Evaporation Technology is a process in which the liquid feed is introduced into the upper header box of the heating chamber of a falling film evaporator, and then evenly distributed to each heat transfer tube by a liquid distribution and film-forming device. Under the effects of gravity, vacuum induction, and gas flow, the liquid forms an even film that flows down from top to bottom. In the distillation unit, the vapor phase directly enters the tower for distillation, while the liquid phase is discharged from the separation chamber or circulated back into the evaporator by the pump.

Process Calculation: based on the calculation of advanced simulation software, key parameters such as gasification rate, circulation volume, flooding factor, gas-phase rate, heat exchange area, etc. are determined.

Design conditions:

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Various hydraulic models are conducted to design distribution system under specific operation conditions, further more hydraulic calculation is operated with independent software.

With rich experience and advanced technology, DODGEN falling film evaporator has been applied in various fields of heat-sensitive substances separation, the temperature of tower kettle is reduced, thus improving product quality and yield, and obtaining positive feedback from customers.

Applications of Evaporation Technology

MDI distillation

Hydrogen peroxide rectification

MVR evaporation

chemical process pdf