The Importance of Water Softener System in Heating Boiler Water Treatment

In the heating system, if water is compared to blood and the boiler is compared to the heart, then boiler water treatment is an indispensable means to provide qualified blood for the heart and ensure the safe and economical operation of the boiler. Boilers are equipment that operate under low pressure, medium pressure, high pressure, and even subcritical and supercritical pressures. Once a mistake occurs in boiler water treatment, it may cause irreparable safety accidents and economic losses. At the same time, boilers are large energy consumers. The fuel consumption of boilers in industrially developed countries generally accounts for the first place, much higher than that of other industries. Improper water treatment will not only cause a waste of fuel, but also seriously affect the operation of the entire system pipe network.

Water softener system is suitable for reducing hardness and softening treatment of food, wine and beverage production water, hospital pharmaceutical softened water treatment, boiler water softened water treatment, central air conditioning softened water treatment, groundwater well water softening and filtering treatment, industrial production water softening and other hardness exceeding the standard. Raw water softening treatment, etc.

1. Boiler Water Treatment is Directly Related to Boiler Safety

The consequences of improper boiler water treatment on the boiler can be summarized as scaling, acid corrosion, alkali corrosion and steam-water co-evaporation. Scaling directly affects the heat transfer effect of the boiler and the normal circulation of steam and water, causing scaling corrosion, fuel waste, shortening the boiler life, tube expansion, deformation or tube explosion accidents. Corrosion directly affects the strength of the material, shortens the life of the boiler, and causes cracks, leaks and even explosion accidents. The problem that boiler water treatment needs to solve is to prevent boiler equipment from scaling and corrosion on the heating surface due to poor water quality during use.

2. Causes of Boiler Corrosion

The steel plate of a hot water boiler for heating is composed of ferrite and cementite. The electrode potential of ferrite is low and the electrode potential of cementite is high. At the same time, the steel plate also contains various impurities. When the surface of the steel plate and When the pot water comes into contact, countless micro-batteries are formed, and the current generated by the micro-batteries causes chemical corrosion in the boiler. In addition, the pot water has not undergone good deoxygenation measures, and the dissolved oxygen in the water precipitates during the heating process of the pot water and adheres to the pipe wall to form oxygen corrosion.

3. Soft Water Treatment Process of Boiler Softened Water Equipment

Ion exchange resin softened water equipment uses strong acidic cationic resin to replace calcium and magnesium ions in the raw water. The water flowing out of the equipment becomes softened water with extremely low hardness. When the resin absorbs a certain amount of calcium and magnesium ions, it must be regenerated. The resin is soaked in saturated salt water to replace the hardness of calcium and magnesium ions in the resin, restore the softening and exchange capacity of the resin, and discharge the waste liquid. The entire regeneration process includes: backwashing, loosening the resin layer, slow washing with salt absorption, exchange reaction, forward washing, washing away the calcium and magnesium ions exchanged by the chemical reaction, and injecting water for the next regeneration.