Numerical Simulation Of Internal Flow Field And Experimental Study On Dust Removal Performance Of A New Wet Dust Collector

The deep development of china’s metal mines has brought many environmental problems while driving the social and economic development.The large amount of dust produced in the process of mine underground mining not only adds a heavy environmental burden and safety risk to mine production,but also causes serious harm to the physical and mental health and safety of the operators.The research and application show that the high efficiency wet dust collector is one of the first choice of dust collector equipment in mine.The traditional wet dust collector is widely used in mine,and there are problems such as low dust removal efficiency,large working resistance and high energy consumption.Therefore,in order to improve the wet precipitator dust removal performance,improve the efficiency of dust catcher,reduce the work resistance of the dust removal equipment,this paper studies the design is suitable for metal mines underground mining technological conditions and environment of new multi-function wet dust catcher,carry out the new mine more than wet precipitator field coupling numerical simulation and experimental research on dust removal,The influence of different operation parameters and structure parameters on the flow field inside the dust collector is deeply revealed,and the dust removal performance of the dust collector is further studied through experiments,thus laying a theoretical foundation and technical support for the improvement and optimization of the wet dust collector.First of all,in view of the problems existing in the traditional wet dust remover,this paper studies and designs a new type of mineral multi-functional wet chord cyclone dust remover based on the theory of spray dust reduction,the theory of vibration grille dust capture and the theory of cyclone dust removal.The dust remover is small in size and easy to move underground,combined with water mist,water film,water droplets,cyclone four dust-catching technologies,focusing on respiratory dust dust removal efficiency,operating resistance,energy consumption and other factors,increased the contact area of dust air flow and fog droplets,improve the time of mutual contact,effectively improve dust removal efficiency.Secondly,combined with the structure of the new type of wet vibrating string cyclone dust collector,the dust removal mechanism of spray,the dust catching mechanism of vibrating string grid and the influencing factors of dust removal performance are analyzed,and the essence and process of dust removal of wet vibrating string cyclone dust collector are analyzed.On this basis,aiming at the dedusting and dehydration section,the core component of the wet vibrating string cyclone dust collector,according to the gas-solid two-phase flow theory,a three-dimensional geometric model is used,The flow numerical simulation technology of Fluent software was used to build a multiple field coupling model.A numerical simulation of the internal flow field characteristics of the chord cyclone under multiple-field coupling was carried out to simulate the changes of the internal flow field,gas solid particle field and dust settlement of the dust remover under different factors such as flow rate,particle size,particle density,dust concentration,etc.The influence law of different operating parameters and structural parameters on dust capture and flow field operation inside the dust collector is revealed,in order to fully understand the comprehensive dust removal behavior of the chord cyclone dust remover.Thirdly,in order to more accurately grasp the dust removal law of wet chord cyclone and the influence of various influencing factors on dust removal efficiency and resistance,the experimental platform of wet dust remover was designed to study the filter wind speed and dust concentration,filter plate structure on dust removal performance is further studied by experiments,and the practical application effect of dust remover is explored.Finally,the experimental results are compared and verified with the numerical simulation results,which provides reliable technical support for the improvement and optimization of wet dust removers.This paper can not only lay a theoretical foundation for the evaluation and optimization of dust removal performance of wet chord cyclone dust remover,but also provide theoretical reference and data support for the popularization and application of wet chord cyclone dust remover.The research results will help to improve the dust removal performance of the new wet chord cyclone dust remover for mining,improve the control effect of dust pollution in metal mines,promote the scientific and technological progress of China’s environmental protection industry,and promote the progress of dust pollution control,industrial clean production and mine occupational hazard prevention and control has important theoretical and engineering significance.