某电厂仪用压缩空气带水原因分析及对策  

Analysis and Countermeasures on Instrument Compressed Air with Water for a Power Plant

作　　者：聂鹏飞[1] 高志[2] 张宏宇[1] 王洋[1] 马杰[1] 张金生[1] 

机构地区：[1]河北大唐国际王滩发电有限责任公司,河北唐山063611 [2]唐山学院,河北唐山063620

出　　处：《中国电力》2012年第8期52-55,共4页Electric Power

摘　　要：某电厂脱硫系统仪用压缩空气带水严重,直接影响脱硫设备、仪表的运行和使用效果。分析其主要原因为:压缩空气中液态水含量超标,油水分离器和除油过滤器等疏水不畅,浮球式自动排水器堵塞,空气压缩机排气温度高,干燥器运行操作设置不合理等。为此,采取了一系列改进措施:(1)将储气罐后置改为前置;(2)调整干燥器运行设置,将干燥剂由活性氧化铝改为分子筛+活性氧化铝(混装);(3)改善空气压缩机房通风条件;(4)增加电子自动排水器等。改造后效果明显,压缩空气露点温度由原来的-3℃降至-35℃,压缩空气中水分减少约93%。The instrument compressed air with water was serious in a power plant,which affects the operation and effect of desulphurization equipment directly.The main reasons are analyzed,including the overproof liquid water content in the compressed air,poor drainage of oil-water separator and oil filter,blockage of floating-ball automatic drainer,high exhaust temperature of air compressor and unreasonable-set operation of dryer.Therefore,the corresponding measures for improvement are adopted.1) The gasholder is shifted forward.2) The dryer is reset with the drying agent changed from activated alumina to mixed activated alumina and molecular sieve.3) The ventilation is improved for the air compressor room.4) An electronic automatic drainer is added.After retrofit,the dew point temperature of the compressed air is decreased from-3 ℃ to-35 ℃ and the amount of water in the compressed air is reduced by about 93%.

关 键 词：电厂 脱硫系统 仪用压缩空气 水分 吸附剂 

分 类 号：TM621[电气工程—电力系统及自动化] TH41[机械工程—机械制造及自动化]