热电联产机组水汽系统尿素污染案例分析  

Case Study of Urea Pollution in Steam-water System of Cogeneration Units

作　　者：李海荣 LI Hairong(China Resources Science&Technology Co.,Ltd.,Zhengzhou,Henan450000,China)

机构地区：[1]润电能源科学技术有限公司,河南郑州450000

出　　处：《山西电力》2023年第3期51-55,共5页Shanxi Electric Power

摘　　要：结合某火电厂2×1000 MW热电联产机组因尿素污染水汽系统而停机的案例,介绍了尿素污染对水汽氢电导率、pH、电导率等在线监测指标的影响;应用离子色谱、总有机碳、总氮等仪器对水样进行离线检测,分析确定了污染物及其来源;对尿素穿透锅炉补给水处理系统、污染机组锅炉补给水的原因进行了分析,并提出了相应的防范措施。Based on the case of a 2x1000 MW cogeneration unit shutdown due to urea pollution of steam-water system in a thermal power plant,the influence of urea pollution on steam-water hydrogen conductivity,pH,conductivity and other on-line monitoring indexes is introduced.Ion chromatography,total organic carbon(TOC),total nitrogen and other instruments are used for off-line detection of water samples to analyze and determine pollutants and their sources.The causes of urea penetrating the boiler make-up water treatment system and polluting the boiler make-up water of the units are analyzed,and the relevant preventive measures are put forward.

关 键 词：锅炉补给水 尿素 水汽品质 总有机碳 氢电导率 

分 类 号：TM621[电气工程—电力系统及自动化]