3861.  WALKER, S. W., AND LATTA, J. E. (Stanolind Oil &Gas Co.). Separation of Organic Oxygenated Compounds From Hydrocarbons. United States Patent 2,535,070, Dec. 26, 1950; appl. filed Aug. 12, 1948, Serial No. 43,946; 8 claims (Cl. 260-450).

Charging stock of organic oxygenated compound and hydrocarbon is countercurrently contacted with an aqueous extractant solution containing < 30% by weight of the defined class of solubilizer salts. A 1^st aqueous extract is with drawn containing the principal product fraction, consisting mainly of organic oxygenated com0pound, with only a small proportion of hydrocarbon contaminant. The resulting hydrocarbon raffinate, still containing organic oxygenated compound is then countercurrently contacted with an aqueous extractant solution containing in excess of 30% by weight of the defined class of solubilizer salts. A 2d aqueous extract containing organic oxygenated compound, which is heavily contaminated with hydrocarbon is with drawn. This mixture of organic oxygenated compound and hydrocarbon, when stripped from the 2d aqueous extract, may be recycled to the 1^st extraction stage. The 2d hydrocarbon raffinate contains comparatively little of the organic oxygenated compound. 3 United States patents cited.