新型冲击水浴与喷雾弦栅复合式水浴除尘器性能分析

doi:10.11930/j.issn.1004-9649.202507044

中国电力 ›› 2026, Vol. 59 ›› Issue (3): 156-164.DOI: 10.11930/j.issn.1004-9649.202507044

• 新型电网 • 上一篇

新型冲击水浴与喷雾弦栅复合式水浴除尘器性能分析

程伟¹(), 张英民¹(), 牛超¹(), 叶再贤²(), 郑永刚³(), 方立军⁴()

1. 天津国能津能热电有限公司，天津　300304
2. 宁波象山光明输送机有限公司，浙江宁波　315731
3. 北京中电尚明机电技术有限公司，北京　100080
4. 华北电力大学（保定）动力工程系，河北保定　071003

收稿日期:2025-07-16 修回日期:2026-01-26 发布日期:2026-03-16 出版日期:2026-03-28
作者简介:
程伟（1982），男，高级工程师，从事动力工程技术研究，E-mail：16051828@ceic.com
张英民（1978），男，高级工程师，从事火电厂锅炉、脱硫、燃料专业技术改造，E-mail：gdzhym@163.com
牛超（1987），男，工程师，从事电气工程及其自动化研究，E-mail：niuchao613@163.com
叶再贤（1971），男，工程师，从事智能化与自动化、材料与结构创新、节能与低碳化、安全与可靠性研究，E-mail：gmssj@163.com
郑永刚（1972），男，通信作者，高级工程师，从事物理过程数学建模技术应用研究，E-mail：zyghd2005@126.com
方立军（1971），男，副教授，从事洁净煤技术及大气污染物控制技术研究，E-mail：fanglijun2009@163.com
基金资助:
北京市自然科学基金面上资助项目（基于结构-传递-反应耦合机理与协同原理的孔隙结构调控方法研究，3252031）；国能集团天津公司项目（津能热电多维度耦合的输煤抑尘与煤泥水处理智能控制技术研究与应用，E313500019）。

Performance analysis of a novel combined water bath dust collector with impingement water bath and spray string grid

CHENG Wei¹(), ZHANG Yingmin¹(), NIU Chao¹(), YE Zaixian²(), ZHENG Yonggang³(), FANG Lijun⁴()

1. Tianjin Guoneng Jinneng Thermal Power Co., Ltd., Tianjin 300304, China
2. Ningbo Xiangshan Guangming Conveyor Co., Ltd., Ningbo 315731, China
3. Beijing Zhongdian Shangming Electromechanical Technology Co., Ltd., Beijing 100080, China
4. Department of Power Engineering, North China Electric Power University (Baoding), Baoding 071003, China

Received:2025-07-16 Revised:2026-01-26 Online:2026-03-16 Published:2026-03-28
Supported by:
This work is supported by Beijing Natural Science Foundation General Project (Research on the Regulation Method of Pore Structure Based on the Coupling Mechanism and Synergy Principle of Structure-Transfer-Response, No.3252031), Project of Guoneng Group Tianjin Company (Research and Application of Intelligent Control Technology for Multi-Dimensional Coupling of Coal Transportation Dust Suppression and Coal Slime Water Treatment in Jinneng Thermal Power, No.E313500019).

摘要/Abstract

摘要：

燃煤电厂输煤系统工作过程中容易产生大量的粉尘，若净化处理不当，将对环境造成严重污染。在水浴除尘技术和喷雾弦栅除尘技术研究基础上，提出一种新型冲击水浴与喷雾弦栅复合式水浴除尘器，通过对各除尘阶段进行数值模拟，分析影响除尘效果的因素。结果表明，冲击水浴段截面方面，风速越高，风管初始浸没水深越深，液体波动程度越剧烈，相应除尘阻力增大。喷雾方面，随着雾化压力升高，喷出液滴粒径变小，但雾化压力过高导致液滴凝聚，粒径增大，除尘效率下降。弦栅方面，建立双列弦栅局部模型，对速度场和压力场进行模拟，阻力损失集中在两列弦栅的前后区域，气流高低速区域交替分布，形成负压区。随着风速增加，负压范围随之扩大，有利于弦栅水膜形成，但同时将导致除尘阻力增大。提出的复合式设计融合了冲击水浴、喷雾弦栅等多重净化机制，具有高效、低耗、易维护的特点，尤其适用于输煤系统高浓度、多粒径的粉尘环境，解决了传统机械式除尘器对微米级粉尘去除率低的问题，为输煤系统除尘提供了模块化解决方案。

