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通过调查大型原油储罐底板沉积水腐蚀物成分、土壤电阻率等,分析储罐腐蚀原因,提出涂料防腐、阴极保护联合防护对策,采用一种新型阴极保护方法,并对防腐效果进行检验。结果表明,采用新型智能同步恒断电位仪防腐措施的储罐阴极保护效果显著,有效降低了储罐底板腐蚀速率,减少了维护成本。 相似文献
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通过对原油储罐底板腐蚀原因的分析,提出涂层加阴极保护联合防护是解决原油储罐底板腐蚀问题最合理的措施. 相似文献
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以固体电解质涂层为导电层,石墨导电涂料为阳极涂层,石墨为参比电极,进行原油储罐底板外侧的气相阴极保护。通过实验确定了固体电解质、导电涂料的配方,测定了Q235钢在涂层中的自腐蚀电位、最小保护电位和最小保护电流密度等电化学参数。 相似文献
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姜鹏 《中国石油和化工标准与质量》2012,32(7):49
随着我国大型商业储备油库的建立,钢制原油储罐数量逐渐增多,综合数据显示储罐底板腐蚀最为严重,如何减缓腐蚀速度,延长使用寿命,成为现阶段迫切需要解决的问题。本文综合原油储罐底板在运行中遭受的腐蚀情况,对其腐蚀机理进行分析,找出其主要腐蚀因素,并依据现有成熟技术,提出了一些行之有效的防腐技术措施,以达到腐蚀控制的目的。 相似文献
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钢制原油储罐的腐蚀与综合防护 总被引:1,自引:0,他引:1
论述了钢制原油储罐腐蚀的基本情况,分析了引起腐蚀的主要原因,给出了腐蚀机理,提出了涂料和阴极保护联合防护的概念,重点介绍了锦州石油化工公司20000m3原油储罐中涂料的选择原则和长效综合防护对策以及它的应用情况。 相似文献
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详细论述了原油储罐腐蚀的基本情况,分析了引起腐蚀的主要,人出了腐蚀机理,提出了涂料和阴极保护联合防护的概念,并重点介绍了锦州石油化工公司2000m^3原油储罐中涂料的选择原则和长效综合防护对策以及它的应用情况。 相似文献
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《中国石油和化工标准与质量》2014,(4)
在油品管理中,有效地对原油储罐罐底板进行保护具有重要意义。本文在对原油储罐罐底板腐蚀原因进行分析的基础上,针对性提出了相关的防护对策,以期为相关领域研究提供建设性思路。 相似文献
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针对中国石油大连石化公司874#罐泄漏情况,对该罐的腐蚀状况进行外观检查和腐蚀检测,从而对罐底泄漏的原因进行分析,提出相应的维修方案和防护措施。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(10):879-908
The current crude oil tanker is constructed as a double-hull structure which consists of an oil tank and a water ballast tank whose surface is coated with epoxy paint to prevent corrosion. Since the cracks that developed in the epoxy coating have caused corrosion of the interface of the water ballast tank, the identification of the parameters for crack development is important. In addition, the moisture absorption by the epoxy coating can cause deterioration of bond strength, which results in delamination of the coating and accelerates the corrosion at the interface. In this study, after the mechanical and thermo-mechanical properties of epoxy paints were measured, the residual stresses induced by the temperature change and cure shrinkage were calculated by the finite element analysis, which were compared with the experimental results. Also, the pull-off tests were performed to investigate the deterioration of the bond strength of epoxy coatings due to moisture absorption. It was found that the thermo-mechanical properties such as the coefficient of thermal expansion and glass transition temperature of the coating materials had dominant effects on the crack resistance rather than the cure shrinkage; the moisture penetration to the bonding interface caused interfacial failure and a significant deterioration of bond strength. 相似文献
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