Melt Concentrator can be operated with very low temperature difference between the heating media and the boiling liquid.
It has very short retention time, typically just a few seconds. These characteristics make the falling film evaporator particularly suitable for heat-sensitive products, and are today the most frequently used type of evaporator.
Falling Film Evaporator is a device to concentrate juice, especially with heat sensitive materials.
Steam enters in the jacket through slots in calandria. Juice and vapor both flows downward in a parallel flow. This gravity-induced downward movement is increasingly augmented by the co-current vapor flow. Separation of vapor from concentrated juice by installing in-built vapor separator in juice tank/body of evaporator.
- Thin film of juice and absence of a hydrostatic head in the FFE tubes lead to better heat transfer.
- Minimal scale formation
- Better Evaporation Rate
- Complete wetting of Tubes
- Minimum ∆T i.e. 6 - 7°C
- Wetting Rate 16 - 18 l/cm/h
- Evaporation Rate 12 - 18 kg/m²/h
- Proper Melt/Syrup Distribution in each tube
- Vapor Separator inside the FFE, it requires less space
- Recirculation Inlet from the Top of the tower
- Tube Rinsing arrangement
- Fully Automated control system
Melt/Syrup Distribution system:
Notch is specially designed where juice falls as a droplet on tube sheet of ligament; therefore it works proper juice distribution in each tube