Study Of Pipeline Network Wall Corrosion Mechanism And Antisepticise Measures In Hulunber 301 Section

The paper investigated the corrosion status of Hulunber 301 section, developed the practical experimentation and room examination testing analysis, which definituded the corrosion cause and corrosion peculiarity. With the combination of production, materials chemistry medicament filtration, coating and nonmetallic performance test, the integrate economy rational anticorrosion measure were optimized. Also, this anticorrosion measure have applied and directed the Hulunber Field engineering construct.After the analysis in Hulunber 301 section, the corrosion occurs mainly in inner corrosion and the outer corrosion is indistinctness. In affusion and heating system, the corrosion gives priority to oxygen corrosion, which the supplement of animalcule corrosion and carbon dioxide corrosion. In life drinking water system, the corrosion in stainless steel jar and pipeline wall usually generate welding line corrosion. Besides, the medium corrosion cause are definituded, include as the increase of dissolve of oxygen, chlorine hydronium concentration and sulphate deoxidize bacterium amount, the corrosion velocity also increases sharply. Through the room dynamic experimentation, the corrosion cause of Hulunber 301 section pipeline network are all the factors above.Based on the corrosion cause, corrosion characteristics of Hulunber 301 section, we developed the defending measure research in pipeline materials adaptability, coatings anticorrosion countermeasure, chemistry medicament selecting ect. Through the technique economy contrast analyzed, in allusion to the model technics condition and protect object, the synthesis anticorrosion project were bring forward and actualized, such as materials, coatings, chemistry medicament, technics manage ect. Hence, the average corrosion velocity was controlled below 0.076mm/a, the spot corrosion velocity was controlled below 0.61mm/a, which attained the assess index. Finally, the cathode protect system of Hulunber 301 section were testing and optimized, the protect voltage below -0.85V, which achieved the protect voltage.