Let You Understand Laboratory Molecular Distillation in Seconds!

Laboratory molecular distillation is a relatively new separation technology that can solve a large number of problems that traditional distillation technology cannot solve. Molecular distillation is a special liquid-liquid separation technology that can be carried out under a vacuum. According to the difference in the mean free path of molecular motion, it can separate liquids at temperatures far below the boiling point. It is particularly suitable for the separation of high boiling point, heat-sensitive, and easily oxidized systems. Since short-range distillation has the characteristics of distillation temperature lower than the boiling point of the material, low distillation pressure, short heating time, and high separation, it can greatly reduce the technical difficulty of separating high-boiling point materials and heat-sensitive materials, and protect the characteristic quality of heat-sensitive materials. Molecular distillation equipment is especially used for the extraction of natural health products, which can get rid of the limitations of chemical treatment methods and truly maintain natural properties.
Short-range molecular distillation molecular collision process: There is an interaction force between molecules. When two molecules are far away, the attraction between molecules is the main one. But when the two molecules approach each other to a certain distance, the force between the molecules will change to repulsion, and it will increase rapidly with their proximity. When they are close to a certain degree, due to the action of repulsion, the two molecules are repelled. This process of repulsion due to proximity is the collision process of molecules.
The principle of laboratory molecular distillation: According to the theory of molecular motion, liquid molecules escape from the liquid surface when heated. Different types of molecules have different mean free paths. In order to achieve the purpose of separation, the liquid mixture is first heated, and the molecules with sufficient energy escape from the liquid surface. The mean free path of light molecules is large, and the mean free path of heavy molecules is small. If a condensation surface is set at a distance from the liquid surface that is less than the mean free path of light molecules but greater than the mean free path of heavy molecules, the light molecules fall on the condensation surface and are condensed, thereby destroying the dynamic equilibrium of the light molecules and causing the light molecules to continue to escape. The heavy molecules, because they cannot reach the condensation surface, quickly tend to dynamic equilibrium. In this way, the mixture is separated. Since light molecules are condensed after only a short distance, molecular distillation is also called short-range distillation.