Advanced Spray Drying Machine for Uniform and Pure Heat-Sensitive
Products
PRODUCT DESCRIPTION:
Spray drying is a widely used process in the liquid process forming
and drying industry. It is suitable for producing powdery and
granular solid products from solutions, emulsions, suspensions and
paste liquid raw materials. Therefore, spray drying is a better
process when the particle size distribution, residual moisture
content, bulk density and particle shape of the finished product
must meet certain standards.
working principle:
The air is filtered and heated and enters the air distributor at
the top of the dryer. The hot air enters the drying chamber in a
spiral shape evenly. The liquid material passes through the
high-speed centrifugal atomizer at the top of the tower and is
(rotated) sprayed into extremely fine mist-like droplets, which can
be dried into finished products in a very short time when contacted
with hot air in parallel flow. The finished product is continuously
output from the bottom of the drying tower and the cyclone
separator, and the waste gas is exhausted by the fan.
Performance characteristics:
The drying speed is fast. The surface area of the liquid material
is greatly increased after atomization. In the hot air flow,
95%-98% of the water can be evaporated in an instant. It only takes
a few seconds to complete the drying. It is especially suitable for
drying heat-sensitive materials.
◎The product has good uniformity, fluidity and solubility, and the
product has high purity and good quality.
◎The production process is simplified and the operation and control
are convenient. Liquids with a moisture content of 40-60% (up to
90% for special materials) can be dried into powder products at one
time. There is no need to crush and screen after drying, which
reduces the production process and improves product purity. The
product particle size, bulk density, and moisture content can be
adjusted within a certain range by changing operating conditions,
and control and management are very convenient.
Adapt to materials:
Chemical industry: sodium fluoride (potassium), basic dyes and
pigments, dye intermediates, compound fertilizers, formaldehyde
silicic acid, catalysts, sulfuric acid agents, amino acids, white
carbon black, etc.
Plastic resin: AB, ABS emulsion, urea-formaldehyde resin, phenolic
resin, sealant (urea) formaldehyde resin, polyethylene, polyvinyl
chloride, etc.
Food industry: fat-rich milk powder, protein, cocoa milk powder,
milk replacer powder, blood hunting powder, egg white (yellow),
etc.
Food and plants: oats, chicken juice, coffee, instant tea, spiced
meat, protein, soybeans, peanut protein, hydrolysates, etc.
Sugars: corn steep liquor, corn starch, glucose, pectin, maltose,
potassium sorbate, etc.
Ceramics: alumina, ceramic tile materials, magnesium oxide, talcum
powder, etc.
Technical specification:
| Model/Item/Parameter | 5 | 25 | 50 | 150 | 200-2000 |
| inlet temperature | 140-350 self-control |
| output temperature | 80-90 |
| water evaporation(kg/h) | 5 | 25 | 50 | 150 | 200-2000 |
Centrifugal spray head transmission form | Compressed air transmission | Mechanical transmission |
| Rotating speed(r.p.m) | 25000 | 18000 | 18000 | 15000 | 8000-15000 |
| Spray disc diameter(mm) | 50 | 120 | 120 | 150 | 180-240 |
| heat source | electricity | Steam + electricity | Steam + electricity, oil, gas, hot air stove |
| Electric heating power(kw) | 9 | 36 | 72 | 99 | |
Overall dimensions (Length×width×height)(m) | 1.8×0.93×2.2 | 3×2.7×4.26 | 3.5×3.5×4.8 | 5.5×4×7 | Determine according to actual situation |
| Dry powder recycling(%) | ≥95 |
Note: The amount of water evaporation is related to the
characteristics of the material and the hot air inlet and outlet
temperatures. When the outlet temperature is 90℃, the water
evaporation curve is shown in the figure above (for model selection
reference). As the product is constantly updated, the relevant
parameters will change without prior notice.
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◎Name and physical properties of the material liquid: solid content
(or water content), viscosity, surface tension, and PH value.
◎Powder capacity after drying, allowable residual moisture content,
particle size, and allowable maximum temperature.
◎Output and daily opening hours.
◎Available energy: available steam pressure, electrical capacity,
available coal, oil, and gas.
◎Control requirements: Whether the inlet and outlet temperatures
need to be controlled automatically.
◎Powder collection requirements: Whether to install a bag trap and
environmental requirements for exhaust gas emissions.
◎Other special requirements.
High speed centrifugal spray dryer pictures:
