发电厂脱硫系统氯离子在线监测技术研究及应用  

Research and application of on-line monitoring technology for chloride in desulfurization system of power plant

作　　者：钟杰 刘玮[1] 龙国军[1] 吴磊[2] 熊卫军 刘海龙 ZHONG Jie;LIU Wei;LONG Guojun;WU Lei;XIONG Weijun;LIU Hailong(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Huaneng Wuhan Power Generation Co.,Ltd.,Wuhan 430415,China;Huazhong Branch,China Huaneng Group Co.,Ltd.,Wuhan 430077,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]华能武汉发电有限责任公司,湖北武汉430415 [3]中国华能集团有限公司华中分公司,湖北武汉430077

出　　处：《热力发电》2024年第2期170-176,共7页Thermal Power Generation

基　　金：西安热工研究院有限公司研究开发基金项目(TK-22-TYK08)。

摘　　要：氯离子是发电厂脱硫系统的关键运行指标,快速准确监测脱硫浆液氯离子对脱硫设备防腐、运行工艺优化调整、脱硫废水排放及节水均具有重要意义。通过样品预处理的方法研发出了一种高效复合介质滤芯,及适用于脱硫系统样品预处理的方法,并进行了实验室实验;对脱硫系统氯离子在线测量方法原理进行研究,研制出了一种固态聚合膜氯离子选择性电极,研究出了一种发电厂脱硫系统氯离子在线监测技术,并进行了实验室准确性实验以及现场工业应用试验。结果表明:该脱硫系统氯离子在线监测技术能够实现脱硫浆液中氯离子的连续准确在线监测,大大减少了工作量,提高氯离子测量准确性,对实现脱硫系统设备的经济、智能化运行具有重要意义。Chloride ion is the key operating index in desulfurization system of power plants.Rapid and accurate monitoring of chloride ion content in desulfurization slurry is of great significance for anti-corrosion of desulfurization equipment,optimization and adjustment of operation process,as well as desulfurization waste water discharge and water saving.By studying the pretreatment method of sample,a high-efficiency composite medium filter is developed,and the method suitable for the desulfurization system sample pretreatment is studied,and the laboratory test is carried out.At the same time,by studying the principle of online measurement method of chloride ion in desulfurization system,a solid polymer membrane chloride selective electrode is developed,and on-line monitoring technology of chloride ion in desulfurization system of power plant is developed,and the accuracy test in laboratory and field industrial application test are carried out.The results show that,the technology can realize continuous and accurate online monitoring of chloride ion content in desulfurization slurry,reduce the workload of laboratory personnel greatly,and improve the accuracy of chloride ion measurement.It is of great significance to realize the economic and intelligent operation of desulfurization system equipment.

关 键 词：脱硫系统 脱硫浆液 氯离子 在线监测 样品预处理 

分 类 号：X773[环境科学与工程—环境工程]