Plate Evaporator
Working Principle
In plate falling film evaporation, the feed liquid is introduced from the top of the heating section. Through liquid distribution and film-forming devices, it is evenly distributed to the outer sides of the heat exchange plates. Under the combined effects of gravity, vacuum induction, and airflow, the liquid forms a uniform film that flows downward. During this flow, it is heated and vaporized by the heating medium inside the plates. Within the large-volume evaporation station, the vapor and liquid phases are thoroughly separated. The vapor then enters the condenser for condensation (in single-effect operation) or proceeds to the next evaporator to serve as the heating medium, enabling multi-effect operation. The liquid phase is discharged from the bottom of the evaporation station.
Shennong Co., Ltd. designs and manufactures plate falling film evaporators, which are widely used in fields such as paper pulp, lyocell solvents, and wastewater treatment. These systems offer the following technical advantages:
Special Characteristics
High heat transfer coefficient
Particularly suitable for heat-sensitive materials and fluids with viscosity below 500 cP
Applicable to solutions containing a small amount of solids
Suitable for designs with smaller temperature differences
Requires stable circulation or feed flow rates
Low secondary steam velocity, resulting in minimal liquid entrainment
Optimized streamlined heat transfer surfaces with redistribution capability
Planar heat transfer structure, facilitating easy removal of scaling layers
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