Questions regarding tray efficiency
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We are currently working on a project for desulfurization using the alcohol-amine method. Using HYSYS, the number of trays in the absorption tower has been calculated to be 20. However, the actual number of trays required depends on the tray efficiency; some manuals recommend a tray efficiency of 40% while others suggest 60%. Experts, what is generally a suitable value for the actual tray efficiency in an absorption tower used for desulfurization via the alcohol-amine method? Thank you all.
50% efficiency, with 20 theoretical plates corresponding to 40 actual plates.
Is 50% efficiency experience?
With so many plates needed, what is the amount of sulfur absorbed at the inlet and outlet?
It is recommended to aim for a low efficiency level, as this will leave some margin.
I think around 40% efficiency is about right
Generally, 60% by distillation and 40% by absorption
The number of trays entered in HYSYS is the actual number of trays
Currently, in industry there are usually 24 actual plates, and in HYSYS calculations can be performed using the amine envelope method.