Agitated Film Evaporator

Agitated Thin-Film Evaporators: Concentrating Viscous Fluids

Overview of Agitated Thin-Film Evaporators

• Agitated thin-film evaporators are utilized for concentrating very viscous fluids, where the feed is spread on the inside of a cylindrical heating surface.

• Wiper blades rotate to continuously scrape the inside surface of the heating cylinder, enhancing heat transfer efficiency.

• The agitation created by this process results in high convective heat transfer coefficients, which are crucial for processing high-viscosity liquids.

System Configuration and Limitations

• The cylindrical design implies a relatively low heating surface area, necessitating longer residence times for effective processing.

• Due to these limitations, the processing capacity of agitated thin-film evaporators tends to be low.