Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By addition of extraneous agent – e.g. – solvent – etc.
Patent
1995-09-07
1997-06-17
Caldarola, Glenn A.
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By addition of extraneous agent, e.g., solvent, etc.
585848, 585833, C07C 7148, C07C 710
Patent
active
056399359
ABSTRACT:
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 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.
REFERENCES:
patent: 2245719 (1941-06-01), Robey
patent: 3755487 (1973-08-01), Jahnig et al.
patent: 3868398 (1975-02-01), Kroll et al.
"Mono-Olefins, Chemistry and Technology"; F. Asinger; Pergamon Press; pp. 256-259, .COPYRGT.1968. (No Month).
"Base Stock From Petroleum and Natural Gas for the Chemical Industry"; Sixth World Petroleum Congress Proceedings; Frankfurst/Main, Jun. 19-26, 1963; Section IV, pp. 325-343.
Cooper Jeremy Bernard
Small Karen
BP Chemicals Limited
Bullock In Suk
Caldarola Glenn A.
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