摘要
对两个系列的环保装置——酸性水汽提装置的酸性水介质、材质及富氨气系统腐蚀情况进行了分析。结果表明,Ⅱ系列酸性水中的硫化物和氨氮含量比Ⅰ系列高,富氨气分液罐在较高的pH值和存在水的情况下会形成湿硫化氢腐蚀环境,造成湿硫化氢腐蚀;而富氨气氨冷却器则是硫氢化铵腐蚀。通过管束内流速对冷却器的腐蚀速率进行了评估,并提出有效抑制腐蚀的改进措施。
The sour water media, material of construction and rich amine gas in two sour water strippers （ Train I and Train II） for environmental protection are analyzed. The results show that the sulfides, ammine and nitrogen in the sour water of Train II are higher than those of Train I. The wet hydrogen sulfide corrosion environment will form in the rich amine liquid separator at higher pH value and presence of water, which will lead to wet hydrogen sulfide corrosion. The cooler for rich amine is subject to corrosion of ammine sulfohydrate. Based upon the evaluation of flow velocity inside the tubes and corrosion rate, effective corrosion control measures have been proposed.
出处
《石油化工腐蚀与防护》
CAS
2013年第6期19-23,共5页
Corrosion & Protection In Petrochemical Industry
关键词
富氨气系统
湿硫化氢
硫氢化铵
腐蚀分析
rich -amine gas system, wet hydrogen sulfide, ammine sulfohydrate, corrosion analysis
