充气水力旋流器用于油水分离的试验研究

Experimental Investigations on the Air-Sparged Hydrocyclones for Oil-Water Separation

研究了充气量、进料量、分流比以及底流出口压力等主要操作参数对充气水力旋流器分离效率影响的规律 ,得出了较好的工况点 ;与相同结构参数的未充气旋流器的分离性能进行了对比 ,结果表明 ,充气旋流器能明显改善油水分离条件 ,具有较宽的操作弹性和较高的分离效率 ;同时用库尔特粒径分析仪分别测定了它们进口和底流口油滴的粒径分布 ,发现在旋流器中充入空气 ,强化了气浮 ,能够进一步分离更细粒径的油滴。

The major operating parameters, such as air-sparged flow, feed flow, split ratio, and underflow orifice pressure, on the separation efficiency of air-sparged hydrocyclones were studied, and comparative good working conditions points were obtained. The comparison with the separation efficiency of non air-sparged hydrocyclones with the same structures shows that the air-sparged hydrocyclones could significantly improve oil-water separation, had a wide operation flexibility and a high separation efficiency. The distribution of oil droplet size at the inlet and underflow orifice was measured with a coulter multisizer. It was found that air-sparged hydrocyclones could strengthen air flotation and separate smaller oil droplets.