How silica increases in boiler drum?

The deposition is mainly depends on the silica percentage in boiler feed water . water consists the silica which goes to steam drum in which steam and water separation takes place . read more

Due to silica content in the feed water goes to steam drum where separation of wet steam and water takes place and in this way silica content increased in Boiler drum.The most significant factor in minimizing silica deposits is the maintenance of low silica concentrations in the boiler water. read more

Silica is never completely removed in DM Plant. It is still present though in very low concentration. When we feed this DM water to Boiler Drum, its concentration gradually increases. When it reaches to undesirable limit, we use external treatments like phosphate conditioning followed by effective blowdown. read more