When using ASPEN for tower simulation, how can the actual number of theoretical plates be determined from the theoretical value?
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This post was last edited by yiyuguchen on 2019-4-10 17:45. When using ASPEN for tower simulation, how should the overall efficiency of the tower be determined? :):) How to determine the actual number of theoretical plates from the number of theoretical plates?
There is a Mowry efficiency value; the default is 100, but it is usually between 50 and 60
The separation efficiency varies for different material systems; for example, the separation of aromatics achieves around 65%, while that of propylene can reach over 80%.
It mainly relies on empirical relationships: correction is applied using the overall tower efficiency; for example, it can be calculated using O’CONNEL’s formula, and a value of 50–60% is generally sufficient. However, the overall tower efficiency is related to factors such as tray performance and vapor-liquid load, and it can vary even for the same tower.
Just look at the tray efficiency; it’s usually between 50 and 60