碳钢和不锈钢在高温环烷酸介质中的腐蚀行为

中国腐蚀与防护学报

2009, Vol. 29

Issue (6): 481-486

研究报告

本期目录 | 过刊浏览

碳钢和不锈钢在高温环烷酸介质中的腐蚀行为

余建飞^1;2;甘复兴^2;3;郝龙³;陈志量²

1.湖北省电力试验研究院武汉 430077
2.武汉大学资源与环境科学学院武汉 430079
3.中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳

HIGH TEMPERATURE NAPHTHENIC ACID CORROSION OF STEEL IN HIGH TAN REFINING MEDIA

YU Jianfei^1;2; GAN Fuxing^2;3; HAO Long³; CHEN Zhiliang²

1. Hubei Electric Power Testing & Research Institute; Wuhan 430077
2. School of Resource and Environmental Science; Wuhan University; Wuhan 430079
3. State Key Laboratory for Corrosion and Protection; Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110016

全文: PDF(2140 KB)

摘要:

采用失重法和表面分析研究了碳钢和不锈钢在高温环烷酸油介质中的腐蚀行为规律。结果表明：酸值和温度是影响金属环烷酸腐蚀行为的主要因素，其反应动力学遵循Arrhenius公式。腐蚀速度随着温度的上升而增加，同一温度下酸值影响气相腐蚀速度与液相腐蚀速度之间的关系。腐蚀速度与酸值的平方根成线性关系。随着腐蚀时间的增加，腐蚀速度迅速降低，最后趋于稳定的腐蚀速度。

关键词 ：环烷酸, 腐蚀, 碳钢, 不锈钢, 原油

Abstract：

Corrosion behavior of carbon steel and stainless steel in white oil withm naphthenic acid were studied under high temperature by mass loss method and surface analysis. Naphthenic acid corrosion (NAC) rates were directly related to experimental temperature and total acid number (TAN). The activation energy was calculated and the process kinetics could be represented by Arrhenius-type equation. The relationship between the isothermal line in liquid phase and that in vapor phase at different TAN values had a significant distinction with the change of temperature. The relationship between corrosion rate and square root of TAN is linear. The corrosion rate decreased sharply with the increase of exposure time from 1.5 h to 12 h, and then remained comparative steady state after 12 h. The findings have important implications for assessing the corrosivity of crude oils with high TAN value from various resources.

Key words： naphthenic acid corrosion carbon steel stainless steel oil

收稿日期: 2008-07-23

ZTFLH:

TG174.4

通讯作者: 甘复兴 E-mail: fxgan@163.com

Corresponding author: GAN Fuxing E-mail: fxgan@163.com

作者简介: 余建飞，女，1974年生，博士，研究方向为材料腐蚀与防护

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引用本文:

余建飞甘复兴郝龙陈志量. 碳钢和不锈钢在高温环烷酸介质中的腐蚀行为[J]. 中国腐蚀与防护学报, 2009, 29(6): 481-486.
YU Jian-Fei. HIGH TEMPERATURE NAPHTHENIC ACID CORROSION OF STEEL IN HIGH TAN REFINING MEDIA. J Chin Soc Corr Pro, 2009, 29(6): 481-486.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2009/V29/I6/481

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