湿式除尘器中气水喷雾降尘效果试验研究

金属矿山 ›› 2023, Vol. 52 ›› Issue (07): 82-90.

• “矿井粉尘智能防控理论及新技术进展”专题 • 上一篇下一篇

湿式除尘器中气水喷雾降尘效果试验研究

江丙友^1,² 张琦^1,2朱志辉^1,2黄金山^1,2

1. 安徽理工大学安全科学与工程学院,安徽淮南 232001;2. 工业粉尘防控与职业安全健康教育部重点实验室,安徽淮南 232001

出版日期:2023-07-15 发布日期:2023-09-05
基金资助:
国家自然科学基金项目(编号:52074012);安徽省高校杰出青年项目(编号:2022AH020057);安徽高校协同创新项目(编号:GXXT-2020-059)。

Experimental Study on Dust Reduction Effect of Air-water Spray in Wet Dust Collector

JIANG Bingyou^1,2 ZHANG Qi^1,2 ZHU Zhihui^1,2 HUANG Jinshan^1,2 #br#

1. School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;2. Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety,Ministry of Education,Huainan 232001,China

Online:2023-07-15 Published:2023-09-05

摘要/Abstract

摘要： 为提高煤矿井下湿式除尘器降尘效率,改善作业人员工作环境,提出了在湿式除尘器中安装内混式空气雾化喷嘴的降尘方法。首先,基于激光多普勒喷雾雾化特性测试平台,对比 3 种空气帽结构空气雾化喷嘴的雾化角和雾滴索特尔平均直径 D[3,2] ,优选出了雾化效果最佳的喷嘴。其次,基于湿式除尘器与气水喷雾降尘试验平台,选定喷嘴与风机距离、喷嘴供气压力、喷嘴供水压力和风机供气压力进行单因素试验,得到单一最佳水平。最后,基于正交试验理论,设计 4 因素 3 水平正交试验,开展了不同工况下的降尘试验。结果表明:在同一工况下,孔径为 2. 0 mm 的压力扇形喷嘴雾化角最大且雾滴粒径最小,D[3,2] 为 33. 20 ~ 50. 51 μm,更有利于微细粉尘的捕集与沉降;4 因素降尘效率显著性水平排序对于全尘和呼尘均为:喷嘴与风机距离>喷嘴供水压力>风机供气压力>喷嘴供气压力;降尘系统最优参数组合为:喷嘴与风机距离 2. 25 m、喷嘴供气压力 0. 4 MPa、喷嘴供水压力 0. 4 MPa 和风机供气压力 0. 2 MPa,全尘与呼尘的降尘效率可分别达到 90. 06%和 75. 91%。研究成果可为矿井湿式除尘系统的优化及应用提供理论参考。

关键词: 湿式除尘器, 气水喷雾, 雾化特性, 降尘效率, 正交试验

Abstract: In order to improve the dust reduction efficiency of wet dust collector in coal mine and improve the working environment of operators,a dust reduction method of installing internal mixing air atomization nozzle in wet dust collector is put forward. Firstly,based on the laser Doppler spray atomization characteristic test platform,the atomization angle and droplet average diameter D[3,2] of three air cap air atomization nozzles are compared,and the nozzle with the best atomization effect is selected. Secondly,based on the wet dust collector and air-water spray dust reduction test platform,the distance between nozzle and fan,nozzle air supply pressure,nozzle water supply pressure and fan air supply pressure are selected for single factor test, and a single optimal level is obtained. Finally,based on the orthogonal test theory,four factors and three levels of orthogonal tests are designed to carry out dust reduction experiments under different working conditions. The results show that under the same working conditions,the nozzle with 2. 0 mm aperture has the largest atomization angle and the smallest droplet size,and D [3,2] ranges from 33. 20 μm to 50. 51 μm,which is more favorable for collecting and settling fine dust. The order of significance level of dust reduction efficiency of 4 factors for total dust and exhaled dust is:distance between nozzle and fan > nozzle water supply pressure > fan air supply pressure > nozzle air supply pressure. The optimum parameters combination of dust suppression system is as follows:the distance between nozzle and fan is 2. 25 m,the air supply pressure of nozzle is 0. 4 MPa,the water supply pressure of nozzle is 0. 4 MPa,and the air supply pressure of fan is 0. 2 MPa. The dust suppression efficiency of total dust and exhaled dust can reach 90. 06% and 75. 91% respectively. This study results can provide theoretical reference for the optimization and application of mine wet dust removal system.

Key words: wet dust collector,air-water spray,atomization characteristics,dust reduction efficiency,orthogonal test

江丙友, 张琦, 朱志辉, 黄金山. 湿式除尘器中气水喷雾降尘效果试验研究[J]. 金属矿山, 2023, 52(07): 82-90.

JIANG Bingyou, ZHANG Qi, ZHU Zhihui, HUANG Jinshan. Experimental Study on Dust Reduction Effect of Air-water Spray in Wet Dust Collector[J]. Metal Mine, 2023, 52(07): 82-90.

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湿式除尘器中气水喷雾降尘效果试验研究

Experimental Study on Dust Reduction Effect of Air-water Spray in Wet Dust Collector

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