石灰石–石膏湿法脱硫吸收塔结垢分析及预防措施
摘要：结垢是影响石灰石-石膏湿法脱硫（wet flue gas desulfurization，WFGD）系统安全稳定运行的主要问题之一。某发电公司330 MW机组烟气脱硫一级塔及除雾器结垢情况严重，已影响脱硫系统的正常运行。针对该问题，对吸收塔及脱硫系统运行参数进行了系统分析，发现脉冲悬浮系统故障、除雾器喷嘴堵塞、浆液参数波动是造成吸收塔结垢的主要原因。通过加强对除雾器的冲洗、密切监视对比除雾器和浆液脉冲泵启动初期及正常运行中的参数、合理控制脱硫一级塔浆液密度、pH值、氧化风量及氟离子浓度等，吸收塔结垢问题已得到有效缓解。
Abstract:Scaling is one of the main problems affecting the safe and stable operation of limestone gypsum wet flue gas desulfurization (WFGD) system. In a power plant, the scaling of the primary tower and the mist eliminator of 330MW unit was serious, which had affected the normal operation of the flue gas desulfurization system. For this problem, the paper systematically analyzed the absorber and the operation parameters of the desulfurization system. It was found that the fault of the pulse suspension system, the blockage of the mist eliminator nozzle and the fluctuation of the slurry parameters were the main causes of the scaling in the absorber. By strengthening the flushing of the mist eliminator, monitoring and comparing the parameters of the mist eliminator and the slurry pulse pump at the beginning and normal operation, reasonably controlling the slurry density, pH value, oxidation air volume and fluoride ion concentration, the scaling of the primary tower had been effectively alleviated.
标题：石灰石–石膏湿法脱硫吸收塔结垢分析及预防措施
title:Scaling Analysis and Preventive Measures of Limestone-Gypsum Wet Flue Gas Desulfurization
作者：李文鼎,高惠华,蔡文丰
authors:Wending LI,Huihua GAO,Wenfeng CAI
