large-sized spray dryer machine

Large-sized Spray Dryer Introduction
This machine belongs to the direct-continuous type, the hot-air drying equipment as well as the continuous-atmospheric dryer, suitable for drying heat-sensitive liquid, suspensions and viscous liquids such as milk, eggs, tannin and drugs, and also for drying fuel, intermediates, soap powder and inorganic salts. The material is atomized into droplets via three atomizers, injected directly into tower shell, and dried in process of acceleration and conveyance. To meet different customer needs, small-sized spray dryer from Azeus is also available.

Large-sized Spray Dryer Features
1. High heat-transfer efficiency; high drying speed; significantly increasing the superficial area of feed liquid after sprayed; good uniformity, mobility and solubility; high purity.
2. Short drying time (generally 5-30 s). 95% - 98% of moisture can evaporate in the hot air flow with only a few seconds, especially for the heat-sensitive materials. The final moisture of products can reach 0.1%.
3. Integrate spraying ,drying and granulating in one step. Equipped with powder returning device, the rate of granulating is more than 95% with 0.2-2mm size.
4. Operation temperature can be adjusted between 150℃-500℃. The particle size, bulk density, moisture content of product within a certain range can be also adjusted by changing the operating conditions, convenient to control and manage.
5. High degree of automation, simple production process, easy to operate.
6. Working in closed environment to effectively prevent the environmental pollution problems.

Large-sized Spray Dryer Working Principle
After filtered and heated, hot air enters into the dryer at the top of the air distributor, and spirals evenly into the drying chamber. Via high-speed centrifugal atomizer on top of the tower body, feed liquid is sprayed into very fine mist which can be dried as finished products in a very short period of time by the hot air. Then, the finished products continuously are discharged from the bottom of drying tower and cyclone separator while the waste gas is emptied by induced draft fan.

spray dryer

large-sized spay dryer machine


Large-sized Spray Dryer Application

   Application Fields 
     Corresponding Content
   
   Chemical Industry
battery raw material, the alkaline dye pigment, dyestuff intermediate,
compound fertilizer, catalyst, white carbon black, .pesticides, feed, chemical fertilizer, etc.
   
   Plastic Resin
AB, ABS emulsion, urine aldehyde resin, phenolic rubber,
urea formaldehyde resin, polyethylene, PVC, etc.
   
   Food Industry
rich fat milk powder, lancet protein, cocoa powder,
animal blood meal, egg white (yellow)whole egg powder, etc.
   
   Food and Plants
oats, chicken juice, coffee, instant tea, flavor spices meat,
protein, soybean, peanut protein, etc.
     Sugar
corn starch, corn starch, glucose, pectin, malt sugar,  etc.
    Ceramic
aluminum oxide, ceramic tile material, magnesium oxide, talcum powder, etc.
Pharmaceutical Industry
tablet, capsule granular, granular of Chinese medicine

















How to Choose a Right Spray Dryer

◆ Feed liquid name, physical properties: solid content(or moisture content), viscosity, surface tension and PH.
◆ Powder capacity after drying, allowable residual moisture content, the highest temperature permissible as well as granularity.
◆ Available energy: steam pressure availability, electric capacity, available amount of coal, oil and gas.
◆ Control requirements: whether the inlet and outlet temp needs automatic control.
◆ Powder collecting requirements: whether to install bag catcher; environmental requirements for discharging off-gas.


Large-sized Spray Dryer Classifications

◆ Centrifugal Spray Dryer Machine
◆ Pressure Spray Dryer Machine
◆Chinese-medicine Spray Dryer Machine
◆Air-stream Spray dryer machine

Large-sized Spray Dryer Technical Parameters

Model 
5
25
50
150
200-2000
Inlet temperature 
140-350 automatic regulated 
Outlet temperature 
80-90
Max water evaporation(kg/h)
5
25
50
150
200-2000
Rotary speed(r.p.m)
25000
18000
18000
15000
8000-15000
Diameter of spraying plates(mm)
50
120
120
150
180-240
Heater Source 
electric
Gas +electric
Gas +electric +LPG+coal+furnace
Max Power(kw)
9
36
72
99
 
Overall size (m)
1.8×0.93×2.2
3×2.7×4.26
3.5×3.5×4.8
5.5×4×7
OEM
Rate of product collection(%)
≥95


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