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LPG series high-speed centrifugal spray dryer

Overview:Product descriptionSpray drying is a more widely used process in the liquid process forming and drying industry. It is especially suitable for generating powdery and granular solid products from solutions, emulsions, suspensions and pasty liquid mater…


Product description
Spray drying is a more widely used process in the liquid process forming and drying industry. It is especially suitable for generating powdery and granular solid products from solutions, emulsions, suspensions and pasty liquid materials. Therefore, when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet high standards, spray drying is a better process.

Working principle
After filtering and heating, the air enters the air distributor on the top of the dryer, and the hot air enters the drying chamber evenly in a spiral shape. The material liquid passes through the high-speed centrifugal atomizer on the top of the tower body, and (rotating) sprays into very fine mist liquid beads, which can be dried into finished products in a very short time in cocurrent 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.

Performance characteristics

◎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. It is especially suitable for the drying of heat-sensitive materials.

◎The product has good uniformity, fluidity and solubility, 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% for special materials), they can be dried into powder products at one time, without crushing and screening after drying, reducing production procedures and improving product purity. The product particle size, bulk density and water content can be adjusted by changing the operating conditions within a certain range, and the control and management are very convenient.

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

Plastic resin: AB, ABS emulsion, urinary formaldehyde resin, phenolic resin, dense rubber (urea) formaldehyde resin, polyethylene, polyvinyl chloride, etc.

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

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

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

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

Circular static vacuum dryer

Technical specifications

Model/Item/Parameter 5 25 50 150 200-2000
Inlet temperature 140-350 Self-control
Output temperature 80-90
Upper limit of water evaporation (kg/h) 5 25 50 150 200-2000
Transmission form of centrifugal spray head Compressed air transmission Mechanical transmission
Maximum speed (r.p.m)
25000 18000 18000 15000 8000-15000
Diameter of spray disc (mm) 50 120 120 150 180-240
Heat source Electricity Steam + electricity Steam + electricity, oil, gas, hot air stove
Upper limit of electric heating power (kw) 9 36 72 99  
Overall dimensions (length × width × height) (m) 1.8×0.93×2.2 3×2.7×4.26 3.5×3.5×4.8 5.5×4×7 to be determined according to actual conditions
Dry powder recovery (%) ≥95

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

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◎Name of material and liquid, physical properties: solid content (or water content), viscosity, surface tension, PH value.

◎After drying, powder capacity, allowable residual water content, particle size, and upper limit of allowable temperature.

◎Production, daily working hours.

◎Available energy: steam pressure available, electric capacity, available for coal, oil and gas.

◎Control requirements: Whether the inlet and outlet temperatures need to be controlled automatically.

◎Powder collection requirements: whether to install bag traps, and environmental requirements for exhaust emissions.

◎Other special requirements.

Technical specifications

size A B C D E1 E2 F G H I
LPG-25 1290 3410 4260 1800 1200 1200 1000 1700 1300 1550
LPG-50 1730 4245 5100 2133 1640 1640 1250 1750 1800 1600
LPG-100 2500 5300 6000 2560 2100 2100 1750 1930 2600 1780
LPG-150 2800 6000 7000 2860 2180 2180 1970 2080 3050 1960
LPG-200 2800 6600 7300 3200 2300 2300 2210 2250 3050 2100
LPG-300 2800 8000 8700 3700 2800 2800 2520 2400 3040 2250

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