| 碳钢在高温发烟硫酸环境中的阳极保护研究及应用 |
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| 引用本文： | 李庆华,李德超,杨根柱,王博.碳钢在高温发烟硫酸环境中的阳极保护研究及应用[J].化工机械,2011,38(4):408-412,439. |
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| 作者姓名： | 李庆华 李德超 杨根柱 王博 |
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| 作者单位： | 中石化石家庄炼化分公司 |
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| 摘 要： | 研究了碳钢在100～300℃、30％的发烟硫酸中外加电流阳极保护条件下的腐蚀行为,其在300℃条件下腐蚀率由35.0mm/a降低至1.4mm/a,并实现了阳极保护三氧化硫蒸发器的工业化应用.从试验测试结果和设备现场使用的情况得出,在“碳钢-发烟硫酸”体系实施阳极保护的致钝电流密度约为1.5A/m2；维钝电流的密度约为0...
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| 关 键 词： | 阳极保护技术 碳钢 发烟硫酸 |
Study on Anodized Carbon-steel and Its Application in Hot Fuming Sulfuric Acid Environment |
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| LI Qing-hua,LI De-chao,YANG Gen-zhu,WANG Bo.Study on Anodized Carbon-steel and Its Application in Hot Fuming Sulfuric Acid Environment[J].Chemical Engineering & Machinery,2011,38(4):408-412,439. |
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| Authors: | LI Qing-hua LI De-chao YANG Gen-zhu WANG Bo |
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| Affiliation: | LI Qing-hua,LI De-chao,YANG Gen-zhu,WANG Bo(Sinopec Shijiazhuang Refining and Chemical Corporation,Shijiazhuang 050032,China) |
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| Abstract: | The corrosion rate of anodized carbon-steel in fuming sulfuric condition which boasting of 100℃ - 300℃ temperature and 30% shell side was discussed. The experimental results show that at 300℃ , its corro-sion rate can be decreased to 1.4mm/a from 35mm/a to benefit industrialized application of anodized sulfur trioxide evaporators; and the ideal critical passive current density for anodized carbon-steel approximates 1.5 A/m^2 with 0.3A/m^2 or so for the maintaining passivity current density and about 2.6V for the optimum protection potential relative to Hg/Hg2SO4 electrode. |
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| Keywords: | anodic protection technology carbon-steel fuming sulfuric acid |
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