流出C重油の諸特性-水面流出油に関する基礎的研究(第1報)-

概要

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It is known qualitatively that spilled heavy oil on the sea becomes highly viscous；however, studies on quantitative determination of the viscosity are scarce. In this paper, results of laboratory test on the viscosity increase of emulsion made by fuel oil C and water were shown with varying volume fraction of water and temperature. The viscosity of the emulsion was higher than that of the initial fuel oil with increasing the fraction of water. The maximum viscosity reached up to about six hundred times compared with the viscosity of the initial heavy oil at a water fraction of 0.75. The emulsion is so stable W/O (water in oil) type that separation of oil from the emulsion is necessary for disposal. Results of several attempts to separate the emulsion showed that heating or applying high shear stress was an effective way. Spreading velocity of fuel oil C on the sea is important information to estimate contaminated area. Measured spreading velocity of an oil droplet on rest water was 3.5 cm/s and the velocity was very sensitive to the contamination of the water surface.
社団法人資源・素材学会の論文
1999-08-25