Tom Liu

The two most popular dryers for air compressors are refrigeration dryers and adsorption dryers. Dryers are essential post-processing equipment. Despite the fact that both are used to handle compressed air, their prices and drying capabilities are considerably different. How can we choose an appropriate dryer when there are so many different designs available?

1. The drying process

In contrast, the refrigeration dryer uses less energy and costs less to operate, but it is unable to produce deeply dry compressed air like the adsorption drier. The freeze dryer's pressure dew point is typically higher than 3"Ctd. Selecting a freeze dryer is sufficient for most production operations; for some compressed air processes requiring higher needs and drier, 

You ought to pick an adsorption drying device.

2. The setting for installation

The climate is not suitable to the functioning of the equipment when the temperature is too high or too low for the refrigerator dryer, which has poor environmental adaptability. The adsorption dryer has a reasonably good adaptability to the ambient temperature, but when choosing the equipment, it is important to consider the influences of the high dew point value of the compressed air pressure brought on by the high outlet temperature of the air compressor at the highest ambient temperature.

3. Cost of purchase

The cost of an adsorption dryer with the same treatment capacity will be more expensive than that of a refrigerated dryer, based on the market's current sales pricing for products of the same brand.

4. Upkeep expenses

Dryers that are refrigerated use sealed refrigeration systems, which have reduced maintenance costs because the refrigerant is not exposed to the environment. Adsorption dryers frequently switch the valves between adsorption towers, and dryers with heat regeneration also switch between high and low temperatures. As a result, valve maintenance is relatively expensive. Additionally, the front end of the majority of adsorption dryers is fitted with oil-lubricated compressors. Because the adsorbent must be replaced frequently due to "oil poisoning" from the compressor lubricating oil, maintenance expenses are higher.

To sum up, if the temperature in the pipeline layout area is lower than 2°C for a long time, and the required value of compressed air pressure dew point is 5°C lower than the extremely low temperature value of the year, it is recommended to configure a suction dryer. It is recommended to install a cold dryer before the drying machine. The cold dryer can remove most of the water and oil in the compressed air, which can reduce the water removal load of the drying machine, ensure its drying effect, and reduce the selection of the drying machine. type, and at the same time reduce the pollution of oil impurities to the adsorbent, so that the drying effect can be maintained for a longer time, and the replacement time of the adsorbent can be extended.

In conclusion, it is advised to configure a suction drier if the temperature in the pipeline layout region is below 2°C for an extended period of time and the needed value of compressed air pressure dew point is 5°C below the extremely low temperature value of the year. Installing a cold dryer before the drying equipment is advised. In order to ensure that the drying effect of the drying machine is maintained for a longer period of time, the cold dryer can remove the majority of the water and oil from compressed air. This reduces the water removal load of the drying machine, ensures its drying effect, and reduces the selection of the drying machine type.