Screw Film Evaporator

Screw Plate Film Evaporator

Product Overview
Screw-plate film evaporators are a type of evaporation and distillation equipment that use high-speed rotation to distribute liquids into a uniform film for evaporation or distillation. They can also be used for deodorization, de-bubbling reactions, and unit operations such as heating and cooling. They are widely applicable in industries such as food, light industry, petrochemical, and chemical industries.

Performance and Features
 This equipment features a centrifugal sliding groove rotor, capable of forming a film even at low flow rates. The adhered sediment in the wall surface of the cylinder's evaporating section can be quickly removed by an active scraper. Compared to a scraper evaporator with fixed gaps, the evaporation rate can be increased by 40-69%. It possesses the following performance and characteristics:
1. High thermal conductivity, large evaporation capacity, with evaporation intensity up to 200 kg/m³²· High thermal efficiency.
2. Material heating time is short, approximately 5 to 10 seconds, and operates under vacuum conditions, benefiting heat-sensitive materials. It maintains all components from any decomposition, ensuring product quality.
3. Wide range of viscosity adaptability; can handle both high and low viscosity materials; material viscosity can reach up to 100,000 centipoise (CP).
4. Changing the scraper groove rotation direction can adjust the material residence time in the evaporator.
5. The inner wall of the evaporator tube body is precision bored and polished, making the surface less prone to scaling and fouling.
6. User-friendly operation, easy to adjust product specifications, and capable of continuous production under sealed conditions.
7. The equipment occupies a small footprint, features a simple structure, is easy to maintain, and clean.

Key Technical Specifications

Industry Applications and Operational Unit Examples