Condition of an 8-year-old coating on the tube bundle of a polymer alloy heat exchanger
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The image below shows the inner wall of the heat exchanger tube bundle; the fluid used is circulating water, at a temperature of 25 to 35 degrees Celsius. Figure 2 shows the outer wall of the heat exchanger tube bundle, with the fluid being oil and gas (gasoline), at a temperature of 90–60 degrees. Generally, carbon steel pipe bundles without anti-corrosion treatment have a service life of only 3 years, while those with anti-corrosion treatment can be used for at least 8 years or more.
Polymer coatings made of polymer alloys can significantly enhance the corrosion resistance and service life of heat exchanger tubes; under appropriate temperature and medium conditions, their service life can reach or exceed 8 years. .