Study on the Relationship Between Emulsifier and Stability of Crude Oil Emulsion
The interfacial tension between the two phases of oil and water was analyzed,the viscosity change and stability time of emulsion was measured by emulsification experiment,and then the dispersion degree of water droplets was observed with the help of a microscope.Finally,it was concluded that for most emulsifiers such as esters and sulfonates,the longer the hydrophobic monoalkyl chain,the more complex the degree of interlacing between the oil phase and the oil phase,the better the performance of the emulsion prepared.If there were unsaturated double bonds in the hydrophobic groups of the emulsifier,the three-dimensional extension of alkyl carbon chains in the oil phase was restricted in space,and the emulsifying effect of the formed emulsion was worse.If the hydrophobic group of the emulsifier had the same branch chain as the alkyl main chain,the dispersion and adsorption of the hydrophobic group in the oil phase were severely restricted due to the existence of hydrogen bonds.At the same time,there was a certain angle between the interface films,which made the arrangement tightness of the interface films become weak,resulting in the poor performance of the emulsion.
EmulsifierViscosityEmulsification effectInterfacial filmHydrophobic group
万方数据
维普
