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对于含油率在 1%～ 2 0 %之间的采出液来说 ,采用单级旋流器进行分离 ,常常无法同时满足底流水质和溢流含油两项要求。通常先将采出液进行预分离 ,再对其底流污水进行进一步除油。设计了一套名义直径为 3 5mm的预分和除油旋流器 ,并将它们置于橇装式试验台架上。同时设有取样装置并进行压力和流量的检测 ,大大方便了旋流器的现场试验。通过改变旋流器操作参数 ,试验两级旋流器的分离性能。试验中旋流管入口含油浓度波动较大 ,并具有随机性 ,这考验这旋流器的适应性。试验结果表明 ,平均入口含油浓度为 7. 63 %的油水混合物 ,经两级旋流分离后 ,净化水中含油最低为 19. 9mg L ,平均为 3 1. 75mg L ;油中含水率最低为 2 3 . 3 % ,平均为 4 0 . 95%
For oil recovery between 1% and 20%, single-stage hydrocyclone separation often can not meet the requirements of both underflow and overflow oil. It is usually the first pre-separation of the production fluid, and then the bottom of the sewage for further degreasing. A set of pre-divided and degreased hydrocyclones with a nominal diameter of 3 mm was designed and placed on a skid-mounted test rig. At the same time with a sampling device and the pressure and flow detection, greatly facilitate the cyclone field test. By changing the operating parameters of the cyclone, the separation performance of the two-stage cyclone was tested. In the experiment, the oil concentration in the inlet of the hydrocyclone fluctuated greatly and was random, which tested the adaptability of this hydrocyclone. The experimental results show that the average inlet oil concentration of 7. 63% of the oil-water mixture, after two cyclone separation, the lowest purified oil water was 19. 9mg L, an average of 3 1. 75mg L; the minimum water content of 2 3.3%, with an average of 40.95%