Falling Film Evaporators

Falling film evaporators are typically used as reboilers for distillation columns. Liquid enters the unit at the top and boils inside the tubes, with a film of liquid developed around the inside periphery of the tube. When designing these units, the Bos-Hatten staff works closely with both the customer and HTRI to ensure that the unit is designed specifically to the needs of the customer. Our experienced design staff will ensure that the inlet bonnet is properly designed to provide equal distribution of the liquid across the tube bundle, ensuring a proper film of liquid is developed in each of the tubes.This ensures proper pressure drop and heat transfer on the tubeside. These units have been supplied in sizes ranging from 20" and below to upwards of 100" in diameter. These units are designed to ASME Section VIII, Div 1, API, and the most rigid of customer specifications.

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