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在炼油工业的上游操作中,静电聚结器装置被用来将油包水乳剂中的水从油中分离出来。本文从基本原理出发对影响静电聚结器性能的主要现象进行了描述,并主要针对静电聚结器装置建立了数学机理模型。另外,乳剂液滴的逐步凝结也以动态的形式在建模中被考虑进来,因为这一现象是影响装置操作整体收率的关键步骤。所建的差分系统及其边界条件被用来产生数值解,仿真结果证实了现有文献和工业数据,并针对主要参数进行了灵敏度分析。该数学模型在装置的设计、反应预测、性能监控以及优化中都能起到良好的作用。
In upstream operations in the refinery industry, an electrostatic coalescer device is used to separate the water in the water-in-oil emulsion from the oil. In this paper, the main phenomena affecting the performance of electrostatic coalescer are described based on the basic principles. The mathematical mechanism model of electrostatic coalescer is established. In addition, the gradual condensation of the emulsion droplets is also taken into account in the dynamic modeling in the modeling as this phenomenon is a crucial step in the overall yield of the device operation. The built-in differential system and its boundary conditions are used to generate numerical solutions. The simulation results confirm the existing literature and industrial data, and conduct sensitivity analysis of the main parameters. The mathematical model can play a good role in device design, reaction prediction, performance monitoring and optimization.