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Role of heat stable amine salts on corrosion and corrosion inhibition in amine treating units.

机译：热稳定胺盐在胺处理单元中对腐蚀和缓蚀的作用。

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摘要

Recently, there has been a growing concern over the adverse impacts of heat stable amine salts (non-regenerable degradation products of amines) on the corrosion of process equipment in amine treating units, which remove acid gases (CO2 and H2S).;This study investigated the effect of 14 heat stable amine salt compounds on the corrosion on both CS-1018 and SS-304. Based on the results, heat stable amine salts did not alter the active state of the test metals, but it did have an apparent impact on corrosion in two ways. First, the heat stable salts, including oxalate, formate, malonate, glycolate, succinate, acetate, sulphate and chloride (as HCl) induced an increased uniform corrosion. Oxalate was the most corrosive, followed by formate and malonate. Higher salt concentration generally increased the corrosion rate. Second, the heat stable salts, including sulfite, chloride (as NaCl), two thiosulfate compounds and two thiocyanate compounds, retarded the rate of uniform corrosion.;This study also investigated the effect of heat stable amine salt on the performance of sodium metavanadate (NaVO3) and copper carbonate (CUCO3). Both NaVO3 and CUCO3 suppressed corrosion by forming stable passive films. The NaVO3, with above 96% inhibition efficiency and no pitting tendency, yielded superior performance over the CuCO3 that achieved between 81--93% and had some pitting tendency. (Abstract shortened by UMI.)
机译：最近，人们越来越关注热稳定胺盐（胺的不可再生降解产物）对胺处理装置中工艺设备腐蚀的不利影响，这些设备可去除酸性气体（CO2和H2S）。研究了14种热稳定胺盐化合物对CS-1018和SS-304腐蚀的影响。根据结果​​，热稳定的胺盐不会改变测试金属的活性状态，但确实会从两种方面对腐蚀产生明显影响。首先，热稳定的盐，包括草酸盐，甲酸盐，丙二酸盐，乙醇酸盐，琥珀酸盐，乙酸盐，硫酸盐和氯化物（如HCl）引起均匀腐蚀的增加。草酸盐腐蚀性最高，其次是甲酸盐和丙二酸盐。较高的盐浓度通常会提高腐蚀速率。其次，包括亚硫酸盐，氯化物（如NaCl），两种硫代硫酸盐化合物和两种硫氰酸盐化合物在内的热稳定盐阻碍了均匀腐蚀的速率。 NaVO3）和碳酸铜（CUCO3）。 NaVO3和CUCO3均通过形成稳定的钝化膜来抑制腐蚀。 NaVO3的抑制效率高于96％，无点蚀趋势，其性能优于CuCO3，后者达到81--93％之间并具有点蚀趋势。 （摘要由UMI缩短。）

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  • 作者

    Tanthapanichakoon, Winyu.;

  • 作者单位

    The University of Regina (Canada).;

  • 授予单位 The University of Regina (Canada).;
  • 学科 Engineering Chemical.;Engineering Civil.
  • 学位 M.A.Sc.
  • 年度 2003
  • 页码 188 p.
  • 总页数 188
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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