Importance and methods of boiler tube corrosion prevention

Importance of boiler tube corrosion prevention:

1. Ensure boiler safety
The boiler is an indispensable energy equipment in the production process, and it is also one of the equipment with greater safety hazards. The degree of corrosion of the boiler pipe is directly related to the safety of the boiler.

In industrial production, the thermal load of the boiler is too large, and the chemical composition, impurities and dissolved oxygen in the boiler water can easily induce corrosion of the boiler tube, forming cracks or leaks, posing a potential threat to production safety. The use of anti-corrosion materials such as anti-corrosion coatings and corrosion-resistant alloys can effectively improve the corrosion resistance of boiler pipes and ensure the safe operation of boilers.

2. Extend equipment life
The boiler is one of the expensive production equipment, and its life is closely related to production quality. Problems such as corrosion and scaling of boiler tubes are one of the main reasons affecting the operating life of the boiler.

Corrosion and scaling of boiler tubes will not only affect the heat exchange efficiency, but also damage the pipe surface, reduce the seismic resistance of the pipe, and lead to operational problems. Regular anti-corrosion treatment of boiler pipes can effectively reduce problems such as corrosion and scaling of pipes, extend the service life of boilers, and reduce production costs.

3. Energy saving and environmental protection
The boiler is one of the equipments with huge energy consumption in the production process. Problems such as corrosion and scaling of boiler pipes will increase the thermal resistance of the pipe surface, reduce the heat transfer efficiency, thereby wasting energy and increasing production costs.

Using anti-corrosion materials such as anti-corrosion coatings and corrosion-resistant alloys to treat boiler pipes can not only reduce energy consumption and improve production efficiency, but also reduce environmental pollution and achieve the purpose of energy saving and environmental protection.

The internal corrosion problem of boiler tubes can be solved by the following methods:

1. Cleaning and descaling
Regular cleaning and descaling of boiler tubes is an important measure to prevent corrosion. Use appropriate amounts of chemical cleaning agents and solvents to remove deposits and corrosion products on the inner wall of the pipe, especially scale and rust.

2. Anti-corrosion coating
Coating a layer of anti-corrosion coating on the inner wall of the boiler tube can effectively reduce corrosion. Common anti-corrosion coating materials include porcelain, rubber, plastic, etc. These coatings can isolate the metal surface from contact with the corrosive medium, thereby reducing the occurrence of corrosion.

3. Electrochemical protection
Electrochemical protection can be achieved by placing a cathode and anode protective layer on the inner wall of the boiler tube to form a battery. Usually, metals such as zinc, aluminum, and magnesium are used as cathodes and cathodes to protect the metal surface from corrosion through the action of electric current.

4. Pipe material selection
Choose materials with good corrosion resistance to make boiler tubes, such as stainless steel, nickel alloy, etc. These materials have high corrosion resistance and can extend the service life of boiler tubes.

5. Control water quality
The water quality of boiler water has an important influence on corrosion. Controlling the oxygen content, alkalinity, salinity and other indicators in the water can reduce the occurrence of corrosion. Set up a sewage discharge device for the boiler to regularly discharge scale and impurities to maintain good water quality.

6. Regular inspection and maintenance
Regular inspection and maintenance of boiler tubes is an important means to prevent corrosion. Timely detection of corrosion problems and taking corresponding repair measures can reduce the damage of corrosion to boiler tubes.

In summary, the internal corrosion problem of boiler tubes can be effectively solved through cleaning and descaling, anti-corrosion coating, electrochemical protection, material selection, water quality control, and regular inspection and maintenance.

Read more: Low and medium pressure carbon steel boiler tubes or Carbon steel ERW boiler tube