Hebei Yunrui Chemical Equipment Co., LtdGeneral contractor of industrial evaporation, crystallization,
drying and tower.
中文(簡體) 
Product Display
Scraper film evaporator is a highly adaptable evaporator, suitable for materials with high viscosity, thermal sensitivity, and easy crystallization and scaling. Especially suitable for evaporation concentration, degassing and desolvation, and distillation purification of heat sensitive materials, high viscosity materials, and easily crystallized granular materials.
working principle
Due to the movement of the scraper, the material is continuously scraped into a thin film on the evaporation surface to achieve the effect of thin film evaporation. Steam is a commonly used heat medium. By reducing the boiling point of the material, the temperature of the heating medium can be lowered while ensuring the same Δ t. Utilizing low-grade steam is beneficial for the comprehensive utilization of energy. Specially suitable as a final effect evaporator for multi effect evaporation. It can also be used for materials that are prone to foaming and scaling. The scraper type thin film evaporator consists of a shaft, a liquid distribution plate, a scraper, bearings, a shaft seal, an evaporation chamber, and a jacket heating chamber. There are generally two types: vertical and horizontal.
Performance characteristics
The scraper film evaporator has the following characteristics:
1. The heat transfer coefficient value is high, the evaporation capacity is large, the evaporation intensity can reach 200kg/m2 • hr, and the thermal efficiency is high.
2. The heating time of the material is short, between about 5 seconds and 10 seconds, and it works under vacuum conditions, which is more advantageous for thermosensitive materials, keeping various components from decomposing and ensuring product quality.
3. Suitable for a wide range of viscosity, it can handle both high and low viscosity materials, with material viscosity up to 100000 centipoise (CP).
4. Changing the rotation direction of the scraper groove can adjust the residence time of the material in the evaporator.
5. The inner wall of the evaporation section cylinder is precision bored and polished, making the surface less prone to coking and scaling.
6. Easy to operate, easy to adjust product indicators, and capable of continuous production under closed conditions with self-control.
7. The equipment has a small footprint, simple structure, easy maintenance, and easy cleaning.
Adapt to materials
The scraper type thin film evaporator is an efficient evaporation and distillation equipment that uses high-speed rotation to distribute liquid into a uniform thin film for evaporation or distillation. It can perform deodorization, defoaming reactions, heating, cooling and other unit operations. It can also form a thin film even at low flow rates. The sediment in the treatment liquid attached to the inner wall surface of the evaporation section of the cylinder can be quickly removed by the movable scraper. Compared with the fixed gap scraper evaporator, the evaporation capacity can be increased by 40-69%. It can adapt to a wide range of viscosity changes and can handle both high and low viscosity materials. The material viscosity can reach up to 100000 centipoise. Capable of operating under truly high vacuum conditions
