CFD modeling and laboratory studies of dust cleaning efficacy of an efficient four stage non-clogging impingement filter for flooded-bed dust scrubbers  

作　　者：Ashish Ranjan Kumar Neeraj Gupta Steven Schafrik 

机构地区：[1]Department of Mining Engineering,University of Kentucky,Lexington,KY,USA [2]Department of Mining and Nuclear Engineering,Missouri University of Science and Technology,1400 N.Bishop Ave,Rolla,MO 65401,USA

出　　处：《International Journal of Coal Science & Technology》2022年第2期211-219,共9页国际煤炭科学技术学报（英文）

基　　金：Funding The authors acknowledge the National Institute for Occupational Safety and Health(NIOSH)for funding this research project.

摘　　要：Fibrous-type flters are used to capture dust particles in mining and other occupations where personnel are exposed for prolonged periods.Dust cleansing devices including fooded-bed dust scrubbers use these mesh-type multi-layered flters.These flters trap dust particles efciently on their surface and inside their mesh.However,their continued operation leads to dust build-up and clogging.This results in increased resistance of the flter and lowered airfow rate through the scrubber.This could potentially enhance the exposure of the miners.A non-clogging self-cleaning impingement screen type dust flter was designed by the authors for use in mining and industrial dust cleansing applications.The flter guides dirt-laden air through rapidly turning paths which forces it to shed heavier particles.The particles impact one of the impermeable solid metallic flter surfaces and are removed from the airstream.A full cone water spray installed upstream prevents any surface buildup of dust.This paper summaried the computer models generated to show the flter operations and laboratory experiments including optical particle counting to establish the cleaning efciency.

关 键 词：Dust flter Computational fuid dynamics modeling Iso-kinetic sampling Optical particle counting Flooded-bed dust scrubber 

分 类 号：TD714.4[矿业工程—矿井通风与安全]