Scaling Analysis and Preventive Measures of Limestone-Gypsum Wet Flue Gas Desulfurization

Wending LI; Huihua GAO; Wenfeng CAI

doi:10.12096/j.2096-4528.pgt.18069

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Scaling Analysis and Preventive Measures of Limestone-Gypsum Wet Flue Gas Desulfurization

Power Generation and Environmental Protection | 更新时间：2025-06-06

- Scaling Analysis and Preventive Measures of Limestone-Gypsum Wet Flue Gas Desulfurization
- Power Generation Technology Vol. 40, Issue 1, Pages: 51-55(2019)
- 作者机构：
  
  1.华电电力科学研究院有限公司, 湖北省武汉市 430062
  2.华电渠东发电有限公司, 河南省新乡市 453700
- 作者简介：
- 基金信息：
- DOI：10.12096/j.2096-4528.pgt.18069
  CLC：
- Received：09 October 2018，
  
  Published：26 February 2019
- 稿件说明：
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Wending LI, Huihua GAO, Wenfeng CAI. Scaling Analysis and Preventive Measures of Limestone-Gypsum Wet Flue Gas Desulfurization[J]. Power Generation Technology, 2019, 40(1): 51-55.
DOI：

Wending LI, Huihua GAO, Wenfeng CAI. Scaling Analysis and Preventive Measures of Limestone-Gypsum Wet Flue Gas Desulfurization[J]. Power Generation Technology, 2019, 40(1): 51-55. DOI： 10.12096/j.2096-4528.pgt.18069.

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.

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references

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