加氢装置脱H2S汽提塔塔顶系统的腐蚀评价及选材
Corrosion Evaluation and Material Selection of the Overhead System of H2S Stripping Tower in Hydrogenation Unit
摘 要
模拟脱H2S汽提塔塔顶系统现场工况，采用浸泡腐蚀挂片、恒电位阳极极化法、U型弯曲应力腐蚀等方法对20号钢、304L、321、316L及2205不锈钢在湿硫化氢环境中的均匀腐蚀、点蚀和应力腐蚀开裂敏感性进行了研究，并利用体视显微镜和SEM对金属试样的微观腐蚀形貌进行了观察。结果表明：20号钢耐蚀性较差，易在低温下发生氢鼓泡，奥氏体不锈钢304L、321、316L及双相不锈钢2205的腐蚀速率较小，耐蚀性好，其中304L和321不锈钢耐点蚀性能稍差，表面出现了轻微点蚀造成的蜂窝状的局部腐蚀；H2S的存在明显提高了奥氏体不锈钢在Cl-环境中的点蚀敏感性；304L、321及316L不锈钢焊接试样均具有较好的耐应力腐蚀开裂性能。
塔顶系统
硫化氢腐蚀
点蚀
H2S stripping tower
overhead system
H2S corrosion
pitting
Abstract
The operating condition of H2S stripping tower was simulation, the general corrosion, pitting corrosion and stress corrosion cracking sensitivity of 20#, 304L, 321 and 316L in wet H2S environment were evaluated by immersion corrosion test, potentiostatic anodic polarization method and U-bent specimen test. The results showed that the corrosion resistance of 20# steel was poor, and hydrogen blistering was easy to occure at low temperature. 304L, 321, 316L austenitic stainless steels and 2205 duplex steel had a low corrosion rate and much better corrosion resistance. The pitting resistance of 304L and 321 stainless steels was a bit poor compared with 316L and 2205 steels, and honeycomb localized corrosion caused by slight pitting appeared. The existence of H2S observably enhanced the pitting sensitivity of austenitic stainless steels in the environment containing Cl-. The welding samples of 304L, 321 and 316L stainless steels had a good resistance to stress corrosion cracking.
中图分类号 TG172 DOI 10.11973/fsyfh-201801014
所属栏目 应用技术
基金项目 中石化科研项目（308057）
收稿日期 2016/4/27
修改稿日期
网络出版日期
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引用该论文: ZHAO Xiaoyan,CHEN Chonggang,YU Fengchang,CUI Xinan,LI Chaofa. Corrosion Evaluation and Material Selection of the Overhead System of H2S Stripping Tower in Hydrogenation Unit[J]. Corrosion & Protection, 2018, 39(1): 63
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参考文献
【1】张海涛. 加氢装置设备腐蚀分析与安全防护[J]. 石油化工安全环保技术,2007,33(2):29-35.
【2】左超,段玉科,王健平,等. 柴油加氢装置的低温湿硫化氢腐蚀与防护[J]. 石油化工腐蚀与防护,2007,24(1):61-63.
【3】姚连仲,张树萍. 加氢裂化装置冷却器(E-204)腐蚀泄露原因分析[J]. 石油化工设备技术,2006,27(4):50-52.
【4】张传周. 4种硫化氢汽提塔顶材料耐腐蚀性能分析[J]. 河南化工,2010,27(10):66-67.
【5】孙昱. 蜡油加氢装置硫化氢汽提塔的腐蚀与防护[J]. 石油化工腐蚀与防护,2013,30(2):10-13.
【6】程豪奇,王秋灵,裴季红. 脱硫化氢汽提塔塔顶腐蚀原因分析与对策[J]. 石油化工环境保护,2006,29(3):52-56.
【7】VELOZ M A,GONZALEZ I. Electrochemical study of carbon steel corrosion in buffered acetic acid solutions with chlorides and H2S[J]. Electrochimica Acta,2002,48(2):135-144.
