Method and apparatus for separating liquids of different specific gravities from a mixture of the same

摘要

A barge for separating oil-water mixtures comprises a sealed tank into which the mixture is pumped for gravity separation. Pumping is effected by withdrawing the separated water from the bottom of the tank by means of a pump that produces a negative pressure in the tank, and this negative pressure sucks up the oil-water mixture from the surface of the water, without subjecting the mixture to mechanical pumping. An intake pipe for the mixture has a cylindrical basket at its intake end surrounded by a cylindrical casing open at its top and closed at its bottom. The intake pipe opens upwardly into the tank, and water is withdrawn from the lower end of the downwardly converging walls of the tank.