Degasifying systems (Deaerators)

Deaerators ( Degassing system) are mechanical equipment which eliminate dissolved gases from boiler feed water. This process protects the steam system from the effects of corrosive gases. It accomplishes this by decreasing the concentration of dissolved oxygen and carbon dioxide to a level where corrosion is minimized.
Dissolved carbon dioxide is essentially completely removed by deaerator. In most high pressure (>200 psig) boilers a dissolved oxygen level of 5 parts per billion (ppb) or lower is required to prevent corrosion. Whereas oxygen concentrations of up to 43 ppb may be tolerated in low pressure boilers, equipment life is prolonged by limiting the oxygen concentration to 5 ppb.

Advantages
  • Cost reduction because of reduces chemical use
  • Easy installation
  • Long service life
  • Reduced oxygen concentration
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