Corrosion analysis and inhibition studies in the process of natural gas wet desulfurization

被引：12

作者：

Wang, Zhihong ^{[1
]}

Yang, Chaoyue ^{[1
]}

Zhu, Lin ^{[1
]}

机构：

[1] Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2014年 / 44卷

关键词：

Corrosion analysis; Inhibition study; Wet desulfurization; Natural gas; FAILURE ANALYSIS; BEHAVIOR; STEEL; OIL;

D O I：

10.1016/j.engfailanal.2014.04.030

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The present work investigates the corrosion on Fe-Al alloy steel in the process of the wet desulfurizing of Sichuan natural gas purification master plant. The morphology and composition of the corrosion scale are characterized by scanning electron microscopy, X-ray power diffraction and energy-dispersive spectroscopy. Results show that corrosion scale mainly consists of FeS. Electrochemical methods such as polarization curve and electrochemical impedance spectroscopy were used to analyze the effects of alcohol amine concentration and temperature on the corrosion. It can be found that the strongest corrosion occurs at the temperature of 50 degrees C and the concentration of 40% alcoholic solution. In addition, the electrochemical experiments demonstrate that the corrosion rate can be apparently reduced by adding corrosion inhibitors such as diethanol amine and triethanolamine. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：66 / 73

页数：8

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