Acidic water system: What are the phenomena and principles behind tower flushing?
Thread Content
Column surge phenomenon: The temperature at the 44th stage rises, an excessive amount of material is drawn off via the side stream, followed by an increase in the temperature at the top of the column (even closing the top outlet completely does not help), with the column pressure first decreasing and then rising sharply. Please discuss the principle behind it; I can’t figure it out!
Plate fouling. A detailed description of the tower is needed; is the 44th floor at the top?
The temperature rise at the 44th layer indicates a tower flooding event; the fact that no liquid is drawn off from the side lines suggests that the location of the ammonia-rich zone has changed. The subsequent temperature rise is due to the liquid phase reaching the top of the tower, and it is ineffective to close the acid gas control valves completely. The pressure drops first and then rises again as a result of the reaction between H2S and ammonia, after which the water pressure increases