分系统开停车操作程序1m10bj1e1063-010coproe

TableofTOC\o"1-1"\h\z\uSYSTEMDESCRIPTION系统说 PREPARATIONFORSTARTUP开车准 STARTUPPROCEDURE开车程 SHUTDOWNPROCEDURE停车程 SYSTEMDESCRIPTIONTheAmmoniaPre-Cooledsystemincludesscrewcompressor(K-601),oilseparatorvessel(V-601),oilcooler(E-603),oilfilter(F-603),ammoniacondenser(E-601),ammoniareceiver(V-602)andcontrolleretc氨预冷却系统包括螺杆压缩机（K-601）、氨（V-602）和控制器等。ThepurposeoftheAmmoniaRefrigerationsystemistoproviderefrigerationtocooltheprocessfeedgasstreamenteringcoldboxandthemixedrefrigerantstreambyMRpre-cooler(E-502).氨制冷系统目的是为进入冷箱的工艺原料并通过混合制冷剂预冷却器PREPARATIONFORSTARTUPAllnecessarypreparationandproblemshadbeenfinalizedandeachparameteriswithinthenormalrangebeforesystemstart-up.当所有必要的准备工作已经完成，所有问题已经Alltheequipmentsandpiinsystemareinstalledandconnectedincompliancewiththedesign.Theyhavebeenpurged,flushedanditremainednoundesirableobjectsuchasweldingrods,glovesorelse.Airtestmustbeperformedandqualified.系统中所有设Filtersmustbecleanedandheattracinghasbeenputintouseifnecessary.必须清洁过SystemNitrogenrecement:Thefeedgas(naturegas)isainflbleandexplosivemedium,soitisnecessarytomakethenitrogenrecementuntilthecontentofoxygenislessthan0.5beforeintroductionoffeedgas.系统氮气置换：原料气（天然气）属于Solotestrunfortherotatingequipmentscomplete.SolotestrunofARCdischargecondenserfanMF-601complete.氨制冷剂压缩机出ControlsystempreparationcompleteI/OtesthadbeenperformedControlinstrumenthadbeenadjustedParametersofinstrumentsandcontrolvalveshadbeensetControlprogramhadbeenadjustedPreparationofutilitiesandpriorsystemscomplete公用工程和上游系统准备工作已经完UtilityanddemineralizedwaterarereadyPowersystemisreadyInstrumentairisreadyNitrogenisreadyThefeedgassystem,fuelgassystem,heatingmediumsystemandaminesystemhaveallbeenfinisheddebuggingandbeeninnormaloperation.原料气系统、气系统、加ValvestatebeforesystemstartupManualvalvesfrontandbehindthesafetyvalvemustbelockopenandbypassvalves(ifany)mustbeclosed.安全阀前后的手动阀门必须锁定打开，旁通阀（）必须关闭。MainvalvesofIApipelineairvalvesofallinstrumentsvalvesandinstrumentrootvalvesshouldbeopen.仪表风管线主阀门、所有仪表阀的空气阀门和仪表根阀应当打开。Alltherestofprocessvalvesmustbeclosed.STARTUPPROCEDURELubeOilChargeLubricationoilneedtobechargedtosystemunderfollowingsituation:下列条件下须向系Beforethefirststartupof IfoillevelisinsufficientafterARCmaintenance.氨制冷剂压缩机后如果油位不足Afterrecementoflubeoil.润滑油更换后ChargeProcedureEnsurethattheoilsystemhasbeenpurgedandvacuumed.确保润滑油系统已经完成吹ConnecttheLubeoildrumandVBL-2501connectorwithhosepipeandoil OpenthemanualvalveVBL-2501.VBL-2501StarttheoilpumptointroducethelubeoiltoARCOilSeparator启动油泵将润滑油加入StoptheoilpumpassoonastheoillevelreachestothemiddleofsightglassLG-IsolatetheOilChargeValveofVBL-2501VBL-2501的油进料阀AmmoniaLiquorchargeTheLiquefiedanhydrousammonianeedtobechargedtoARCsystembeforethefirstARCstartupandwhentheammonialevelinNH3receiverisinsufficient.氨制冷剂压缩机首次开车及液氨内液位不足时须添加无水液氨。Ensurethattheoilsystemhasbeenpurgedandvacuumed.确保油系统已经完成吹扫和IsolatetheAmmoniareceiver.液氨 VGL-2812,VGL-2814,VGT-2700,VGT-2701,VGT-2702,andVGT-2703.关闭VGL-2802、VGL-ConnecttheAmmoniacylinderandVGL-2803connectorwithhosepipe.用软管连接液氨OpenthemanualvalveVGL-2803andVGL-2800.打开手动阀VGL-2803OpentheammoniacylindervalvesandintroducetheammoniatoNH3Receiver.