Flue gas and air ducts are the core channels for flue gas transportation in thermal power plants, operating continuously under harsh conditions of high temperature, strong corrosion, and intense scouring. Corrosive media such as sulfur dioxide and hydrogen chloride generated from coal combustion, combined with fly ash particles in the flue gas, create a dual "corrosion-scouring" attack that readily causes wall damage and leakage in the ducts. This not only significantly shortens equipment service life but also increases plant operation and maintenance costs and safety risks. TD240K Wear-Resistant Ceramic Particle Adhesive, with its excellent wear and corrosion resistance and convenient application characteristics, has become the preferred solution for anti-wear and anti-corrosion protection of flue gas and air ducts in thermal power plants, fundamentally addressing duct degradation and effectively extending stable equipment operation cycles.
(I) Core Pain Points of Corrosion and Wear in Thermal Power Plant Flue Gas and Air Ducts
Damage to flue gas and air ducts in thermal power plants results from the superposition of multiple factors under complex operating conditions. The combined effect of chemical corrosion and physical scouring is the primary cause of equipment degradation:
(1) Chemical aspect: Acidic gases in the flue gas combine with water vapor to form acid solutions, causing electrochemical corrosion on the duct wall surfaces, resulting in pitting corrosion and reduced structural strength of the metal substrate.
(2) Physical aspect: Fly ash particles carried by high-velocity flue gas continuously scour the inner duct walls, destroying the metal oxide film and further accelerating the corrosion process. This effect is particularly pronounced at structural dead zones such as elbows and reducers.
(3) Thermal fluctuations: The significant temperature variations during plant start-up and shutdown cause thermal stress cracking in the metal substrate, providing pathways for corrosive media penetration and creating a vicious cycle. Traditional protective materials are prone to detachment and cracking, making long-term resistance to such conditions difficult.
(II) Core Adaptability Features of TD240K Wear-Resistant Ceramic Particle Adhesive
Addressing the specific operating challenges of thermal power plant flue gas and air ducts, TD240K Wear-Resistant Ceramic Particle Adhesive incorporates a high-performance formulation that creates multiple protective barriers, with core features that closely match the requirements of duct service:
(1) Dual protection – wear and corrosion resistance: The product is composed of high-performance wear-resistant materials such as metal carbides and fine spherical ceramics, combined with a modified toughened heat-resistant resin. The high hardness of the ceramic particles effectively resists high-velocity scouring by fly ash, preventing physical wear, while the modified resin system offers excellent chemical corrosion resistance against acids, chlorides, and other media, preventing electrochemical corrosion and achieving both wear and corrosion protection.
(2) Temperature adaptability and toughness: The material combines heat resistance and toughness, accommodating temperature fluctuations in the ducts without thermal stress cracking, perfectly matching the high-temperature and variable-temperature conditions of flue gas and air ducts.
(3) Fast room-temperature curing – efficient application: It supports rapid room-temperature curing, ready for service within 24 hours at 25°C. Heating to 80°C and holding for 2 hours improves overall performance by 30%. This significantly shortens construction cycles, avoiding production losses due to extended plant downtime and meeting the need for rapid production resumption.
(4) Flexible application – adaptable to irregular shapes: It can be directly applied without complex molds, providing complete coverage without dead zones on irregular structures such as elbows and reducers. Coating thickness can be flexibly controlled between 3–8mm, with a maximum of 30mm, allowing customized protection based on wear levels at different locations.
(5) Strong adhesion – no detachment: The coating exhibits excellent wetting and adhesion to metal substrates during application, with the first layer firmly bonding to the substrate after compaction, effectively preventing coating detachment during service.
(III) Long-Term Protection – Extending Duct Service Life
TD240K Wear-Resistant Ceramic Particle Adhesive can be applied for full pre-coating or localized repair of flue gas and air ducts in thermal power plants. After application, it forms a dense polymer-ceramic composite coating that fundamentally breaks the "corrosion-scouring" vicious cycle:
(1) The dense coating completely isolates corrosive media from the metal substrate while resisting continuous scouring by fly ash particles, significantly enhancing the duct's resistance to wear and corrosion and fundamentally addressing the core equipment degradation issue.
(2) Compared with traditional protective materials, this product effectively reduces the duct damage rate, lowers maintenance frequency and post-maintenance costs, and extends overall equipment service life.
(3) The convenient application method significantly shortens plant shutdown time for maintenance, improves overall equipment operating efficiency, and provides reliable assurance for long-term stable operation of the ducts.
As a high-performance wear-resistant and anti-corrosion material dedicated to the power industry, TD240K Wear-Resistant Ceramic Particle Adhesive precisely matches flue gas and air duct conditions through its specialized formulation. With its outstanding performance, it effectively resolves equipment wear and corrosion issues, making it an ideal choice for thermal power plants seeking to improve equipment operational reliability and reduce overall operation and maintenance costs. It safeguards safe, efficient, and stable power production.