超超临界机组高压缸积盐分析及控制方式探讨  

Analysis and Control Method of Ultra-Supercritical Unit High Pressure Cylinder Salt Deposit

作　　者：栾义 万金录 侯明晖 LUAN Yi;WAN Jinlu;HOU Minghui(Safety Production Department,Jiangsu Guoxin Investment Group Co.,Ltd.,Nanjing,Jiangsu Province,210005 China;Jiangsu Sheyang Power Generation Co.,Ltd.,Yancheng,Jiangsu Province,224300 China;Xi'an Yitong Heat Engineering Technology Service Co.,Ltd.,Xi'an,Shaanxi Province,710032 China)

机构地区：[1]江苏国信集团能源部安全生产部,江苏南京210005 [2]江苏射阳港发电有限责任公司,江苏盐城224300 [3]西安益通热工技术服务有限责任公司,陕西西安710032

出　　处：《科技创新导报》2020年第28期77-79,共3页Science and Technology Innovation Herald

摘　　要：通过研究某660MW超超临界机组A修化学静态诊断中发现的高压缸末级叶片积盐问题,分析确定了汽轮机高压缸积盐的原因。结合实际情况,提出了通过加氧减缓汽水系统流动加速腐蚀;改用活性胺保养减缓机组停备用腐蚀;提高化学仪表准确性,优化水质控制;加强机组启动期间的水质控制等一系列优化方案,为后续同类机组化学运行、监督提供建议,减缓汽轮机高压缸积盐问题。By studying the salt accumulation on the blade at the end of the high-pressure cylinder found in the chemical static diagnosis of A 660MW ultra-supercritical unit,the causes of salt accumulation on the high-pressure cylinder of the steam turbine were analyzed and determined.Based on the actual situation,it is proposed to slow down the flow accelerated corrosion of soda water system by adding oxygen.Use active amine maintenance to slow down the standby corrosion of the unit;Improve the accuracy of chemical instruments and optimize water quality control;A series of optimization schemes,such as strengthening water quality control during the start-up of the unit,are proposed for the subsequent chemical operation and supervision of similar units to alleviate the problem of salt accumulation in high-pressure cylinders of steam turbines.

关 键 词：超超临界 高压缸积盐 加氧处理 化学仪表 停用保护 

分 类 号：TM621[电气工程—电力系统及自动化]