Experimental Study on Emission Characteristics of W-flame Pulverized Coal Boiler Under Multi-sound Source Excitation

YANG Yanfeng; MA Jiwei; LIU Liang; YANG Yang; LIANG Jianguo

doi:10.19805/j.cnki.jcspe.2025.240508

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Experimental Study on Emission Characteristics of W-flame Pulverized Coal Boiler Under Multi-sound Source Excitation

更新时间：2025-11-28

- Experimental Study on Emission Characteristics of W-flame Pulverized Coal Boiler Under Multi-sound Source Excitation
- Chinese Journal of Power Engineering Vol. 45, Issue 11, Pages: 1787-1794(2025)
- 作者机构：
  
  1. 长沙理工大学能源与动力工程学院,湖南,长沙,410114
  2. 阳城国际发电有限责任公司,山西,晋城,048100
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240508
  CLC：
- Published Online：17 November 2025，
  
  Published：17 November 2025
- 稿件说明：
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杨延锋,马继伟,刘亮,杨洋,梁建国. 多声源激励下W型煤粉锅炉排放特性试验研究动力工程学报, 2025, 45(11): 1787-1794 https://doi.

org/10.19805/j.cnki.jcspe.2025.240508
杨延锋,马继伟,刘亮,杨洋,梁建国. 多声源激励下W型煤粉锅炉排放特性试验研究动力工程学报, 2025, 45(11): 1787-1794 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240508.

org/10.19805/j.cnki.jcspe.2025.240508 DOI：

摘要

为探究多声源协同作用下W型煤粉锅炉的排放特性

对机组负荷稳定在265 MW(额定负荷为350 MW)下的W型煤粉锅炉进行声波影响燃烧的试验研究。在锅炉主燃区和燃尽区分别布置12台和4台声波激励装置

在单台电机频率均为35 Hz下按组循环投运

进气压力控制在0.35~0.47 MPa。结果表明

与未投运声波激励装置相比

脱硫装置进口烟气中SO

质量浓度下降0.2%

但脱硝塔A、B侧进口NO

质量浓度分别上升约29.65、22.31 mg/m

;锅炉热效率提高0.53百分点

飞灰含碳量(质量分数)下降1.55百分点。在炉膛内加入声场作用能够强化煤粉的燃烧强度和提高锅炉热效率。

Abstract

To investigate the emission characteristics of a W-flame pulverized coal boiler under multi-sound source excitation

an experimental study on the combustion influence of acoustic waves was conducted on a W-flame pulverized coal boiler with its unit load stabilized at 265 MW (with a rated load of 350 MW). Twelve and four acoustic excitation devices were arranged respectively in the primary combustion zone and the burnout zone of the boiler. Above devices were operated in cyclic groups with each individual motor operating at a frequency of 35 Hz

and the inlet air pressure was controlled within the range of 0.35 to 0.47 MPa. Results show that

compared with the operation condition without acoustic excitation device

the SO

mass concentration in the inlet flue gas of desulfurization device is decreased by 0.2%

while the NO

mass concentrations at A and B side inlets of denitration tower were increased by approximately 29.65 and 22.31 mg/m

respectively. Additionally

the boiler thermal efficiency is improved by 0.53 percentage points

and the carbon content (mass fraction) of fly ash is decreased by 1.55 percentage points. By adding an acoustic field within the furnace

the combustion intensity of pulverized coal can be enhanced and the thermal efficiency of boiler can be improved.

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references

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