Screw-type Evaporator

Product Overview
Screw blade film evaporators utilize high-speed rotation to distribute liquids into a uniform film for evaporation or distillation. They can also be used for deodorization, degassing 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 employs a centrifugal sliding groove rotor, capable of forming a thin film even at low flow rates. The adhered sediment in the inner wall surface of the drum's evaporating section can be quickly removed by the movable scraper. Compared to a fixed gap scraper evaporator, its 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/m²·hr, and high thermal efficiency.
2. Short material heating time of approximately 5 to 10 seconds, operating under vacuum, which is beneficial for heat-sensitive materials. It ensures that various components do not decompose, thereby 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 section cylinder has been precisely bored and polished, making the surface less prone to coking and scaling.
6. Easy to operate, with simple adjustment of product specifications. Under sealed conditions, it can self-regulate for continuous production.
7. The equipment has a small footprint, simple structure, easy maintenance, and straightforward cleaning.

Primary Technical Parameters

Application Industries and Example Operating Units