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首页   >    矿业工程

深井循环通风快速空气净化系统试验研究

  • 谢怡霄1,聂兴信1*,张鑫1,孙泽宇1,赵一迪1,张晨煜1,赵林海2,李宗利2

  • 作者单位:
  • (1. 西安建筑科技大学资源工程学院;2. 宝鸡西北有色二里河矿业有限公司)
  • 基金项目:

  • 陕西省重点研发计划工业攻关项目(2023-YBGY-137);国家自然科学基金资助项目(5197040521)
  • 详细信息:

  • 作者简介:
  • 谢怡霄(1995—),女,硕士研究生,从事矿业工程通风等方面研究工作;E⁃mail:xieyixiao@xauat. edu. cn
  • 通讯作者:
  • 聂兴信(1972—),男,教授,从事矿山数字化及矿山系统优化研究工作;E⁃mail:niexingxin@126. com
  • PDF下载

Experimental study on a rapid air purification system for deep mine circular ventilation

  • English Author:
  • Xie Yixiao¹, Nie Xingxin¹, Zhang Xin¹, Sun Zeyu¹, Zhao Yidi¹, Zhang Chenyu¹, Zhao Linhai², Li Zongli²

  • Unit:
  • (1. School of Resources Engineering, Xi’an University of Architecture and Technology; 2. Baoji Erlihe Mining Co., Ltd., NWME Group Ltd.)
  • 摘要
  • 在线预览
  • 参考文献

摘要:

为了提高深井可控循环通风空气洁净度,加速爆破尘毒的过滤与排出,提出了将微纳米气泡水喷雾系统与水浴丝炭系统相结合的快速空气净化系统。基于自行设计的快速空气净化试验平台,以微纳米气泡水和雾化喷头为研究对象,优选出了雾化效果最佳的喷嘴孔径,对比了自来水与微纳米气泡水的喷雾降尘效率。并基于此平台,选定湿式喷淋纤维栅和炭式吸附网进行单因素试验,得到单一最佳水平。基于效果最佳的试验参数,进行最优组合净化试验。结果表明:在同一工况下,孔径 0.4 mm的高压喷头雾化角最大,可达 90°。微纳米气泡水的喷雾降尘效率均高于自来水降尘效率,并且微纳米气泡水更易捕获呼吸性粉尘。湿式喷淋纤维栅的孔径大,更易形成大面积的水膜,扩大与水溶性气体接触的面积,过滤效率也随之增高。较厚的活性炭纤维棉具有更多孔隙和更大的接触面积,对于CO的吸附效果更明显。快速空气净化系统的最优参数组合为:微纳米气泡水作为喷雾介质,采用 0.4 mm孔径的高压喷头,供水压力 3 MPa,湿式喷淋纤维栅采用双层 10目金属丝网,炭式吸附网选用 5 mm活性炭纤维棉。在该最优配置下,全尘与呼尘的平均降尘效率分别为72.83 %和79.12 %,CO、H2S和SO2平均净化效率分别达到84.47 %、78.56 %、55.42 %。

关键词:

深井开采;循环通风;金属矿山;快速空气净化系统;爆破尘毒;喷雾降尘;微纳米气泡水;水浴丝网

Abstract:

To improve the air cleanliness of controllable circular ventilation in deep mines and to accelerate thefiltration and discharge of blasting⁃related dust and toxic gases, a rapid air purification system combining a micro⁃nanobubble water spray system and a water bath wirecarbon system was proposed. Based on a self⁃designed experimentalplatform for rapid air purification, micro⁃nano bubble water and atomizing nozzles were investigated to determine theoptimal nozzle aperture for the best atomization performance. The dust suppression efficiency of tap water and micro⁃nanobubble water sprays was compared. Single⁃factor experiments were conducted using a wet spray fiber grid and a carbonadsorption mesh to identify optimal inpidual performance parameters. Finally, an optimal combination purificationexperiment was performed using the best⁃performing parameters. The results show that under the same operating condi⁃tions, a pressure fan⁃shaped nozzle with a 0.4 mm aperture achieved the largest atomization angle, reaching up to 90°.The dust suppression efficiency of micro⁃nano bubble water was consistently higher than that of tap water, and micro⁃nanobubbles more effectively captured respirable dust. Wet spray fiber grids with larger apertures formed larger water films,increasing the contact area with water⁃soluble gases and thereby improving filtration efficiency. Thicker activatedcarbon fiber cotton offered more pores and a larger surface area, significantly enhancing CO adsorption. The optimalparameter combination for the rapid air purification system was as follows: micro⁃nano bubble water as the spray medium;high⁃pressure nozzles with a 0.4 mm aperture and 3 MPa water supply pressure; wet spray fiber grid using double⁃layer10⁃mesh metal screen; and 5 mm thick activated carbon fiber cotton for the carbon adsorption mesh. Under this optimalconfiguration, the total dust and respirable dust removal efficiencies reached 72.83 % and 79.12 %, respectively, whilethe purification efficiencies for CO, H₂S, and SO₂ were 84.47 %, 78.56 %, and 55.42 %, respectively.

Keywords:

deep mining; circular ventilation; metal mine; rapid air purification system; blasting dust toxins; spraydust suppression; micro⁃nano bubble water; water bath wire mesh