Low temperature spray dryer technology:

In traditional drying methods, drying time and drying temperature are usually contradictory: in order to shorten the drying time, a higher temperature needs to be used for drying; However, in order to ensure the quality of drying, using lower drying temperatures requires longer drying time, making it difficult to guarantee the quality of dried medicinal materials. Low temperature adsorption drying can maintain a high drying rate at lower drying temperatures, shorten drying time, reduce the loss of volatile oils, and overcome the above contradictions.

Low temperature spray dryer has good application in chemical industry, light industry, food industry and other industries due to its special advantages of obtaining powder products with uniform composition directly from solution or suspension system. The atomizers used are still pressure type, centrifugal type and air flow type, but in recent years, the application of centrifugal spray dryer is on the rise.

Advantages of low-temperature spray dryer:

Low temperature spray drying is a drying method that uses a atomizer to disperse the raw liquid into droplets and dry the droplets with hot gas (air, nitrogen or superheated steam) to obtain products. The raw material liquid can be a solution, emulsion, suspension, or a melt or paste. Dried products can be made into powder, granules, hollow spheres, or pellets as needed.

Advantages of low-temperature spray drying:

① Due to the large surface area of the droplet group, the drying time required for the material is very short (in seconds).
② In low-temperature airflow, the temperature of the material wetted on the surface does not exceed the wet bulb temperature of the drying medium. Due to rapid drying, the final product characteristics remain almost unchanged. Therefore, low-temperature spray drying is particularly suitable for heat sensitive materials.
③ According to the flexibility of spray drying operation, it can meet the quality indicators of various products, such as particle size distribution, product shape, product properties (excluding dust, fluidity, wettability, and instant solubility), product color, fragrance, taste, biological activity, and the wet content of the final product.
④ Simplify the process flow. The solution can be directly converted into powder products in the drying tower. Besides Spray drying is easy to realize mechanization and automation to reduce dust flying.