Leakage issue in the raw coal gas pipeline at the coke oven outlet
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Our company uses 6-meter coke ovens; after 10 years of use, corrosion and leakage have occurred at the welds in the raw coal gas pipeline running from the outlet of the coke oven gas collection pipe to the gas-liquid separator. Currently, we can only temporarily seal these leaks with glue, but the corrosion and cracks in the welds keep getting worse. Is there a better way to address this type of corrosion, or is it possible to weld at this area?
Welding treatment is preferred; it is best to stop production, replace the components with qualified ones, and then carry out welding.
It is necessary to determine whether it is corrosion or cracking, as the two mechanisms are different. Additionally, knowing the material of the pipeline as well as the operating temperature and pressure is important; without all this information, it is difficult to conduct an accurate analysis. To address corrosion-induced thinning and leakage, it is necessary to analyze the components in the raw gas to determine what is causing the corrosion. I think cracking is caused by stress.
I can’t see the actual images. We often handle gas pipeline leaks, and we can use high-performance underwater repair materials to seal the leaks and reinforce the entire corroded area, which provides long-term protection.