天然气集输倾斜管道腐蚀行为及缓蚀剂分布研究

侯晓犇, 刘宁, 扈俊颖

Corrosion Behavior and Distribution of Corrosion Inhibitors in Inclined Section for Natural Gas Gathering and Transportation Pipelines

HOU Xiaoben, LIU Ning, HU Junying

表2 30°倾斜管道内1~7号电极电化学阻抗谱的拟合结果

Table 2 Fitting results of EIS of the electrodes No.1-7 in 30 inclined pipeline

Electrode Rs / Ω·cm2 CPE1 Rf / Ω·cm2 CPE2 Rct / Ω·cm2 Y0 / 10-4 Ω-1·s-n ·cm-2 n Y0 / 10-4 Ω-1·s-n ·cm-2 n 1 5.38 0.15 1 1.03 3.01 0.73 533.8 2 5.25 4.97 0.64 4.06 0.31 0.94 288.6 3 6.22 0.64 1 19.01 3.21 0.75 129.2 4 2.95 2.39 0.43 2.84 2.13 0.81 741.1 5 5.25 3.44 0.61 34.77 0.28 0.90 1024 6 5.48 3.10 0.76 10.36 0.18 0.97 454.8 7 5.65 3.38 0.80 3.25 1.47 0.86 314.4