Anyang Gaokang Medical Co., Ltd. is one of the most reliable manufacturers and suppliers of milk spray dryer in China. With a professional production team, we are able to meet the needs of the majority of our customers. Please rest assured to buy premium milk spray dryer at competitive price from our factory.
Products Description
The milk spray dryer operates on the principle of flash evaporation coupled with centrifugal or pressure-assisted atomization. The process begins as pretreated liquid milk is delivered into the feed system. Within the drying chamber, the liquid is dispersed by a precision atomizer-typically a high-speed centrifugal wheel or a pressure nozzle-generating a uniform mist of micron-scale droplets.
This fine atomization, producing droplets typically ranging from 10 to 150 microns, creates a vast surface area for heat and mass transfer. Simultaneously, heated air (or inert gas) is introduced into the chamber in a controlled, co-current or counter-current flow pattern. Upon contact with the hot air, the surface moisture of each droplet evaporates almost instantaneously.
Due to the high surface-to-volume ratio, internal moisture migrates rapidly to the droplet surface, sustaining a constant drying rate. As evaporation proceeds, the solids within each droplet concentrate and solidify, forming discrete, free-flowing powder particles. The entire process-from liquid to powder-takes place within seconds, preserving heat-sensitive components through rapid moisture removal
Products details
working principle
The milk spray dryer working principle are follows：
- Feed System: Introduces liquid milk into the spray dryer. The milk is often pre-concentrated to reduce the water content before drying.
- Atomizer: Converts the liquid milk into fine droplets. Common types of atomizers include rotary atomizers (spinning disk) and nozzle atomizers (pressure nozzle or two-fluid nozzle).
- Drying Chamber: A large, insulated chamber where the fine droplets of milk are exposed to hot air. The hot air evaporates the moisture from the milk droplets, transforming them into fine particles of powder.
- Heat Source: Provides the hot air necessary for drying. This can be achieved through various heating methods, such as gas burners, electric heaters, or steam heaters.
- Air Flow System: Controls the flow and temperature of the hot air in the drying chamber. Ensures even drying and efficient moisture removal.
- Cyclone Separator: Separates the dried milk powder from the air. The powder is collected for further processing, while the air is filtered and released.
- Powder Collection System: Collects the dried milk powder, which is then packaged and stored. This system can include hoppers, conveyors, and packaging equipment.
- Control System: Monitors and adjusts various parameters such as temperature, air flow, and feed rate to ensure optimal drying conditions and product quality.
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Item Model |
LPG-5 |
LPG-25 |
LPG-50 |
LPG-150 |
|
Inlet temp. ºC |
140~350 |
140~350 |
140~350 |
140~350 |
|
Outlet temp. ºC |
80~90 |
80~90 |
80~90 |
80~90 |
|
Max. water evaporation kg/h |
5 |
25 |
50 |
150 |
|
Transmission form of centrifugal atomizer |
Compressed air transmission |
Mechanical transmission |
Mechanical transmission |
Mechanical transmission |
|
Maximum speed (r.p.m) |
25000 |
18000 |
18000 |
15000 |
|
Diameter of atomizer (mm) |
50 |
120 |
120 |
150 |
|
Heat source |
Electricity |
Electricity, steam, natural gas, LPG |
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|
Max. power of electric heater (kw) |
9 |
36 |
72 |
99 |
|
Overall dimensions (LWH) (m) |
1.8*0.93*2.2 |
3*2.7*4.26 |
3.5*3.5*4.8 |
5.5*4*7 |
|
Dry powder recovery rate (%) |
≥95% |
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Note: The amount of water evaporation is related to the characteristics of the material and the temperature of the hot inlet and outlet. |
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