Application for Thin-Film Evaporators

HIGH SPEED SCRAPED SURFACE HEAT EXCHANGER 

LOir SPEED SCRAPED SURFACE HEAT EXCHANGER (WITHOUT JACKET) 

Cartridge-Type Double Mechanical Seal Motor 

Fixed Clearance with Residence Time Control Ring 

Materials that Tend to Foul. Because of high turbulence imparted by the rotor and excellent localized mixing, fouling of the thermal surface is not generally a problem with thin-film evaporators. Approximately ten rotor blades pass each point on the heat transfer surface every second and the surface is washed each time. 

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Application for Thin-Film Evaporators Thermal separation in an evaporator may be conveniently characterized by the viscosity of the nonvolatile stream—the concentrate. Figure 11-27 illustrates various evaporator types and typical viscosity ranges for their useful applications. Unless other considerations are important (thermal stability, fouling tendencies), the terminal viscosity frequently dictates the type of evaporator selected. By far, most evaporation... 

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