Field experimental research on PM<sub>2.5</sub> generation and emission characteristics of pulverized coal and CFB boilers in power plants

ZHAO Zhifeng; DU Qian; ZHAO Guangbo; GAO Jianmin; DONG Heming; CAO Yang; HAN Qiang; SU Lipeng; YUAN Pengfei

doi:10.11949/j.issn.0438-1157.20141262

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Field experimental research on PM_2.5 generation and emission characteristics of pulverized coal and CFB boilers in power plants

更新时间：2025-12-10

- Field experimental research on PM_2.5 generation and emission characteristics of pulverized coal and CFB boilers in power plants
- CIESC Journal Issue 3, Pages: 1163-1170(2015)
- 作者机构：
  
  1. 哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001
  2. 东北电力科学研究院有限公司,辽宁,沈阳,110000
  3. 华电电力科学研究院,浙江,杭州,310030
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141262
  CLC： 513
- Online First：05 March 2015，
  
  Published：05 March 2015
- 稿件说明：
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ZHAO Zhifeng, DU Qian, ZHAO Guangbo, et al. Field experimental research on PM_2.5 generation and emission characteristics of pulverized coal and CFB boilers in power plants[J]. CIESC Journal, 2015, (3): 1163-1170. DOI: 10.11949/j.issn.0438-1157.20141262.
DOI：

ZHAO Zhifeng, DU Qian, ZHAO Guangbo, et al. Field experimental research on PM_2.5 generation and emission characteristics of pulverized coal and CFB boilers in power plants[J]. CIESC Journal, 2015, (3): 1163-1170. DOI: 10.11949/j.issn.0438-1157.20141262. DOI：

摘要

采用稀释采样方法对一台220 MW煤粉炉(锅炉A)及一台300 MW的CFB锅炉(锅炉B)电袋复合式除尘器前后PM2.5进行现场采样。通过ELPI测定PM2.5的粒径分布;采用SEM分析PM2.5的显微结构;采用EDX及ICP-OES分别对分级PM2.5中次量及痕量元素含量进行了检测。结果表明

锅炉A和B除尘前后对应的PM2.5粒数及质量浓度分布均不同;锅炉A和B产生的PM2.5分别以较为光滑球形和不规则形状为主

锅炉A除尘后PM2.5呈表面粗糙球形

锅炉B除尘后PM2.5单颗粒形貌特征不变;锅炉A和锅炉B产生的PM2.5除尘前后在各粒径段中Si、Al、Fe、Ca和Mg含量基本一致

As、Cd和Se含量随着粒径的减小而增大;除尘后锅炉A产生PM2.5中As和Se含量增加

且在亚微米PM2.5中As和Se含量的增加更明显

锅炉B除尘后PM2.5中As和Se含量基本不变。

Abstract

A dilution sampling method was used to collect PM2.5 before and after COHPACs (compact hybrid particulate collector) generated by a pulverized coal boiler (boiler A) and a circulating fluidized bed boiler (boiler B) with installed capacities of 220 MW and 300 MW

respectively. Particle size distributions (PSDs) of PM2.5 were analyzed by ELPI; individual microstructures of PM2.5 were analyzed by SEM (scanning electron microscopy); concentrations of minor elements in PM2.5 were analyzed by EDX (energy-dispersive X-ray analysis) and concentrations of trace elements in PM2.5 were analyzed by ICP-OES (inductively coupled plasma optical emission spectroscopy). The distribution characteristics of number and mass concentration of PM2.5 at the corresponding sampling positions of two boilers were different. Most of the PM2.5 before and after COHPAC-A (boiler A's) were spherical; most of the PM2.5 before and after COHPAC-B (boiler B's) were irregular in shape; the PM2.5 after COHPAC-A were with relatively uneven surface

PM2.5 microstructures before and after COHPAC-B were similar; mass fraction size distributions of Si

Ca and Mg in PM2.5 before and after the two COHPACs were similar; mass fraction size distributions of As

Cd and Se in PM2.5 before and after the two COHPACs increased with decreasing size; mass fraction size distributions of As and Se in submicron PM2.5 after COHPAC-A were higher than those before COHPAC-A

but mass fraction size distributions of As and Se in PM2.5 before and after COHPAC-B were correspondingly nearly the same.

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Field experimental research on PM2.5 generation and emission characteristics of pulverized coal and CFB boilers in power plants

DOI：10.11949/j.issn.0438-1157.20141262

摘要

Abstract

关键词

Keywords

references

Field experimental research on PM_2.5 generation and emission characteristics of pulverized coal and CFB boilers in power plants