In this paper, a dynamic model of fouling is presented to predict the crystallization of calcium carbonate and magnesium hydroxide inside the condenser tubes of Once-Through Multistage Flash (MSF-OT) desalination process. The model considers the combination of kinetic and mass diffusion rates taking into account the effect of temperature, velocity and salinity of the seawater. The equations for seawater carbonate system are used to calculate the concentration of the seawater species. The effects of salinity and temperature on the solubility of calcium carbonate and magnesium hydroxide are also considered. The results reveal an increase in the fouling inside the tubes caused by crystallization of CaCO₃ and Mg(OH)₂ with increase in the stage temperature. The intake seawater temperature and the Top Brine Temperature (TBT) are varied to investigate their impact on the fouling process. The results show that the (TBT) has greater impact than the seawater temperature on increasing the fouling.

在本文中，提出了一种结垢动力学模型，以预测一次直通多级闪蒸（MSF-OT）脱盐过程的冷凝器管内碳酸钙和氢氧化镁的结晶。该模型考虑了温度，速度和海水盐度的影响，综合考虑了动力学扩散速度和质量扩散速度。海水碳酸盐系统的方程用于计算海水中的浓度。还考虑了盐度和温度对碳酸钙和氢氧化镁的溶解度的影响。结果表明，CaCO ₃和Mg（OH）_2的结晶导致管内结垢的增加随着工作台温度的升高。改变进气海水温度和最高盐水温度（TBT），以研究它们对结垢过程的影响。结果表明（TBT）对增加结垢的影响大于海水温度。