LPG Series Centrifugal Spray Dryer

• Customization: Available
• After-sales Service: Permanent Technical Support
• Warranty: 1 Year Warranty for Equipment Spare Parts
• Model NO.: LPG
• Material Status: Solution
• Atomization: Gas Atomization
• Flow: Parallel Flow
• Heat Source: Natural Gas
• Type: Centrifugal Spray
• Bearing: S-K-F, NSK as Optional
• Material: Ss 304L or Ss 316L
• Certification: GMP/CE/ISO
• Transport Package: Wooden Case
• Specification: Based on model
• Trademark: SHENZHOU
• Origin: China
• HS Code: 8421192000
• Production Capacity: 500sets/Year
• Package Size: 1800.00cm * 1200.00cm * 1700.00cm
• Package Gross Weight: 1000.000kg

Product Description

Applications of Spray Dryer:
 
1. Drying liquid or slurry materials into dry powder 
2. Atomizing type: centrifugal atomizer 
3. Evaporation capacity: 3-1000 kg/h 
4. Heat source: steam, electricity, oil/gas/coal fired hot air generator 

 

Working principle of spray dryer :
 
Working principle: Spray drying is a method of producing a dry powder from a liquid or slurry 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 and filtered hot air will be blown into the air distributor at the same time. The evenly and swirly distributed hot air completely contacts with the droplets for heat transfer. In several seconds, the droplets will be dried into powder and sucked out into the cyclone for discharging via exhaust fan.

 

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

item\parameter\spec	LPG
	5	25	50	100	150	200-2000
inlet temperature °C	140-350 automatically controlled
outlet temerature °C	~80-90
Max.water evaporation capacity	5	25	50	100	150	200-2000
centrifugal spraying nozzle transmission mode	compressed air transmission	Mechanical transmission
Rotation speed rpm	25000	18000	18000	18000	15000	8000-15000
sprayingdesc diameter mm	50	100	120	140	150	180-340
Heat supply	Electricity	Electricity+steam	Electricity+steam,fuel oil and gas			Settled by users themselves
Max.Electric heating power kw	9	36	63	81	99
overall dimensions m	1.8×0.93  ×2.2	3×2.7  ×4.26	3.7×3.2  ×5.1	4.6×4.2  ×6	5.5×4.5  ×7	Depends on the concrete conditions
Dried powder restoring tate %	≥95	≥95	≥95	≥95	≥95	≥95
Note:For the water evaporation capacity, material property,the inlet and outlet tempratures,please refer the following diagram for reference.

Features

1.Fine droplets are dried in the drying camber by supplying hot air through the inlet.
2.The surface of the liquid drop is dried immediately to form a tough shell.
3.Further the liquid inside must escape by diffusing through the shell at a particular rate.
4.At the same time heat transfer from outside to inside takes place at a rate greater than liquid diffusion rate.
5.As a result heat inside mounts up which allows the liquid to evaporates at faster rate.
6.This tendency of a liquid leadsto rise in the internal pressure which causes the droplets to swell.
7.The shells thickness decreases where as permeability for vapour increases.
8.If the shell is neither elastic nor permeable it ruputur and the internal pressure escapes.
9.The temperature of the air is adjusted in such a way that the droplets should be compeletly dried before reaching the walls of the drying chamber.
10.The products should not be over heated at the same time.
Technical advantages of spray dryer :
 
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.

attention to order 
Liquid name and propertysolid contents(or water contents),viscosity,surface tension and PH value. 
Dry powder density residual water contents allowed,particle size,and maximum temperature allowed. 
Output:shift time daily. 
Energy that can be suppliedsteam pressure ,electricity properly,fuel of coal,oil and natural gas. 
Control requirement:whether or not the inlet and outlet temperatures should be controlled. 


 

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	3050	2250

Application

1.Spray dryer can be used for drying of ny substances both in solution or in suspension.
2.Spray dryer are very useful for the drying of thermolabile substances.
3.Citric acid, borax, sodium phosphate, hexamine, gelatine and extracts are dried by a spray dryer.
4.The suspensions of starch, barium sulphate and calcium phosphate are also dried by the spray dryer.
5.Milk, soap and detergents too are dried by a spray dryer.