【8】ZHENG S Q,QI Y M,CHEN C F,et al. Effect of hydrogen and inclusions on the tensile properties and fracture behavior of A350LF2 steels after exposure to wet H2S environments[J]. Corrosion Science,2012(60):59-68.
【9】赵小燕,刘希武,苗普,等. X52钢在模拟高酸性气田环境中的腐蚀行为[J]. 腐蚀与防护,2015,36(12):1166-1189.
【10】刘烈炜,胡倩,郭沨,等. 硫化氢对不锈钢在酸性体系中腐蚀行为影响的研究[J]. 腐蚀与防护,2002,23(1):10-14.
【11】范强强. 316L奥氏体不锈钢的腐蚀行为[J]. 金属腐蚀控制,2013,27(11):39-43.
【12】CASE R P,RINCON H E,MCLNTYRE D R. Anlysis of pit stability in type 316L stainless steel exposed to H2S-saturated dilute chloride solutions above the critical pitting temperature[J]. Corrosion,2012,68(3):1-12.
【13】HE W,KNUDSEN O,DIPLAS S. Corrosion of stainless steel 316L in simulated formation water environment with CO2-H2S-Cl-[J]. Corrosion Science,2009,51:2811-2819.
【14】薛俊鹏,于勇,张雷,等. H2S对316L不锈钢含Cl-环境下点蚀行为的影响[J]. 腐蚀与防护,2012,33(2):106-109.
【2】左超,段玉科,王健平,等. 柴油加氢装置的低温湿硫化氢腐蚀与防护[J]. 石油化工腐蚀与防护,2007,24(1):61-63.
【3】姚连仲,张树萍. 加氢裂化装置冷却器(E-204)腐蚀泄露原因分析[J]. 石油化工设备技术,2006,27(4):50-52.
【4】张传周. 4种硫化氢汽提塔顶材料耐腐蚀性能分析[J]. 河南化工,2010,27(10):66-67.
【5】孙昱. 蜡油加氢装置硫化氢汽提塔的腐蚀与防护[J]. 石油化工腐蚀与防护,2013,30(2):10-13.
【6】程豪奇,王秋灵,裴季红. 脱硫化氢汽提塔塔顶腐蚀原因分析与对策[J]. 石油化工环境保护,2006,29(3):52-56.
【7】VELOZ M A,GONZALEZ I. Electrochemical study of carbon steel corrosion in buffered acetic acid solutions with chlorides and H2S[J]. Electrochimica Acta,2002,48(2):135-144.
【8】ZHENG S Q,QI Y M,CHEN C F,et al. Effect of hydrogen and inclusions on the tensile properties and fracture behavior of A350LF2 steels after exposure to wet H2S environments[J]. Corrosion Science,2012(60):59-68.
【9】赵小燕,刘希武,苗普,等. X52钢在模拟高酸性气田环境中的腐蚀行为[J]. 腐蚀与防护,2015,36(12):1166-1189.
【10】刘烈炜,胡倩,郭沨,等. 硫化氢对不锈钢在酸性体系中腐蚀行为影响的研究[J]. 腐蚀与防护,2002,23(1):10-14.
【11】范强强. 316L奥氏体不锈钢的腐蚀行为[J]. 金属腐蚀控制,2013,27(11):39-43.
【12】CASE R P,RINCON H E,MCLNTYRE D R. Anlysis of pit stability in type 316L stainless steel exposed to H2S-saturated dilute chloride solutions above the critical pitting temperature[J]. Corrosion,2012,68(3):1-12.
【13】HE W,KNUDSEN O,DIPLAS S. Corrosion of stainless steel 316L in simulated formation water environment with CO2-H2S-Cl-[J]. Corrosion Science,2009,51:2811-2819.
【14】薛俊鹏,于勇,张雷,等. H2S对316L不锈钢含Cl-环境下点蚀行为的影响[J]. 腐蚀与防护,2012,33(2):106-109.
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