Screw Film Evaporator

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

Performance & Features
  This equipment uses a centrifugal sliding groove rotor, which can still form a thin film even at low flow rates. The sediment in the treated liquid adhering to the inner surface of the cylinder's evaporation section can be quickly removed by the moving scraper. Compared to a fixed-gap scraper evaporator, the evaporation capacity 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/m²·hr, and high thermal efficiency.
2. Short material heating time of approximately 5 to 10 seconds, operating under vacuum, benefits heat-sensitive materials by preventing any decomposition of various components, ensuring product quality.
3. Wide adaptability to viscosity range, capable of handling 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's residence time in the evaporator.
5. The inner wall of the evaporator cylinder body is precision bored and polished, making it resistant to scale and sediment buildup on the surface.
6. Easy to operate, with simple adjustment of product specifications. Under sealed conditions, it can self-regulate for continuous production.
7. The equipment occupies a small footprint, features a simple structure, is easy to maintain, and clean.

Key Technical Parameters

Application Industries and Operation Unit Examples