Explosion of flue gas pipeline anticorrosive coating

June 20, 2025

The temperature of chimney flue gas typically ranges from around 70°C to 500°C, with about 3% humidity and various corrosive components including ash, SO₂, HCl, NO₂, salt mist, and even hydrofluoric acid, which can be highly corrosive. During the desulfurization process, the equipment experiences alternating acidic and alkaline environments, leading to severe corrosion. To address these challenges, Zhisheng Weihua Coatings, a leader in developing chimney flue corrosion coatings, has leveraged advanced technologies and innovative materials. Their team drew insights from hundreds of flue cases to develop ZS-1041, a cutting-edge flue gas anti-corrosion coating produced by Beijing Zhisheng Weihua Company. This coating represents a significant breakthrough in protecting industrial equipment against harsh flue gas environments. ZS-1041's film-forming substance is based on an inorganic polymer interpenetrating network polymer, ensuring excellent film formation and strong adhesion. The paint pigment primarily consists of inorganic anti-corrosion materials, nano-silica micro-powder, silicon carbide, boron nitride, fine-grained alumina, graphite, ultra-fine zinc oxide, titanium oxide, and other components. These materials, combined with cermet functional fillers, enhance wear resistance and corrosion resistance. Additionally, inorganic fibers are added to boost the coating's impact resistance. By incorporating appropriate pigments, solvents, additives, and wear-resistant enhancers, the coating achieves superior performance.

ZS-1041 offers exceptional corrosion protection, resisting both acids and bases simultaneously while defending against Hâ‚‚S, chloride ions, sulfur dioxide, sulfur trioxide, hydrogen chloride, and high-temperature water vapor found in flue gas. It also prevents condensation-induced corrosion, stress corrosion, chemical corrosion, and potential corrosion. The coating demonstrates excellent adhesion to substrates, reaching a cohesive strength of one level. Its unique formulation includes metal oxide nanomaterials and rare earth oxide ultrafine powders, creating a dense interface transition layer that matches the thermodynamic properties of the base material. This makes ZS-1041 ideal for reinforcing steel chimneys, even when subjected to operational vibrations. The coating's ability to withstand thermal expansion and deformation further enhances its reliability.

One of ZS-1041's standout features is its high-temperature resistance. Both the base and filler consist of high-temperature inorganic compositions, allowing long-term heat resistance up to 600°C and short-term resistance up to 750°C. This makes the coating suitable for extreme temperature fluctuations within the flue system. The ceramic functional fillers used in the coating provide a low surface energy and ultra-low friction coefficient, preventing the adhesion of sticky substances like tar. This combination of materials results in excellent wear resistance and smooth anti-corrosion properties, capable of withstanding high-speed impacts and airflow erosion from smoke dust.

Another key advantage of ZS-1041 is its excellent thermal shock resistance. Even when exposed to rapid temperature changes in the flue gas environment, the coating remains intact without cracking or peeling. This durability ensures prolonged service life, which is further enhanced by the use of nano-materials in the formulation. ZS-1041 boasts an impressive lifespan and is environmentally friendly during production, application, and maintenance. Damaged areas can be easily repaired, minimizing downtime and costs.

In conclusion, ZS-1041 represents a major advancement in flue gas anti-corrosion technology. Its combination of high-temperature resistance, wear resistance, and corrosion resistance makes it an essential solution for protecting industrial equipment from aggressive flue gas environments. As industries continue to seek more durable and efficient protective coatings, ZS-1041 stands out as a reliable choice that delivers long-lasting performance and peace of mind.

 

Fume gas pipeline anti-corrosion coatings

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