Causes of wall perforation in flue gas desulfurization quench towers
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For the flue gas desulfurization quench tower, Q235+316L composite steel is used in the section where the flue gas enters the tower, while Q235+resin glass flake material is used in other areas. During operation, a hole appeared about 10 centimeters below the welds in the lower part of the quench tower, at the entrance area for flue gas. Based on the shape of the leakage, it was determined that it was caused by erosion. Due to the presence of resin glass flakes inside, there was concern that high welding temperatures might damage these flakes; therefore, welding was not attempted to seal the leak. I would like to know what approach should be taken to address this issue.
It is suspected that there were quality issues with the glass flake lining during installation, causing it to fall off under the impact of the flue gas. The flue gas, along with dust containing water, then struck the vessel walls directly, resulting in perforations and leaks.