摘要
针对煤矿粉尘的高危害性,借鉴声聚并理论,提出2种高频驻波声场与喷雾协同降尘技术方案,在自主设计试验平台上实测协同降尘效率,分析喷嘴孔径、高压喷雾水流量、超声波雾化器水流量、声波功率以及管道风速对降尘效率的影响.试验结果表明:采用超细雾滴+声波+高压喷雾协同降尘方案存在明显的增效作用,可将呼吸性煤尘降尘效率提升10%左右(相比高压喷雾降尘),声波功率和管道风速是影响协同降尘效率的主因,研究结果可为高频驻波声场与喷雾协同降尘的工程应用提供参考.
Aiming at the dust hazards,two types of high frequency standing wave sound field and spray for synergistic dust removal technology schemes are proposed,and the synergistic dust removal efficiency is measured on the self-designed experimental platform.Furthermore,the effects of nozzle diameter,high pressure spray water flow rate,ultrasonic atomizer water flow rate,acoustic power and pipe velocity on dust removal efficiency are analyzed.The experimental results show that there is an obvious synergistic effect of superfine droplet+acoustic wave+high pressure spray,and the dust removal efficiency of respirable coal dust is increased by about 10%(compared to dust removal by high pressure spray),in addition,the acoustic power and pipe velocity are the main factors affecting the synergistic dust removal efficiency.The research results can provide reference for the engineering application of high frequency standing wave sound field and spray for synergistic dust removal.
作者
吴世先
刘何清
陈永平
朱辉
WU Shixian;LIU Heqing;CHEN Yongping;ZHU Hui(School of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;School of Energy Engineering and Building Environment,Guilin University of Aerospace Technology,Guilin 541004,China)
出处
《矿业工程研究》
2023年第1期65-71,共7页
Mineral Engineering Research
基金
国家自然科学基金资助项目(5226040433)
广西自然科学基金资助项目(2021GXNSFAA220079)
交通运输部交通运输行业重点科技项目(2021-MS5-126)。
关键词
煤尘防治
驻波声场
呼吸性煤尘
降尘效率
coal dust control
standing wave sound field
respirable coal dust
dust removal efficiency
