Distillation discontinuous open

In open distillation the vapor generated in the reboiler is steadily removed from the residual liquid. In practice this process is preferably performed as a discontinuous process, called batch distillation. 

In discontinuous simple open distillation discontinuous partial distillation, Rayleigh Distillation) the distillation still is charged with a liquid mixture. Slow heating to the boiling point partially vaporizes the liquid. The vapor becomes enriched with the more volatile components and is withdrawn from the distillation still. After condensing in a condenser the distillate is stored in a distillate receiver (Fig. 2-3). 

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