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目前,原油脱水广泛采用热化学沉降、直流电-化学脱水的两段脱水工艺。通过现场试验和实践证明,把原设计的电脱水器的6层电极改为4层电极,调整电极距离,可取得提高电脱水器的处理量和降低电能消耗的良好效果。由于6层电极的底层,其电场强度是按0.5千伏/厘米设计的,而底层电极与油水界面之间的距离是350毫米,因而控制油水界面的难度较大。当油水界面稍微偏高,就会导致底层电极放电,这不但使原油电脱水器的耗电量增大,而且使脱水器的运行不稳定。
Currently, crude oil dehydration widely used thermochemical sedimentation, DC - chemical dehydration two dehydration process. Through the field test and practice, it is proved that changing the 6-layer electrode of the original design electric dehydrator into 4 layers of electrodes and adjusting the electrode distance can achieve the good effect of improving the throughput of the electric dehydrator and reducing the electric energy consumption. Since the bottom layer of the 6-layer electrode has an electric field strength of 0.5 kV / cm and the distance between the bottom electrode and the oil-water interface is 350 mm, it is more difficult to control the oil-water interface. When the oil-water interface is slightly high, it will cause the bottom electrode to discharge, which not only increases the power consumption of the crude electric dehydrator but also makes the dehydrator unstable.