Demineralized water boiler industry in the application
A qualified boiler water treatment agent must effectively play anti-scaling gentle corrosion function. Two Anti-scaling mainly refers to the boiler corrosion and scale inhibitors, including boiler and steam pipe, through which water pipe heat exchanger and.
Ca2 +, Mg2 + is mainly a scale ion, on the market at present the most used by boiler with ion exchange, to get rid of them. But some other water soluble salts due to evaporation and concentration of water is still increasing concentration, beyond its solubility and scaling. Especially in high temperature, such as pipe smoke, because the water, very anxious fierce vaporization might cause some salt for local high concentration and crystallization precipitation. It is used in many demineralized water boiler scale. Still Although this kind of phenomenon can ease by increasing the amount of waste, but the hand of energy, on the other hand, because of the increased amount of water alkalinity, makes the pot often is lower than the national standard of floor, quicken the speed of corrosion. Therefore, the boiler water to take appropriate measures of anti-scaling is very necessary.
The dissolved oxygen in water is the main factor causing boiler corrosion. Due to the high temperature, oxygen and pan quickly reaction. For the boiler deaerator, adopting measures of chemical oxygen is necessary, for the boiler deaerator, because of the deaerator's oxygen can thoroughly, especially some of the continuous operation of the boiler, in every just when blow-in, thermal deaerator almost no effect, so take a chemical oxygen as a remedy is necessary.
Boiler corrosion caused by another major factor is Fe3 +. Now the office, hotel etc mostly adopts closed heating system, condensed reuse can be accounted for about 80% of the boiler make-up water, steam pipeline, pipe if condensate, heat exchanger etc. No necessary measures, pipeline corrosion of iron is dissolved into the surface water, because Fe3 + condensation has strong oxidizing, can greatly improve the boiler corrosion speed.
The CO2 gas boiler make-up water into the boiler water after being heated from escaping steam, heat exchangers, again into the condensed water, soluble in water become acidic. In acidic condition of iron, accelerate corrosion greatly condenses into water, iron, sometimes had to drop, because water condensation water temperature is higher, it would cause a waste of energy.