Let’s discuss the tower collision issue
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I heard from the experienced workers that salt formation at the top of the distillation tower can cause flooding of the tower. I don’t quite understand this: if the trays are blocked by crystals, then the amount of gas exiting the tower should be reduced, so how can there still be a large volume of gas exiting along with liquid? Caused the tower to collapse? Is it the increased speed of gas exiting the tower that causes entrainment? I’m not sure if that’s the case; please share your thoughts – points will be given
Is it the tray crystallization that results in poor separation efficiency?
Salt formation at the top of the distillation tower leads to increased pressure and a higher gas exit velocity, resulting in inadequate gas-liquid separation and ultimately entrainment.
When tray crystallization causes blockage and the tower pressure rises, flipping the blocked tray leads to a sudden drop in tower pressure, and the trays above it then experience flooding
Salt formation at the top of the tower leads to an increase in pressure inside the tower; when the pressure in the reflux tank remains unchanged, this increases the pressure difference. As is well known, a large pressure difference results in an increased flow rate, which causes the liquid phase to be dispersed and thus leads to liquid entrainment, that is, tower flooding