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When coal is burned, in addition to SO2, a small amount of SO3 is also produced; the concentration of SO3 in the flue gas is 10–40 ppm. Due to the water content in the flue gas (4%~12%), the generated SO3 immediately forms sulfuric acid mist. At lower temperatures, sulfuric acid mist condenses into sulfuric acid that adheres to the inner walls of the equipment, or it dissolves in the washing solution. This is the main reason for the relatively severe corrosion of wet absorption towers and related equipment. The main solutions include using corrosion-resistant materials to construct the absorption towers, such as stainless steel, epoxy fiberglass, rigid polyvinyl chloride, ceramics, etc., for the absorption towers and related equipment ； The inner wall of the equipment is coated with anti-corrosion materials, such as water glass ； The equipment is lined with rubber, etc. Flue gas containing soot passes at high speed through the equipment and pipes, where it comes into turbulent contact with the absorbent liquid in the absorption tower, resulting in considerable wear and damage to the equipment. The main solutions include adopting a reasonable process design; for example, efficient dust removal should be carried out before the flue gas enters the absorption tower, in order to reduce the wear on the equipment caused by high-speed flowing dust ； The absorption tower and related equipment are made of wear-resistant materials, and the inner walls of the equipment are lined or coated with wear-resistant materials. In recent years, significant progress has been made in terms of corrosion resistance and wear resistance of absorption towers in the flue gas desulfurization technology for coal-fired industrial boilers and furnaces in our country, which has led to an **increase in the operational efficiency of flue gas desulfurization equipment. The material, lining, or coating of the absorption tower and flue pipes all affect the service life and cost of the installation. The absorption tower body can be made of high (or low) alloy steel, carbon steel, carbon steel lined with rubber, carbon steel lined with organic resin, or fiberglass-reinforced plastic. Due to high labor costs, the United States generally uses alloy steel. Germany generally uses carbon steel lined with rubber (bromobutyl rubber or neoprene), with a service life of up to 10 years. In areas where corrosion is particularly severe, such as the bottom of the slurry tank and the spraying zone, using a double-layer rubber lining can extend the service life by 25%. Initially, ABB used C-276 alloy steel to manufacture absorption towers, with a unit cost of 63 dollars/KW; nowadays, rubber linings are used, resulting in a cost of 22 dollars/KW. When flue ducts are made of carbon steel, the anti-corrosion measures to be adopted depend on the flue gas temperature (whether it is above the acidic dew point or the saturation temperature of water vapor) and its composition (especially the levels of SO2 and H2O). Hitachi’s anti-corrosion measures in Japan include the use of heat-resistant glass flake resin coatings on the flue gas reheater, the flue duct at the inlet of the absorption tower, and the flue gas inlet section of the absorption tower. The spraying area of the absorption tower is lined with stainless steel or carbon steel rubber, while the demister section and oxidation tanks are coated with glass flake resin or lined with rubber. After installing the flue gas desulfurization equipment, the flue gas resistance of the entire desulfurization system is approximately 3000 Pa. The existing exhaust fans alone may not be sufficient to overcome this resistance; therefore, a booster fan (also known as a desulfurization fan) is required ； Or, when selecting the exhaust fan, consider the desulfurization resistance and increase the exhaust pressure. The layout of desulfurization fans involves two main aspects: the desulfurization exhaust fans are located in the area with low smoke temperature, and their capacity is considerable ； The fan is located behind the reheater, which improves the moisture content in the flue gas; no special requirements are needed for corrosion protection of the fan. Boiler cleaning: The boiler is cleaned automatically (to remove scale deposits and clean the furnace chamber; results are seen within three days). Coal savings: Good heat conduction efficiency enhances the combustion rate, thereby reducing coal consumption. (Average 10% or more coal savings) Power savings: Reduces the load on blowers and exhaust fans, thereby saving electricity. (About 15%) Desulfurization: The removal rate of sulfur oxides SOx exceeds 60%. (Exempting you from issues related to substandard desulfurization) Emission reduction: The removal rate of toxic gases such as carbon monoxide exceeds 60%.