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ATFD- Agitator Thin Film Evaporator is stands for evaporation of water/solvents to make concentrated liquid to dry powder or flakes. ATFD is the ideal apparatus for continuous processing of concentrated material to dry solids.

ATFD is consist of cylindrical, vertical body with heating jacket and a rotor inside of the shell which is equipped with rows and pendulum blades all over the length of the dryer. The hinged blades spread the wet feed product in a thin film over the heated wall. The turbulance increases as the product passes through the clearance before entering calming zone situated behind the blades as the heat will transfer from jacket to main shell under the smooth agitation water/solvent will evaporate and liquid will convert to slurry, to cake or to dry powder or flex. 

The vapors produced rise upward, counter-curruentlyto the liquid and pass through Cyclone separator mounted of vapor outlet of ATFD. Further these vapor will be condensed in condenser and recovered as condensate. System will be Operated under vacuum for temerature sensitive products and atmospheric condition for normal drying. 

The Agitated Thin film evaporator (ATFE) consists of two major assemblies – jacketed shell and a rotor assembly which rotates at high speed inside the shell. The feed enters evaporator at top, tangential to shell and gets distributed along the shell by the distributor. The rotor blades spread the feed evenly on the heated surface into a thin film and further agitate the film. Heating medium passing through the jacket evaporates the volatile component in feed. The vapor generated flow counter currently to feed and gets cleared in entrainment separator before leaving through vapor nozzle. The concentrate product comes out at bottom. 

Salient Features

  • High Reliability 
  • Low Maintenance 
  • Low energy consumption 
  • Short residence time
  •  Single pass evaporation without re-circulation and or degradation.