Film Evaporator

Working Principle

The concentrated liquid is pumped into the top of the heating tube, forming a liquid film that flows downward along the inner wall of the tube. During this process, due to external heating, the liquid film inside the tube begins to boil and partially evaporate. In the lower section of the tube and in the downstream separator, the remaining liquid and steam are separated.

Properly determine the fluid flow rate inside the heat exchange tubes to prevent dry areas at the bottom of the tubes, while ensuring adequate liquid film thickness, thus achieving effective heat exchange and minimizing energy consumption.

Membrane evaporators can perform both recirculating and single-pass evaporation.

Application Scope

Single unit processing capacity up to 200T/H

Suitable for thermosensitive materials

Suitable for low concentration, low solid content materials with low scaling tendency.

Product Features

High thermal conductivity, small temperature difference, vacuum evaporation.

Ensure the material remains in a suitable boiling state within the heat exchange tubes, to avoid dry wall and scaling due to violent vaporization.

No liquid column-induced boiling point temperature difference loss, low circulation volume, and minimal power consumption.