Emission and control of PM<sub>2.5</sub> in flue gas for different types of coal-fired boilers

YIN Lianqing; ZHAO Haoning; YIN Chunxiao; ZHANG Shanshan

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Emission and control of PM_2.5 in flue gas for different types of coal-fired boilers

更新时间：2025-09-28

- Emission and control of PM_2.5 in flue gas for different types of coal-fired boilers
- Thermal Power Generation Vol. 43, Issue 7, Pages: 110-114(2014)
- 作者机构：
  
  1. 华北电力大学环境科学与工程学院
  2. 华电电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2014
- 稿件说明：
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YIN Lianqing, ZHAO Haoning, YIN Chunxiao, et al. Emission and control of PM_2.5 in flue gas for different types of coal-fired boilers[J]. Thermal power generation, 2014, 43(7): 110-114.
DOI：

YIN Lianqing, ZHAO Haoning, YIN Chunxiao, et al. Emission and control of PM_2.5 in flue gas for different types of coal-fired boilers[J]. Thermal power generation, 2014, 43(7): 110-114. DOI：

摘要

利用荷电低压颗粒物撞击器(ELPI)和扫描电子显微镜(SEM)对不同类型的燃煤锅炉PM2.5颗粒物(PM2.5)的粒径分布特性和颗粒物形貌特征进行了研究。结果表明:煤粉炉PM2.5产生量在4×106~17×106个/cm3

循环流化床锅炉在2×106个/cm3左右

其中煤粉炉PM2.5含量明显高于循环流化床锅炉;静电除尘器对PM2.5的脱除效率略低于布袋和电袋复合式除尘器

主要表现为对粒径在0.1~1μm的颗粒物捕集效率相对较低;石灰石-石膏法脱硫由于雾滴逃逸挥发后析出的固相物质和溶解盐

导致PM2.5排放量增大。

Abstract

By electrical low pressure impactor(ELPI)and scanning electron microscopy(SEM)

The particle size distribution of PM2.5 in flue gas and their morphology were investigated for different types of coalfired utility boilers.The results indicate that the number of PM2.5 in pulverized coal boilers ranges from4×106 to 17×106 per cubic centimeter

while that in circulating fluidized bed(CFB)boilers is about 2×106per cubic centimeter.The content fine mode particles in pulverized coal boilers are significantly higher than those in CFB boilers.Compared to bag and electric-bag composite dust collector

the electrostatic precipitator(ESP)has a lower removal efficiency of PM2.5

for the lower removal efficiency for particles with size from 0.1μm to 1μm.Due to the evaporation of the droplets escaped from desulfurization

the PM2.5 emission from FGD increases.

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Emission and control of PM2.5 in flue gas for different types of coal-fired boilers

DOI：

摘要

Abstract

关键词

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Emission and control of PM_2.5 in flue gas for different types of coal-fired boilers