THE PREPARATION OF DIESEL MICROEMULSION

The preparation of water-in-oil(W/O) diesel oil microemulsion with mixed nonionic surfactants was carried out.The microemulsions were formed with four constituents: water,oil,cosurfactant and surfactant,and their ternary phase diagrams were represented.According to the area change of microemulsion phase in ternary phase diagram,the effects of different factors on the formation of diesel oil microemulsion were investigated,including the mass ratio of surfactants,the type of cosurfactant,the mass ratio of cosurfactant to surfactant(m(C)/m(T)).In the preparation of diesel oil microemulsion,NaOH-water solusion was used to substitute the blended water in order to obtain the more stable microemulsion.Finally,the optimal preparation conditions were presented,in which the mass ratio of surfactants(m(T80)/m(S80)) was 0.667,(m(C)/m(T)) was 0.3 with n-butyl alcohol as the cosurfactant,and the mass fraction of NaOH liquor was 0.2%,the experimental results were also analyzed preliminarily by the HLB theory and interfacial membrane theory.