The inner wall of the flue gas desulfurization tower is anti-corrosion with metal nano-polymer alloy coating

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The main source of corrosion in flue gas desulfurization equipment is SO2 contained in the flue gas. When sulfur-containing flue gas is in desulfurization condition, under the action of forced oxidation environment, SO2 in the flue gas first reacts with water to form H2SO3 and H2SO4, and then reacts with the alkaline absorbent to form sulfate precipitation and separation. At this stage, the process environment temperature is exactly at the activated corrosion temperature of dilute sulfuric acid, which has a fast corrosion rate and strong penetration ability. Therefore, its intermediate products H2SO3 and H2SO4 are the main causes of equipment corrosion. At present, the most commonly used method for desulfurization towers is resin glass flake lining. There is a common problem with anti-corrosion coatings: the coating is brittle, the coating is too thick, and the service life is short. It is easy for the anti-corrosion coating to form a layer with the metal surface and lose its anti-corrosion effect. In addition, there are safety hazards during the construction process. The use of metal nanopolymer alloy materials can solve the metal surface corrosion problem of desulfurization towers and can achieve good economic benefits.