Petroleum Acids. VI. Naphthenic Acids from California Petroleum

Petroleum Acids and Bases

“…The Macmillan Petroleum Co., which generously furnished the acids, at that time used a peculiar refining system in w7hich straight-run gasoline and kerosene were w7ashed countercurrently in tw7o alkali towers so arranged and operated that the first removed the carboxylic acids w7hile the second removed practically only phenols. Advantage was also taken of development and use of countercurrent fractional neutralization or liberation of the acids as efficient separation methods to supplement fractional distillation of the acids and their esters (25).…”