Design Of Deaerators For Feedwater

Design Of Deaerators For Feedwater

A deaerator is a device that is used in power plants and other industrial settings to remove dissolved gases, such as oxygen and carbon dioxide, from feedwater before it is supplied to boilers. This is important because dissolved gases in feedwater can cause corrosion and other problems that can reduce the lifespan of equipment and increase maintenance costs. Deaerator designs can vary depending on the specific needs of a given application, but they generally involve a tank with a steam-heated tray or sprayer that scrubs the water of dissolved gases. To design an effective deaerator for feedwater, several criteria should be considered. Firstly, the design should provide enough residence time and steam contact to ensure that dissolved gases are thoroughly removed from the water. Secondly, the design should account for the temperature and pressure of the feedwater, as these factors can affect the solubility of dissolved gases in the water. Additionally, the tank and equipment used in the design should be made of materials that are resistant to corrosion and erosion caused by water and steam. The inlet and outlet pipes should also be designed to allow for smooth and efficient flow of water and steam, without causing unnecessary turbulence or pressure drops. Finally, the design should include appropriate safety features, such as relief valves, to ensure that the system can safely handle any unexpected surges in pressure or temperature. In summary, a well-designed deaerator for feedwater should provide sufficient residence time and steam contact, account for temperature and pressure, use corrosion-resistant materials, incorporate efficient piping design, and include appropriate safety features.

Deaerator, Feedwater, Residence Time, Solubility, Corrosion Resistance, Piping Design, Safety Features

— Christopher Jones