脫硫、硫銨、洗苯、油庫(kù)工段聯(lián)合試運(yùn)轉(zhuǎn),開(kāi)工試車方案學(xué)習(xí)培訓(xùn)版（Desulfurization,washing benzene,ammonium sulfate,oil section joint commissioning,trial version training scheme）

脫硫、硫銨、洗苯、油庫(kù)工段聯(lián)合試運(yùn)轉(zhuǎn),開(kāi)工試車方案學(xué)習(xí)培訓(xùn)版（Desulfurization,washingbenzene,ammoniumsulfate,oilsectionjointcommissioning,trialversiontrainingscheme）CombinedtestrunprocessofdesulfurizationunitSequenceofeventsmediaoperationpoints1ammoniacoolertestrun,circulatingwaterexhaust,throughthewater.2precoolingtower,circulatingwatercooler,watertestrun,lowtemperaturewaterexhaust,waterthrough.3,desulfurizationliquid,circulatingpump,industrialwater,mechanicalsealwater.4foampump,industrialwater,mechanicalsealwater.5,reactiontank,desulfurizationtower,fogcatcher,industrialwaterthroughwater.6compressedairpipetestrun,industrialwatercleaningwater.7,desulfurizationtower,regenerationtower,desulfurizationliquid,circulatingpump,accidenttrough,wasteliquidtanklinkagetestrun.Industrialwateraccidenttrough80%waterlevel-startdesulfurizationliquidpump-regenerationtower-desulfurizationtower-reactiontank,waterlevelof80%,stopwatersupply.Thepipeisclean,thenozzleisremoved,theexhaustvalveisopened,andthevalveisclosed.Checkthepumpoutletpressure,bearingtemperaturerise,noise.8foampumpjointcommissioningofindustrialwaterbytheregenerationtower-sulfurfoamtank-foampump-Super-Tank-pump-liquidcentrifugereactor-desulfurizationcirculatingpump-regenerationtower.Checkthepumpoutletpressure,bearingtemperaturerise,noise.9,theremainingammoniapipetestrun,industrialwaterfromtheprecoolingtowergaspipebottom500mmclosedvalve.10precoolingtowersystemtest,industrialwatercirculation:circulatingpump-cooler-precoolingtower-circulatingpump.Thenozzleisremoved,theexhaustvalveisopenedandthevalveisclosed.Preventliquidlevelatthebottomofthetowerfrombeingevacuated.11emptyingpipetestrun,industrialwatertest,closethevalve.12valverotation,toconfirmthedirectionofthevalve.13steampipetestruntothetower,trough,steamshouldopentheopenpipe,completetheclosedvalve.StartingprocessofdesulfurizationsectionSequenceofeventsmediaoperationpoints1,thepersonnelfamiliarwiththedesulfurizationprocessflowchart2,readytostart1,gaswaterfilledwithwater;2,thepumpbeforethepipefilterclean;3,thevalveclosed;4,gaspipelineairtighttestqualified;5,equipmentinstandbystate.3precoolingtowerstarts4desulfurizationsystemstarted5sulfurfoamsystemstarts6afterthestartoftheadjustmentofprecoolingtowergastemperatureadjustmentandcontrol;desulfurizationliquidtemperatureregulationandcontrol.7,starttheaccidentplan,powerfailure-stopthepump,turnoffthepumpinletandoutletvalve,topreventliquidflow,overflow.Water-stoppump,preventmechanicalsealburnout.8endStartingpreparations1thegassealisfullofwater2cleanthefilteronthepipebeforethepump3valveclosed4gaspipelineairtighttestqualified5theequipmentisinstandbyStart-upofprecoolingtower1feedwatercirculatingwaterandlowtemperaturewater.2circulatingammoniawaterisaddedtotheprecoolingtower.Whenlevel2m,stopaddingwater.3precoolingtowerairdisplacement,throughgas.4startthecoolingtowercirculatingwaterpump.Coolingwatercycle:precoolingtower-pump-cooler-precoolingtower.5coolingwater,water,sewage.Theresidualammoniawaterpipelinesuppliessurplusammoniawaterandiscooledbyacooler,andthentheprecoolingtowerisusedtoadjusttheinfluentquantityandpreventoverflow.6regulatecirculatingcoolingwaterandtemperature.Controlthetemperatureofthegasouttowerat24--25centigradeDesulfurizationsystemstarted1draintankwith80%waterlevel.2regenerationtowerwaterlevel70%.3reactiontankplussoftwater1/3level4,thebottomofthedesulfurizationtowerfilledwithsoftwater5regenerationtowerlevelregulatorisminimized.6,desulfurizationtowerairreplacement,gasdelivery.7pluscatalyst8wayregenerationtowercompressedair9startthedesulfurizationliquidcirculationpumptothedesulfurizationliquidregenerationtower.10,openthetopofthedesulfurizationtowerfeedvalvegroup,thedesulfurizationfluidtoformacycle.Reactiontank--pump--regenerationtower--desulfurizationtower--reactiontank.Defoamingin11reactiontank.12detectionpluscatalyst.24hourslater,whentheamountofammoniareached5g/l,thecatalystwasaddedtothenormalvalue.Sulfurfoamsystemstarts1,adjusttheliquidleveladjustmentdevice,sulfurfoamselfflowingintothefoamtank.Whenthesuspendedsulfurreaches1.5g/l,thereactiontankisadjusted.Therefluxreactiontank.2startthefoampump,supercentrifuge,sulfurfoam,solid-liquidseparation.Startwhensulfurfoamreaches2500mm.The3sulfurfoamsystemformsacycle.Theregenerationtower-foamtank-foampump-Super-liquid-liquidtankcentrifugepump-reactor-regenerator.AmmoniumsulphatesectionjointcommissioningprocessSequenceitem,timelimit,controlpointTestofcirculatingwatersystemthroughwater1checkthewatersupplyandreturnpipeandconfirmtheirrigation.2makesurethecirculatingpumpisrunningproperlyandthevalveisclosed3steamammoniadistributortwo,watertestoperation,waterclosedvalve4,wastewatercoolertwo,watertestoperation,waterclosedvalveTestrunofindustrialwatersystem1checkthewatersupplyandreturnpipeandconfirmtheirrigation.2makesurethepumpisrunningproperlyandthevalveisclosed3,twocentrifugaloilcoolerwatertestrun,closedvalveafterwater4wastewaterpumptestrun,waterclosedvalve5motherliquidcirculationpumptestrun,waterclosedvalve6smallmotherliquidpumptestrun,waterclosedvalve7crystallizationpumpwatertestoperation,closedvalveafterwater8self-primingpump,watertestrun,closedvalveafterwater9allthewaterpipesinthewatersaturatedbodyaretestedbywater,andthevalvesareclosedafterpassingthroughwater10,saturatedairdrainpipetest,afterthewaterclosedthevalve11fogwaterheaterpipewatertest,waterclosedvalveSteampipetestrun1checkthesteampipeandconfirmtheflushing.2makesurethemainpipeiscleanedandthevalveisclosed3heatingcoil,steamclampsleeve,steamconnectingpipesteamtoconfirmtheamountofsteamshouldbelimitedtotheminimumlimit4leadingtothecleaningoftheequipment,thepassageofthesteamtoconfirmtheamountofsteamshouldbelimitedtotheminimumlimit5,themainsteamvalveslightlyopen,steampipe,openthetube,trap,watchthepressuregauge,todeterminethesteamsituation6openthevalveoneachbranchpipe,steamthroughtheheatingtube,checkthevalveswitchaction7passthesteamtesttothetowerandtrough,openthedrainpipe,turnoffthevalveafterthesteam8steampipetemporaryconnectionsteamtest9steamtestoftrap10closetheammoniumsulphatesectiononthemainsteampipevalve11afterthecoolingofthepipe,turnoffallthevalvesonthesteampipeThetestrunammoniumsulfatemotherliquorcirculationsystem1pipeandequipmentcheck,confirmpurge,valveclosed2openandrelevantequipmentandpipingsystemfordischargepipevalveofmotherliquorofammoniumsulfate3temporarypipestothesaturator,fullofgroove,groove,highsulfatecrystallizationtankwater5startthemotherliquorcirculationpump,pump,pumpsmallliquidcrystallinegroove,thecrystallizationtankfullobservationoffullflowandliquidlevel6afterthepipelineisconfirmed,startthecentrifugeandopenthevalvefromthecrystallizertothecentrifugeline7normalwaterpipingsystemconfirmtheammoniumsulfatemotherliquor8closethevalvefromthecrystallizertothecentrifugelineandstopthecentrifuge9,stopmotherliquidcirculationpump,crystalpumpandsmallmotherliquidpumpinturn10confirmtheflowofmotherliquorofammoniumsulfatesystem11opentheventpipeofeachpipeanddrainthewaterintotheventtank12whentheventtankhasacertainlevel,starttheself-primingpumpandstopthepumpafterpassingthroughthewater13confirmthewater,theequipment,pipeemptying,closedthevalve.AmmoniumsulfateplantequipmentcommissioningCombinedtestrunprocessoffinalcoldcleaningbenzeneprocessSequenceitem,timelimit,controlpointCirculatingwaterpipelinetestrun1checkthewatersupplyandreturnpipeandconfirmtheirrigation.2makesurethepipeisrunningproperlyandthevalveisclosed3thewatertestofcirculatingwatercooleraresequentiallyopenthemainvalve,openthecirculatingwatercoolerexhaustvalveentrance,closetheexhaustvalve,openthecirculatingwatercoolerentranceventvalve