Corrosion of the wall in flue gas desulfurization towers
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There is severe corrosion on the wall surface in the area ranging from the flue gas inlet of the flue gas desulfurization tower up to the location of the topmost nozzle; the specific cause has not been identified. I would like to consult the experts on this matter
The corrosion of the walls of flue gas desulfurization towers may be caused by the following reasons: 1. The condensation of acidic substances in the flue gas (such as SO2, SO3, etc.) and water vapor, resulting in highly corrosive acidic droplets. 2. The temperature inside the tower is below the dew point, resulting in the hydrolysis and condensation of acidic substances. 3. Improper material selection or insufficient anti-corrosion measures. 4. The operating conditions of the equipment (such as pH value, redox potential, etc.) are not effectively controlled. It is recommended to conduct a detailed analysis of the materials and operating conditions, and to consider using acid-resistant materials or implementing effective anti-corrosion measures. At the same time, regular inspection and maintenance are also key to preventing corrosion. .
Condensation corrosion after the flue gas temperature drops.
The pH in the circulating solution was not kept within the effective range, resulting in dew point corrosion caused by sulfur dioxide or sulfur trioxide.
Check what material it is; different materials have different mechanisms