某350 MW供热机组水汽氢电导率异常原因查定及处理  

Cause Analysis and Treatment of Abnormal Hydrogen Conductivity in a 350 MW Heat Supply Unit

作　　者：刘杨惠珍 LIUYANG Huizhen(China Datang Corporation Science and Technology Company Limited,Central South Electric Power Test Research Institute,Zhengzhou Henan 450000)

机构地区：[1]中国大唐集团科学技术研究院有限公司中南电力试验研究院,河南郑州450000

出　　处：《河南科技》2021年第27期72-74,共3页Henan Science and Technology

摘　　要：针对某电厂运行过程中出现的水汽氢电导率异常情况,通过仪器仪表联用,分析水汽脱气氢电导率、痕量阴离子和TOC含量的变化,快速查定出是有机物进入机组热力系统,在高温、高压介质中分解成甲酸乙酸,造成氢电导率超标,并且查找到异常原因是超滤保护液甘油回收至锅炉补给水处理系统所致,最终查定和处理了由此引起的热力系统水汽质量劣化问题。In view of the abnormal water vapor hydrogen conductivity during the operation of a power plant,the technicians analyzed the changes of water vapor degassed hydrogen conductivity,trace anions and TOC content through the combination of instruments and meters,and quickly identified that organic matter entered the thermal system,then they resolved into formic acid and acetic acid in high temperature and high-pressure medium,resulting in the excessive hydrogen conductivity.In addition,it is found that the glycerin protection liquid of UF was recovered to the boiler make-up water treatment system,resulting in the excessive organic content of demineralized water,and finally the deterioration of steam quality caused by the thermal system was determined and disposed.

关 键 词：水汽质量 脱气氢电导率 有机物 

分 类 号：TM621[电气工程—电力系统及自动化]