The distillation unit with coil type condenser is one of the simplest types of condenser arrangements. The arrangement includes a total condenser, product cooler and vent condenser. Glass reaction vessels are available up to 400 liters in capacity and, where larger units are required, glass-lined and stainless steel vessels are commonly used. Coil type condensers have surface areas from 0.2m2 up to 12m2. Using cooling water at 20°C, these condensers have heat transfer coefficients of up to 250 kcal/m2/h & °C. This unit is used for distillation operation whereby the vaporization of a liquid mixture yields a vapor phase containing more than one component, and it is desired to recover one or more of these components in a pure state.