Screw Film Evaporator

Scraper Membrane Evaporator

Product Overview

Screw blade film evaporators are a type of evaporation and distillation equipment that utilize 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 and Features
This equipment features a centrifugal sliding groove rotor, which can form a film even at low flow rates. The adhered sediments on the inner wall surface of the drum'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 boasts the following performance and features:
1. High thermal conductivity value, large evaporation capacity, with evaporation intensity up to 200 kg/m³²·HR, 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 adaptability to viscosity changes, 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 section cylinder has been precision bored and polished, making the surface less prone to coking and scaling.
6. Easy to operate, with simple product parameter adjustments. Under sealed conditions, it can perform continuous production with self-control.
7. The equipment occupies a small footprint, features a simple structure, is easy to maintain, and clean.

Primary Technical Parameters

Industry Applications and Example Operational Units