Distillation equipment basic principles and applications

Different molecular distillation apparatus using the mean free path for the separation of substances, the basic principles. The material to be separated forms a uniform liquid film on the heating plate, and after heating, the material liquid molecules escape. A condensing plate is installed parallel to the heating plate . The entire distillation equipment is made of transparent glass; the online degassing device degass the material before entering the still to ensure the high vacuum in the evaporation chamber; the sampling hopper is equipped with The jacket can be used for material preheating, and the middle is integrated with a condenser; both light and heavy components adopt two-stage receiving bottles, and both can be continuously sampled for 10 times for detection. The temperature of the condensing plate is lower than the heating plate, and the distance from the heating plate should be less than the mean free path of light molecules and greater than the mean free path of heavy molecules. In this way, most of the light molecules can reach the condensing surface to form a liquid outflow, and the heavy molecules will return to the heating surface to achieve separation.

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