Formation and emission characteristics of PMs in a 220 MW coal-fired unit

XIA Yongjun; GUI Liangming; WU Ying; WANG Qian; LIU Fasheng; LI Haishan

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Formation and emission characteristics of PMs in a 220 MW coal-fired unit

Thermal Power Generation Issue 6, (2016)

更新时间：2025-09-28

- Formation and emission characteristics of PMs in a 220 MW coal-fired unit
- 作者机构：
  
  国网江西省电力科学研究院,江西,南昌,330096
- 作者简介：
- 基金信息：
- DOI：
  CLC： X513
- Published Online：15 July 2016，
  
  Published：2016
- 稿件说明：
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XIA Yongjun, GUI Liangming, WU Ying, et al. Formation and emission characteristics of PMs in a 220 MW coal-fired unit[J]. Thermal Power Generation, 2016, (6).
DOI：

XIA Yongjun, GUI Liangming, WU Ying, et al. Formation and emission characteristics of PMs in a 220 MW coal-fired unit[J]. Thermal Power Generation, 2016, (6). DOI：

摘要

利用低压撞击器系统对某200 MW燃煤发电机组布袋除尘器入口和出口及石灰石-石膏湿法脱硫(WFGD)塔出口的颗粒物进行现场采样

分析了机组的颗粒物粒径分布情况、布袋除尘器的除尘特性，以及WFGD系统对颗粒物排放特性的影响。结果表明:煤粉燃烧生成的颗粒物呈明显的双模态粒径分布

超细颗粒物PM0.2在PM10中占比重较小

仅为0.64％；布袋除尘器对PM10颗粒物的脱除效率为99.98％

但对超细颗粒物PM0.2的脱除效率偏低

约为99.88％，这是由于布袋除尘器工作过程中小粒径颗粒更易穿透布袋及其表面的灰层；WFGD系统对粒径超过2.5 μm的颗粒物具有脱除作用

但在WFGD系统运行中由于石膏浆液携带以及超细颗粒物的团聚长大

会使粒径在0.5 μm左右的颗粒物质量浓度大幅增加。

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GUI Liangming

WU Ying

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LI Haishan

XIA Yongjun

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