中文摘要：

在室内动态实验研究基础上，全面考察高压高频脉冲电场的场强、频率、占空比对静电聚结器出口水滴粒度分布、中位粒径以及静电聚结器平均功率的影响规律，归纳了水滴聚并速率模型。研究结果表明，在乳状液初始分布一定的情况下，一定范围内增大电场强度、电场频率和脉宽比，有助于提升水滴的静电聚并速率。电场强度超过1．87kV·cm^-1后发生电分散，聚并速率降低。连续相的黏度越小，水滴在迁移聚并过程中的阻力越小，聚并速率越大。脱水电流随各电场参数的增加而增大，电流过大时，部分电场能经水链发生泄漏，水滴聚并速率有所降低。所得到的水滴聚并速率表达式反映了高压高频脉冲电场参数对水滴聚并规律的影响，为脉冲静电聚结破乳机理的深入研究奠定基础。

英文摘要：

Based on dynamic experiment, the influence of field intensity, frequency and duty ratio on droplet size distribution and median diameter of water droplets outflow from electrostatic coalescer and average power of the coalescer was comprehensively investigated, and the mathematical model of water droplets coalescing velocity in high-voltage and high-frequency pulse electrocoalescence process was obtained. The results show that, under the same initial droplets particle distribution, larger field intensity, frequency and duty ratio can enhance the water droplets coalescing velocity. Electrical dispersion occurs and coalescing velocity decreases when field strength exceeds 1.87 kV.cm-1. The smaller the viscosity of continuous phase, the smaller the coalescing process resistance of water droplets, the larger the droplets coalescing velocity. The dewatering current increases with the increase of the electric field parameters. Part of the electric energy leaks through water chain when dewatering current is excessively large, which decreases the droplets coalescing velocity. The obtained mathematical model of water droplets coalescing velocity can objectively reflect the coalescing characteristic of water droplets in high-voltage and high-frequency pulse electrocoalescence process, which laid good foundation for further investigation of high-voltage high-frequency electrostatic emulsion-breaking mechanism.