How are chemicals typically introduced into the boiler?

The introduction of chemicals into the boiler typically occurs through the internal feedwater pipe. This method allows for a controlled and consistent addition of water treatment chemicals, such as oxygen scavengers, scale inhibitors, and alkalinity agents, directly into the feedwater before it enters the boiler. Proper chemical dosing is essential for maintaining water quality and preventing issues, such as corrosion and scale formation within the boiler system.

Using the internal feedwater pipe ensures that the chemicals are effectively mixed with the incoming water as it is preheated and subsequently enters the boiler. This contributes to the overall efficiency of the treatment process, helping to protect the boiler and extend its operational lifespan. Other options may not facilitate the direct and consistent application of chemicals in the manner that the internal feedwater pipe does.