CFD simulation of mixed coalescer on gasoline washing process with alkaline

Key words:  coalescer  Fluent software  mixture model  wetting angle  flow field distribution

Abstract:

The NS mixed coalescer is a new type and high-effective separator used in reaction-seperation processes. A CFD about the device was done on the process of gasoline washing with alkaline by the Fluent software. The effects of every factors on the coalescence process of oil and water were studied. And its internal flow field was also simulated in order to optimize and improve the coalescer's design. The three-dimensional model with one fiber consists oi k - s turbulent model, discrete phase model, mixture model and volume of fluid ( VOF) model. The effects of surface tension on coalescence process and interaction of two phase fluid were studied. The results show that using another gas-liquid distribution by a layer of refine packing ,the separation efficiency could be increased greatly after a preliminary distribution to liquid or gas using sprinkle-nozzle.