Silica in boiler water (boiler drum)

Silica is a common impurity that can be found in boiler feedwater, and if it is not properly removed or controlled, it can cause various issues in the boiler drum.

When water is heated in a boiler, it evaporates and leaves behind any impurities, such as silica, which can then concentrate in the remaining water. If the concentration of silica in the boiler drum becomes too high, it can lead to the formation of hard, glassy deposits on the inside of the drum and other components of the system. These deposits can reduce heat transfer efficiency and lead to overheating, which can cause damage to the boiler and potentially create safety hazards.

To prevent these issues, it is important to control the level of silica in the boiler water. This can be done through a combination of water treatment techniques, such as ion exchange or reverse osmosis, and regular monitoring and testing of the water quality. In addition, some boilers may be equipped with silica monitoring systems that can alert operators to any changes in the silica levels and help them take appropriate corrective actions.