The Research About Mathematical Model Of Microwave Effecting On Oil-Water Emulsion’s Regular

Microwave breaking of emulsion is using of the high-frequency electromagnetic field to radiate emulsion, thus contribute to break the emulsion, separating oil from water. Predecessors in the laboratory conducted a comprehensive study of the system about Microwave breaking of emulsion, summed up a lot of the law, and achieved a good result, however at home and abroad, in theory, Microwave breaking of emulsion mechanism is not enough, Therefore, in order to further study the law of microwave breaking of emulsion, promote its application in the field. This study researches the law of microwave breaking of emulsion by mathematical model and qualitative analysis of the mechanism of the microwave for oil-water separation.Firstly, this study based on the emulsion theory respectively establishes spherical physical model in which asphaltene and interface-active substance compose of the interfacial film of the W/O type emulsion and in which APAM and interfacial activity material compose of the interfacial film O/W type emulsion; the second step is to establish mathematical models about the distribution of temperature field based on electromagnetic field theory and the theory of heat transfer; then determine the mathematical model the relevant parameters by laboratory and empirical formula, combine with the Maple software to solve the model; thirdly, use the MAS-II atmospheric pressure microwave to do a lot of experiments, and compare of results with the theoretical, experimental and theoretical results show good agreement, so you can calculate theoretically oil, water and interfacial film temperature distribution in either microwave irradiation time and electric field intensity; finally, combine of the temperature distribution formula to research respectively the effect of microwave breaking of emulsion in any microwave radiation frequency and microwave radiation time; then complex experimental and theoretical calculation formula to study the temperature distribution to affect the interfacial film shear viscosity, interfacial adsorption capacity the interface membrane shear viscosity, the electric double layer repulsive potential and the bulk viscosity,thereby analysis mathematically the microwave breaking of emulsion mechanism.After the study, the temperature distribution of emulsion Is proportional to the microwave irradiation time and to the square of the electric field strength.For the W/O type emulsion, in the given electric field strength, as the microwave irradiation time increases, the interfacialfilm strength and interfacial adsorption plummet continuous phase viscosity reduce as thetrend of the exponential function; when the microwave radiation time is same, with the electricfield intensity increases, the interface membrane strength and interfacial adsorption reduce inthe trend of the parabolic,the bulk viscosity decreases in the trend of the exponential function;The reason for this phenomenon caused by the microwave radiation is the longer, the greaterof the electric field intensity, the faster the temperature rises, the smaller the intermolecularattraction, thus making the surface tension decreased more significantly, interfacial molecularOrdering began to loose, resulting mechanical strength of the interfacial film reduced and theinter-droplet coalescence, polyethylene, and the resistance decreased, promoting breaking ofemulsion. For the O/W type emulsion, in the given electric field strength, as the time ofmicrowave irradiation increases, the shear viscosity of the interfacial film, the electric doublelayer repulsion potential and the body relative reduce in the trend of the exponential function;because the irradiation time is longer,the electric field intensity is greater, the mediumtransform into the heat is more, then intermolecular attraction is smaller, and theMacromolecule which is composed of the interface membrane and dissolved in waterfractured into small molecules, so that it not only reduced the interfacial film the mechanicalstrength but also reduced the resistance between the droplets, prompted the oil-water separate.