Product Description
The custom spray drying functions on the principle of utilising an atomiser to disperse liquid material into minute droplets, which are then introduced into a stream of hot air. The hot airflow and the material come into contact with each other in countercurrent, parallel flow or mixed flow configurations. Through rapid heat and mass exchange, the moisture in the wet material is rapidly vaporised, thereby achieving the objective of drying.
The working principle includes the following steps:
Atomisation: The liquid material is atomised into fine droplets through an atomiser (e.g. two-fluid nozzle or centrifugal atomiser).
Drying: The atomised droplets are in contact with hot air in the drying chamber, where the water evaporates rapidly and solid particles are formed.
Collection: The dried solid particles are collected through a cyclone separator or filter.
Main structure
The custom spray drying is composed of the following parts:
1. Sprayer: This component is responsible for evenly dispersing the liquid substance in the drying hot air, typically featuring nozzles and compressed gas. Various spraying methods exist, such as compressed gas atomisation and centrifugal rotating spray, and a range of nozzle calibres are available, allowing customisation according to experimental requirements.
2. Hot air furnace: This provides the hot air flow required for drying, and is usually composed of a burner, furnace, and heat exchanger, among other parts. These can heat the hot medium or steam to a certain temperature and send it into the drier.
3. Collector: This is used to collect granular or powdery material after drying.The collector's design is key to improving the efficiency of material collection.
Product parameters
|
Item Model |
LPG-5 |
LPG-25 |
LPG-50 |
LPG-150 |
LPG-200~2000 |
|
Inlet temp. ºC |
140~350 |
140~350 |
140~350 |
140~350 |
140~350 |
|
Outlet temp. ºC |
80~90 |
80~90 |
80~90 |
80~90 |
80~90 |
|
Max. water evaporation kg/h |
5 |
25 |
50 |
150 |
200~2000 |
|
Transmission form of centrifugal atomizer |
Compressed air transmission |
Mechanical transmission |
Mechanical transmission |
Mechanical transmission |
Mechanical transmission |
|
Maximum speed (r.p.m) |
25000 |
18000 |
18000 |
15000 |
8000-15000 |
|
Diameter of atomizer (mm) |
50 |
120 |
120 |
150 |
180-240 |
|
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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advantages
Low temperature drying: some models can finish drying under low temperature of 110℃, suitable for heat-sensitive materials.
Automatic operation: equipped with colour touch screen, supporting full automatic and manual control.
High-efficiency atomisation: equipped with two-fluid nozzle or centrifugal atomiser, good atomisation effect and uniform particles.
High recovery rate: equipped with cyclone separator or electrostatic collector to improve product recovery rate.
Safe design: part of the equipment is equipped with explosion-proof function, suitable for drying organic solvents.
application
Custom spray drying is widely used in the following fields:
Pharmaceutical industry: used to prepare drug micropowder, improve the bioavailability and solubility of drugs.
Food industry: for the preparation of food additives, flavours and fragrances.
Chemical industry: for the preparation of pigments, dyes, resins, etc.
Biotechnology: used in the preparation of microbial strains, biological agents, etc.
Scientific research: used for laboratory research, preparation of complex micropowders or solid solutions.
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