1working principle:
Spray drying is the most widely used process in liquid forming and drying industries. It is most suitable for generating powder, granular or massive solid products from solutions, lotion, suspensions and plastic paste liquid raw materials. Therefore, when the particle size distribution, residual moisture content, bulk density, and particle shape of the finished product must meet precise standards. Spray drying is a very ideal process. After filtering and heating, the air enters the top air distributor of the dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer at the top of the tower body, and (rotating) spray into extremely fine mist like liquid beads. It contacts the hot air with a large surface area, and the moisture evaporates rapidly. It is dried into granular products in a very short time. The wet waste gas collected at the bottom of the tower and in the cyclone separator is discharged to the outside by the fan.
IIProduct features:
The drying speed is fast, and the specific surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95% -98% of the water can be evaporated instantly, and the drying time can be completed in only ten to tens of seconds. It is particularly suitable for drying heat sensitive materials.
The obtained product is spherical particles with uniform particle size, good flowability, good solubility, high purity, and good quality.
Widely applicable, according to the characteristics of the material, it can be dried with hot air or granulated with cold air, with strong adaptability to the material.
Simple and stable operation, convenient control, and easy implementation of automated tasks.
3、 MainlyTechnical parameters:
name |
LPG |
|||||
5 |
25 |
50 |
100 |
150 |
200-2000 |
|
Inlet temperature |
140-350 self-control |
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outlet temperature |
80-90 |
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Maximum evaporation rate of water (Kg/h) |
5 |
25 |
50 |
100 |
150 |
200-2000 |
Drive type of centrifugal spray head |
Compressed air rotation |
mechanical drive |
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Rotational speed (r.p.m.) |
25000 |
18000 |
18000 |
18000 |
15000 |
8000-15000 |
Spray disc diameter (mm) |
50 |
120 |
120 |
120 |
150 |
180-340 |
heat source |
electric |
electric |
Electricity+steam |
Electricity+Steam |
Electricity+steam |
By user |
Maximum power of electric heating (Kw) |
8 |
31.5 |
60 |
81 |
99 |
|
Dimensions: Length x Width x Height (m) |
1.8×0.93×2.2 |
3×2.7×4.26 |
3.7×3.2×5.1 |
4.6×4.2×7 |
5.5×4.5×6 |
According to specific circumstances |
Dry powder recovery rate% |
≥95 |
≥95 |
≥95 |
≥95 |
≥95 |
≥95 |
Note: The evaporation rate of water is related to the characteristics of the material and the temperature of the hot inlet and outlet. |