Flush Drum 
Aim of experiment
Distillation is a unit operation or a physical separation process of separate more volatile components from a mixture by partial vaporisation of the liquid mixture followed by condensation. The distribution of the components in the two phases is governed by the vapour liquid equilibrium relationship.
The most elementary form of simple distillation is Flash Distillation, in which a feed mixture is partially vaporized to produce vapour which is enriched with more volatile components and a liquid that is devoid of volatile components. The vapour and liquid streams leaving the drum are in equilibrium. This operation is called equilibrium flash vaporisation or flash distillation.