Impact of tower height changes
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I’m seeking advice from fellow professionals on a device selection and calculation issue: The original exhaust gas absorption tower in the chlor-alkali plant was made of FRP, which required frequent maintenance; later, its material was changed to CPVC, and the height of the tower increased by about 1 meter. Without changing the existing process equipment, what are the implications of simply increasing the tower’s height? What aspects need to be taken into consideration?
This can generally be simulated using process modeling, which is more intuitive; one cannot rely on experience – using data provides a more reliable basis!
Increasing the tower height has an impact on the tower’s absorption capacity. In essence, the tower height needs to be adjusted in order to regulate the ratio of reflux to the extraction of liquid from the bottom, thus keeping the tower in a balanced state. Raising the tower by one meter is beneficial for absorption.