Numerical Simulation on Flow Field Characteristics of Centrifugal Supergravity Oil/Water Separator
As oilfield exploitation gradually enters high water cut stage,the performance requirements for oil/water separator are becoming increasingly stringent.However,the existing oil/water separators fall behind such re-quirements,and further efforts are urgently needed in oil-water separation.In this paper,a numerical simulation was performed to identify the flow field characteristics of a new centrifugal supergravity oil/water separator,and ex-plore the influences of flow parameters,structural parameters and physical parameters on the performance and flow field characteristics of the separator.The results show that the separation performance is good under various volume fractions of water.The separation efficiency at the oil outlet decreases with the increase of water cut,and the oil content at the water outlet is low when the water cut is high.As the inlet flow rate increases,the oil content at the water outlet increases,and the separation efficiency at the oil outlet decreases and then remains basically un-changed.As the motor speed increases,the separation efficiency at the oil outlet increases and then remains basi-cally unchanged.When the motor speed is 500 r/min,the separation efficiency at the oil outlet is 82%.When the motor speed is 1 500 r/min,the separation efficiency at the oil outlet increases to 97%.Within the simulation range,the number of vanes is positively correlated with the separation effect.The oil density and viscosity are all negatively correlated with the separation effect:the larger the oil density and viscosity,the worse the separation effect is.The study results provide theoretical guidance for the practical application of centrifugal supergravity oil/water separator.
oil/water separatorcentrifugal supergravityflow field characteristicsseparation performancevolume fraction of watermotor speed
NETL
NSTL
万方数据
维普
