Laboratory deodorizer with a vaporization efficiency of unity

Summary Fatty acid/triglyceride systems deviate from ideality, consequently the use of activities is needed when determining the vaporization efficiency in deodorizers. In normal laboratory deodorizers the vaporization efficiency is low and is dependent on the steam flow rate, also on the absolute pressure. To obtain a vaporization efficiency of unity, independent of the steam flow rate and of the absolute pressure, heating of the head of the deodorizer is necessary in order to eliminate cooling and condensation effects. An isothermic deodorizer has been constructed, the steaming flask of which is immersed entirely in the heating bath. No separate vapor generator and superheater are needed; these are incorporated in the deodorizer and ensure a regular steam flow. At very high flow rates the vaporization efficiency decreases slightly.