打开液ChargemoreammonialiquidtoNH3receiverasaboveprocedure.按上述程序向液氨接Stopthechargeassoonastheammonialiquidlevelreachestoabout30%offullClosethemanualvalveVGL-2803andVGL-2800.VGL-2803ARCStartupPrepareandverifythesituationoffollowingmanualvalvesonsite.现场准备并确认下列TagVerifythemanualvalvesofAmmoniasystem1bypassvalveOpen suctionbypassvalve2V-601outletvalveV-601出口阀门Openthe4”gate打开4”3NH3CondenserinletOpentheNH3Condenserinletandoutletisolatedvalves打开液氨冷凝器和出口NH3CondenserinletNH3CondenserinletNH3Condenseroutletvalve液氨冷凝器出口阀门NH3Condenseroutletvalve液氨冷凝器出口阀门4NH3Receiverinlet液阀OpentheNH3Receiverinletandoutletisolationvalves 和出口NH3ReceiverinletvalveNH3Receiveroutletvalve液阀NH3ReceiveroutletNH3ReceiveroutletNH3Economizervalve液出口阀5NH3Economizeroutletvalve液氨省煤器出口阀门OpenNH3Economizeroutlet6ValvebetweenARCOilCoalescerandMRPre-CoolerOpenValvesbetweenARCOilCoalescerandMRPre-CoolerValvebetweenARCOilCoalescerandMRPre-Cooler7MRPre-CoolerNH3OilPOHeaterinletvalvePO加热器阀OpenNH3/OilPOHeaterinletandoutletvalves.打开氨/油PO加热器和出MRPre-CoolerNH3OilPOHeateroutletvalvePO8NH3LubeOilCooleroutletisolationvalveOpentheNH3LubeOilCoolerinletandoutletisolationvalves打开液氨润滑油冷却器和出口阀EGoutletvalveofLubeOilCooler润滑油冷却EGinletvalveofLubeOilCooler9ARCOilPumpoutletisolationvalve口阀OpentheARCOilPumpoutletisolationvalvesARCOilFilteroutletisolationvalveOpentheARCOilFilteroutletisolationvalves.口阀ARCOilSeparatoroilreturnisolationvalveOpenARCOilSeparatoroilreturnvalvesARCOilSeparatoroilreturnvalve氨制冷剂压门SetingduringstartupARCOilCoalesceroilreturnisolationvalve过滤器油回流阀OpenARCOilCoalesceroilreturnvalvesARCOilCoalesceroilreturnvalveSetingduringstartupTagSet1ARCOilSeparatorOn: 2ARCSuction343ARCDischarge24004ARCMotor345ARCSlideValve0-1006ARCOilCoalescerOilReturnAUTO动openwhenstarts压缩机启7ARCOilSeparatorOilReturnopenwhenstarts压缩机启8ARCSuctionopenwhenstarts压缩机启9ARCDischargexxNH3ReceiverPressure液接收NH3CondenserFanMotorVFDNH3Economizerammonialiquidlevel液氨省煤器液氨液位NH3CompressorSideStreamFeedPressurexxNH3/OilPOHeater液氨/油POxxVerifythatthelubeoiltemperatureintheARCOilSeparatoriskeptatxxxCbytheLubeOilHeaters确认润滑油加热器将氨制冷剂压缩机油分离器内润滑油温度保持在xxx°C。TheelectricalHeaterHE-601willstartupautomaticallywhenTIC-2503islessthanthesetpoint当TIC-2503低于设定值时，电加热器HE-601会自动启动。SetNH3CondenserairfanmotorstoAUTOmode将液氨冷凝器空气鼓风机电机设置为SetARCOilPumptoAUTOmode.Verifythatallotherpermissiverequirementsofthecompressoraresatisfied.确认压缩机VerifytheNH3CompressorslidecontrollerZIC-2500isin0%确认液氨压缩机滑动NH3CompressorslideshouldbealwaysinZEROloadposition.TheslidecontrollerZIC-2500hasbeenprogrammedtopulltheslideto0wheneverthecompressorisshutdown.氨压缩机滑阀应当始终处于零负载位置。滑动控制器Verifythatallotherntpermissiverequirementsaresatisfied.确认装置的所有其他InitiatetheNH3CompressorstartupsequencefromPLCbypressingthestartbuttononARCsystemoperationcontrol.Thiswillbringthecompressortoitsnormaloperationwiththefollowingsequenceautomatically在PLC上按氨制冷剂压缩机系统操作控制菜单EnergizeandstartARCOilPumpMotortoestablishtheoilcirculation.通电并启动氨制VerifythedifferentialpressurePDI-2503betweenthepumpdischargeandtheOilFilteriswithinthenormalrange确认泵出口和油过滤器之间的差压PDI-2503处于正EnableandopentheARCsuctionvalveXV-2502automatically.