Liquid pressure in the reflux tank at the top of the vacuum distillation tower
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Dear sea friends, I would like to ask: for a tower with a pressure of 70 KpaA, how should the pressure of the reflux liquid in the tower top reflux tank be determined? Thank you
Are you referring to design pressure or operating pressure? If it is the operating pressure, 70 kPa (a) is sufficient; the design pressure is generally set at -0.1 MPa (g). Besides, isn’t the vacuum extraction point of your pressure relief tower located on the reflux tank? Even if not, there will still be a connecting pipe between the reflux tank and the condenser, so that the vacuum level remains the same; an operating pressure of 70 KPa is sufficient. For greater precision, it is necessary to subtract the various pressure drops
Vacuuming is done in the vacuum buffer tank, not in the reflux tank!
Where is your vacuum pipeline connected to in the tower system? The vacuum buffer tank you mentioned belongs to the vacuum pump system
The reflux tank and the condenser are connected by pipes; in the flow diagram, it seems that the condenser is connected to a vacuum buffer tank. Some of the light components return to the top of the tower from the reflux tank, while the vacuum buffer tank is connected to a reciprocating vacuum pump
If the potential difference is sufficient, positive pressure will do:)