Types of atomizers for small spray dryers
1. Centrifugal atomizer: using high-speed rotation to generate shear force, the liquid will be dispersed into fine droplets. It is characterized by simple structure and easy maintenance, but the atomization effect is greatly affected by the viscosity of the liquid.
2. Pressure type atomizer: The liquid is delivered to the nozzle through a high-pressure pump to form fog droplets. This type of atomizer is suitable for high viscosity liquids, but requires high pressure stability of the pump.
3. Airflow atomizer: the use of compressed air at high speed from the nozzle spray, and with another channel conveying the material mixture, with the relative speed between the gas-liquid phase of the friction generated by the difference between the two phases of the liquid, so that the material is split into droplets.
 
Types of drying towers for small spray dryers
The internal material of the drying chamber should have good corrosion resistance and high temperature resistance to adapt to different drying environments, the common ones are stainless steel drying tower, Plexiglas drying tower and so on.
 
Different heating methods for small spray dryers
1. Electric heating: through the electric energy to produce heat, dry materials. Simple operation, easy to control, but the thermal efficiency is relatively low.
2. Steam heating: steam heating is a more common heating method, through the introduction of steam to heating. This way of high thermal efficiency, suitable for large-scale production, but requires a stable supply of steam.