Oil/water separators for compressed air condensate
Thursday, November 13th, 2008Part of any compressed air system is the removal of the condensate and the oil/water separator. To meet today’s environmental laws, the oil content in water being discharged is strictly regulated..
The common elements of all separators are a large container where the condensate rests at atmospheric pressure to allow the oil to rise to the surface where it can be skimmed off. The water is then drawn from the bottom of the container and flows through an activated carbon filter before being discharged. The oil content remaining in the water is in the 15 to 20 ppm range.
The size of the separator needed is based on the air flow capacity of the compressor, the type of compressor (piston or rotary), the type of oil used (mineral or synthetic), and the climate at the location. The local regulations regarding the level of oil permitted will also influence the size of separator and or if additional treatment is needed.
The lowly oil/water separator is the least costly item in the compressed air loop, but with today’s green mentality is taking on more significance.