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Thin Film Evaporator

Thin Film Evaporator

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Film evaporator is a special liquid-liquid separation technology. Under high vacuum conditions, the mean free path of vapor molecules is greater than the distance between the evaporation surface and the condensation surface, and liquid mixtures can be separated by the difference in the evaporation rates of the materials and components in the liquid.

How it Works?


The QIYU agitated thin film evaporator consists of two major assemblies: a cylindrical heated body and a rotor.

Product is introduced above the heated zone and is evenly distributed over the evaporator's inner surface by the rotor. As the product spirals down the wall, the high rotor tip speed generates highly turbulent flow resulting in the formation of bow waves (see illustration right) and creating optimum heat flux and mass transfer conditions.

Volatile components are rapidly evaporated via conductive heat transfer. Vapors flow either counter-currently or co-currently through the unit, depending on the application requirements. In both cases, vapors are ready for condensing or subsequent processing (i.e. fractionation) after exiting the vapor discharge section.

Nonvolatile components are discharged at the outlet. Continuous agitation and mixing by the rotor blades minimizes fouling of the thermal wall where the product or residue is most concentrated.

More Products from Here


1.Our thin film evaporators are available Stainless Steel, Alloy, Borosilicate Glass and Glass-Lined

2.Perfectly adapted to a multitude of evaporation processes.

3.Avoid foaming.

4.Low residence time – Minimal residence time.

5.Fast and efficient heat transfer

6.Ability to process high-viscosity and high-solids materials

7.Ability to process materials that are sensitive to thermal degradation or prone to fouling

8.High evaporation ratios (>95%)

9.Easy to clean/maintain equipment


Film evaporator as a single evaporator materials within the membrane evaporator after heating chamber only once, can achieve concentrated demand, residence time and only a few seconds, the heat transfer effect is good, and the membrane flow, heat transfer coefficient is high, the evaporation capacity is strong, good effect of low temperature evaporation, material stay time is short, can reduce the effect of material properties loss, Therefore, it is suitable for concentrating heat-sensitive materials in chemical, light industry, pharmaceutical, food processing and concentration industries, and the film evaporator has the advantages of good corrosion resistance, stable operation and long time operation.

1.Distillation, separation, concentration, stripping, deodorisation, degassing, reaction

2.Heat-sensitive, viscous, fouling and foaming products

3.Continuous processing

A Complete Turn-key Solution

Across International distillation systems combine innovation with best-in-class performance, featuring improved 3.3 borosilicate. Designed for compounds of high viscosity and molecular weight, this semi-automated system is a complete turn-key solution for continuous distillate production. Optimized for operation at extreme vacuum, the system can reduce the boiling point of thermally sensitive products without decomposition.

thin distillation

Our total solution comes with all the required temperature control equipment and vacuum system, which can be used directly

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