product description
Spray drying is a widely used process in the liquid process forming and drying industries. It is especially suitable for the production of powdery, granular solid products from solutions, emulsions, suspensions and paste liquids. Therefore, spray drying is a better process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet high standards.
working principle
The air is filtered and heated into the air distributor at the top of the dryer, and the hot air enters the drying chamber in a spiral shape evenly. The liquid is sprayed into a very fine misty liquid droplet through a high-speed centrifugal atomizer at the top of the tower body, and it can be dried into a finished product in a short time by cocurrent contact with hot air. The finished product is continuously discharged from the bottom of the drying tower and the cyclone, and the exhaust gas is evacuated by the fan.

Performance characteristics

◎The drying speed is fast, the surface area of the liquid is greatly increased after atomization. In the hot air flow, 95%-98% of the water can be evaporated in an instant, and the drying time is only a few seconds, which is especially suitable for the drying of heat sensitive materials.
◎The product has good uniformity, fluidity and solubility, and the product has high purity and good quality.
◎ Simplified production process and convenient operation and control. For liquids with a moisture content of 40-60% (up to 90% of special materials), it can be dried into a powder product at one time. After drying, no pulverization and screening are required, which reduces the production process and improves the purity of the product. The particle size, bulk density and moisture of the product can be adjusted within a certain range by changing the operating conditions, and the control and management are very convenient.
Adaptable material
Chemical industry: sodium fluoride (potassium), basic dye pigments, dye intermediates, compound fertilizers, formaldehyde silicic acid, catalysts, sulfuric acid agents, amino acids, silica, etc.
Plastic resin: AB, ABS emulsion, urine aldehyde resin, phenolic resin, dense (urea) formaldehyde resin, polyethylene, polyvinyl chloride and the like.
Food industry: fat-rich milk powder, scorpion, cocoa milk powder, milk replacer powder, blood-hunting powder, egg white (yellow) and so on.
Food and plants: oats, chicken juice, coffee, instant tea, flavored meat, protein, soy, peanut protein, hydrolysate, etc.
Sugar: corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, etc.
Ceramics: alumina, ceramic tile, magnesium oxide, talc, etc.

Technical specifications

Note: The amount of water evaporation is related to the characteristics of the material and the hot air inlet and outlet temperatures. When the outlet temperature is 90oC, the water evaporation curve is shown in the above figure (for selection). As the product is continuously updated, the parameters are subject to change without prior notice.
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◎ Name of material and physical properties: solid content (or water content), viscosity, surface tension, and pH.
◎ powder capacity after drying, allowable residual water content, particle size, allowable temperature upper limit.
◎ Production, daily opening hours.
◎ Available energy: vapor pressure available, capacity, available for coal, oil, gas.
◎ Control requirements: Whether the inlet and outlet temperatures need to be controlled automatically.
◎Powder collection requirements: Whether to install a bag trap, the environment requires exhaust gas.
◎ Other special requirements.

Technical specifications

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  离心喷雾干燥机
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  离心喷雾干燥机

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