Why do we need to choose softened water for boiler makeup water?

Why do we need to choose softened water for boiler makeup water?

Why does boiler makeup water need softened water? This is because the alkaline salts such as calcium and magnesium present in the boiler feed water will combine with the bicarbonate ions in the water to form insoluble precipitates such as calcium carbonate and magnesium carbonate, known as scale. Scale will adhere to the inner walls and pipelines of the boiler, forming thermal resistance and overheating, reducing the heat transfer efficiency of the boiler, increasing fuel consumption, and also causing pipeline blockage and high temperature rise, reducing the safety and service life of the boiler.

The purpose of softening water is to remove alkaline ions such as calcium and magnesium from the water, thereby reducing the generation of scale. The commonly used methods for softening water include chemical softening, ionization exchange softening, and reverse osmosis softening. Chemical softening involves the reaction of acidic substances such as oxalic acid and citric acid with alkaline ions in water to convert them into soluble salts, thereby achieving the goal of softening water. Ionization exchange softening is achieved through ion exchange resins, replacing hardness ions with sodium ions during the process, namely calcium and magnesium ions. Reverse osmosis softening uses a semi permeable membrane to separate solutes from water, and then dilutes the pure water back to the required water quality standard.

Softened water has multiple benefits for boilers. Firstly, softened water can effectively reduce the frequency of boiler cleaning and reduce maintenance and repair costs. Secondly, softened water can improve the heat transfer efficiency of boilers and reduce fuel consumption. Thirdly, softened water can reduce the blockage and aging rate of boiler pipes, and extend the service life of the boiler. Softening water treatment can also reduce the dissolved gases in water, such as oxygen, which can avoid corrosion to the boiler. Reduce maintenance costs. The use of softened water can avoid scaling and corrosion, which can reduce the time and cost of cleaning and repairing the boiler. It can also improve operational efficiency. After softening water treatment, it can reduce the formation of scale, improve the thermal efficiency of the boiler, and make the operation of the boiler more efficient. Therefore, in order to ensure the safety and economic operation of the boiler, the boiler make-up water needs to be softened. In short, the softening treatment of boiler feedwater is an important part of boiler operation management, which can ensure the safe and stable operation of the boiler, reduce energy consumption and environmental pollution.

The above is what Hongjie Water brings to everyone about "Why do we need to choose softened water for boiler makeup water?" I hope it can help you!