基于CFD-PBM含油污水沉降实验装置的数值模拟

Numerical Simulation of Oily Sewage Settlement Experimental Device Based on CFD-PBM

沉降是目前油田含油污水处理过程中重要处理方法之一,而含油污水的油水分离特性是影响油田含油污水沉降处理工艺效率的关键因素。文章设计并搭建了含油污水沉降实验装置,对装置中含油污水沉降分离过程进行CFD-PBM数值模拟。首先运用实验验证模拟方法的可靠性,然后分析了不同油水相黏度、配液含油量和温度对含油污水沉降过程的影响,获得了含油污水在沉降装置中的沉降分离特性:当其他条件一定时,含油污水静置沉降过程中,油水相黏度越小,配液含油量越大,温度越高,含油污水沉降分离速度越快,油滴更容易从含油污水中快速分离出来上浮至顶部,表现出良好的油水分离效果。研究结果可为油田含油污水沉降实验研究及沉降处理工艺的运行提供一定的理论支持。

Settlement is one of the important treatment methods in the treatment process in oil fields.and the oil-water separation characteristic of oily was the key factor affecting the efficiency of oily sewage settlement treatment process.An experimental device for oily sewage settlement was designed and built in this study,and the settlement and separation process of oily sewage was numerically simulated by CFD-PBM in the device.Firstly,the reliability of the simulation method was validated by experiments,and then the effects of different viscosity of oil-water phase,oil content of the preparation liquid,and temperature on the settlement process of oily sewage were analyzed,and the settlement and separation characteristics of oily sewage in the settlement device were obtained.When other conditions were constant during the static settlement process of oily sewage,the lower viscosity of oil-water phase was,the larger oil content of the preparation liquid was,the higher temperature was,the faster settlement and separation speed of oily sewage was,and the easier the oil droplets were to quickly separate from the oily sewage and float to the top,demonstrating a great oil-water separation effect.The research results could provide some theoretical support for the experimental study of oily sewage settlement and the operation of the oily sewage settlement treatment process in oilfield.