The common types of dryer in China are spray dryer, air flow dryer, fluidized bed dryer, fluidized bed spray granulation dryer and so on.  
The first one: spray dryer
Spray drying is the essentials of atomizing drying equipment hope the fastest configuration practice has 3 kinds: rotary atomization, pressure atomization and atomization.  
Rotary atomization characteristics of spray drying is a stand-alone production capacity (the amount of spray up to 200t / h), feed quantity is easy to control, high operating flexibility, application comparison generally. Pressure atomizer spray drying is characterized by coarse particles can manufacture, convenient repair. Air tight chamber and intermediate for the implementation of the atomizer factory, its power consume large. The former two kinds of liquid atomizer can atomization, atomization can accept pneumatic atomizer.       
Second: air dryer
Air drying technology is mature, if the operation data, direct plan. Contemporary, there are a lot of dry configuration factory can provide such a sample configuration.     
Third: fluidized bed dryer
Fluidized bed dryer after spray dryer. A fluidized bed drier with internal heat transfer and a fluidized bed dryer with internal heat transfer. When with fluidized bed drying easy to unity or agglomeration of powder particle materials, in feeding water relatively large segment will generate difficulty in fluidizing signs. At this time in the feeding section set mixer, eliminate the problem of unity, can reach the normal flow. The latter is a combination of conduction and convection heat transfer, when used for normal flow state of thermal environment far cannot satisfy the drying required heat, acceptance within the set for heat exchanger, providing departments or heat, the essentials of the operation can significantly energy saving. Inside heat exchanger has many kinds of forms. The fluidized bed is often used in combination with second stages and third stages of drying. The vibration is applied in the ordinary fluidized bed, and the vibrating fluidized bed is called. Vibration fluidization resulting from gestation source can be divided into two classes: Class 1 for vibration motor drive; on the other class 1 for ordinary motor resolved excitation box spring generates vibration. When the vibration fluidized bed size is large, the latter is better.      
Fourth: fluidized bed spray granulation dryer
This process is the organic combination of the 3 organic combination of fluidization skill, atomization skill and dry skill. It is to spray the material liquid sprayed into the fluidized bed, so that the seed can grow up and dry, to be brought up to the designated size when the exclusion. The configuration size is small, the production capacity is large, can produce large particles. The industrial application of the configuration has been growing.