Abstract: A finished oil product is recovered from crude or waste oil contaminated with water and the like by heating the waste oil in a tank with a heating flame which may be gas or oil fired. The waste oil is heated until vapors including light ends and the desired finished oil product are produced from the waste oil within the tank. The vapors are introduced into the heating flame so that additional heat is developed by such afterburning to heat the waste oil in the tank. The finished oil product as recovered from the waste oil is discharged from the tank by a suitable outlet pipe arrangement.

Abstract: A finished oil product is recovered from crude or waste oil contaminated with water and the like by heating the waste oil in a tank with a heating flame which may be gas or oil fired. The waste oil is heated until vapors including light ends and the desired finished oil product are produced from the waste oil within the tank. The vapors are introduced into the heating flame so that additional heat is developed by such afterburning to heat the waste oil in the tank. The finished oil product as recovered from the waste oil is discharged from the tank by a suitable outlet pipe arrangement.

Abstract: Disclosed is a burner for liquid fuels which includes a combustion tube having an inner surface defining a combustion chamber, an end bell which mounts a nozzle for introducing the liquid fuel into the combustion chamber in the form of a fine spray, and an auxiliary air introduction means, also mounted to the end bell, which produces an auxiliary vortex flow of air around and concentric with the nozzle so as to entrain the fine spray of liquid fuel and form a fuel-air mixture. Means are provided for igniting the fuel-air mixture, and a main air introduction means is provided for producing a main vortex flow of air which serves to separate the fuel-air mixture from the inner surface of the combustion tube and to provide additional air for combustion of the fuel-air mixture. A collar means, preferably of a refractory material, is provided concentric with the nozzle.