A single effect evaporator is concentrating a feed of 9072 kg/h of a 10% wt. solution of NaOH in water to a product of 50% solids. The pressure of saturated steam used is 42 KPA (gage) and the pressure in the vapor space of the evaporator is 20 KPA (abs). The over – all heat transfer coefficient is 1988 W/m2 – K and the feed temperature is 298 K. Determine the steam consumption in kg/h. Calculate the steam used, the steam economy in kg vaporized/kg steam, and the area given that the feed tempearture is at 288.8 K.

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Distillation

Distillation is a process/technique to separate more volatile components from less volatile components using the principle of relative volatility. In chemical engineering, distillation is one of the most common and important topics that is involved in almost every industry and process.