There are many types of mechanical equipment used for drying. According to the operating pressure, it can be divided into atmospheric pressure and vacuum (vacuum dryer also known as vacuum dryer).
According to the operating pressure, the dryer is divided into two types of atmospheric pressure dryer and vacuum dryer. Under vacuum, it can reduce the moisture partial pressure of space and accelerate the drying process, and can reduce the wet boiling point and material drying temperature, steam is not easy
According to the movement (material movement and drying medium flow) can be divided into parallel, countercurrent and cross flow.
According to the drying medium can be divided into air, flue gas or other drying medium.
According to the operation method can be divided into intermittent and continuous.
So that the vacuum dryer is suitable for drying heat sensitive, easy oxidation, explosive and toxic materials and wet steam needs to be recycled occasions.
