安全、健康和环境2025，Vol.25Issue(10)：47-53,7.DOI:10.3969/j.issn.1672-7932.2025.10.006
循环水胺液泄漏在线监测技术及应用
Technology and Application of Amine Solvent Online Monitoring in Circulating Water
摘要
Abstract
In petrochemical plants,amine solution water coolers are widely used in process units that re-quire acid gas removal.However,the early detection of minor leaks has long been a technical challenge for en-terprises.This paper proposes an online monitoring technology for leakage in amine solution water coolers.Based on ion chromatography,an online leakage monitoring system for N-methyldiethanolamine(MDEA)in cir-culating water was developed and validated through field application.Using an amine-specific chromatographic column with methanesulfonic acid as the eluent,the peak area was directly proportional to the MDEA mass con-centration across ranges of 3～50 mg/L and 5～200 mg/L,with a correlation coefficient of 0.999.The detection limit was 1.6 mg/L,and the recovery rate after standard addition was 86.9%to 93.6%.The detection cycle was less than 15 minutes.This system features simple operation,low detection limits,and excellent precision and accuracy.It is suitable for the online monitoring of amine solution leakage in the circulating water of amine desulfurization devices and can meet the online monitoring requirements of amine liquid water cooler leakage in amine desulfurization purification devices.It can provide an effective guarantee for the long-term safe and stable operation of the device.关键词
离子色谱法/循环水/N-甲基二乙醇胺/在线监测/胺液水冷器Key words
ion chromatography/circulating water/N-methyldiethanolamine/online monitoring/amine so-lution water coolers分类
化学引用本文复制引用
肖寒,魏新明,肖安山..循环水胺液泄漏在线监测技术及应用[J].安全、健康和环境,2025,25(10):47-53,7.基金项目
中国石化科技部项目(318023-12),高含硫天然气净化装置换热设备安全高效长周期运行技术研究 （318023-12）
中国石化炼油事业部项目(CLY23057),炼油装置循环水物料泄漏在线监测装备与应用. （CLY23057）
