Must the water in a gas boiler be softened?

Must the water in a gas boiler be softened?

I believe that many users have heard the boiler business staff of major manufacturers talk about the need to configure softened water treatment facilities for boilers when purchasing gas boilers. So, what exactly does this demineralized water treatment facility do? What is the necessity for gas boilers? Let’s take a comprehensive look at this demineralized water treatment device today.

What is demineralized water?
Soft water refers to water after equipment softening and deaeration treatment. Soft water treatment can reduce the content of calcium and magnesium salts in hard water such as tap water and mineral water, so that its water quality meets the water quality standards required by boiler equipment.

Why use soft water?
Scale is known as the “source of harm” to all types of boilers. The use of soft water can prevent the boiler from scaling and reduce the corrosion of the heated surface metal. Reduce boiler failure rate and extend service life.

How does scale come about?
The impurities in the boiler water are continuously concentrated during the chemical reaction during heating and evaporation. When these impurities reach saturation in the pot water, solid matter is precipitated. The precipitated solid object is called water slag if it is suspended in the pot water; if it is firmly attached to the inner wall of the furnace, it is called scale.

What are the hazards of scale to the boiler?
a. The heating pipe is burned due to overheating and the scale has poor thermal conductivity. Too much and too thick scale of the heating pipe will cause the internal temperature of the heating pipe to not spread and cause cracks in the outer pipe of the heating pipe.
b. A large amount of energy is wasted. When the boiler is scaled, the thermal conductivity of the heating tube is reduced, which prolongs the heating time and increases the power consumption of the equipment. The higher the working pressure of the boiler, the lower the thermal conductivity of the scale, the higher the thickness of the scale, and the greater the amount of wasted electricity.
c. Reduce steam pressure When scale is formed on the inner wall of the boiler or the heating pipe, the heat will not be transferred to the boiler water quickly, and the steam pressure of the boiler will be reduced, so that the output pressure of the equipment cannot meet the requirements for use.
d. Increasing the maintenance cost After the boiler wall or heating tube is scaled, it is very difficult to remove, especially the heating tube or furnace rupture and corrosion caused by scale, which not only damage the equipment, but also consume a lot of manpower and material resources for maintenance. , Resulting in increased maintenance costs.
e. Reduce the boiler service life The boiler needs to be cleaned with chemical agents after severe scale formation. Excessive cleaning times will cause damage to the boiler, reduce the boiler service life, and increase safety risks.
According to the equipment requirements of gas boilers, the use of demineralized water is a benefit in the long run, and it is also one of the necessary conditions to ensure the stable operation of the boiler. Therefore, professional boiler business staff will emphasize to the user that it is necessary to configure the boiler demineralized water treatment. Device.