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China Paint Online News Information
Furnace combustion with low ash melting point of coal, or combustion with strong coking coal, it is easy to produce coke hanging on the inner wall of the furnace, combined with the actual operating conditions of users, the latest research and development of a new type of water-resistant ceramics with rust direct construction heat and burn resistance Anti-corrosion coating, which can be applied directly to boiler kilns, high temperature preheaters, high temperature reactors, high-temperature metal furnaces, high-temperature cracking devices, high-temperature pipe towers, high-temperature push equipment, high-temperature drying reaction devices in rusty metal or slightly whitened refractable material substrates. After curing the rust-resistant anti-coking and anti-corrosion coating, the coating temperature resistance can reach 2000 degrees C, long-term fire resistance to high temperature hot air flow high temperature. Rust-resistant anti-coking anti-corrosion coating using the principle of two-way curing, in high temperature heat flow, high temperature flame, high temperature infrared, electromagnetic induction under the non-coating dense smooth, anti-stick anti-focus, improve thermal reflectivity, good thermal shock resistance, high thermal creep resistance, high coating fire resistance heat and high temperature, coating anti-corrosion anti-oxidation effect.
cause of coking is that ash deposited in the melting state is deposited on the hot surface, so it can be seen that the melting point of ash is the key to coking. Rust-resistant anti-coking fire-resistant anti-corrosion coating has a strong osmotic pull, when the paint is painted on the metal, the coating can seep into the metal through the gaps in the metal crystal to form a stable and solid chemical anchor structure, seeping into the surface at the same time, the surface of thin rust pull, so that the thin rust from the metal body is completely wrapped in the coating and react to produce a stable anti-corrosion complex, improve the metal's anti-rust ability.
the melting point of ash is related to the chemical composition of ash, the properties of the medium around ash and the concentration of ash. The chemical composition of ash and the proportion of each component determine the melting point of ash. The ash melting point is lower than the lowest melting point in the mixture. The lower the ash melting point, the easier it is for the boiler to focus on the hot surface. The ash melting point is related to the properties of the medium around the gray. When reductive gases such as CO and H2 are present in the flue gas, the ash melting point is reduced by about 200 degrees C. Anti-corrosion coating personnel suggest that this is because the reductive gas can reduce the high melting point of the ash into a low melting point feO, the melting temperature difference between the two 200 to 300 degrees C. The ash melting point is also related to the concentration of ash in the flue gas. Other things being the same, the ash content in coal is different and the ash melting point changes. This is because the ash in the heating process, the more frequent contact with each other, the more likely it is to produce fusion, decomposition, melting, the greater the likelihood of melting point reduction. Rust-resistant anti-coking anti-corrosion coating brush on refractable materials can be directly pulled and wrapped in thin-layer powder, making it one of the pigments in the coating, dense coating after film formation, and comprehensively improve the anti-oxidation corrosion capacity of refractable materials at high temperatures. Rust-resistant anti-coke anti-corrosion paint in a variety of scale-like anti-corrosion ceramic powder, can be stacked like fish scales into a film, after the film coating more dense, corrosion-resistant, thermal reflection is more excellent. Rust-resistant, anti-coking and anti-corrosion coatings painted on surfaces in direct contact with heat sources (e.g. direct contact with fire) ensure that the coating does not corrode, oxidize and reduce sticky focus in high temperature environments. High temperature coating stability, dense wear resistance, in high temperature environment will not react with other active molecules, long service life, reduce furnace hanging coke to improve combustion corrosion and anti-corrosion coating popularity.
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