搜索
NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&INOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&IPurposeThepurposeofthisprocedureistopreparetheImpuritiesRemovalColumnSystemtoreceivefeedfromupstreamequipmentfollowingmaintenance.Thesystemwillneedtoinitiallyacceptenoughfeedmaterialfromupstreamequipmenttoestablishatotalrefluxconditionoftheequipmentbeingstartedup.TheactofplacingthesystemintotalrefluxistoapplytheproperamountofreboilersteamflowtocreateenoughvaporsintheoverheadsystemtomaintainasteadyandcontinuousrefluxflowratewhiletherefluxdrumlevelcontrollerisinAutomaticcontrol.ConditionsTheImpuritiesRemovalColumnSystemhasbeenrepairedandtheequipmentisreadytoreturntoservice.NOTE:Airoroxygencanformapotentiallyexplosivemixturewithhydrocarbons,therefore,nitrogenpurgeallprocesslinesandequipmenttoatmosphereuntilprocesslinesandequipmentislessthan3%oxygen.Donotnitrogenpurgetotheblowdownsystemortheflaresystem.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&IGUIDELINEEnsurethefollowingitemsarecompleted:•allpumpsuctionanddischargevalvesareopen.•allcontrolvalvesarelinedupwithclosedcontrolvalves.•allcontrolvalvebypassesareclosed.•thecolumnandassociatedequipmentinstrumentationhasbeenconnectedandreadyforservice.•allinsulationisinplaceforpersonalprotection.•allcontrolvalveshavebeenverifiedforproperoperation.•allisolationblindshavebeenturnedtotheproperoperatingpositionaspertheVisualInspectionBlindRemovalProcedure.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&I•allutilityconnectionshavebeenturnedawayfromthevessels,blockedinonthevesselandblinded.•thecolumnandassociatedequipmenthasbeenpurgedofoxygenaspertheOxygenRemovalofProcessEquipmentprocedure.•thecolumnandassociatedequipmenthasbeenpressuretestedaspertheTightnessTestingofProcessEquipmentprocedure.NOTE:ThesolventloopisintegralandmustbecommissionedinunisonwiththeSolventStripperColumnandPOProductColumn.Ensurethefollowingvalvesareintheproperposition:•200mmblockvalveimmediatelyupstreamofIsoOctanerecyclefeedto01C0471.•150mmblockvalveonrefluxfrom01P0443-A/BtoIsoOctanerecyclefeedto01C0471.•150mmblockvalveimmediatelyupstreamonIsoOctanerecyclefeedto01C0472.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&I•50mmblockvalvedownstreamofHVonvaporsfromImpuritiesRemovalColumncondenserLPFlare.•100mmblockvalveupstreamoffeedlinefromHeaviesRemovalColumn.•300mmblockvalvedownstreamonImpuritiesRemovalColumnbottomstoPOProductColumn.•20mm&50mmvalvesdownstreamofpurgetoprocessfuels.•20mm&50mmvalvesupstreamofrecyclebacktothe2ndStagePrimeFractionator.•blockvalvesonsystemvesselsPSV(chainlockOPEN)toventgasandflaresystems.•coolingwatersupplyandreturnvalvesonequipmentandvesselsrequiringcooling.•allvalvesoninstrumentationtaps.•allvalvesonbridlessuchaslevelsightglasses.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&I•Ensurethefollowingvalvesareintheclosedposition:•FeedvalvetoImpuritiesRemovalColumnfromHeaviesRemovalColumn.•Isooctanerecycle/refluxvalvetoImpuritiesRemovalColumn.•ImpuritiesRemovalColumnbottomstoPOProductColumn.•HVonImpuritiesRemovalColumnoverheadvaporsfromcondensertoLPFlare.•HVonS4steamtoreboiler.•CheckoxygencontentatopenbleedersatthefollowinglocationswithacalibratedGas/OxygenAnalyzerorequivalent...NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&I•downstreamofcontrolvalveonoverheadpurgetoProcessFuels.•uptreamofrefluxcontrolvalve.•suctionbleederof01P0442-A/B•80mmventvalveontopofImpuritiesRemovalColumn.•50mmventvalveontopofImpuritiesRemovalColumnrefluxdrum...…thisisdonetodetermineairandoxygenhavebeendisplaced,oxygencontentreadingmustbe3%orlessontheoxygenanalyzer.•DepressuretheImpuritiesRemovalColumnsystemtoaslightpositivepressure.•Ensureallvesselsareproperlylinedup.•BackflushtheImpuritiesRemovalColumnCondenser01E0447.•NotifyConsoleOperatorImpuritiesRemovalColumnSystemisreadyforservice.•EnsuresuctionanddischargevalvesarelineduponImpuritiesRemovalColumnBottomsPump01P0442-A/Bwithspareatstandby.NOTE:ThisisforTrainingonly,andisnotintendedtobeusedasastepbystepprocedure.PO/MTBEIMPURITIESREMOVALCOLUMNSYSTEMSTARTUPFROMT&I•EnsuresuctionanddischargevalvesarelineduponImpuritiesRemovalColumnCondensatePump01P0483-A/Bwithspareatstandby.•PlacepumpsinserviceatrequestofConsoleOperatorassystemsrequire.•EstablishIsoOctanelevelinImpuritiesRemovalColumnfromSolventStripperColumnbottoms.•EnsureIsoOctanepurgevalveisclosedtopreventfreshIsoOctanefrombeinglosttotheliquidprocessfuelsystem.•EnsureIsoOctanefeedvalvetoPOProductColumnisclosed.•SetIsoOctaneflowcontrollertoarateofapproximately65,772kg/h.whileestablishing