Why do we need to treat boiler water
Why do we need to treat boiler water
1、 Fuel waste
After boiler scaling, the heat transfer performance of the heat transfer surface decreases, and the heat released by fuel combustion cannot reach the water inside the boiler in a timely manner, taking away a large amount of heat. Efficiency. In order to maintain the rated parameters of the boiler, fuel needs to be added, so the fuel is wasted. On a scale of about 1 millimeter, 10% of the fuel is wasted.
2、 The heat transfer surface will be damaged
Boilers with scale have poor heat transfer performance, which means that the combustion heat of fuel cannot be quickly transferred to the water inside the boiler, resulting in an increase in furnace temperature and flue gas. Therefore, the temperature difference between the two sides of the heating surface increases, the temperature of the metal wall rises, the strength decreases, and the pressure inside the pot causes swelling or even bursting.
3、 Metal corrosion
The oxygen, acid, and alkali substances in water can corrode the metal surface of the boiler, causing the wall thickness to thin, resulting in depressions and pitting, thereby reducing the strength of the boiler and seriously affecting its safe operation. Especially for hot water boilers, the circulating water volume is large and the corrosion is severe. Scales containing expensive iron are also prone to metal corrosion. Black metal corrosion products are easily rescaled. This is a vicious cycle that quickly leads to damage to boiler components. Especially the metal corrosion products in oil fired boilers pose a greater threat.
4、 Soda water tends to coexist
Apart from improper operation, the reason for mixing soda water together is due to the presence of sodium chloride, sodium phosphate, grease, and silicides in boiler water, or organic matter and alkali saponification. During the boiling and evaporation process of the water in the boiler, the surface of the bubbles forms a co evolution of soda water and water.