On the method of ethyl acetate-water azeotropic distillation
The method of human distillation, in order to analyze the mixture of ethyl acetate and water, the azeotropic state, is really the key. Cover ethyl acetate and water, at a specific temperature and pressure, will form an azeotrope, its composition is constant, if the ordinary distillation method, it is difficult to separate the two purely.

To break this situation, we should find a special method. First, we can introduce a third component by means of azeotropic distillation. This component needs to be able to form a new azeotrope with ethyl acetate or water, or both, and the boiling point of the new azeotrope is significantly different from the original azeotrope or ethyl acetate and water. In this way, during distillation, the new azeotrope first escapes, so that ethyl acetate and water are gradually separated.

Second, during operation, the equipment, temperature, pressure and other conditions of distillation should be precisely controlled. The design of the distillation tower needs to be exquisite to make the gas-liquid mass transfer efficient, so as to increase the separation effect. The adjustment of temperature is related to the formation and separation of azeotrope, and there should be no slight difference. Pressure is also a factor, or constant pressure, or variable pressure, depending on the characteristics of the system, in order to make the process of azeotropic distillation of ethyl acetate and water smooth and achieve the purpose of separation and purification.

Furthermore, after distillation, the collection and detection of the product cannot be ignored. At the time of collection, the purity of ethyl acetate and water is ensured according to the boiling point and fraction characteristics. The detection is based on precise instruments to measure its composition, purity and other indicators to prove the effectiveness of separation.

In general, the azeotropic distillation of ethyl acetate-water requires detailed investigation of the principle of azeotropic distillation, precise control of the operating conditions, and strict inspection of the quality of the product, so that in the mixed system, pure ethyl acetate and water can be obtained, which is used in the chemical industry.