The tubular Falling Film Evaporator is specifically suited for processing temperature sensitive products with a low viscosity and tendency for fouling. The liquid to be concentrated is fed to the top of the Calandria and properly distributed in such a way as to falling, feed in-side the tubes will form a thin layer in-side tube. Because of external heating, liquid film starts to evaporate.
The downward flow, caused initially by gravity, is enhanced by the parallel, downward flow of the vapours formed. Residual film liquid and vapour is separated in the lower part of the Calandria and in the downstream Vapour Separator. The total system is operating under vacuum depending upon the application.
Features:
Design Features: High heat transfer coefficient, Thermal vapour re-compression, short residence time
Multiple Effects used for the steam economy
Operate under vacuum
Fouling across the tube is less
Easy to Start, Operate, Clean and
Low Pressure drops
Applications:
For liquids which contain small quantities of solids and have a low to moderate tendency to form encrustations
Dairy Industries for milk concentration
Food industries: Juice concentration
Low Concentration RO reject Concentration
Chemical product
Pharmaceutical product Concentration
Treatment Requirement
Oil & grease Separation
Neutralization of Acids and Alkali
Removal of Suspended Solids
Reduction & Removal of metallic impurities
Reduction of high organic content: BOD, COD, Phosphorus (P), Total Kjeldahl