Orthogonal Numerical Experimental Study on Oil-water Separation Efficiency of T-tube
T-shaped pipes are widely used in oil-water separation in oil fields,and there are many factors that affect their separation efficiency.Using the orthogonal experimental method,18 sets of experimental schemes were designed for a total of 6 factors and 3 levels,including the geometric parameters of T-shaped pipes,such as pipe diameter,vertical pipe spacing,and vertical pipe number,as well as the operating parameters of oil content,inlet velocity,and diversion ratio.Computational fluid dynamics numerical simulation method was used to conduct numerical experimental research on them.The results show that the influence of various factors on the separation efficiency of T-shaped tubes is as follows:number of vertical tubes＞vertical tube spacing＞separation ratio＞oil content＞inlet flow velocity＞tube diameter.The optimal combination of T-shaped pipes is 60 mm diameter,3 vertical pipes,1 000 mm vertical pipe spacing,40%oil content,0.35 m/s inlet flow rate,and 0.4 diversion ratio.At this time,the separation efficiency of T-shaped pipes reaches 99.99%.The separation efficiency first decreases and then increases with the increase of the number and spacing of vertical tubes,and then increases and decreases with the increase of the split ratio and oil content.The effect of pipe diameter and inlet velocity separation efficiency is relatively small,and its size can be determined as needed.
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