Spray drying is a most widely used process in liquid molding process and drying industry. It is ideal for producing powdery and granular solid product from the solution, emulsions, suspension liquid and paste liquid. Thus, when the particle size distribution, residual moisture content, bulk density and particle shape meet a precision standard, the spray drying is an ideal choice for drying.
1. The Enough Contact of the Heated Air with The Fog Droplet: The filtered and heated air goes into air distributor on the top of the dryer, and spirals into drying chamber uniformly. Going through thehigh-speed centrifugal atomizer on the top of tower, the liquid (rotates)sprays into extremely fine mist liquid beads, and can be dried completely in a short time in co-current contact with hot air.The enough contact of the heated air with the droplet will ensure fully heat exchange.
2. Atomizing Process: The atomizing system of the spray drying system must ensure the equal distribution of the fog droplet, which is of vital importance,because only in this way can it ensure the qualified rate of the product quality.
3. The finished products exhaust continuously from the bottom of the drying tower and cyclone separator, while the waste gases are vented by the fan.
1. Fast drying speed greatly increasing the surface area of the material after the liquid is atomized; it can instantly evaporate 95%-98% of water in the stream of hot air; it takes only a few seconds to complete drying,which is especially suitable for drying heat sensitive materials.
2. The final products have a good uniformity, mobility and solubility, highpurity and good quality.
3. Simplifying the production process, easy to operate and control. Liquid of 40-60% moisture content (up to 90% for special materials) can be dried into powder products at a time, without crushing and screening after drying, which reduces production process and improve product purity. The size, bulk density,moisture can be adjusted within a certain range by changing operation conditions. It is convenient to do control and management.