BÖWE M21 - Flash Tank

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M21-M26-M30
7. Functional Units 7.
7.19.1 Flash Tank
The condensate from the first fraction and then from the second fraction are recovered from the
distillation over the flash tank. During the distillation process, the flash tank is under the same vacuum as
the distillation system. The condensate from the first fraction (low-boiling solvents) runs from the
condenser to the flash tank. To drain the distillation system, the flash tank is disconnected and vented.
Draining is done to the extraction tank.
The condensate of the second fraction (cleaning solvent) is extracted in just the same way, but is drained
into the water separator. The level probe in the flash tank controls the draining.
707763-04-0
1 Flash tank
7 Evacuation of flash tank
2 Thermal sensor
8 Steam trap, first fraction (low-boiling solvents)
3 Level sensor, overfill sensor
A – Discharge, first fraction to extraction tank
4 Steam trap, second fraction
B – Discharge, second fraction to water
separator
5 Condenser
C – Overflow to distillation
6 Venting, flash tank
D – Suction line to vacuum pump