Failure analysis and countermeasures of corrosion in reflux system of acid water stripping unit in coal chemical industry
In recent years,corrosion and leakage of acid water reflux system equipment and pipeline in a coal chemical enterprise occurred frequently,which seriously endangered the production safety.Through the detection and analysis of the corrosion morphology,products and process media of the reflux system equipment,and combined with the actual production process,the root cause of corrosion failure in the reflux system of acid water stripping unit was explored.The results showed that the corrosion of acid water stripping unit mainly resulted from the electrochemical corrosion cycle constructed by sulfide and cyanide,in which the strong complexation of cyanide further aggravated the corrosion failure of reflux system equipment.Based on the above causes,the corresponding protection suggestions were put forward.
coal chemical industryacid water strippingreflux systemcorrosionfailure analysis
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