T型管内油水分离特性的CFD-PBM数值模拟

发布时间：2018-02-28 14:49

本文关键词： T型管数值模拟计算流体力学相群平衡模型分离效率粒度分布　出处：《化工学报》2017年04期 　论文类型：期刊论文

【摘要】：目前关于T型管内油水分离特性的数值模拟大多采用Euler-Euler多相流模型,考虑管内油滴粒径分布及其对油水分离特性影响的研究工作尚未见报道。对T型管内的油水两相流动情况和分离特性进行了CFD-PBM数值模拟,并进行了室内实验以验证模拟结果的准确性。结果表明,T型管内油滴粒径随流体流动方向具有逐渐增大的趋势;增大来液中的油滴粒径分布可以有效提高油水分离效率,反之当来液中的油滴粒径较小时,油水两相在T型管内不易分离,相分配比始终与分流比几乎相同;分流比、Reynolds数等操作条件对油水分离效率的影响程度与油滴粒径密切相关,应慎重选取适当的操作条件以保证T型管的油水分离效率。
[Abstract]:At present, Euler-Euler multiphase flow model is mostly used in numerical simulation of oil-water separation characteristics in T-tube. The study of oil droplet size distribution and its influence on oil-water separation characteristics has not been reported. The oil-water two-phase flow and separation characteristics in T-tube are numerically simulated by CFD-PBM. Laboratory experiments were carried out to verify the accuracy of the simulation results. The results show that the diameter of oil droplets in the T tube increases gradually with the flow direction of the fluid, and increasing the particle size distribution of the oil droplets in the incoming liquid can effectively improve the separation efficiency of oil and water. On the contrary, when the size of oil droplets in the liquid is small, the oil-water two-phase is difficult to separate in T-tube, and the phase distribution ratio is almost the same as that of the distributary ratio, and the influence of the operation conditions such as the separation ratio and Reynolds number on the separation efficiency of oil and water is closely related to the oil droplet diameter. Appropriate operating conditions should be carefully selected to ensure the oil-water separation efficiency of T-tube.
【作者单位】：北京化工大学机电工程学院;北京石油化工学院机械工程学院;中海石油环保服务(天津)有限公司;
【基金】：国家自然科学基金项目(51079006) 北京市自然科学基金重点项目(KZ201410017019)~~
【分类号】：TQ028.3

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