Enhanced Heat Exchanger

Falling Film Evaporator

iconicon

Technical Principles

A falling film evaporator is a vertical high-efficiency evaporation equipment, mainly composed of three parts: a distributor and film-spreading device, an evaporation chamber, and a separation chamber. In the evaporator, the feed liquid is uniformly distributed as a thin film on the inner wall of the heat transfer tubes via the distributor and film-spreading device, and is heated and evaporated while flowing downward.

Performance Advantages

Ultra-thin liquid film (0.1–2 mm):
Extremely low thermal resistance, the overall heat transfer coefficient is 50%–80% higher than that of the immersed type.
No boiling point elevation caused by static head:
The material does not fill the tube, achieving high utilization of effective temperature difference; stable evaporation can be realized at a small temperature difference of only 4–5℃.

Technical Performance

Sprayer Size Design
Distributor Plate Type & Size Design
Tube End Distributor Type & Size Design
Actual Liquid Flow / Minimum Film-forming Liquid Flow q/qmin

Typical Applications