Suitable for materials with high viscosity, thermal sensitivity, and easy crystallization and scaling, it mainly consists of a heating jacket or staggered evenly distributed scraper. The jacket is filled with heating steam, and the scraper is mounted on a rotatable shaft. After preheating, the material liquid enters the feeding tray along the tangent direction from the upper part of the evaporator,It is a single evaporator that utilizes external power to form a film.
1The heat transfer coefficient value is high, the evaporation capacity is large, the evaporation intensity can reach 100kg/m2 · hr, and the thermal efficiency is high.
2The heating time of the material is short, about 5 seconds to 10 seconds, and it works under vacuum conditions to ensure product quality.
3The viscosity of the material can reach up to 100000 centipoise (CP)
4Changing the scraper groove and rotation direction can fine tune the processing time of materials in the evaporator.
5The inner wall of the evaporation section cylinder (after welding) is precision bored and polished, making the surface less prone to coking and scaling.
6Easy to operate, easy to adjust product indicators, and capable of continuous production under closed conditions with self-control.
7The equipment has a small footprint, simple structure, easy maintenance, and easy cleaning.
Performance characteristics
Thin film evaporators have a large space for gas to pass through;
It can be maintained at a high vacuum degree, with a low boiling point of the material, and carried out at a lower temperature, reducing the thermal decomposition of the product;
Short heating time, due to the high-speed turbulence of the film, the product will not remain on the surface of the evaporator, especially suitable for the evaporation of thermosensitive materials;
The scraper reduces the thickness of the turbulent liquid film and lowers the thermal resistance;
During this process, the suppression of material wall and scaling on the heating surface increased the overall heat transfer coefficient of the scraper;
Due to its unique performance, the scraper is suitable for handling materials that are heat sensitive, require smooth evaporation, have high viscosity, contain solids, and are prone to crystallization
Technical parameters:
0.5 m2 | 1 m2 | 2 m2 | 3 m2 | 6 m2 | 8 m2 | |
Heating m2 | 0.5 | 1 | 2 | 3 | 6 | 8 |
Condensation m2 | 1.5 | 3 | 5 | 8 | 16 | 22 |
Inner liner mm | 219 | 300 | 400 | 500 | 700 | 800 |
Power kW | 0.55 | 1.1 | 2.2 | 3 | 5.5 | 7.5 |
Feed rate L/h | 50 | 100 | 200 | 300 | 600 | 800 |
Liquid receiving tank L | 50 | 50 | 200 | 200 | 300 | 500 |