Anti-corrosion coating system for the inner wall of crude oil tanks – heating coils inside insulated tanks

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Steam at around 180 degrees Celsius flows through the coil, while the temperature of the oil generally does not exceed 90 degrees Celsius; therefore, the temperature of the outer surface of the coil is estimated to be between 90 and 150 degrees Celsius. The key is that this coating must be able to withstand long-term immersion in hot oil. The coatings commonly used in current designs are: silicone heat-resistant paint, epoxy-modified silicone heat-resistant paint, and inorganic zinc-rich primer; the thickness of these coatings is 150–200 microns. I believe that silicone heat-resistant paint has a low cross-linking density, so its oil resistance is definitely inferior to that of the latter two ； Zinc-rich primer; the reasons why its use is not recommended were mentioned earlier ； Therefore, the most suitable one should be epoxy-modified silicone heat-resistant paint.