C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 11/02 (2006.01) C07C 7/00 (2006.01) C07C 7/11 (2006.01) C07C 7/156 (2006.01) C10G 70/06 (2006.01)
Patent
CA 2158221
Ethylene and propylene are recovered from a mixture thereof with other hydrocarbons by: (a) feeding the mixture to a separation zone with a top and a bottom; (b) feeding to the top above the mixture an aqueous complexing solution to form Cu(I) complexes of ethylene and propylene; (c) feeding below the mixture ethylene to strip propylene from the propylene complex; (d) removing from the bottom below the stripping gas a first liquid stream containing the Cu(I) ethylene complex; (e) recovering ethylene from the Cu(I) complex using reduced pressure and/or elevated temperature; (f) removing from the separation zone between the gaseous mixture and the complexing solution, a second liquid stream comprising Cu(I) propylene complex; (g) recovering propylene from the Cu(I) complex and producing a liquid recycle stream comprising copper (I) salt; and (h) recycling the liquid recycle stream from step (g) to the separation zone.
Cooper Jeremy Bernard
Small Karen
Bp Chemicals Limited
Fetherstonhaugh & Co.
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