Description & Specifications
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A Falling Film Evaporator is used for concentration and evaporation of relatively low viscosity liquids. Steam, hot water or hot oil is used as the heating media and the process is carried out under atmospheric or vacuum condition. The Evaporator is used for volume reduction where dilute products are concentrated to a medium concentration. The process is continuous. The liquid to be concentrated is fed from the top and a distributor ensures proper feed distribution in each of the tubes. The distributor also ensures that all tubes are wetted and that the liquid flows in a film. The liquid and vapour both travel vertically downward. Due to a relatively thin film, the heat transfer coefficient is better than that obtained in reactors and simple shell and tube evaporators. If further concentration is required, the concentrated product can then be fed to the WFE. Total Solutions Dalal Engineering supplies complete systems consisting of one or more wiped film evaporators, falling film evaporators, auxiliary condensers, sub-coolers, receivers for residue and concentrate, vent condenser, vacuum system, interconnecting piping with instrumentation, valves etc. A prototype Wiped Film Evaporator system is available at its Thane factory where trials can be conducted to determine feasibility and equipment with guaranteed performance can be offered. Technical Specifications Evaporator area m2 0.45Â 1.0 Â 2.0 Â Â Â 3.0 Â Â 5.0 7.5 Â Â 12.0 Â Â 20.0 A (Square Cut-Out)Â 660 Â Â Â 1010 Â 1010 Â 1320 Â Â 1320 Â Â Â 1320 Â Â 1650 Â Â 1895 B Â Â Â 1190 Â Â Â Â 1710 Â Â Â Â 1760Â Â Â Â Â 1800 Â Â 1885 Â Â Â 2249 Â Â 2604 Â 3360 C 616 1295 1770 1460 2205 2877 Â Â Â Â Â Â Â Â Â 3590 Â Â 5155 D 480 900 1200 1130 1190 2600 3000 Â Â Â Â Â Â Â Â Â Â Â 2050 E 600 1000 1900 1690 2100 3000 3625 Â Â Â Â Â Â Â 4000 Other sizes available as per requirement. Internal condenser optional. |