Distillation column pressure issue?
Thread Content
During normal operation of the distillation tower, the pressure at the top of the tower is slightly over 0.09 MPa; but why does the pressure rise to around 0.15 MPa during shutdown?
Prevent air from entering the distillation tower, which could cause ferrous sulfide to catch fire and lead to accidents.
Maintain a slight positive pressure inside the tower! Prevent air and moisture from getting in! Unnecessary trouble!
Is it true that during the shutdown process, as the amount of processing decreases, the load on the tower reduces and the pressure at the top of the tower increases? This phenomenon is quite evident in our production processes, where the tower pressure rises significantly after washing the distillation tower
What is said on the second floor is correct; the purpose is to prevent ferrous sulfide from catching fire on its own
As the rise in the bottom of the tower decreases, the reflux flow also gradually reduces. The pressure difference between the bottom and the top of the tower decreases, while the content of high-boiling substances at the top of the tower increases gradually; as a result, the pressure at the top of the tower rises!