杨夏琼,陈朝轶,李军旗,权变利.硫对钢材碱性腐蚀的研究综述[J].表面技术,2015,44(9):89-95.
YANG Xia-qiong,CHEN Chao-yi,LI Jun-qi,QUAN Bian-li.Review on Sulfur Corrosion of Steel in Alkaline Environment[J].Surface Technology,2015,44(9):89-95 |
| 硫对钢材碱性腐蚀的研究综述 |
| Review on Sulfur Corrosion of Steel in Alkaline Environment |
| 投稿时间：2015-05-22 修订日期：2015-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2015.09.015 |
| 中文关键词: 硫腐蚀 钢材 氧化铝生产 碱性腐蚀 高硫铝土矿 铝酸钠溶液 |
| 英文关键词:sulfur corrosion steel alumina production alkaline corrosion high-sulfur bauxite sodium aluminate solution |
| 基金项目:国家自然科学基金(51264006, 51474079, 51464008,51574095);贵州省教育厅项目(黔教合重大专项字(2012)0002);贵州省校合作项目(LH[2014]7609) |
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| Author | Institution |
| YANG Xia-qiong | 1. School of Material and Metallurgy, Guizhou University, Guiyang 550025, China;2. Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guiyang 550025, China |
| CHEN Chao-yi | 1. School of Material and Metallurgy, Guizhou University, Guiyang 550025, China;2. Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guiyang 550025, China |
| LI Jun-qi | 1. School of Material and Metallurgy, Guizhou University, Guiyang 550025, China;2. Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guiyang 550025, China |
| QUAN Bian-li | 1. School of Material and Metallurgy, Guizhou University, Guiyang 550025, China;2. Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guiyang 550025, China |
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| 中文摘要: |
| 硫对钢材的腐蚀是石油化工行业、造纸工业及氧化铝生产行业面临的一个普遍问题。 研究表明,纯氢氧化钠溶液中 S2-质量浓度达到 5 g/ L 时,3. 5 mm 厚的 CT20 碳钢的腐蚀寿命只有 6 h,且 16Mn钢在含有 5 g/ L 的 S2-的铝酸钠溶液中腐蚀速率高达 151. 21 mm/ a。 综述了碱性条件下 S2-,S2O2 3-,SO2 3-和 SO2 4- 等 4 种形态的硫对钢材腐蚀的研究现状,重点阐述了苛碱条件下 S2-对钢材腐蚀的研究进展。 拜耳法是高硫铝土矿生产氧化铝的常用方法,在生产过程中,硫以 S2-,S2O2 3- 和少量 SO2 3-,SO2 4- 的形态转入铝酸钠溶液,给生产设备带来严重的腐蚀危害。 目前,铝酸钠溶液中硫对钢材腐蚀的研究报道较少,尤其是各种形态的硫在铝酸钠溶液中同时存在时对设备材质具有耦合腐蚀效应:当向 5 g/ L S2-的铝酸钠溶液中加入 5 g/ L 的 S2O2 3- 时,16Mn 钢的腐蚀速率由 151. 21 mm/ a 迅速下降至 8. 66 mm/ a。 最后,对耦合腐蚀机理的研究进行了展望。 |
| 英文摘要: |
| Sulfur corrosion of steel is a universal problem in petroleum chemistry industry, paper and pulp industry, and alumina production industry. It has been proved by studies that the corrosion life of 3. 5 mm thick CT20 carbon steel was only 6 hours when it was in sodium hydroxide solution with 5 g / L S2-, and the corrosion rate of 16Mn steel was as high as 151. 21 mm / y when it was in sodium aluminate solution with 5 g / L S2-. The current research status of 4 forms of sulfur (S2-, S2 O2 3-, SO2 3-, SO2 4-) corrosion of steel in alkaline solution was reviewed in this paper, and the research progress of S2- corrosion of steel in alkali conditions was discussed particularly. Bayer process is the common method of alumina production with high-sulfur bauxite, during the progress, sulfur is transformed into sodium aluminate solution in the forms of S2-, S2 O2 3- and smaller amounts of SO2 3-, SO2 4-, leading to serious corrosion of the production equipment. At present, sulfur corrosion of steel in sodium aluminate solution is seldom reported, especially the coupled corrosive effects of different forms sulfur on equipment material when they coexist in sodium aluminate solution: the corrosion rate of 16Mn steel was dramatically reduced to 8. 66 mm / a from 151. 21 mm / a when 5 g / L S2 O2 3- was added into sodium aluminate solution with 5 g / L S2-. Finally, study on the mechanism of coupled corrosion was prospected. |
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