The market field of airflow spray dryer is reflected: in the contact with hot air, the water vaporizes rapidly, that is, a dry product is obtained. It moves along the tangential direction of the disc, and at the same time, the droplets fall down due to the force of gravity, due to the different sizes of the sprayed particles. Spray drying equipment can change the operating conditions in a wide range to control the quality indicators of products, such as particle size distribution, moisture content, biological activity, solubility, color, aroma, taste, etc., with fast heat transfer, rapid water evaporation, drying time Short characteristics, and the product quality is good, the texture is crunchy, and the dissolution performance is also good, which can improve the dissolution rate of some preparations, and is suitable for heat-sensitive drugs. In addition, spray drying can also be used to prepare microcapsules. The spray drying equipment uses compressed air or water vapor to atomize the material liquid, and through mechanical action, the material to be dried is dispersed into very fine mist-like particles, (increasing the area of water evaporation and accelerating the drying process) and hot air. In contact, most of the water is removed in an instant, so that the solid matter in the material is dried into powder.
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