Adsorption drying involves moving compressed air through an adsorbent, thirsty for water, that becomes saturated and that is regenerated regularly. Regeneration involves sweeping expanded dry gas (heat-free dryer – pressure swing adsorption (PSA)), or warm air(external regenerative dryer – temperature swing adsorption (TSA)) as a countercurrent.s of compressed air in the cooling stage, greatly improve the customer's economic benefits.
1.Low pressure dew point.
2.Stainless steel air pipe.
3.Low vibration and low noise.
5.Good in quality control.
Compressed air containing moisture enters through the air, during the flow through the adsorption bed, water vapor is adsorbed by hygroscopic adsorbents, the dried compressed air enters the compressed air pipe network.
There are still some areas and applications where Adsorption air dryers can be used, such as power construction, packing food, making ship, cleaning medical molding,removing EDM recast and discoloration, finishing and texturing injection mold cavities, cleaning orifices in turbine blades,engraving optical lenses,cleaning and preparation of semi-precious stones and jewelry, etc.
Difference Between An Adsorption Air Dryer and A Refrigerated Air Dryer
1 different working principle
The refrigerating air dryer is based on the principle of freezing and dehumidification, and the saturated compressed air from the upstream is cooled to a certain dew point temperature by heat exchange with the refrigerant, and a large amount of liquid water is condensed, and is automatically discharged out of the machine after being separated by the gas-liquid separator.The adsorption air dryer is based on the principle of pressure swing adsorption, and the saturated compressed air from the upstream is contacted with the desiccant under a certain pressure, and most of the water is adsorbed in the desiccant, and the dry air enters the downstream.
2 different water removal effects
Because of the principle of the refrigerating air dryer, if the temperature is too low, there will be ice formation, so the dew point temperature is usually 2~10 °C. The adsorption air dryer does not have to pass the temperature change, and the desiccant (alumina) can be further dried. Therefore, the dew point of the outlet can usually reach below -20 ° C, which means deep drying can be achieved.
3 difference in energy loss
For the refrigerating air dryer, since the cooling is performed by the refrigerant compression, the power supply power is high. The adsorption air dryer has only a few tens of watts of electric power because it only needs to control the valve through the electric control box, which means that there is no power loss.
4 difference in gas loss
Because the refrigerating air dryer achieves the purpose of removing water by changing the temperature, the water is discharged out of the machine through the automatic drainer, so there is no loss of gas volume. The adsorption air dryer needs regeneration of about 12-15% because the desiccant needs to be regenerated after the water absorption is saturated.
5 different failure rates
Because the refrigerant system and the air system of the refrigerating air dryer include relatively complicated electrical parts, and the adsorption air dryer has only the valve having a malfunction due to frequent movements, the failure rate of the adsorption air dryer under normal conditions is normal. It is lower than the refrigerated air dryer.