Acid-resistant chimney anticorrosive paint has greater advantages than glass scales

China Coatings Online News: The flue gas in
chimney pipes contains acidic and corrosive gases such as sulfur dioxide, sulfur trioxide, hydrogen fluoride and hydrogen chloride, which are high in temperature and have water vapor, which condenses into acids to smoke. Chimney corrosion, traditional chimney anti-corrosion glass scale coating anti-corrosion, glass scale coating with good chemical resistance glass scales as the main anti-rust pigment coating, acid and alkali resistance is very good, but the thermal shock is not good easy to fall off the positive pieces. Now anti-corrosion coating technology upgrade, completely replaced the glass scale anti-corrosion coating, heat shock adhesion to win the glass scale anti-corrosion coating.
According to the different corrosion characteristics of high temperature chimneys, it can be divided into 5 main corrosion zones, namely, the original flue gas corrosion zone, the temperature flue gas corrosion zone, the inlet flue dry and wet interface corrosion zone, the absorption tower corrosion zone and the net flue gas corrosion zone. Boiler emissions of flue gas general temperature of about 180 degrees C, relative humidity of 3%, containing ash and a variety of corrosive components, such as SO2, HCl, NO2 and salt spray, and even some fluoric acid in the presence of strong corrosion gases. In the process of desulfurization, it also has the characteristics of alternating acid and alkali quality, so the equipment corrosion is serious, anti-corrosion conditions are more demanding. In recent years, in the chimney chimney flue corrosion coating research and development practice, anti-corrosion research and development personnel learn from the previous experience and lessons of flue gas chimney flue corrosion, according to hundreds of flue flue scene, do everything possible, bold innovation, the use of new technology, combined with high-tech, smoke The successful application of gas anti-corrosion coating coating, the coating's amazing anti-high temperature flue gas, anti-chimney flue condensate corrosion effect, high temperature, high hardness wear resistance, acid resistance to alkali, good expansion coefficient, can be used for more than 10 years.
High temperature flue gas acid corrosion on the use of anti-corrosion coatings, flue gas chimney pipe sulfur dioxide, sulfur trioxide, hydrogen fluoride, hydrogen chloride and other acidic corrosive gases will not condense into acid to corrode the chimney, chimney life is much greater than 30 years. In order to solve the problem of anti-corrosion of wet chimney pipe chimney, we must seek a kind of anti-corrosion, temperature-resistant, high-temperature and wear-resistant adhesion and good material, flue gas chimney anti-corrosion coating provides us with a better choice. So far, at least, this should be the best way to solve the problem. Flue gas chimney anti-corrosion coating is made of fine materials, inorganic polymer-based inter-permeable network polymer as a film-forming substance of flue gas chimney anti-corrosion coating, the main components of the coating using nano-powder, ceramic microbeads, silicon carbide, boron nitride, fine crystal alumina, ultra-fine zinc oxide, titanium oxide, etc., to make metal ceramic functional special fillers to improve wear resistance, corrosion resistance. Use inororable fibers to enhance the resistance of the coating to shock. With appropriate pigments, solvents, additives, and added wear enhancer. Flue gas chimney anti-corrosion coating and traditional polyp, foam glass brick, glass scales, OM coating or glue, it has high temperature resistance, light coating, high hardness, long service life, good durability, service life can be up to 10 years, in the course of operation damaged coating can be easily repaired. No contamination of the environment during preparation, coating and coating. 1, flue gas chimney anti-corrosion coating has excellent resistance to chemical corrosion, especially condensation sulfuric acid corrosion, 2, flue gas chimney anti-corrosion coating has very high anti-water vapor penetration performance, 3, flue gas chimney anti-corrosion coating coating has excellent resistance to high temperature and temperature rapid change performance, to meet the long-term operating temperature between 45-600 degrees C Volatility, short-term operating temperature of 800 degrees C, protection action temperature of 850 degrees C; 4, flue gas chimney anti-corrosion coating also has a higher resistance to deflection and thermal expansion resistance, can resist steel chimneys although reinforced but still inevitable vibration in operation;
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