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LPG 5 Small Centrifugal Atomizer Spray Dryer

Spray drying is a method of producing dry powder from liquid or slurry materials by rapidly drying with a hot gas. This is the preferred method of drying of many thermally-sensitive materials such as foods and pharmaceuticals.
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Product Description

Overview


1. Drying liquid or slurry materials into dry powder 2. Atomizing type: centrifugal atomizer 3. Evaporation capacity: 3-8 kg/h 4. Heat source: steam or electricity


Working Principle


Spray drying is a method of producing dry powder from liquid or slurry materials by rapidly drying with a hot gas. This is the preferred method of drying of many thermally-sensitive materials such as foods and pharmaceuticals.

Liquid material is pumped into the top installed rotary disc atomizer by mono pump and atomized into fine droplets inside the drying chamber. Heated clean hot air is blown into the air distributor at the same time. The evenly and swirly distributed hot air completely contacts with the droplets for heat transfer. The droplets are dried into powder in several seconds and sucked out into the cyclone for discharging via exhaust fan.

LPG series spray dryer has been widely used in pharmaceutical, chemical and foodstuff industry for drying liquid material into fine powder.

LPG-3
LPG-5

Main Features


1)  Particle size control: The dry particle size can be easily controlled by atomization of the liquid feed and the design of the hot gas inlet. This spray dryer can typically produce between 30 to 500 micron average particle size, in a bell shaped distribution.


2)  The evaporative cooling of product: The heat and mass transfer during drying occurs in the air and vapor films surrounding the droplet. This protective envelope of vapor keeps the particle at the saturation temperature. As long as the particle does not become "bone-dry", evaporation is still taking place and the temperature of the solids will not approach the dryer outlet temperature.


3) Short residence time: The surface area produced by atomization of the liquid feed enables a short gas residence time, ranging from 3-10 seconds depending upon the application, which permits spray drying without thermal degradation.


4) Flow properties of dry product: The shape of most spray dried particles is spherical, which provides for fluid-like flow properties.  This makes many downstream operations, such as packaging, pressing, filtering, and handling easier and less costly.


5) Size design of drying chamber: The size of drying chamber is specially designed to prevent droplets sticking to the inner wall, dried powder accumulating on the cone part and guarantee enough residence time.


Main Technical Parameters 
Model
LPG-3
LPG-5
Drying chamber diameter  mm
1000
1200
Atomizer type 
Centrifugal disc atomizer/0.4KW
Centrifugal disc atomizer/0.4KW
Evaporation capacity   kg/h 
3-5
5-8
Inlet hot air temperature   â„ƒ
60-300 (PLC control)
60-300 (PLC control)
Outlet hot air temperature  ℃
80-90
80-90
Electrical heater  KW
12
18
Exhaust fan
Fan model
9-19-4A/2.2KW
9-19-4A/3KW
Rotation speed  RPM
2900
2900
Air pressure  Pa
3584-3597
3507-3253
Air flow rate   M3/h 
824-1264
1410-1704
Noise  db
<75
<75
Product collection 
Two-stage cyclone 
or cyclone+bag filter
Two-stage cyclone 
or cyclone+bag filter
Product collection rate   % 
≥98%
≥98%
Dimension  mm 
1800x1200x2200
2000x1800x2200 
Weight   kg 
400
600 
Power supply type 
240/380/416V, 50/60Hz, 3P
240/380/416V, 50/60Hz, 3P
Detailed Images
Atomizer
Air distributor
Draft fan
Drying chamber inside
Two-stage cyclone
Cyclone+bag filter
Packing & Delivery
FAQ

Q: What information should be provided in order to get a proposal or quotation?

A: Our spray dryer can be customerized. Before we can work out a detailed quotation, we have to know the following information:


1) What liquid material are you going to dry? Moisture type and viscosity ?

2) Moisture content before drying? Target moisture content of dried powder?

3) Required powder size distribution ?

4) Your recommended drying temperature?

5) Heat souce? Steam or electricity

6) Construction material ? SS304/SS316L


Q: How the dryer will be delivered ?

 A: The dryer is packed in plywood box for shipping


Q: Do you provide free drying test?

A: Yes. We have pilot plant for free drying test.

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