| 摘要 |
The present invention provides a process for separating ethanol from an aqueous solution by supercritical or near supercritical extraction in combination with reverse osmosis, which includes contacting an ethanol containing aqueous solution with one side of a reverse osmosis membrane in the presence of a supercritical or near supercritical CO2 having a pressure of 72.8-88.4 atm and a temperature of 26.5 DEG -34 DEG C., wherein the volumetric ratio of the supercritical or near supercritical CO2 to the ethanol containing aqueous solution is higher than 1.8, and recovering a permeate solution having a lower ethanol concentration from the opposite side of the membrane.
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