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[1]李熙今,荆德吉,徐洋,等.火电厂输煤系统粉尘运移研究及抑尘系统应用*[J].中国安全生产科学技术,2026,22(2):14-22.[doi:10.11731/j.issn.1673-193x.2026.02.002]
　LI Xijin,JING Deji,XU Yang,et al.Research on dust transport in coal handling system of thermal power plant and application of dust suppression system[J].Journal of Safety Science and Technology,2026,22(2):14-22.[doi:10.11731/j.issn.1673-193x.2026.02.002]
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火电厂输煤系统粉尘运移研究及抑尘系统应用*

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
22
期数:
2026年2期
页码:
14-22
栏目:
安全工程技术
出版日期:
2026-02-28

文章信息/Info

Title:
Research on dust transport in coal handling system of thermal power plant and application of dust suppression system
文章编号:
1673-193X(2026)-02-0014-09
作者:
李熙今; 荆德吉; 徐洋; 马明星; 杨嫡; 李东辉
(1.辽宁工程技术大学 安全科学与工程学院，辽宁 阜新 123000；2.辽宁工程技术大学 矿山热动力灾害与防治教育部重点实验室，辽宁 阜新 123000；3.国家卫生健康委职业安全卫生研究中心，北京 102300；4.辽宁工程技术大学 土木工程学院，辽宁 阜新 123000；5.喀左县应急管理局，辽宁 朝阳 122000）
Author(s):
LI Xijin;  JING Deji;  XU Yang;  MA Mingxing;  YANG Di;  LI Donghui
(1.School of Safety Science and Engineering,Liaoning Technical University;2.Key Laboratory of Mining Thermodynamic Hazards and Prevention,Ministry of Education,Liaoning Technical University;3.National Center for Occupational Safety and Health,National Health Commission of the People’s Republic of China;4.School of Civil Engineering,Liaoning Technical University;5.Kazuo County Emergency Management Bureau)
关键词:
输煤系统; 粉尘运移; 喷雾降尘; 现场应用
Keywords:
coal transport system;  dust migration;  spray dust suppression;  field application
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2026.02.002
文献标志码:
A
摘要:
为解决火电厂输煤系统中犁煤器工作时的粉尘污染问题，基于湿式降尘理论，设计了1种微细雾抑尘系统，通过数值模拟的方法研究厂房内粉尘的运移规律。在山西河曲电厂11#皮带选取1组犁煤器进行喷雾试验，对喷头在不同参数（喷头角度、气压与水压）下的降尘效率进行测量，并在11#皮带上对所得最佳参数进行应用与效果验证。研究结果表明：30 μm以上的颗粒主要沉降在落煤口0.5 m范围内，10~30 μm的颗粒分布于落煤口前1~1.5 m处，而小于10 μm的颗粒则主要沉降于人行通道区域。经试验喷头在朝地面倾斜20°、气压0.3 MPa、水压0.1 MPa条件下降尘效率最高。经单皮带工作与双皮带工作2种工况下的大规模现场测试，总粉尘与呼吸性粉尘的最高降尘效率分别达到90.12%和88.11%。研究结果可为治理火电厂输煤系统中犁煤器工作时的粉尘污染问题提供参考。
Abstract:
In order to address the dust pollution issue during the operation of plows in coal transport systems at thermal power plants,a fine mist dust suppression system is proposed based on wet dust suppression theory.This study uses numerical simulations to investigate the migration patterns of dust in the plant building.A plow in the No.11 conveyor belt at the Hequ Power Plant in Shanxi is selected for spraying experiments,where the dust suppression efficiency of the spray nozzles under various parameters (nozzle angle,air pressure,and water pressure) is measured.The best parameters obtained are applied and verified in practice on the No.11 conveyor belt.The results show that particles larger than 30 μm primarily settle within a 0.5 m range of the coal drop point,particles between 10 and 30 μm are distributed 1 to 1.5 m in front of the drop point,and particles smaller than 10 μm mainly settle in pedestrian passage areas.The highest dust suppression efficiency is achieved under the conditions of a nozzle inclined at 20° towards the ground,air pressure of 0.3 MPa,and water pressure of 0.1 MPa.Large-scale field tests under both single-belt and dual-belt working conditions show that the maximum dust suppression efficiencies for total dust and respirable dust are 90.12% and 88.11%,respectively.The findings provide a reference for solving dust pollution problems during the operation of plows in coal transport systems at thermal power plants.

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备注/Memo

备注/Memo:
收稿日期： 2025-10-09
* 基金项目： 国家自然科学基金项目（52474229）；2021年度辽宁省教育厅科学研究经费项目（LJKZ0323）
作者简介： 李熙今，硕士研究生，主要研究方向为粉尘综合治理技术。
通信作者： 荆德吉，博士，教授，主要研究方向为粉尘综合治理技术。
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