Change in the location of the overhead stream line in the distillation column
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The top stream line of the PROII distillation simulation has three locations: one at the top of the condenser, where the vapor phase is discharged; one on the right side below the condenser, where the decanted water is discharged; and one in the middle section below the condenser, where the liquid phase is discharged. However, in my actual simulations, I found that the liquid-phase stream line, which was originally connected in the middle below the condenser, would move to be connected to the main body of the tower after operation. I wonder if there’s any deeper meaning to this? Last edited by visavis on 2009-4-14 10:55]
The logistics connection of the equipment is primarily determined by the parameters within the equipment itself, while the PFD merely provides a clearer indication of the flow relationships. In the situation you described, there are two possibilities: either you have defined in the equipment parameters and logistics settings how the liquid phase enters the tower equipment, or the tower is defined in that way (I’m not very familiar with ProII); or else the line in question isn’t connected to the tower but is simply hidden behind the tower icon. If neither of these is the case, it could be a software bug.
If the movement is not caused by your parameter definition, it has no impact on your calculation results.