液—液旋流分离器的数值模拟及参数优化

发布时间：2018-01-06 18:42

本文关键词：液—液旋流分离器的数值模拟及参数优化　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：旋流分离器是一类依靠离心进行分离的装置,是通过借助互不相溶的两种介质之间的密度差进行分离的。近些年来,旋流分离器的用途也由主要进行固-液分离发展到液-液分离、液-液-固分离和气-液-固三相分离。我国许多油田都在进行水力旋流器应用于油田采出液及油田污水处理方面的研究,从目前的形势看,已显示出良好的应用前景。本论文结合目前油田生产实际情况,针对脱油型旋流分离器开展了相关的实验研究工作。由于旋流分离器是利用流体压力的损失在达到分离的,所以在研究其分离特性的同时,还对各种压力损失情况进行了研究分析。论文还对旋流分离器的分离机理进行了详细的分析和论述。对不同溢流口直径和溢流管长度对旋流分离器分离效率的影响做了分析。利用FLUENT流体动力学软件,针对旋流器实验样机的主要结构形式,基于RNG k-ε模型对旋流分离器内部流场的压力分布情况、速度和流体流动情况进行了模拟分析,结果数据对旋流分离器的结构优化设计提供了可借鉴的依据。对于旋流分离器各结构参数对分离效果的影响,本论文也进行了较为详细的分析,并设计出几种不同的配套工艺,利用室内实验对旋流分离器系统进行了分析。结合现场生产实际,在大庆油田开展了污水处理旋流分离器及配套工艺的小规模生产应用研究,经过对比实验,可以看出,在现场生产实际情况下,旋流分离器可以将含油污水脱油90%以上,能较好地满足油田污水的处理要求。
[Abstract]:Swirl separator is a kind of separation device which depends on centrifugation. It is separated by the density difference between the two kinds of media which is not soluble in each other. The use of cyclone separator is also developed from solid-liquid separation to liquid-liquid separation. Liquid-liquid-solid separation and gas-liquid-solid three-phase separation. Many oilfields in China are studying the application of hydrocyclones in oilfield production and sewage treatment. It has shown a good application prospect. This paper combined with the actual production situation of the oil field at present. The related experimental work was carried out for the desorption cyclone separator. Since the cyclone separator is separated by the loss of fluid pressure, the separation characteristics of the cyclone separator are studied at the same time. The separation mechanism of swirl separator is also analyzed and discussed in detail. The influence of different spillway diameter and overflow pipe length on the separation efficiency of swirl separator is discussed. The analysis was made by using FLUENT fluid dynamics software. Based on the RNG k- 蔚 model, the pressure distribution, velocity and fluid flow in the swirl separator were simulated and analyzed according to the main structure of the experimental prototype. Results the data can be used for reference in the structural optimization design of the cyclone separator. The influence of the structure parameters of the cyclone separator on the separation effect is also analyzed in detail in this paper. Several different matching processes are designed, and the swirl separator system is analyzed by laboratory experiments. In Daqing Oilfield, a study on the small-scale production application of sewage treatment cyclone separator and supporting technology has been carried out. Through comparative experiments, it can be seen that in the actual situation of field production. The cyclone separator can deoiling oily sewage more than 90%, which can meet the requirements of oilfield sewage treatment.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE931.1;X741

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