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1、FastRefineryGasAnalysisSystemBasedontheAgilent7890BGCSystemandG3507ALargeValveOvenUsingMicropackedColumnsApplicationNoteHydrocarbonProcessingIndustryAuthorAbstractRogerLFirorAthreechannelsystemontheAgilent7890BGCSystemwasusedforthedetermi-AgilentTechnologies,Inc.
2、nationofrefinerygases.Channel1,usinganFIDandaluminaPLOTcolumn,was3850CentervilleRdusedforhydrocarbonsfrommethanetoC6+.HydrogenwasmeasuredonChannel3,Wilmington,De19808wherenitrogenwasusedforcarrier.PermanentgasesandhydrogensulfideweremeasuredonChannel2usingtheG350
3、7Alargevalveoven(LVO)underisothermalconditionswithheliumcarrier.Micropacked(1/16inod,1.00mmid)wereusedforthepermanentgaschannel.Channels1and3weretemperatureprogrammedwiththeircolumnsinthemain7890BGCSystemoven.Analysistimeaveragedapproximately8.5minutesincludingah
4、ydrogensulfidedetermination.IntroductionExperimentalRefinerygasanalysisisanessentialmeasurementinrefineryThecolumnandvalveconfigurationisshowninFigure1.operations.AdetaileddeterminationofhydrocarbonsthroughSevencolumnsareusedwiththesystem.Columns1throughC5withC6a
5、ndhigher(C6+)reportedasacompositepeakis3aredirect-heated,micropacked,andresideinthelargevalveusuallyrequired.Alongwithhydrocarbons,permanentgasesovencoiledaroundtwo15/8-inchmandrelsforsuperiormustbemeasured.Hydrogendetermination,overawidecon-temperaturestability.
6、Columns4and5locatedinthe7890Bcentrationrange,isalsonecessary.Finally,sulfurcontainingmainovenare1/8-inchpacked.Columns6and7,alsolocatedcompoundssuchashydrogensulfideandcarbonylsulfideinthemain7890Boven,arecapillaryandusedforhydrocar-mayalsoneedtobemeasured.bonsep
7、arationuptoC9.SamplescontaininghydrocarbonsaboveC9shouldnotbeinjectedonthesystem.ThesideTheRefineryGasAnalyzer(RGA)systemdescribedhere,withmountedTCDisusedexclusivelyforhydrogendeterminationtheexceptionofthePLOTcolumnforhydrocarbonseparation,usingnitrogenascarrie
8、r.Flowsourcesareprovidedbytwoisbasedon1/16-inchmicropackedcolumnsinUltiMetal.PCM’sandasplit/splitlessinlet.Three1/16-inchcolumnsusedforpermanentgasesandhydroge
