Generally,it's not clear for the person who just contacts rotary dryer. In the processing of rotary dryer,what's the difference between countercurrent and faircurrent flow process.For example, faircurrent flow drying is more suitable for not high demand for final water content of the material, while,countercurrent drying is suitable for higher demand for water content.Here we detailed introduce you how to choose and buy so that it's convenient to you.The media of direct heat transfer rotary dryer is block, according to black flow direction,it can be divided into faircurrent drying and countercurrent drying.
First of all, to distinguish from the flow direction. Everyone can get a very good understanding literally: downstream drying is the combustion chamber and wet material feeding is in the same end, heat flow direction and the material's movement direction is consistent.Both transfer from the material incoming end to the discharge end.In the process of flow, wet material is dried with the hot air; Countercurrent drying refers to the wet material feeding and the are at the different end of rotary dryer. Combustion chamber is in the discharging end.In the process, material and hot air is to do the reverse movement, wet materials be dried in athletic process,because of the heat.
Then, to distinguish from the final water requirements of materials. In early,downstream drying impetus is bigger.The temperature of the media decreases with the material temperature increasing.So,flow drying is more suitable for not high demand for final water content of the material. In the countercurrent drying process,as the combustion chamber is at the discharging end, the impetus of rotary dryer is evener, so is more suitable for higher demand for water content of the material. If you want to know more about rotary dryer,just go to ZONEDING Machine,which mainly supplys rotary dryer,sand dryer, coal slime dryer etc. Welcome you consult.
The difference between rotary dryer countercurrent and faircurrent flow process
