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1、哈尔滨工业大学工学硕士学位论文AbstractAlongwiththeriseofwastewatertreatmentratio,thesludgeoutputisincreasingcontinually.Facingwiththeseriousproblemofsewagesludge,ithasbecomethecommongoaltofindsafe,efficientandeconomicaltreatmenttechnologywiththereduction,stabilizationandreclamationofslud
2、ge.High-temperaturepyrolysisofsewagesludgereceivedwideattentionforitsrapidheating-up,highconversion,hugepotentialasresource,minor-hazardby-products,lowenergycosumptionandsoon,hasbeenregardedasanalternativetechnologyforburning.Takenthesewagesludgeasthemainobject,thisarticle
3、hasstudiednitrogen'sdistributingrulesamongthegas,liquid,solidphaseduringtheprocessofpyrolysis;analysedthespecificexistenceformofnitrogen-containinggaseousproductusingGS-MSandFTIR;analysedthetransformationruleofNH3andHCNusingTG-FTIR,andthenspeculatedtheirwaysofgeneration;st
4、udiedtheinfluenceontheproductionofNH3andHCNbyfinalpyrolysistemperature,microwaveabsorbingmaterial,sludgemoisture,catalyst(Fe)andthethewayofitsaddition.FortheNinthethree-phasedistributionandexistingforminthegaswhenthemicrowavepyrolysisofsewagesludge.Theresultsshowthat:thepe
5、rcentageoftheNinthegasaccountedfortotalNinthesludgeincreaseswiththethefinaltemperature,whilethepercentageofNintheoilandsolidresiduescorrespondinglyreduceasfinaltemperaturerising.UsingGC-MSandFTIRtechnologyanalysis:thenitrogen-containinggasobtainedfromhigh-temperaturepyroly
6、sisofsewagesludgemainlyintheformofNH3,HCN,andN2,alsoasmallamountofHNCO,anddidn’tdetectanyNOX.UsingTG-FTIRcombinedtechniqueontheNH3andHCNobtainedfromhigh-temperaturepyrolysisofsewagesludgeandthenanalysisthelawoftheirgeneration.Theresultsshowthat:whenthemicrowavepyrolysisofs
7、ewagesludge,NH3andHCNarefromthethermaldecompositionofproteinandnitrogenheterocyclicaromaticringmaterial.Inaddition,NH3alsocomesfromtheheatedsludgeadsorptionofvolatileammoniumsalt.Theresultsshowedthat:NH3andHCNproductionofboththetransientincreasewithtemperaturefirstandthend
8、ecreased,andthepeakvalueat800℃.Comparedtothetraditionalpyrolysis,NH3productionpeakoccurre
