Multi-stage batch distillation is simulated using animation. Ten kmol of a binary mixture (components A and B, with B being the more volatile component) are placed in a batch still. Use the “initial mole fraction B” slider to set the initial composition of the still. Next, adjust the number of trays in the column with the “equilibrium stages” slider, and adjust the reflux ratio of the column with the “reflux ratio (L/D)” slider. Specify the amount of liquid to be collected using the “amount to collect” slider.
When you click “collect”, the outlet valve is opened and liquid evaporates into a collection container. The container is then set aside and an empty container is substituted.