关键词: 湿式除尘, 冲击水浴, 喷雾弦栅, 数值模拟, 输煤系统

Abstract:

Coal-fired power plants' coal handling systems generate substantial dust during operation. Improper purification treatment will cause severe environmental pollution. On the basis of research on water bath dust removal technology and spray string grid dust removal technology, this paper proposes a novel combined water bath dust collector integrating impingement water bath and spray string grid. The factors influencing the dust removal efficiency are analyzed by conducting numerical simulations on each dust removal stage. The results indicate that for the cross-section of the impingement water bath section, the higher the wind speeds and the deeper the initial immersion water depth of the air duct, the more intense the liquid fluctuation, correspondingly increasing dust removal resistance. In terms of spraying, the particle size of the ejected liquid droplets decreases with the increase of atomization pressure; however, an excessively high pressure leads to droplet agglomeration and an increase in particle size, resulting in a decline in dust removal efficiency. For the string grid, a local double-row string grid model is established to simulate the velocity and pressure field. The resistance loss is concentrated in the front and rear areas of the double-row string grids, and the high and low wind speed areas of the airflow are alternately distributed, forming a negative pressure zone. With the increase of wind speed, the negative pressure range expands accordingly, which is conducive to the formation of a water film on the string grids but also causes an increase in dust removal resistance at the same time. The combined design proposed in this paper integrates multiple purification mechanisms such as impingement water bath and spray string grid, and features high efficiency, low energy consumption and easy maintenance. It is particularly suitable for the dust environment with high-concentration and multi-particle size in the coal handling system, solving the problem of low removal efficiency of micron-sized dust by traditional mechanical dust collectors, and providing a modular solution for dust removal in coal handling system.

Key words: wet de-dusting, impingement water bath, spray string grid, numerical simulation, coal handling system

程伟, 张英民, 牛超, 叶再贤, 郑永刚, 方立军. 新型冲击水浴与喷雾弦栅复合式水浴除尘器性能分析[J]. 中国电力, 2026, 59(3): 156-164.

CHENG Wei, ZHANG Yingmin, NIU Chao, YE Zaixian, ZHENG Yonggang, FANG Lijun. Performance analysis of a novel combined water bath dust collector with impingement water bath and spray string grid[J]. Electric Power, 2026, 59(3): 156-164.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202507044

https://www.electricpower.com.cn/CN/Y2026/V59/I3/156

图/表 8

图 1 新型冲击水浴与喷雾弦栅复合除尘装置

Fig.1 Novel impingement water nath-sray string grid combined dust removal device

图 2 不同风速下冲击水浴段液相体积分数分布

Fig.2 Liquid phase volume fraction distribution in the impingement water bath section under different wind speeds

图 3 不同风速各垂直高度液滴浓度分布

Fig.3 Concentration distribution of droplets at each vertical height for different wind speeds

图 4 不同时间液相体积分数分布

Fig.4 Liquid phase volume fraction distribution at different times

图 5 不同风管浸没水深液相体积分数分布

Fig.5 Liquid phase volume fraction distribution under different duct submergence depths

图 6 不同雾化压力下液滴颗粒分布

Fig.6 Particle distribution of droplets under different atomization pressures

图 7 不同过滤风速下弦栅局部速度云图

Fig.7 Localized velocity cloud of chord grill under different filtering wind speeds

图 8 不同过滤风速下弦栅局部压力云图

Fig.8 Localized pressure cloud of string fence under different filtering air speeds

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新型冲击水浴与喷雾弦栅复合式水浴除尘器性能分析

Performance analysis of a novel combined water bath dust collector with impingement water bath and spray string grid

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新型冲击水浴与喷雾弦栅复合式水浴除尘器性能分析

Performance analysis of a novel combined water bath dust collector with impingement water bath and spray string grid

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