Hot air speed effect of centrifugal spray dryer

Hot air speed effect of centrifugal Spray Dryer

Centrifugal spray dryer plays an important role in many industries such as chemical industry and food industry. It can quickly dry liquid or slurry materials into powdered products. In this process, the air outlet speed is an important parameter that cannot be ignored.

Air outlet speed refers to the discharge speed of the air inside the centrifugal spray dryer after passing through the material drying area. This parameter is directly related to the residence time of materials in the equipment, drying efficiency, and particle size distribution of the product. A suitable air outlet speed can ensure sufficient and uniform drying of materials, while also ensuring product quality and yield.

Influence of air outlet speed on spray drying effect:

1. Retention time: the faster the air outlet speed is, the shorter the retention time of materials in the centrifugal spray dryer is. This may result in some materials not being fully dried, affecting product quality.

2. Drying efficiency: An appropriate air outlet speed is beneficial for removing moisture from the surface of the material and improving drying efficiency. However, excessively high air outlet speed may cause the surface moisture of the material to evaporate too quickly, while the interior remains moist, resulting in the phenomenon of "dry outer layer and wet inner layer".

3. Product granularity: The air outlet speed also has an impact on the granularity distribution of the product. Excessive air velocity may cause the material to break during the drying process, resulting in the production of more fine powder.