超声雾化降尘装置数值模拟及实验研究  

Numerical simulation and experimental research on ultrasonic atomization dust suppression device

作　　者：王飞 任鹏 闫晶晶 高亚斌 李子文 贺志宏 刘振明 WANG Fei;REN Peng;YAN Jingjing;GAO Yabin;LI Ziwen;HE Zhihong;LIU Zhenming(Institute of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Center of Shanxi Mine Safety for Graduate Educalion Innovation,Taiyuan 030024,China;Xishan Coal mid Electricity(Group)Co.,Ltd.,Taiyuan 030000,China)

机构地区：[1]太原理工大学安全与应急管理工程学院,山西太原030024 [2]山西煤矿安全研究生教育创新中心,山西太原030024 [3]西山煤电(集团)有限责任公司,山西太原030000

出　　处：《煤矿安全》2021年第12期29-34,共6页Safety in Coal Mines

基　　金：2018年度山西省重点研发计划(社发领域)资助项目(201803D31053);山西焦煤集团公司重大技术攻关资助项目(201812xs06);爆炸科学与技术国家重点实验室(北京理工大学)开放课题资助项目(KFJJ19-03M)。

摘　　要：为进一步提高矿井降尘效率,重点研究了基于异质冷凝机理的超声雾化降尘方法,采用DPM和Mixture双模型对超声雾化降尘装置内的运动流场和粉尘扩散进行数值模拟,获得了超声雾化降尘装置参数的最优解,结合模拟结果和异质冷凝机理研制出超声雾化降尘实验平台并进行降尘实验。超声雾化降尘装置吸尘口垂直距离和直径是影响装置内部的风流运移区域和方式的主要因素,实验中吸尘口垂距为1.1 m,直径为0.2 m时,粉尘颗粒能够充分与水雾接触,超声雾化降尘时间较为适宜。结果表明:超声雾化降尘方法具有良好的雾化和降尘性能,对呼吸性粉尘的净化效果尤为显著,降尘效率达到93.54%。In order to further improve the efficiency of mine dust reduction,this paper focuses on a new ultrasonic atomization dust reduction method based on the heterogeneous condensation mechanism.The DPM and Mixture dual models are used to numerically simulate the motion flow field and dust diffusion in the ultrasonic atomization dust reduction device.The optimal solution of the parameters of the new ultrasonic atomization dust reduction device was obtained,and combined with the simulation results and the heterogeneous condensation mechanism,we developed an ultrasonic atomization dust reduction experiment platform and carried out the dust reduction experiment.The vertical distance and diameter of the dust suction port of the new ultrasonic atomization dust suppression device are the main factors that affect the air flow movement area and mode inside the device.In this experiment,the vertical distance of the dust suction port is 1.1 m,and the dust particles can fully communicate with each other when the diameter is 0.2 m.For water mist contact,the time of ultrasonic atomization to reduce dust is more suitable.The results show that the new ultrasonic atomization dust reduction method has good atomization and dust reduction performance,and the purification effect of respirable dust is particularly significant,and the dust reduction efficiency reaches 93.54%.

关 键 词：矿尘 降尘方法 超声雾化 异质冷凝 数值模拟 

分 类 号：TD714[矿业工程—矿井通风与安全]