Corrosion of converter gas pipelines

Thread Content

In the converter gas system, converter gas mainly contains CO, CO2, O2, and N2; among these, O2 and CO2 cause corrosion of gas pipelines and facilities to varying degrees and in different ways； CO2 is the most abundant impurity in converter gas, and it can cause various types of corrosion such as acid corrosion and stress corrosion; therefore, it is presumed to be the main factor contributing to the severe corrosion of converter gas transmission facilities ； The oxygen content in gas is low, but it still has a significant impact on the corrosion of converter gas transmission facilities. Since the gas contains water, and as long as there is oxygen present, it can lead to alternating cycles of wet and dry conditions, thereby accelerating corrosion. The gas before electrostatic dust removal has a high dust and moisture content, resulting in severe corrosion of the pipes ahead of the cabinet, the gas tank, and the electrostatic dust collector. High gas temperature is also a key factor in the corrosion of its pipelines and facilities. Gas condensate is weakly acidic, with pH values of 5.7 and 4.46 respectively, and total acidity levels of 2.5 and 3.0 respectively; it causes corrosion to pipes.