储煤仓下给料机煤尘污染机理和控制技术.pdf

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1、摘要本文结合内蒙古大唐国际锡林浩特煤矿选煤厂粉尘污染综合治理改造项目工程，重点针对输煤系统中给料机的粉尘严重污染问题，深入剖析了其粉尘严重污染的原因，还对粉尘在空气中的扩散运移规律进行了研究。此外，本文以输煤系统暗道中106皮带上的给料机为例，运用气固两相流理论，建立起合理的数值模拟模型，利用大型数值计算模拟软件对这台给料机的粉尘逸散规律与浓度分布进行了模拟计算。然后，根据粉尘特性测定数据和对粉尘逸散规律的分析，制定了合理的粉尘污染综合治理改造方案，并且进行了现场施3工，取得了良好有效的治理成果，作业场所内的粉尘浓度已降至10mg/m以下，达到国家

2、标准要求。经过实践检验，导料槽密封加袋式除尘器负压抽尘的控尘除尘方案是一种有效可行的除尘方法，值得借鉴与推广。关键词：粉尘污染；导料槽；袋式除尘器；诱导风流；气固两相理论；数值模拟-I-AbstractIntegratingthecomprehensivemanagementandrenovationprojectofdustpollutionofInnerMongoliaDatangInternationalXilinhaoteMining,itdeeplyresearchedthereasonsofseriousdustpollutionoff

3、eeder,andconductedaresearchaboutdustspreadandmigration'sregularpattern.Inaddition,takingafeederon106beltintheundergroundpassageofCoalHandlingSystemforexample,thearticleappliedgas-solidtwo-phaseflowtheory,establishedareasonablenumericalsimulationmodel,andconductedcalculationofa

4、pproximatenumericalsimulationaboutlawofdissipationandconcentrationdistributiontodustofthefeeder,usinglarge-scalenumericalsimulationsoftware.Then,accordingtodustcharacteristicsmeasureddataandlawofdustdissipation,wedraftreasonablecomprehensivemanagementandrenovationprogramofdust

5、pollution,conductedafieldconstruction,andachievedgoodandeffectivegovernanceresults.Thedustconcentrationinworkplaceshasbeenreducedtolessthan103mg/m,meetnationalstandards.Practicedemonstratesthatthedust-cleaningschemeisfeasibleandeffectivedustremovalmethodandworthlearningandprom

6、otion,thatsealingusinggratedischargechuteanddrawingdustusingbagfilter.KeyWords:dustpollution;gratedischargechute;bagfilter;InducingAirFlow;Gas-solidtwo-phasetheory;NumericalSimulation-II-目录摘要......................................................................................

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