Distillation tower condenser temperature issue
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In the distillation column simulation, a degasifier is used at the top of the column; partial-vapor-liquid conditions are set, resulting in a large amount of vapor being extracted. In the simulation results, the temperature of the condenser is much lower than that of the first tray. What is the reason for this? Thank you for the help
If you haven’t set the condenser temperature, have you set the parameters for the effluent and the top pressure of the tower? Is the calculated condenser temperature low then? What you said is a bit too general
Reply to 2# tingyu_001: Yes, I set the pressure at the top of the tower and the amount of vapor taken out; the temperature of the condenser calculated in this way is much lower than that in the first version. A conventional distillation unit with a full condenser does not exhibit such a situation
The temperature difference indicates the amount of non-condensable gas; (a large difference between the bubble point and dew point)
Reply to 3# Clover b: You can conduct a thermodynamic analysis to determine what the equilibrium temperature is under your condenser composition and pressure conditions If it doesn’t deviate much from the calculated value, then the calculation is correct.
It’s hard to say on this matter; the operation process needs to be examined carefully
I am here to learn *aspen.