Screw-type Evaporator

Product Overview
Screw blade 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, degassing reactions, as well as heating and cooling operations. 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, which can still form a film even at low flow rates. The sediment in the treatment liquid adhering to the inner wall surface of the drum's evaporating 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 boasts the following performance and features:
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, approximately 5 to 10 seconds, and operates under vacuum, benefiting heat-sensitive materials. It ensures that various components do not decompose, guaranteeing 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's 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. Easy to operate, with simple product specification adjustments. Under sealed conditions, it can automatically perform continuous production.
7. The equipment occupies a small footprint, features a simple structure, is easy to maintain, and clean.

Primary Technical Parameters

Application Industries and Example Operating Units