Atmospheric air contains water in vapor form in different volumes according to the ambient conditions. Under compression, this water is drawn in along with the air. After compression, the air and water are then discharged to the distribution system, with some of the water content normally being removed by a compressed air aftercooler and then discharged. However, a large proportion of the water vapor content remains in the compressed air, moving in the pipe distribution system as the air is consumed. Water Contamination Risks
Corrosion in the network:
Increasing pressure drop due to deterioration of the air network with increasing pipe scale and rust. Damage to joints will cause air leaks, significantly increasing the cost of plant production.
Malfunction of the pneumatic equipment: Excess water will lead to malfunctioning of equipment and instrumentation, a reduction of component life and an increase in production losses and manufacturing costs.
Product contamination: The efficiency of the production process can reduce product spoilage caused by product contamination; fitting moisture separators improves air quality. During painting, condensate causes imperfections on the finished product creating future corrosion areas. In pharmaceutical and electronic applications, condensate product contamination can be harmful and/or extremely expensive. Compressed air may undergo further cooling in the piping, as a result of ambient temperature and/or due to expansion, resulting in liquid water lying in the pipe distribution system, receivers and pneumatic equipment. As time passes, the condensate can cause serious damage to pipes and applications, resulting in production downtime and higher maintenance costs. During processes, where compressed air comes into contact with the final product, it can even damage the product itself.