Principle and performance characteristics of centrifugal spray dryer

The principle of Centrifugal Spray Dryer:

After filtering and heating, the air enters the air distributor at the top of the Dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer at the top of the tower body, and is sprayed (rotating) into extremely fine mist-like liquid droplets, which can be dried into finished products in a very short period of time in co-current contact with hot air. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is evacuated by the fan.

Features of centrifugal Spray Dryer:
◎The drying speed is fast, and the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95%-98% of the water can be evaporated instantly, and the drying time is only a few seconds, especially for the drying of heat-sensitive materials.
◎The product has good uniformity, fluidity and solubility, high product purity and good quality.
◎The production process is simplified and the operation and control are convenient. For liquids with a moisture content of 40-60% (special materials can reach 90%), it can be dried into powder products at one time. After drying, there is no need to pulverize and screen, reducing production processes and improving product purity. The particle size, bulk density and water content of the product can be adjusted by changing the operating conditions within a certain range, and the control and management are very convenient.

◎ The amount of water evaporation is related to the characteristics of the material and the temperature of the hot air inlet and outlet.

Ordering instructions:

◎Material liquid name, physical properties: solid content (or water content), viscosity, surface tension, PH value.
◎Dried powder capacity, allowable residual water content, particle size, allowable high temperature.
◎Production, working hours every day.
◎Available energy: steam pressure availability, electrical capacity, coal, oil, and gas consumption.
◎Control requirements: Whether the inlet and outlet temperatures need to be controlled automatically.
◎Powder collection requirements: whether to install a bag filter, the environment has requirements for exhaust gas.
◎Other special requirements.