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 small granular product.
Induce hot air from the top of drying tower, at the same time, pump the material liquid to the top of the tower by high pressure pump, the feeding solution becomes fine beads or small droplets through the pressure nozzle(s). When the droplets meet the high temperature hot air, the water will be evaporated immediately, and the material liquid is dried into 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 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 product and requirements of customer.
Depend on the product features and requirements, we might install 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.
The particle size of the product from pressure spray dryer is normally within the range of 120mesh to 20 mesh. If bigger particles are required, we suggest FL Fluidized Granulator or re-combined agglomerator.
Food Industry: whole milk powder, skimmed 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 thydrolyzate. Corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, pumpkin powder, instant coffee, and non-dairy creamer etc.
Pharmaceutical products: Chinese traditional medicine extract (herb extract), medicine colloid, yeast, vitamins, antibiotics, amylase, lipase, etc.
Ceramic: aluminum oxide, ceramic tile material, magnesium oxide, talc, etc.
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 brand 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.
Air Inlet temperature
140-550 °C (depend on the product to be dried, and URS)
Air exhaust temperature
60-120 °C (depend on the product to be dried, and URS)
Nominal water evaporation capacity (Kg / h)
High-pressure steam, or steam + electricity, or any kinds of fuel (diesel, natural gas, liquefied petroleum gas or coal, etc.), or solid fuel (any combustible material). Please specify.
Drying tower diameter (mm)
Overall Dimensions (m)
95-99.9%,depend on the properties of the product and configurations
Notes for Inquiry: 1. Liquid material name and physical properties: solid contents (or moisture contents), viscosity, surface tension, PH value, etc. If there’s any other liquid, such as organic solvent, please specify the name and percentage clearly. 2. Product characteristics: final moisture content required, the range of particle size, and heat sensitive temperature etc. 3. Special requirements (if any): range of specific bulk density, color, and flavor etc. 4. Working capacity (kg/h or ton/h). If the capacity is based on per day, per month or per, please also indicate the working hours.
5. Heat source: it could be the pressure of steam, electricity, coal, oil, natural gas, LPG and other combustible materials. 6. Control requirements: the way to control the air inlet temperature, liquid supply system, pneumatic hammer etc, and the type of the system control (normal push button type, PLC+HMI, and PC system etc)
7. Fines collection type: depending on the product characters and environment protection requirements, we have following options, cyclone, bag filter, wet scrubber and their combinations.
8. Other special requirements: dimensions of the workshop, height limit and special electricity requirements etc.
Note:Customers might provide part of the above mentioned aspects. Other requirements, we should decide after making trials, or after technical discussion with the customer, or as per our experience
Changzhou Jinqiao Spray Drying and Engineering Co., Ltd