Supercritical separation process for complex organic mixtures

Details Supercritical separation process for complex organic mixtures Supercritical separation process for complex organic mixtures

C - Chemistry, Metallurgy

07

C

260/133, 260/534

C07C 51/487 (2006.01) B01D 11/04 (2006.01) C02F 1/26 (2006.01) C02F 11/00 (2006.01) C07C 59/01 (2006.01) C07G 1/00 (2006.01) D21C 11/00 (2006.01)

Patent

CA 1311236

ABSTRACT A process is disclosed for separating low molecular weight components from complex aqueous organic mixtures. The process includes preparing a separation solution of supercritical carbon dioxide with an effective amount of an entrainer to modify the solvation power of the supercritical carbon dioxide and extract preselected low molecular weight components. The separation solution is maintained at a temperature of at least about 70° C and a pressure of at least about 1,500 psi. The separation solution is then contacted with the organic mixtures while maintaining the temperature and pressure as above until the mixtures and solution reach equilibrium to extract the preselected low molecular weight components from the organic mixtures. Finally, the entrainer/extracted components portion of the equilibrium mixture is isolated from the separation solution.

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