摘要
Abstract
The separation performance of the PERFORMAX coalescer was studied by using the computational fluid dynamics method. In this study,Ansys Fluent software was used,and the coalescence and breakup models were included. The influences of coalescer's number,separation velocity,and droplet size on the separation efficiency weve obtained. The results showed that the separation efficiency was improved with the increase in coalescer's number. The separation efficiency of PERFORMAX coalescer increase greatly with the increase in droplet diameter under laminar flow condition,which is corresponding to gravitational separation,but the increment is not obvious when the droplet diameter is greater than 50 μm. The separation efficiency increases a little with the increase in droplet diameter under turbulent flow condition,which is corresponded to inertial separation. The results showed that the inertial separation efficiency is higher when the droplet diameter is less than 20 μm,otherwise,the gravitational separation efficiency is higher. Therefore,if the droplet diameter is small,the inertial separation could be a good choice,Coalescence plate separation efficiency changes with the speed of two peaks,the first peak of the dominant force of gravity,the second peak is the inertial force. When the flow rate is further increased,the separation efficiency decreases slightly due to the broken droplels. But the separation velocity should be lower than the critical breakup velocity because inertial separation involved collision,which may easily cause droplet breakup.The separation efficiency of PERFORMAX coalescers used in the process of removing oil from produced water is higher than that of removing water form oil.With the decrease in oil density,the separation efficiency is increased gradually.But this change is not distinct for the density variation between different types of oil is not too large.关键词
PERFORMAX聚结板/计算流体动力学/聚结/破碎/分离效率Key words
PERFORMAX coalescer/computational fluid dynamics/coalescence/breakup/separation efficiency分类
能源科技
