原油储罐自动脱水器是在储罐生产运行中用于切水的重要设备,其选型是否恰当直接影响到原油脱水指标能否达标。在分析原油储罐自动脱水器脱水原理及结构的基础上,对其选型进行研究。研究结果表明:1)原油储罐脱水应选择自动脱水方式;2)对于密度和黏度变化大的油品以及重质油品,建议选用不受限于稳定油水界面、安装简单、维护方便的液柱谐振式管道式自动脱水器;3)对于油水分层明显的清洁轻质油品,建议选用不易受乳化层影响、油中水含量易于检测的机械浮球式缓冲罐式自动脱水器。研究成果可为原油储罐自动脱水器的选型方案提供借鉴。

Automatic dewatering system is an important device for dewater of crude oil storage tank. The appropriate selection of automatic dewatering system has direct influence on the basic sediment and water specifications of crude oil. This paper analyzed the water removal principle and structure of the automatic dewatering system. On this basis, this paper studied the selection of automatic dewatering system for crude oil storage tank. The study results show that: 1)The automatic dewatering method should be selected for crude oil storage tank dewatering;2)For heavy oil products with high variations in density and viscosity, it is recommended to use a liquid column resonance type pipeline automatic dewatering system, as this type of automatic drainer can handle both stable and unstable oil-water interface, and it is simple to install and easy to maintain;3)For clean light oil with clear oil-water interface, it is recommended to use an automatic dewatering system with a mechanical float, as it is not easily affected by the emulsified layer and it can easily detect the water content in the oil. The research results could provide guidance for the selection of automatic dewatering system for crude oil storage tank.