Three stages of filter spray dryer drying technology

- Jun 29, 2019-

When using a filter spray dryer, the whole process can be divided into three stages. The first is the atomization of the liquid. The contact between the droplets and the droplets and the hot air is important for the principle of the filter spray dryer. feature. The purpose of atomization is to disperse the liquid into fine droplets, which have a large surface area. When contacted with hot air, the moisture in the droplets is rapidly vaporized and dried into powdery particles. The size and uniformity of atomization is especially important for product quality, especially for heat sensitive materials.


The second is the contact and mixing process of the mist and the hot air, which are carried out in the drying tower. The flow of the droplets and the air has a cocurrent, countercurrent and mixed flow. The movement of the droplets and the drying process determine the size of the spray dryer and the drying time.


In addition, the material of the filter spray dryer is separated from the hot air. Most of the material is discharged from the bottom of the tower, and some fine powder is trapped in the exhaust gas. These fine powders must be collected before the exhaust gas is discharged. Improve product efficiency, reduce product cost, and maximize