中国电力 ›› 2015, Vol. 48 ›› Issue (8): 33-36.DOI: 10.11930.2015.8.33

• 火电厂烟气除尘技术专栏 • 上一篇    下一篇

湿法脱硫系统除尘效果分析与提效措施

魏宏鸽,叶伟平,柴磊,朱跃   

  1. 华电电力科学研究院,浙江 杭州 310030
  • 收稿日期:2015-05-13 出版日期:2015-08-25 发布日期:2015-11-25
  • 作者简介:魏宏鸽(1986—),男,江苏南京人,工程师,从事火电厂脱硫、脱硝与除尘技术研究。E-mail: hongge-wei@chder.com

Analysis of Dust Removal Effect in Wet-FGD System and its Efficiency-Enhancement Techniques

WEI Hongge, YE Weiping, CHAI Lei, ZHU Yue   

  1. Huadian Electric Power Research Institute, Hangzhou 310030, China
  • Received:2015-05-13 Online:2015-08-25 Published:2015-11-25

摘要: 通过对湿法脱硫装置开展除尘效率试验,研究影响脱硫装置除尘效率的主要因素,研究发现,脱硫装置对高浓度粉尘洗尘效果更为明显,目前脱硫装置综合除尘效率在50%左右。同时,实际运行时脱硫装置出口雾滴含量均高出设计值,雾滴中存在的固体颗粒是导致除尘效率偏低的关键因素之一。最后,提出了脱硫改造中除尘效率的提效措施,以实现脱硫的协同除尘作用,为下一步脱硫改造提供相关思路。

关键词: 燃煤发电, 湿法脱硫装置, 协同除尘作用, 除雾器改造, 喷淋系统优化

Abstract: Through the test on dust removal efficiency of Wet-FGD, the major contributing factors are studied, in which FGD exhibits outstanding performance in dust removal under conditions of higher inlet dust concentration. Presently, the comprehensive dust removal efficiency reaches as high as about 50%. Meanwhile, under normal conditions, the mist contents in FGD’s outlet flue gas are higher than the designed value, hence the solid particles in the mist is one of the key factors which leads to the low dust removal efficiency. Therefore, several enhancement techniques are proposed to improve the dust removal efficiency of FGD system such that the collaborative dust removal can be realized in FGD system, which can also inspire new ideas for the subsequent FGD retrofit work.

Key words: coal-fired power, wet-FGD, collaborative dust removal effect, mist eliminator retrofit, sprinkler system optimization

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