LPG High Speed Centrifugal Spray Dryer

The solution, emulsion, suspension liquid or slurry are sprayed into fine beads in the hot air, going down from the top of the drying chamber to the bottom, the water will be evaporated to and the product becomes powder or granular product.

Induce hot air from the top of the drying tower, at the same time, pump the material liquid to the top of the tower by screw pump or peristaltic pump, the feeding solution becomes into fine beads or small droplets through the atomizer. When the droplets meet the high-temperature hot air, the water will be evaporated immediately, and the material liquid is dried into the dry product in a very short time, the product is discharged from the bottom of the drying tower, or from the cyclone (depend on the configuration). When the hot air contacts with the droplets, the temperature declines significantly, and the humidity increases greatly, and then will be exhausted by the exhaust fan. The fine powder in the air will be collected through different separating devices

There’re different fine powder separation and recovery devices, such as cyclone (the common type and various combination type), bag filter, cyclone + bag filter, cyclone + wet scrubber, and bag filter + wet scrubber, etc. We should different fine powder separation and recovery devices as per the characteristics of the product and requirements of the customer.

Depend on the product features and requirements, we might install a secondary drying and cooling system (such as ZLG vibration fluid bed or pneumatic transportation), formulation system or powder sieving system etc after the spray dryer, or dehumidifier.

Features

The designs of our spray dryer are advanced in China, as well as worldwide. If we compare the important parameters of our spray dryers and some famous brands in the world, such as final moisture content, color, flavor, particle size, solubility and bulk density etc, they are very close, or sometimes, ours are even a little better. A lot of customers have achieved their desired results with our equipment.

1. The drying speed is rapid. When the liquid raw material is atomized, the surface of the material will be enlarged greatly. 95% - 98% of water can be evaporated instantly in the hot airflow and the drying is only a few seconds. This dryer is especially suitable to dry the heat-sensitive material.

2. The uniformity, flow capability & solubility of the dryer are very good. The finished products have high quality and high-purity.

3.Simple and stable operation, convenient control and debugging, easy to achieve automatic operation.

4. The production process is simple, The dryer can dry the liquid material which contains 40%-60%(90% for special materials) of moisture into powder at once. There’s no need for smashing or sieving after drying so the operational environment is clean and in a healthful condition, it also can avoid powder flying in the air during the drying process.

Applications

- Food Industry: whole milk powder, cocoa milk powder, milk substitute, egg white (yolk), etc. armpit prion, Oats, chicken juice, instant tea, seasoning meat, protein, soybean, peanut protein, protein hydrolyzate, etc. Corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, pumpkin powder, etc.

- Pharmaceutical products: Chinese traditional medicine extract (herb extract), medicine colloid, yeast, vitamins, antibiotics, amylase, lipase, etc.

- Plastics resin: AB, ABS emulsion, urea-formaldehyde resin, phenolic resin, dense plastic (urea) formaldehyde resin, polyethylene, polyvinyl chloride, etc.

- Detergent: advanced washing powder, normal washing powder, soap powder, soda powder, emulsifiers, brighteners, phosphoric acid agents.

- Chemical Industry: Sodium fluoride (potassium), alkaline dyestuff and pigment, dye intermediates, Mn3O4, formic silica acid, catalyst, sulfuric acid agent, amino acids, silica, etc..

- Sugar: Corn Syrup, Corn Starch, Glucose, Pectin, Maltose, Potassium Sorbate, and etc.

- Ceramic: aluminum oxide, ceramic tile material, magnesium oxide, talc, etc.

PRODUCTION FLOWCHART

WATER EVAPORATION CURVE

TECHNICAL PARAMETERS

Notes: The evaporated amount of water is related to the characteristics of raw materials and the temperature of inlet air and outlet air. When the temperature of the outlet air is 90°C, the water evaporated curve is listed in the above table (for reference only). If the product has been improved or updated by new technology, the related parameters will be changed accordingly!

Attention to order

◎Liquid name and property: Solid contents(or water contents), viscosity, surface tension, and PH value.

◎Dry powder density residual water contents allowed, particle size, and maximun temperature allowed.

◎Output: shift time daily.

◎The energy that can be supplied: steam pressure, electricity properly, the fuel of coal, oil and natural gas.

◎Control requirement: whether or not the inlet and outlet temperatures should be controlled.

◎Powder collection requirement: whether it’s necessary to use cloth bag lter and the requirement of the environment of the exhausted gas.

◎Other special requirements.

Technical Parameter

Note: These parameters for reference only and will be changed as per URS.

Flow Chart