本文介绍一种用于油田含油污水除油的新技术，利用旋转流产生的离心力，将存在密度差的油水两相混合液分离开来，对油田含油污水进行除油处理，具有分离效率高、分离时间短、体积小，操作维护方便的特点，特别适合于我国油田目前高含水期的含油污水处理，也可用于两种非混溶性液体的分离与提纯。 In this paper, a new oil removal technology for oily wastewater in oilfields is introduced. By utilizing the centrifugal force generated by the swirling flow, oil-water two-phase mixture with density difference is separated and the oily wastewater is degreased, Separation time is short, small size, easy operation and maintenance features, especially suitable for China’s oil field currently high water-containing oil wastewater treatment, can also be used for the separation and purification of two immiscible liquids.