沿海大型原油库污水处理系统可靠性研究

发布时间：2018-11-25 19:21

【摘要】：近年来国内外石化企业由于油品泄露导致污染的案例屡见不鲜。沿海油库毗邻大海,一旦发生泄漏会对海洋环境造成重大污染,尤其是在雨季排水量激增时后果更为严重。研究沿海大型原油库污水处理系统可靠性对于防止海洋污染、降低油库的经济损失具有重要意义。论文以黄岛油库为例,对沿海大型原油库污水处理系统可靠性进行了研究。在对黄岛油库污水处理系统进行详细调研的基础上,利用Fluent软件选取RNGk-?模型湍流模型和Mixture多相流模型对油库污水处理系统中的关键设施——罐区隔油池在雨季作为初期隔油措施的可靠性进行数值模拟,确定了模拟中的油滴粒径和水封高度,分析了入口含油量、积水深度等因素对隔油池隔油效果的影响;对罐区隔油池的形状和结构进行了优化,得出了圆柱形隔油池隔油效果优于现用方形隔油池、增设溢油口的隔油池优于现有无溢油口隔油池的结论,根据模拟结果对黄岛油库罐区隔油池结构改造提出了合理化建议;在对罐区隔油池数值模拟的基础上,通过建立隔油池室内实验模型,对隔油池隔油效果进行了实验研究,并与模拟结果进行了比较;为了检验整个污水处理系统的可靠性,对系统中的其它关键设备抗强降雨冲击性能进行了分析,结合分析结果对现场操作提出了建议。
[Abstract]:In recent years, domestic and foreign petrochemical enterprises caused by oil leakage pollution cases are common. The coastal oil depots are adjacent to the sea, which will cause serious pollution to the marine environment once the oil spill occurs, especially when the discharge surge in the rainy season is more serious. It is of great significance to study the reliability of sewage treatment system for large crude oil depots in coastal areas for preventing marine pollution and reducing the economic losses of oil depots. Taking Huangdao Oil Depot as an example, the reliability of sewage treatment system of large crude oil depot in coastal area is studied in this paper. On the basis of the detailed investigation on the sewage treatment system of Huangdao Oil Depot, RNGk-? is selected by using Fluent software. The model turbulence model and the Mixture multiphase flow model are used to simulate the reliability of the oil tank, the key facility of the oil depot sewage treatment system, as an early oil separation measure in the rainy season. The size of the oil droplet and the water seal height in the simulation are determined. The influence of oil content at inlet and depth of water on the oil separation effect of oil separator is analyzed. The shape and structure of the oil tank in the tank area are optimized, and the conclusion is drawn that the oil separation effect of the cylindrical oil separator is better than that of the square oil separator, and the oil spill opening is better than the existing oil spill tank. According to the simulation results, reasonable suggestions are put forward for the reconstruction of the oil separation tank structure in the oil tank area of Huangdao Oil Depot. On the basis of the numerical simulation of the oil separation tank in the tank area, through establishing the indoor experimental model of the oil separation tank, the oil separation effect of the oil separation tank is studied experimentally, and the results are compared with the simulation results. In order to test the reliability of the whole sewage treatment system, the performance of other key equipments in the system against heavy rainfall shock is analyzed, and some suggestions for field operation are put forward in combination with the analysis results.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE972

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