De-aerators For Feedwater

De-aerators For Feedwater

De-aerators for feedwater are devices used in steam power plants to remove dissolved gases, such as oxygen and carbon dioxide, from the feedwater before it enters the boiler. These dissolved gases can cause corrosion and other damage to the boiler and other components of the power plant, reducing their efficiency and lifespan. De-aerators work by heating the feedwater and then mechanically removing the gases through a process called deaeration. The de-aerator typically consists of a large tank where the feedwater is heated and deaerated. The tank is usually divided into two sections, with the upper section containing a spray nozzle or other device to distribute the feedwater across a large surface area. The lower section of the tank is where the deaeration process occurs, with the dissolved gases being mechanically removed from the water. The deaeration process involves heating the feedwater to a temperature close to the boiling point of water, which reduces the solubility of the gases in the water. The feedwater is then sprayed or otherwise distributed across a large surface area, which allows the gases to escape from the water and be vented out of the de-aerator. The de-aerated water is then sent to the boiler, where it is used to produce steam for power generation. De-aerators are an essential component of modern steam power plants, as they help to prevent corrosion and other damage to the boiler and other components. They also improve the efficiency of the power plant, as de-aerated water produces more efficient steam and reduces the need for chemical treatments to remove dissolved gases.

deaeration, feedwater, dissolved gases, corrosion, efficiency

— Daniel Scott