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China Coatings Online News Information
To solve the chimney flue corrosion problem very well, we must know the flue chimney corrosion principle, anti-corrosion coating corrosion principle mainly contains electrochemical principles, chemical principles and physical principles of the role of anti-corrosion coating electrochemical effect anti-corrosion, anti-corrosion coating chemical principle anti-corrosion, anti-corrosion coating physical principle anti-corrosion.
The flue refers to the connection channel from the place where the soot is generated to the chimney, and the chimney smoke discharge is the buoyant force generated by the density of hot flue gas flowing into the chimney is less than the air density outside the chimney, in order to overcome the resistance of the flue. Now most of the lining of reinforced concrete chimneys generally choose fire-resistant brick or standard red brick, because the flue gas contains a large amount of sulfur dioxide condensation will become more corrosive sulfuric acid, flue gas corrosion experts pointed out that if the chimney's inner wall is not taken into account for effective acid resistance, temperature and corrosion treatment, after a period of use, with sulfur dioxide flue gas From acid-resistant lining brick seam seepage, corrosion of the entire chimney lining wall, destroyed the original due structural force, and ultimately led to the chimney lining cracks, landslides fall off, by the impact of the lining collapse off, steel protective layer with corrosion and cracking, empty drum, large areas have been exposed steel and other damage phenomenon, long-term will be serious accidents.
to avoid this, the inner walls of chimneys are usually treated with corrosion protection. Traditional anti-corrosion treatment measures have polysaccharised, foam glass brick, glass scales, OM coatings, but they each have their own shortcomings, such as polyseptic weather resistance is not good aging, glass scale adhesion is slightly worse, and so on. Flue gas anti-corrosion coatings have solved some disadvantages of traditional anti-corrosion measures.
It is different from traditional anti-corrosion materials, ZS-1041 flue gas anti-corrosion coating high temperature range, light coating, while acid-base resistance, hot expansion and cold shrink performance is good, strong adhesion, long service life, good durability, damaged coating can be easily repaired. No pollution to the environment during preparation, coating and coating, ZS-1041 flue gas anticorrosion coating has excellent resistance to chemical corrosion, especially condensate corrosion, ZS-1041 flue gas anti-corrosion coating also has a high resistance to flexing and thermal expansion resistance, can resist steel chimneys although reinforced but inevitable vibration in operation, flue gas anti-corrosion coating and substitut has very good bonding.
flue gas anti-corrosion coating in the production of fine materials made of inorganic polymer-based inter-permeable network polymers as film-forming substances, flue gas anti-corrosion coating main components for 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 the wear resistance, corrosion resistance. Enhance the impact resistance of the coating with inorderable fibers. ZS-1041 flue gas antiseptic coatings are equipped with appropriate pigments, solvents, additives and added wear enhancer. Therefore, flue gas anti-corrosion coating bureau has a very high water vapor penetration performance, acid-base corrosion resistance, while flue gas anti-corrosion coating has excellent resistance to high temperature and temperature rapid change performance, to meet the long-term operating temperature between 45-600 degrees C fluctuations, short-term operating temperature of 800 degrees C, protection action temperature of 850 degrees C. It can be seen that flue gas anti-corrosion coating must become the anti-corrosion treatment of flue chimneys of the good anti-corrosion materials.