovering ethylene from an olefinic feedstock comprising about 10 to 50 mole % ethylene and 10 to 50 mole % propene, said olefinic feedstock consisting essentially of volatile C2 -C4 hydrocarbons comprising the steps ofcontacting the olefinic feedstock in a countercurrent sorption tower with a liquid sorbent stream comprising C6+ olefinic gasoline range hydrocarbons under process conditions to selectively sorb substantially the entire C3+ olefin components from the feedstock;

  • withdrawing an ethylene-rich vapor stream from the sorption tower; and

    further contacting the ethylene-rich stream with a distillate range liquid hydrocarbon stream in a sponge absorber to recover ethylene having an average molecular weight not greater than 28.5.

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