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Centrifugal Spray Dryer

  •  Centrifugal Spray Dryer
  •  Centrifugal Spray Dryer
  •  Centrifugal Spray Dryer

The centrifugal spray dryer offers highly efficient and effective drying. 95-98% of moisture can be evaporated almost instantly during the hot air flow stage. This is especially suitable for drying heat sensitive materials.

Spray drying is the technology most widely used in the liquid shaping process and in the drying industry. The drying technology is most suitable for producing solid powder or particle products from liquid materials, such as: solution, emulsion, suspension and pumpable paste states.

Specification LPG
5 25 50 100 150 200-2000
Inlet temperature/℃ 140-350 (automatically controlled)
Outlet temperature/℃ ~80-90
Maximum Drying capacity 5 25 50 100 150 200-2000
Centrifugal nozzle transmission mode compressed air transmission Mechanical transmission
Rotating speed/rpm 25000 18000 18000 18000 15000 8000-15000
Diameter of spraying disc /mm 50 100 120 140 150 180-340
Heat supply Electric heater Electric heater and steam heater Electric heater, steam heater, heat transfer oil Others
Max. electric power /kw 9 36 63 81 99
Dimension /m 1.8×0.93 3×2.7 3.7×3.2 4.6×4.2 5.5×4.5 Depends on actual conditions
×2.2 ×4.26 ×5.1 ×6 ×7
Dried powder collecting rate % ≥95 ≥95 ≥95 ≥95 ≥95 ≥95
Note: As for Drying capacity, material property, inlet and outlet temperature, please refer to the following diagram.
Model 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 3050
The names according to the drawing:

1. Air filter
2. Heater
3. Hot air distributor
4. Dry cabinet
5. Filter
6. Pump
7. Nozzle
8. Cyclone separator
9. Fan
10. Liquid material tank

Machine Principle
After been filtered and heated the air enters into the air distributor on the top of the dryer. The hot air enters into the drying room in the spiral form uniformly. Passing through the high-speed centrifugal sprayer on the top of the tower, the material liquid will rotate and be sprayed into the extremely fine mist liquid beads. Through very short time of contacting the heat air, the materials can be dried into the final products. The final products will be discharged continuously from the bottom of the drying tower and from the cyclones. The waste gas will be discharged from blower.

1. The drying speed is high when the material liquid is atomized, and the surface area of the material will increase greatly. In the hot-air flow, 95%-98% of water can be evaporated at a moment. The time of completing the drying is only several seconds. This is especially suitable for drying the heat sensitive materials.
2. Its final products own the good uniformity, flow ability and solubility. And the final products are high in purity and good in quality.
3. The production procedures are simple and the operation and control are easy. The liquid with moisture contents of 40-60% (For special materials, the contents might be up to 90%.) can be dried into the powder or particle products once a time. After the drying process, there is no need for smashing and sorting, so as to reduce the operation procedures in the production and to enhance the product purity. The product particle diameters, looseness and water contents can be adjusted through changing the operation condition within a certain range. It is very convenient to carry out control and management.

Detailed Images

Attention to Order
1. Liquid name and property: solid contents (or water contents), viscosity, surface tension and PH value.
2. Dry powder density, residual water contents allowed, particle size, and maximum temperature allowed.
3. Output, daily shift time.
4. Energy that can be supplied: steam pressure, electricity properly, fuel of coal, oil and natural gas.
5. Control requirement: whether or not the inlet and outlet temperatures should be controlled.
6. Powder-collecting requirement: whether it's necessary to use cloth bag filter and the requirement of the environment of the exhausted gas.
7. Other special requirements.

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