发送罐下出料煤粉高压密相气力输送特性分析

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1、ABSTRACTAbs仃actTitle：InvestigationincharacteristicsofHighPressureDensePhasePneumaticConveyingofPulverizedCoalinaBoSomDischargingSendingVesselName：NiHongliangSuperbisor：ShenXianglinUniversity：SoutheastUniversityTbxt：Pulverizedcoalpressurizedgasificationtechnologyisalloptima

2、lchoiceofcleancoaltechnologies．Highpressuredensephasepneumaticconveyingisoneofthecrucialtechnologiesofgasificationtechnology．Therearemanyadvantagesoftheconveying，forexample，highsolidload，lOWgasconsumptionandlesspipewearing．AsthepulverizedcoaliShighconcentrations，itiSinfavo

3、rofthecoalgasificationprocess．Sendingvesselconveyingsystemcanfeedcoalintogasifiercontinuoulyandequably,andiSsuitableforcoalgasification．Researchoncharacteristicsofthisconveryingsystemisofpracticalsignificance．Abottomdischargingsendvesseldensephasesystemanditsfrontindepende

4、ntpipelineWasconstructedbasedonanexistingtopdischargingsystem．Thebottomdischargingvesselsharedamainconveyingpipelinewiththetopdischargingsystembymeansofanownconnectingpipeline．Bycomparingthetwoindependentconnectingpipelines，therewere0．7mshorterhorizontalpipe．1．21mlongerver

5、ticalpipeandtwomoreverticalbendsthanthoseofthetopdischargingsysteminthebottomdischargingsystem．Measuringpointsofpressuredropsofstraightpipesandbendswerelocatedinthemainconveyingpipeline．TestsofdensephasepneumaticconveyingofYanzhoubituminouspulverizedcoal谢thnitrogenwerecard

6、edoutintheabove-mentionedconveyingsystem．Inthetests．totalconveyingdifferentialpressure，conveyingpressure，fluidizinggasflowrate，supplementalgasflowratewerechangedrespectivelytoobservetheireffectonflowcharacteristicsofbottomdischargingsystem．111eflowcharacteristicsofbottomdi

7、schargingandtopdischargingsystemswerecomparedinthesametestconditions．Conveyingstabilitieswereanalyzed．EmpiricalcorrelationsoftheadditionalpressuredropintheconveyingsystemWasfitted．Testresultsindicatethatcoalmassflowrateincreaseswiththeincreasingintotalconveyingdifferential

8、pressureiffluidizinggasflowrateandsupplementalgasflowrateareunchanged．Whileinlowertotalco