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Product introduction

　　Spray drying is widely used in liquid forming and drying industries. It is suitable for generating powder and granular solid products from solution, lotion, suspension and paste liquid raw materials. Therefore, spray drying is a very ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet accurate standards.
Working principle
　　After filtering and heating, the air enters the air distributor at the top of the dryer, and the hot air enters the drying chamber evenly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer on the top of the tower body, and (rotating) spray into extremely fine mist like liquid beads, which can be dried into finished products in a very short time in parallel 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 discharged by the fan.
Performance characteristics

◎ The drying speed is fast, and the surface area of the material liquid after atomization is greatly increased. In the hot air flow, 95% - 98% of the water can be evaporated instantly, and the drying time is only a few seconds, especially suitable for the drying of heat-sensitive materials.

◎ The product has good uniformity, fluidity and solubility, high purity and good quality.

◎ The production process is simplified and the operation and control are convenient. The liquid with a moisture content of 40-60% (up to 90% for special materials) can be dried into powder products at one time, without crushing and screening after drying, reducing production processes and improving product purity. The particle size, bulk density and moisture of the product can be adjusted by changing the operating conditions within a certain range, which is very convenient for control and management.

Applicable materials

Chemical industry: sodium fluoride (potassium), basic dye pigments, dye intermediates, compound fertilizers, formaldehyde silicic acid, catalysts, sulfuric acid agents, amino acids, white carbon black, etc.

Plastic resin: AB, ABS lotion, urea formaldehyde resin, phenolic resin, sealant (urea) formaldehyde resin, polyethylene, PVC, etc.

Food industry: fat-rich milk powder, gluten, cocoa milk powder, milk substitute, blood hunting powder, egg white (yellow), etc.

Food and plants: oats, chicken juice, coffee, instant tea, spice meat, protein, soybean, peanut protein, hydrolysate, etc.

Sugar: corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, etc.

Ceramics: alumina, ceramic tile materials, magnesium oxide, talcum powder, etc.

Ordering instructions

◎ Material liquid name and physical properties: solid content (or water content), viscosity, surface tension, PH value.

◎ Dry powder capacity, allowable residual water content, particle size, and allowable maximum temperature.

◎ Output and daily shift time.

◎ Available energy: steam pressure, capacitance, coal, oil and gas.

◎ Control requirements: whether the inlet and outlet temperatures need automatic control.

◎ Requirements for dust collection: whether to install bag filter or not, and the environment has requirements for exhaust emission.

◎ Other special requirements.

Note: The water evaporation is related to the characteristics of the material and the temperature of the hot air inlet and outlet. When the outlet temperature is 90^oC, the water evaporation curve is shown in the figure below (for model selection reference). As the product is continuously updated, the relevant parameters are subject to change without prior notice.