Vertical Tray Deaerator (Single Vertical Tank)

Corrosion is caused by the presence of non-condensable gases such as oxygen and carbon dioxide in water. In order to remove the non-condensable gases, the feedwater is heated and vigorously scrubbed by a counter current flow of steam. The incoming undeaerated water enters the deaerator though spring-loaded, stainless steel spray valves. These variable orifice valves produce a fine spray in a uniform pattern from 5% to 200% of design. The fine droplets of water maximize the surface area in contact with steam, raising the temperature to within a few degrees of saturation temperature and instantly releasing the majority of the corrosive, non-condensable gases.