Oil emulsions are polydisperse media and have a droplet size in the macro and micro range. Macro and microemulsions can be found in both water-in-oil emulsion types and oil-in-water emulsion types. Taking into account the size distribution of water-oil emulsion droplets has a great influence on the accuracy of calculations when modeling the process of oil dehydration. Droplet size and droplet size distribution are important for the stability and viscosity properties of the emulsion. In the article, based on the rate of coalescence and fragmentation of particles, an expression is proposed for the rate of change in the number and size of particles per unit volume. On the basis of the Fokker-Planck equation, an expression for the distribution function of water droplets in an oil emulsion is found and, on its basis, an estimate of the distribution is investigated

doi.org/10.32737/0005-2531-2023-3-61-69