Selection of Compressed Air Post-Treatment Equipment

Compressed air is an important power source widely used in various industrial sectors. Poor-quality compressed air will, 

in mild cases, cause rapid wear of pneumatic equipment, valve blockage and pipeline corrosion, leading to air leakage, equipment failure, 

product rejection or quality degradation, production shutdown and higher maintenance costs. In severe cases, it may pose threats to human health and safety. Therefore, 

it is vital to select a suitable set of post-treatment equipment. The following principles can be followed:

(7) The compressed air drying and purification process consists of drying and filtration accompanied by continuous temperature reduction. 

Temperature plays a critical role in purification; both inlet air temperature and ambient temperature directly affect drying and purification efficiency.

(8) Air receivers serve an important function in the entire compressed air system. They stabilize airflow, cool compressed air, discharge contaminants and store air. 

Hence, air receivers should be installed between the air compressor and drying/purification equipment, as well as between drying/purification equipment and end-use points.

(9) If the oil-water mixture discharged from air compressors, aftercoolers, air receivers, filters, refrigerated air dryers, 

desiccant air dryers and zero-air-loss electronic drain valves is to be discharged directly, an oil waste collector must be added to recover oil so as to meet environmental protection requirements.