Physical Properties and Stability of Water in Fuel Oil Emulsions

摘要

This report presents the second year from a two year effort to determine the physical properties of water-in-fuel oil emulsions. Ultrasonically induced interfacial instability and cavitation were used to produce emulsions of water-in-gasoline, -No. 2 diesel oil, -No. 4 heating oil and -No. 6 fuel oil without the addition of surfactants. Compressibility measurements are presented for each of the four fuel oils as a function of water volume fraction. Measurements are also presented for No. 4 heating oil as a function of temperature. Corrosion rates for mild steel were measured in emulsions of No. 6 fuel oil at 10% volume fraction of water at 70C and 90C. The viscosity of oil-in-water emulsions was studied as a function of volume fraction of oil and of particle size distribution of oil in the emulsions. The stability of the oil-in-water emulsion was studied for the case of simultaneous creaming and flocculation.