PHASE STABILITY OF ETHANOL AND DIESEL FUEL BLENDS

Actual questions of the use of alternative fuels in diesel engines were discussed. An extended analysis of the miscibility of ethanol in diesel fuel and the situations in the literature has been analyzed in detail. Phase stability of ethanol and diesel fuel blends in a wide concentration range [eleven volume concentration between wV,et = (0 to 100) %] was investigated. The ultra pure ethanol (w=99.995%) from Merck Schuchardt OHG, Germany and Shell Global Solution DK5037 diesel B0 fuel sample from 2016 was used during the preparation of ethanol and diesel B0 binary fuel blends. The measurements were carried out using an accuracy vapor-liquid equilibrium installation. Phase stability temperature of ethanol and diesel fuel blends at different ethanol volume concentrations were developed and presented. The phase stability line connected with the freezing points of both samples. 1-butanol miscibility in diesel fuel were studied for the stability comparison of both alcohols-The both samples (ethanol or 1-butanol and diesel fuel) were kept in flasks under a vacuum for during the two years of control. The alcohols polarity induced by the hydroxyl group (-OH) was attended and discussed.