What is Function of boiler dearating feed tank?

A boiler de-aerating feed tank serves to remove dissolved gases, primarily oxygen and carbon dioxide, from the boiler feedwater before it enters the boiler. This process helps prevent corrosion in the boiler system, which can significantly extend equipment life and improve efficiency. The tank also ensures that the feedwater is properly heated and stored, maintaining optimal conditions for steam generation. Additionally, it acts as a surge tank, providing a buffer for fluctuations in water demand.