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《Evaluation of Vapor-Phase Reactivity of Primary Tar produced by flash pyrolysis of coal》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、290Energy&Fuels1996,9,290-294EvaluationofVapor-PhaseReactivityofPrimaryTarProducedbyFlashPyrolysisofCoalJun-ichiroHayashi,ShinobuAmamoto,KatsukiKusakabe,andShigeharuMorooka"DepartmentofChemicalScienceandTechnology,KyushuUniversity,6-10-1,Hakozaki,Higashi-ku,Fukuoka812,Japan
2、ReceivedJuly13,1994.RevisedManuscriptReceivedJanuary13,1995@FlashpyrolysisofMorwellbrowncoalandWandoansubbituminouscoalwasperformedwiththreetypesofpyrolyzers:aCurie-pointpyrolyzerinwhichthesecondarypyrolysisofvolatileswassuppressed,anentrained-flowreactorinwhichtheprimaryan
3、dthesecondarypyrolysisproceededatthesametemperature,andafluidized-bedreactorthatwasdividedintodensebedandfreeboardregionsoftheprimaryandthesecondarypyrolysis,respectively.Thetemperatureinthedensebedandfreeboardregionsofthefluidizedbedreactorwasindependentlycontrolled.Theyie
4、ldofmono-anddiaromaticproducts,themostabundantintar,wasadoptedasthemeasureforthereactivityofinitialtargeneratedbytheprimarypyrolysis,andtheroleoftemperatureintheprimarypyrolysiszoneonthereactivityoftheinitialtarinthevaporphasewasexamined.Theyieldofmono-anddiaromaticproducts
5、forWandoancoalwasnotaffectedbytheprimarypyrolysistemperatureabove600"CbutthatforMorwellcoalwasgreatlyinfluenced.IntroductionCurie-pointpyrolyzerswerealsoemployed,andquitesimilarresultswereobtainedonthetemperaturede-Flashpyrolysisisanattractivecoalconversionpro-pendenceofmas
6、syieldoftar.8-10cessforobtainingliquidproductssuchasBTXandTarisacomplicatedmixtureofcoalfragmentshavingpolycyclicaromatichydrocarbons.Normally,itconsistswidelydistributedchemicalstructure.Structuralpa-oftworeactionsinseries:primarypyrolysisoftherameterssuchasWCatomicratio,c
7、arbonhydrogenmacromolecularnetworkofcoal,andsecondarypyroly-aromaticity,11J2averagemolecularmass,andmolecularsisofvolatilesinthegasphase.Usefularomaticsaremassdistribution(MMD)3,4,13-16havebeeninvestigatedmainlyformedbythelatterreaction,whiletheformerforflashpyrolysistarsob
8、tainedwiththewire-meshreactionproducestheirprecursors.Inthisarticle,thepyrolyzers.
