3MTBE-RECOV-ARC-SU-570

NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEMTBERECOVERYANDALCOHOLRECYCLECOLUMNSSTARTUPNOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEMTBERecoveryandAlcoholRecycleColumnsStartup•EstablishrefrigerantlevelinMTBERecoveryVentCondenser01E0563asperMTBERecoveryColumnSystemControlLoopNarrative.•OpenvaporreturnfromMTBERecoveryVentCondenser01E0563.•FeedTBAfromtheTBAFeedFractionatorbottomspumpsthroughtheMTBEReactorFeedheater,theMTBEOne-StepReactorswillbeby-passedwithfeedflowingthroughtheNeutralizationloopintotheMTBERecoveryColumn.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEMTBERecoveryandAlcoholRecycleColumnsStartupLineupthefollowingvalvesinthepositionsindicated.•On01R0570-Avalve1Aopen•On01R0570-Avalve8Aopen•On01R0570-Avalve2Aclosed•On01R0570-Avalve3Aclosed•On01R0570-Avalve4Aclosed•On01R0570-Avalve5Aclosed•On01R0570-Avalve6Aclosed•On01R0570-Avalve7AclosedNOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEMTBERecoveryandAlcoholRecycleColumnsStartup•Allnumberedvalveson01R0570-Bshouldbeclosed,thesearevalvesnumbers1Bthrough8B.•EnsurevalvesonupstreamanddownstreamsideofHV-57005arelinedup.•EnsurethatneutralizationloopislineduptoallowflowfromtheeffluentlineoftheMTBEOne-StepReactorsto01S0509-A/Bfilters.Verifythatloopby-passlineisclosed.•StartTBAFeedFractionatorBottomspump,slowlyopenflowcontrolvalve.•TargetTBAflowrateof5000kg/hrtoinventorytheMTBERecoveryColumn•Whenflowisestablished,settemperaturesetpointonTBAfeedflowat65°ConTC.•OpenpressurecontrollerandestablishalevelintheMTBERecoveryColumn01C0571andbeginheatingthecolumntotargettemperatureof99°CwiththeS1.4steamreboiler.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEMTBERecoveryandAlcoholRecycleColumnsStartup•OpenthebypassblockvalvearoundthePSVtoremovenon-condensablefromtheMTBERecoveryColumn.•MonitorthepressureasperMTBERecoveryColumnSystemControlLoopNarrative.•Thegoalistoestablishbottomtemperatureof99°ConMTBERecoveryColumn2ndTraytemperaturewithcolumnoverheadpressureoperatingatapproximately0.1037MPag.•Establishtherefluxflowwhentheoverheadrefluxdrumlevelhasasufficientlevel.Whensufficientlevelhasbeenestablished,adjustorstopflowfromtheTBAFeedFractionationColumnbyclosingfeedandifnecessaryshuttingdowntheTBAFeedFractionationBottomspumps.•BlockinthePSVbypass.•KeepMTBERecoveryColumnontotalreflux,donotpumpoverheadproducttotheMethanolExtractoratthistime,thiswillbedonewhenfeedforwardisestablishedfromtheMTBEOne-StepReactors.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEMTBERecoveryandAlcoholRecycleColumnsStartup•MaintainworkinglevelinAlcoholRecycleColumnbottombybringinginfeedfromMTBERecoveryColumninthroughfeedvalveaslevelsallow.FeedonlywhatisrequiredtomaintaintotalrefluxontheAlcoholRecycleColumn.DonotfeedforwardfromtheoverheadsystemontheAlcoholRecycleColumnatthistime,thiswillbedonewhenfeedforwardisestablishedfromtheMTBEOne-StepReactors.DonotflowmaterialthroughbottomofAlcoholRecycletoatthistime•SlowlyopenS15steamtoAlcoholRecycleColumnReboilerandbeginheatingcolumn.•Goalistoestablishtemperatureofapproximately157°Cwithoverheadpressureoncolumnofapprox.0.93MPag•StartAlcoholRecycleRefluxPump01P0526-Awith01P0526-BassparewhenrequestedbyConsoleOperator.•RefertoMTBERecoveryColumnandAlcoholRecycleColumnSystemControlLoopNarratives.•TheMTBERecoveryColumnandtheAlcoholRecycleColumnarenowreadytoacceptfeedfromtheMTBEOne-StepReactors.