Study of the micro-explosion temperature of water in oil emulsion droplets during the Leidenfrost effect

To burn water in oil emulsions (W/O) is considered as an effective alternative to bring out waste oil because of a significant reduction in carbon monoxide, nitrogen oxides and particulates in the exhaust. These advantages have different origins, an important contribution is provided by the phenomenon of micro-explosion. In this work, the influence of the size of the dispersed water droplets (D32), for three iso-water emulsion, in the micro explosion phenomenon is studied by the hot plate technique. The temperature of the emulsion droplet and the visual evolution of the samples are evaluated using a synchronized thermocouple/CCD system. The results show that the size distribution of the dispersed water droplets plays an important role in the phenomenon of micro explosion. Moreover, some internal phenomenon as the separation process between water and oil seems to be discriminate.