为了减缓或抑制脱硫装置中碳钢的H2S应力腐蚀开裂,通过挂片试验和极化曲线测试筛选出了N-甲基二乙醇胺(MDEA)、单油咪唑啉两种缓蚀剂,对减缓腐蚀和抑制氢鼓泡的效果都很好.还通过恒应变速率拉伸试验分别对它们在饱和H2S水溶液中的缓蚀效果进行定量评价,结果表明,这两种缓蚀剂的加入,都能够很大程度地降低碳钢应力腐蚀的敏感性.

To restrain the sulfide stress corrosion cracking of carbon steel in desulfurization unit,imidazoline and methyldiethanolamine(MDEA) were selected as inhibitors by weight-loess tests and polarization curve measurements.These two inhibitors have made good effects to restrain corrosion and hydrogen blistering,And tensile tests were used to evaluate the performance of the two corrosion inhibitors in H2S saturated water.The results show that the two inhibitors can all decrease the susceptibility to stress corrosion cracking greatly.