Increase in pressure drop in the atmospheric pressure tower
Thread Content
There is an existing atmospheric pressure tower; the temperature at the top of the tower remains the same as under normal operating conditions, at 115°C. However, the pressure at the top of the tower has decreased from 44 kPa to 30 kPa, which results in an increased pressure drop from the top of the tower to the feed section. As a result, the product does not meet the required standards. What could be the reason for this? What other solutions are there? Thank you!
What is the temperature after air cooling? Is it too low?
Resulting from the reduction in the heat load of the entire tower
Could it be that salt deposition on the tray is causing excessive pressure drop, thereby reducing the load at the top of the tower?
It would be best to include a DCS screenshot of the atmospheric tower so that the various operating parameters can be seen. Let me judge it for you again
For distillation towers, there is one thing to remember. Certain temperatures, pressures, and compositions are corresponding to each other. If one condition changes, the others will change as well. If the temperature remains the same but the pressure decreases, then the composition becomes heavier; that’s a case of tower flooding.