Corrosion of coke oven gas pipelines

2025-09-28View Original

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Since coke oven gas contains corrosive substances such as H2S and CO2, it causes significant corrosion to pipes, pipe fittings, and equipment. If no measures are taken, this will affect the normal supply of coke oven gas. Due to the slow flow rate of gas in the pipes, organic substances such as tar accumulate to form a spongy deposit, with water accumulating within it; under these conditions, hydrogen sulfide in the gas causes severe corrosion of the gas pipelines. In the first-phase coking plant of Panzhihua Iron and Steel, pipe corrosion was observed; tests showed that the H2S content in the coke oven gas averaged 750 mg/m3, with peaks reaching 1380 mg/m3. Therefore, the high H2S content in the coke oven gas is the fundamental cause of corrosion in the pipes used for transporting this gas.

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Corrosion of coke oven gas pipelines

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