PATENT

3339.  SHARP, L. G., AND CARMODY, D.R.  (Stanolind Oil & Gas Co.).  Extraction of Organic Oxygenated Compounds From Hydrocarbon Mixtures.  United States Patent 2,568,517, Sept. 18, 1951; appl. filed June 4, 1949, Serial No. 97,288;  16 claims (Cl. 260-450).  Chem. Abs., vol. 46, 1952, p. 2566.

Oxygenated organic compounds, such as aldehydes, ketones, alcohols etc., obtained in the Fischer-Tropsch hydrocarbon synthesis process and existing in hydrocarbon solution, are extracted there from by treatment 1^st with a bisulfite-fatty acid soap mixture in which the latter may be derived by neutralizing the crude fatty acids obtained in the hydrocarbon synthesis process, steam distilling the resulting aqueous extract and then further extracting the resultant fraction of oxygenated organic compounds with a 2d bisulfite-fatty acid soap solution derived from acids having 5-7 C atoms.  The following operating conditions are preferred:  Temperature of extraction 37°-43°, fatty acid soap concentration in the solution 20-25%, bisulfite concentration I 5-7.5%, pH of extractant solution 6.8-7.3, ratio of extractant solution to crude hydrocarbon mixture 4:1 to 10:1.  The method thus described will yield a product containing less than 5% of contaminant hydrocarbons.

SHARPLES CHEMICALS, INC. See abs. 2556, 2557.