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The principle of rotating evaporator.

Jul. 17. 2023

Rotating evaporator

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Rotating evaporator is an advanced evaporation technology widely used in fields such as chemical, pharmaceutical, and food. Its emergence has revolutionized traditional evaporation methods and has the advantages of high efficiency, energy conservation, and environmental protection.


The rotary evaporator utilizes the thin film formed on the inner wall of the rotating sphere to quickly evaporate the liquid, achieving the purpose of separating pure solvents and solid substances. 


The main principles include:

Rotation acceleration: The rotation of the inner wall of the sphere accelerates the contact between the liquid and the wall, accelerating the evaporation rate.

Thin film formation: The liquid forms a uniform thin film along the inner wall of the sphere, increasing the evaporation surface area.

Heating conduction: By conducting heat between the wall and the inner ring, the solvent in the film evaporates rapidly.