spray dryer mechanical design

      The first one is fast drying. After the material liquid is sprayed by centrifugal spray, the specific surface area is greatly increased, 95-98% of water can be evaporated immediately in the high temperature air flow, and the drying time is only a few seconds.

Laboratory centrifugal spray dryer drying room

      Second, the centrifugal spray dryer can use the co-current spray drying method to make the droplets flow in the same direction as the hot air. Although the temperature of the hot air is high, the hot air enters the drying chamber and immediately comes into contact with the spray. The material overheats and is therefore particularly suitable for drying heat-sensitive materials.

      Third, it has a wide range of applications. According to the characteristics of the material, it can be dried with hot air or molded with cold air. This product can produce many products with different characteristics. Commonly used are: polymers and resins, dyes, pigments, glass, rust inhibitors, pesticides, carbohydrates, dairy products, slaughterhouse by-products, blood and blood products, detergents and surfactants, fertilizers, organic compounds , Inorganic compounds, instant foods, medicines, etc.

      Fourth, since the drying process is completed immediately, the particles of the product basically keep the droplets approximately spherical, with good dispersibility, fluidity and solubility.

      Fifth, it simplifies the production process and facilitates operation and control. Spray drying is usually used for solutions with a moisture content of 40-06%. Even if the content of special materials is as high as 90%, they can be dried into powder products at one time. Most products do not need to be crushed and sieved after drying, thereby reducing and simplifying the production process, thereby increasing the purity of the product. The particle size, bulk density, moisture and operating conditions of the product can be adjusted and controlled within a certain range. Easy to manage.

Laboratory centrifugal spray dryer equipment

      Sixth. In order to prevent the material from being contaminated and extend the life of the equipment, all parts in contact with the material are made of stainless steel. For ease of operation, the control system adopts integrated operation.

Equipment principle and architecture diagram of laboratory centrifugal spray dryer:

      After the air passes through the filter and heating device, it enters the hot air distributor on the top of the drying chamber of the centrifugal spray dryer. The hot air passing through the hot air distributor enters the drying chamber evenly in a spiral shape. At the same time, the pump sends the liquid to the centrifugal sprayer installed at the top of the drying chamber. In the head, the liquid material is sprayed into very small mist droplets, which greatly increases the specific surface area of the liquid material in contact with the hot air. The droplets sink in parallel with the hot air, and the water evaporates quickly and dries into particles in a short time. It is collected at the bottom of the tower and cyclone separator, and the exhaust gas is discharged to the outside.

Equipment architecture diagram of laboratory centrifugal spray dryer