**Causes and Hazards of Boiler Slagging?** This product is non-toxic, non-flammable, and non-explosive, with a pH close to neutral. It does not corrode the boiler and remains stable over long periods. Even if it clumps due to long-term storage, it will not affect its performance or effectiveness.
**Why Does Slagging Occur in Boilers and What Are the Risks?**
When fuel such as coal or oil is burned, it contains carbon, sulfur, moisture, and other mineral impurities. For example, fuel oil typically consists of 82.5–86.2% carbon, 12.5% hydrogen, and small amounts of sulfur, oxygen, nitrogen, and other compounds. When burned completely, these substances react with oxygen to produce mainly carbon dioxide and water. However, in cases of insufficient oxygen, incomplete combustion occurs, leading to the formation of carbon monoxide, solid carbon particles, and soot. Soot often contains elements like sodium, magnesium, vanadium, nickel, iron, and silicon.
During combustion, flue gas forms a system of CO₂, SO₃, and H₂O. As this gas comes into contact with heat exchangers, the surface temperature is much lower than the flue gas temperature, causing various components to condense. This leads to the formation of highly corrosive sulfates and sulfites on the boiler's heating surfaces, while also allowing ash from the flue gas to stick to the surfaces, forming a thick, sticky layer that is hard to remove.
According to *Heat Transfer* by Yang Shiming, the thermal resistance of boiler ash is approximately 400 times higher than that of the boiler’s heating surfaces. This significantly reduces efficiency and shortens the boiler’s lifespan.
In large-scale power generation and thermoelectric boilers, the amount of coal burned is much greater, resulting in more ash and slag compared to industrial boilers. The accumulation of ash increases with longer burning times and changes in coal type—especially when the coal has high sulfur content or a low melting point. This can lead to large chunks of coke falling off, causing flameout, furnace shutdown, and even serious accidents, including injuries or fatalities.
Coking, ash buildup, and scaling cause significant damage to boiler operations and maintenance. To prevent these issues, using an effective boiler decoking agent is essential.
At our company, we specialize in high-quality boiler decoking agents. We are committed to providing reliable products, competitive pricing, and excellent service to our customers. We appreciate your continued support and trust.
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