摘要
喷嘴作为煤矿喷雾降尘技术的最重要元件之一,其优选问题一直没有统一的方法,在一定程度上影响了喷雾降尘技术的最佳效果。为此,在尘雾耦合沉降实验基础上,找出了雾滴沉降粉尘规律,确定了粉尘与雾滴粒径的关系:D尘≈0.1 D雾;结合喷嘴性能实验,建立一种以喷嘴雾滴粒径与各工序粉尘粒径关系为主、常规性能参数为辅的优选方法,力求进一步改善井下喷雾系统,并在高庄煤矿综放面进行了应用。通过现场实测,降尘效果有所提高。
As one of the most important element of spraying dust- settling technology in coal mine,the optimization of nozzle has not a unified method,thus to a certain extent affects the best effect of spray dust- settling technology.Therefore,on the basis of the spray and dust reduction experiment,this paper finds out the laws of droplets settlement of dust,and the corresponding relation between different droplet size and coal dust droplet size captured is determined： Ddust≈0.1·Dspray. Combined with the performance test of nozzle,this paper sets up an optimal selection method,regarding the relationship between nozzle particle diameter and dust particle size in each process as the dominant role and conventional performance parameters as the subsidiary,for further to improve the underground spray system. The optimal selection method is applied in the fully mechanized working face of one Mine and also the dust suppression effect has increased through field measurement.
出处
《工业安全与环保》
北大核心
2014年第9期7-10,共4页
Industrial Safety and Environmental Protection
基金
国家自然科学基金重点项目(U1261205)
国家自然科学基金青年基金项目(51204103)
山东省“泰山学者”建设工程专项经费
中国煤炭工业协会2013年度科学技术研究指导性计划项目(MTKJ2013-358)
山东省科技发展计划项目(2013GSF12004)
高等学校博士学科点专项科研基金项目(20113718110005)
矿山热动力灾害与防治教育部重点实验室开放基金(JSK200208)
中国博士后科学基金项目(2012M521149)
山东省自然科学基金项目(ZR2011EEQ009)
山东科技大学资环学院科研创新团队项目(2012ZHTD06)。
关键词
喷雾降尘
喷嘴
粒径关系
常规性能参数
优选方法
spray and dust reduction
nozzle
relationship between particle sizes
conventional performance parameters
optimal selection method
