What role does a deaerator play in feedwater systems?

The deaerator is an essential component in feedwater systems, particularly in steam generation processes. Its primary function is to remove dissolved gases from the feedwater, with a specific focus on eliminating oxygen and carbon dioxide. These gases are detrimental to boiler operations because they can lead to corrosion and other issues within the boiler system.

When water is prepped for use in a boiler, the presence of oxygen can contribute to rusting of metal components, while carbon dioxide can lead to the formation of carbonic acid, further promoting corrosive processes. The deaerator employs a combination of heat and reduced pressure to facilitate the removal of these gases. By providing heat, it helps to lower the solubility of gases in the water, making it easier for them to escape.

This process not only protects the integrity of the boiler and associated equipment but also ensures efficient and safe steam generation. In essence, the proper functioning of a deaerator is crucial in maintaining the longevity and reliability of a feedwater system, allowing it to operate effectively without the risks associated with dissolved gases.