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AspenPlus(,100084)AspenTK22918A0438-1157(2003)08-1179-04MODELINGOFENTRAINEDBEDCOALGASIFIERSWITHASPENPLUSZHANGBin,LIZheng,JIANGNing,MALinweiandZHENGHongtao(DepartmentofThermalEngineering,TsinghuaUniversity,Beijing100084,China)AbstractTwomodelsthatcanpredictandsimulatetheperformanceofentrainedbedcoalgasifierwereestablishedbyusingtheprocesssimulatorAspenPlus1Themodelsarecharacterizedbyhandlingsolidmaterialsdirectlyratherthanconvertingthemintoequivalentconventionalcomponents1OnemodelusesAspenbuilt2inRGibbsmodel,andtheotherusesauserself2definedmodel1BothmodelswereverifiedbytheindustrialdataofthreetypicalentrainedbedgasifiersTexaco,ShellandDestec1Finally,theoptimalequilibriumtemperaturerangesofdifferentgasifierswereanalyzedanddiscussed1Theanalysisshowedthattheoptimalequilibriumtemperatureofslurry2feedgasifierswaslowerthanthatofdry2coal2feedShellgasifier,andtheresultsoftheslurry2feedtypegasifiersweremoresensitivetoequilibriumtemperature1Keywordsentrainedbedgasifier,mathematicalmodeling,Aspen2002-05-08,2002-08-28.:.:,,23,.:(No1G1999022304).,.,[1].,[2].,.,Aspen,Aspen.,.Receiveddate:2002-05-08.Correspondingauthor:Prof.LIZheng.E-mail:lz2dte@mail1tsinghua1edu1cnFoundationitem:supportedbytheStateKeyDevelopmentPro2gramforBasicResearchofChina(No1G1999022304).(),,..548Vol154820038JournalofChemicalIndustryandEngineering(China)August20031AspenMIXED()CISOLID()NC()3,(NC),(C2H6,C3H8,H2S),,,.:,;,,;,.,,1.COH2CO2CH4ArN2H2SCOSH2OO2,Coal()Ash()UBC()3NCFig11Aspenflowsheetforgasificationprocesswithbothconventionalandnon2conventionalsub2streamsincluded.DComp,Coal22CSH2N2O2AshUBC.Gasifier,AshUBC,.OutputAshUBC,.[3].1,2/Lit1CR(calculationresults)(2).Table1Inputofseveraltypicalentrainedbedgasifiers[3]GasifierCoalFlowratesofcoalelements/kgs-1CHONSClMoistureAshHHV/kJkg-1H2Oflowrate/kgs-1TexacoIllinois6350163261765013561351915014568195491892970619184161ShellIllinois636214223113361745192514014514106100172668211125185TexasLignite33115724104861185195190145251490126243631690DestecTexasLignite3301824122861055185518501822911529012224366164252129GasifierCoalOxidantflowrate/kgs-1O2ArN2N2flowrate/kgs-1Gasifierpressure/MPaCoaltemperatore/KOxidanttemperature/KOxidantpressure/MPaCarbonconversion/%TexacoIllinois64341992018751440421353121153561454799109ShellIllinois6430201415144411723108353115393115251149915TexasLignite3701131716941544212273531153931152815999132DestecTexasLignite4561772119151670281593121153931153099163Table2Comparisonofliteraturedata(Lit1)andmodel2calculatedresultsforgasifierperformanceGasifier/CoalVaporfraction/%COH2CO2H2OCH4ArN2H2SCOSOutlettemperature/KEquilibriumtemperatureselected/KTexaco/Illinois6Lit13915830128101781614501079019101731010261644126CR41132281829116171940102401901771010631551175UserCM14119128138815618140101401901770196010461598108UserCM2391562917110194161670136019101781103010416361671353115Shell/Illinois6Lit16310526174114921010103111410811301141699185CR631726134112111760101421114115115501171707115UserCM163179261261116118010211114114115801131720144UserCM2631572612511411167011111114115116011317281251533115081120038Table2(continued)Gasifier/CoalVaporfraction/%COH2CO2H2OCH4ARN2H2SCOSOutlettemperature/KEquilibriumtemperatureselected/KShell/TexasLigniteLit16016327157217731201033110341340132010371644125CR61123271062136314801014110141420139010391681195UserCM161135261952125315901013110241420139010291690155UserCM2601872711321763122011411024143014010317011751483115Destec/TexasLigniteLit121181241617115341640103201780154012501009641310195CR21118251071716434142010750179016101250100951271125UserCM1211282417517147341770106017701640125010071278177UserCM2211682415917115341870105017701640125010112711911298115Notes:11UserCM1andUserCM2aretheresultsofcalculationmode1andmode2inuser2definedmodel121OutlettemperaturesofeverygasifierinLiteraturearenotthesame,dataherejustforreference1,EPRI,Texaco.,3.,[4]Shell5,.2Aspen,.,As2pen,Fortran(proprietary).2112,(Coal)(Oxidant)(N2)(WS)(QLoss),(Gas)(Ash)(UBC).Fig12EstablishedAspenUserModelforgasifierbasedonWatkinsonModel3:p,Xc,TkTg.COH2CO2CH4N2H2SCOSH2OAr,9.,Watkinson[5]3YH2YCO2YCOYH2O=010265exp(3956/Tk)(1)YCH4YH2OYCOY3H2p2=61712510-18exp(27020/Tk)(2)YH2SYCO2YCOSYH2O=0175134exp(4083/Tk)(3)2,(4)ECoal+EOxidant+EN2+EWS-QLoss=EGas+EAsh+EUBC(4)(4)[6].QLoss,2%.212Tg,:Tk=Tg,;,Tk,Tg.1,2(1UserCM1,2UserCM2).2,11;2Tk,.Tk,(5),34.Err=i(YCi-YLi)2(5)1811548:AspenPlusFig13DestecgasifierandTexacogasifierFig14Shellgasifier,3,Texaco13201370K,Destec12701320K,Shell14701540K.,,DestecTexaco,Shell,.(4Shell),(),..3(1).(2):;Shell;.(3),2%,NH3HCNHCl,.Ei,WErrQLoss,WTg,KTk,KYiYCiiYLiiReferences1ConsultantCommitteeofChinaStateMajorFundamentalResearchPlan.StrategyReportonEnergyFieldin10thFive2yearPlan,20012NiWeidou(),LiZheng(),XueYuan().Poly2generationEnergySystemBasedonCoalGasificationIntegratedOptimizationandSustainableDevelopmentofResources,EnergyandEnvironment.EngineeringScience(),2000,2(8):59683SimbeckDR,KorensN,etal1CoalGasificationGuidebook:Status,Applications,andTechnologies.USA:ElectricPowerResearchInstitute,19934ShellDevelopmentCom