大型原油储罐底板腐蚀规律及基于风险的检修技术研究

IF 0.8 Q4 ELECTROCHEMISTRY Corrosion Science and Technology-Korea Pub Date : 2020-04-30 DOI:10.14773/CST.2020.19.2.66
Fangwei Luo, R. Ran, Lei Wang
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引用次数: 6

摘要

本文作者团队对俄罗斯和大庆原油在特定底层水环境下大型储罐常用Q235钢的腐蚀特性进行了对比实验研究。研究发现,根据底层水的种类,储罐底板存在一定程度的均匀或局部腐蚀。大庆原油的底水腐蚀是由二氧化碳引起的均匀腐蚀。俄罗斯原油底水腐蚀明显是由二氧化碳和硫化氢共同腐蚀引起的局部腐蚀,这里的腐蚀速率明显高于大庆原油。目前,中国炼油和化工企业采用两种储罐检查和维护模式:定期检查模式和API581-2016基于风险的检测模式。这些模式已被有效地结合起来,形成了一种智能化的储罐检查和维护模式,并开发了支持这种智能检查和维护管理的软件工具。
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Study on Corrosion Law of Large Crude Oil Storage Tank Floor and Risk-Based Inspection and Maintenance Technology
In this paper, the author''s team has carried out a comparative experimental study on the corrosion characteristics of Q235 steel commonly used in large-scale storage tanks under the specific bottom water environment found with Russian and Daqing crude oil. It was found that there is a certain degree of uniform or local corrosion on the tank floor depending on the kind of bottom water. The bottom water corrosion of Daqing crude oil is a uniform corrosion caused by carbon dioxide. While the Russian crude oil bottom water corrosion is clearly local corrosion caused by co-corrosion of carbon dioxide and hydrogen sulfide, here the corrosion rate is obviously higher than that caused by Daqing crude oil. There are two modes of storage tank inspection and maintenance that have been currently adopted by Chinese refining and chemical enterprises: a regular inspection mode and a API581-2016 risk-based detection mode. These modes have been effectively combined to form an intelligent tank inspection and maintenance mode, software tools to support this intelligent inspection and maintenance management have been developed.
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来源期刊
CiteScore
1.30
自引率
66.70%
发文量
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