自动投用并打开氨制冷EnergizeandstartNH3compressorMotorMK-601after60secondsoftimedelay.通电EnableandopenARCOilSeparatorOilReturnvalveXC-2506automatically.自动投用EnableandopenARCOilCoalescerOilReturnValve(XC-2600)automatically.自动投EnableNH3CondenserairfanmotorsandthefirstfanwillstartxxsecondsafterNH3compressorMotorenergizedAnotheronestartsata15secdelayfromthepreviousone.台在第一台启动后15秒钟后启动。ThefanmotorswillbecontrolledbyNH3ReceiverPressurePIC-2700Deadbandmatrixautomatically.风机电机由液压力PIC-2700死区矩阵自动控制。Afterthatthecompressorisinitsrunningstate.AdjustmentandLoadDonecessaryadjustmenttotheAmmoniaRefrigerationSystemtoitsnormaloperationconditions.对氨制冷系统进行必要调节使其进入正常运行状态。LoadNH3compressorthroughslidevalveZIC-2500通过滑阀ZIC-2500Theopeningofslidevalveislimitedat10%whenNH3compressorstartup.滑阀的OpentheslidevalvegraduallytoloadtheNH3compressorinaccordancewiththerequirementofFeedgasandMRsystemafterARCsystemisstable.氨制冷剂压缩Ifnecessary,anoverallysisshallbecarriedouttodetecttheammoniacontent,watercontentandoilcontentoftheliquefiedanhydrousammoniaforeach3to6months必要时，AmmoniaRefrigerantSystemstartupcomplete.SHUTDOWNPROCEDURENORMALSHUTDOWNIftheAmmoniaRefrigerantCompressorSystemneedstobeshutdownasperrequirementofnormalntshutdown,maintenanceoranyotherreasons,thenormalshutdowncanbeactivateduntiltheMRcompressorsystemandNaturalGasLiquefactionSystemstopusingtheNH3refrigeration如果氨制冷剂压缩机系统根据装置正常停车、维Thenormalshutdownprocedureisasbelow:ConfirmthatMRcompressorsystemandNaturalGasLiquefactionSystemstopusingtheNH3refrigeration确认使用液氨制冷的混合制冷剂压缩机系统和天然气液化系统已经停机。ReducetheNH3compressorloadStoptheAmmoniaRefrigerantCompressorSystemfromPLCbypressingtheSTOPbuttononARCsystemoperationcontrol .Thiswillbringthecompressortoitsnormalshutdownwiththefollowingsequenceautomatically:按下氨制冷剂压缩机系统操作控制De-energizetheNH3CompressormotorDisableandclosetheARCsuctionvalveXV-2502automatically.自动禁用并关闭氨制冷DisableandcloseARCOilCoalescerOilReturnValve(XC-2600)automatically.自动禁DisableandcloseARCOilSeparatorOilReturnvalve(XC-2506)automatically.自动禁StopandDisableARCOilPumpMotorafter60secondsoftimedelay.经60秒钟延时后NH3Condenserairfanmotorswillstop5minutesafterNH3compressorMotorlosingofpoweriftheinterlockishealth.如果联锁处于健康状态，氨压缩机电机停电5分钟后，液氨AmmoniaRefrigerantCompressorSystemshutdowncompletes氨制冷剂压缩机系统停Checkpressures,temperaturesandlevelsthroughoutthesystemandadjustasnecessary.检查整个系统的压力、温度和液位，并视必要进行调节。Long-termShutdownThezingpointofLiquefiedanhydrousammoniais-77℃.SonormallyitisnotnecessarytoemptytheammoniafromsystemButthefollowingitemsstillshallbecarriedoutforsafety.液氨的冰点是-77℃。因此一般不需要清除系统中的液氨。但应当采取下列ClosetheisolatedvalvesofARCsystem.关闭氨制冷剂压缩机系统的阀CloseVGL-2407VGL-2400关闭VGL-2407、VGL-CloseVGL-2427VGL-2427关闭VGL-2427、VGL-CutofftheIAsupplyandpowerofallfieldinstruments.切断现场所有仪表的空气供应和Thedamagesontheinsulationlayerofwaterpipesandvalvesshouldberestored.Allnecessarymaintenancesneedtobemadeforinstrumentsandequipmentstoprotectthem.仪表和设备须进行所有必要的工作以加强保护。EmergencyShutdownIncaseofsuddenpower-off,feedgasshutdown,instrumentairshutdown,equipmentfailuresandotherunforeseeneventduringthenormaloperationrunning,thentshouldbeshutdownimminentlyandthefollowingstepswillbeperformed如果突然停电、原料气中断、仪表风中断、设备故障以及生产过出现的其他意外，装