城市生活垃圾中低温热解特性研究

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1、指导教师：登王蝗兹攫天津大学研究生院2005年6月ABsTRACTOwingtotheshortageofenergyandresourcesallovertheworldandth=emergenceofdifie‘rentutilizationofmunicipalwaste，recentyears，thetraditionalwastedisposalsuchassimplecollectionanddirectburyinghavebeengraduallysubstitutedbysomenewmethodswhichnotonlycanrestrainth

2、eyieldoftrashbutalsocaneffectivelyutilizewasteasonekindofresource．ByintroducingthedomesticandoverseasdisposalstatusofMSW(munMpalsolidwaste)，andcomparingtheadvantagesanddisadvantagesofsomedisposalmethods，suchaslandfill，compost，incinerationandpyrolysis，itprovesthatthepyrolysistechnologyis

3、amaindisposalmethodofMSWinthefuture，andthatstudiesonthisfiledhasbecomeanimpoMantdirectiontobedeveloped．Tosimulatethepyrolysischaracteristicsofrealfacility,anexternallyheatedfixed-bedpyrolysisfurnacewasbuilt．Compoundsmadebytypiealpyrolysiscomponentofmunicipalsolidwasteweretakenasthetesti

4、ngmaterials．Whilethepyrolysistemperaturerisingfrom300"Cto700"C，itseffectsontemperaturefieldofpyrolyzedwaste，pyrolysistime，pyrolysatedistribution，removalrateofvolatilefractionhavebeenstudiedbyaseriespyrolysistests．Thechangerulesofpyrolysisgascomponents，asimportantpyrolysates，hasadirectly

5、influenceontheuseofpyrolysisgas．Boththecontentofpyrolysisgascomponentanditsaverageheatvaluevarywiththepyrolysistemperatureasdefiniterules．Duringtheexaminationofpresentresearch，namelythepyrolysistemperaturefrom300℃to700℃．theheatvalueofpyrolysisgasvariedfrom5．4MJ／m’to15．I3MJ／m3．Themaincom

6、ponentsofpyrolysisgaswereH2，CO，CH4，C02，C2H4，C2H6．ThepyrolysisgasalsoconcludedothercomponentssuchasNOx，HCI，H2S，NH3．02，C3，C4，C5，andhydrocarbon，thecontentofwhichincreasedwiththepyrolysistemperaturerising．Elementalanalysesandindustrialanalysesofsemi-coke，thepyrolysisremains，werealsoproposed

7、inthispaper．Theheatvalueofsemi-cokewasbetween20．99MJ／kgand24．7MJ／kg，SOthatitcanbeusedassolidfuel．However’thecomponentsofsemi-cokechangedwiththepyrolysistemperature，whichsimultaneouslyaffectedthecombustioncharacteristicofsemi-coke．Analyzingthewholeprocessofwastepyrolysis，itSappa