| 摘要 |
1497525 Breaking oil-water emulsions READING & BATES PRODUCT DEVELOPMENT CO EL PASO CONSERVATION CO and BOEING ENVIRONMENTAL PRODUCTS Inc 13 July 1976 [18 Sept 1975] 29147/76 Headings C5C and C5E Oil-water emulsions, e.g. wool-scouring emulsions or mineral cutting oil emulsions, are broken by (i) forming a mixture of the emulsion with a liquid amine in which the oil is soluble and which has an inverse critical solution point with water, at a temperature below the amine/water phase separation temperature so as to form a single liquid phase, (ii) raising the temperature above the critical solution temperature to effect liquid phase separation and form an amine phase containing substantially all the oil and a water phase and (iii) separating the amine phase from the water phase. The amine is preferably triethylamine with a critical solution temperature of 18À7‹ C. A filter aid, e.g. silica, may be added to the mixture, which is then filtered to remove solid material. |
