High-performance polymer coatings provide significant corrosion protection in GGH heat pipe exchangers
Thread Content
These images show the effects of tube anti-corrosion measures and their absence in the GGH system for flue gas in a waste incineration power plant. Operating conditions: inlet temperature of 55~65 degrees, outlet temperature of 80~95 degrees. The harmful substances in flue gas are much more complex than those in coal flue gas, and they cause greater corrosion to metals. The heat pipe material is ND steel. Used for 6 months. Figure 1 shows the condition of the flue gas outlet without anti-corrosion treatment and cleaning. Figure 2 shows the corrosion pattern on the surface of the heat pipe after cleaning. Figure 3 shows the application of the polymer alloy coating at the flue gas outlet (80–95 degrees). Figure 4: Application of the coating at the flue gas inlet.
The use of high-performance polymer coatings in GGH heat pipe exchangers effectively prevents corrosion, especially in complex and harmful flue gas environments. By comparing the uncoated and coated heat pipes, it is evident that the coated heat pipes suffered less corrosion after 6 months of use, thereby effectively extending the service life of the equipment. .