Pressure drop problem in packed towers
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A packed tower has been added to the unit; when the load is around 90%, the pressure difference across the tower starts to increase, reaching around 19 kPa, whereas under normal conditions it is generally below 10 kPa. Yesterday, after operating at 100% load for some time, this issue occurred: the pressure difference across the tower dropped suddenly to 13 kPa. Since all the instruments are equipped with dual remote transmission functions, there should be no problem. Judging from the temperatures at the top and bottom of the tower, the temperature difference is increasing, which suggests that the separation effect is improving. Has anyone encountered this situation? What could be the cause?
Regular packing? Has the liquid holding capacity in your tower changed, resulting in an increased pressure difference? There’s definitely more resistance, as well as more gas or liquid. Yet the pressure difference at 100% load has decreased; this means there’s certainly more gas, so it must be that less liquid is flowing downward. Check your backflow rate, as well as whether there’s any deviation in the flow from your distributor. As for the temperature difference, as the pressure difference between the top and bottom of the tower changes, the temperature difference will certainly also change