Plate Evaporator

Working principle of a plate evaporator

The rising film plate evaporator ingeniously combines the compactness and efficiency of the plate heat exchanger with the powerful momentum of the rising film evaporation principle.

Bottom feeding and preheating: The material liquid to be treated enters our specially designed plate heat exchanger group from the bottom of the evaporator.

Intense heating and boiling: In the narrow flow channels between the plates, the material liquid is rapidly heated to a boiling state by the heating medium (usually steam), generating a large number of steam bubbles.

Steam pulling to form a liquid film: These rapidly rising steam bubbles merge and expand, generating a powerful pulling force within the narrow flow channel, acting like an efficient "gas piston", driving the liquid to form a thin liquid film that rapidly climbs upward along the surface of the plate.

Continuous evaporation and separation: During this process, the liquid film is continuously heated and rapidly evaporates. Ultimately, the gas-liquid mixture is discharged from the top and enters the separator, achieving efficient separation of the concentrated liquid from the secondary steam.

The core driving force: The kinetic energy generated by the steam phase change is the key to our film formation, not gravity.