Formation and emission characteristics of PM2.5 in a 660 MW coal-fired unit

PAN Siwei; ZHANG Kai; ZHANG Yu; XU Yishu; LIU Xiaowei; XU Minghou

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Formation and emission characteristics of PM2.5 in a 660 MW coal-fired unit

更新时间：2025-09-28

- Formation and emission characteristics of PM2.5 in a 660 MW coal-fired unit
- Thermal Power Generation Issue 9, (2016)
- 作者机构：
  
  1. 广东电网有限责任公司电力科学研究院,广东,广州,510080
  2. 华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： X513
- Published Online：25 September 2016，
  
  Published：2016
- 稿件说明：
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PAN Siwei, ZHANG Kai, ZHANG Yu, et al. Formation and emission characteristics of PM2.5 in a 660 MW coal-fired unit[J]. Thermal power generation, 2016, (9).
DOI：

PAN Siwei, ZHANG Kai, ZHANG Yu, et al. Formation and emission characteristics of PM2.5 in a 660 MW coal-fired unit[J]. Thermal power generation, 2016, (9). DOI：

摘要

对某660 MW机组燃煤锅炉静电除尘器(ESP)前、后颗粒物和湿法石灰石-石膏脱硫装置(WFGD)后颗粒物分别进行了现场取样分析

研究了燃用2种煤时机组的PM2.5生成特性

并分析了ESP及WFGD对PM2.5粒径颗粒等不同排放特性的影响。结果表明:该锅炉燃用2种煤产生的细颗粒物PM2.5均呈双模态分布

且PM2.5与PM10生成量与煤的灰分含量呈正相关关系；ESP对PM10、PM2.5和PM1.0的脱除效率分别为99.812%、99.711%和99.402%

对粒径0.1～1.0 μm颗粒物的脱除效率低于其他粒径颗粒物；烟气经过装有气-气换热器(GGH)的WFGD后

粒径在1.0 μm以上的颗粒物质量浓度下降约40%

而粒径＜1.0 μm的颗粒物质量浓度升高约35%；脱硫浆液喷淋对颗粒物的洗涤作用会降低粒径＞1.0 μm的颗粒物质量浓度；而超细颗粒物的团聚长大及脱硫浆液携带产生的石膏颗粒等则会导致＜1.0 μm的颗粒物质量浓度有所升高。

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