,confirmthroughwater,closetheventvalveopencooler;circulatingwateroutletvalve,confirmedthroughwater.4closethevalvesCommonsystemlowtemperaturewaterpipetestrun1opentheinletvalvethroughthewater,opentheexhaustvalve,exhaust,closetheexhaustvalve.2opentheventvalve,confirmthewaterandclosetheventvalve.3makesuretheoutletvalveisthroughthewater.4closethevalves.0.4--0.6MPasteampipetestrun1pipeinspection,confirmcleaning,valveclosed.2openthebranchpipevalve,steamthroughtheheatingtube,switch,checkthesteamvalve.3openthecoolingtower,drainpipe,steamtest,andclosethesteamvalveafterqualification.4openthebenzenewashingpipe,passthesteamtest,andclosethesteamvalvewhenitisqualified.5pairsofsteamtraptest.Openthetrapbeforethereleaseofthevalve,toconfirmthesteam,openthetrapbeforeandafterthevalve,toconfirmthehydrophobicnormal,closedthevalve.6closeallvalvesonthesteampipe.Finalcoolingcyclewatertestofprocesssystem1pipeinspection,confirmcleaning,valveclosed.2makesurethefinalcoolingtowernozzleisremoved3openthefinalcoolingtowerexhaustvalve4usehydranttoaddwaterleveltolowerendoffinalcoolingtowerto80%5startthelowercyclefluidpumpandcycle.Lowerendofendcoolingtower--lowercirculatingliquidpump--lowersectioncirculatingwatercooler--lowerendofendcoolingtower.6watertestofeachsectionofcirculatingwater7tophenolcyanogensewagetreatmentstationwatertest8switchthelowercirculationpumpthroughwatertest9testthewaterattheupperendofthefinalcoolingtower,payattentiontothechangeoftheliquidlevelinthelowersection,preventtheevacuation,observethechangeoftheupperlevel10whentheupperliquidlevelreaches80%,stopthecirculatingliquidpump,11startuptheuppercirculationliquidpump,andthenhittheuppersectionofthecirculationcoolingtower,theuppercirculationliquidpump,theuppercirculationwatercoolerandthefinalcoolingtower12toammoniumsulphatesectionammoniawatertestdevice13stopuppercirculationwaterpump14emptyingtheremainingwaterinthetowerandtheheatexchanger15closethevalve16duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Testoperationoffinalcoolingbenzenelyesystem1pipeinspection,confirmcleaning,valveclosed.2tothebasetankfilledwithwater,theliquidlevelis3M3startthelyepumpandconfirmthewater4confirmthenormaloperationofthepumpthroughthepumppressuregauge.5commissioning,thealkalitankresidualwaterventvalveisclosed.6duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Washwaterpipecommissioning1pipeinspection,confirmcleaning,valveclosed.2makesurethescrubbernozzleisremoved3openthebenzenetowerexhaustvalve4fillthescrubberwithahydrant.Thelevelrisesto80%5starttherichoilpump,confirmthenormaloperationofthepumpthroughthepumppressuregauge,andconfirmthewaterthrough.6automaticallyadjustthepipelinetotestthewater7afterthetestrun,theremainingwaterinthebenzenewashingtowerwillbeemptiedandclosed.8duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Testrunofelectricvalveingaspipelinesystem1gaspipelinevalveinstalledontheshaft,dustcleaningiscompleted.2accordingtotheuseofelectricvalvemanualrequirementsforpreparatorywork3trialoperationaccordingtotheproductinstruction4accordingtothenationalstandardGB/T13927--1992andproducttechnicalperformancestandardsforinspectionCombinedtestrunprocessofcrudebenzoldistillationsectionSequenceitem,timelimit,controlpointPublicsystemcommissioningproject1circulatingwater2lowtemperaturewater3industrialwater4lowpressuresteam5netcokegasProcesssystemcommissioningproject1oilsystem2crudebenzolsystem3residueoilsystem4evacuationsystem5separatewatersystemCirculatingwatertestrun1checkthewatersupplyandreturnpipes,valves,meters,andconfirmtheirrigation.2makesurethepipeisrunningproperlyandthevalveisclosed3ventattheendofthepipetoremovedebris.4circulatingwatermainpipethroughwater5circulatingwaterpipethroughwater,Watertestofeachcooler6wateremptying,closingthevalve7duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Lowtemperaturewatertestrun1checkthewatersupplyandreturnpipes,valves,meters,andconfirmtheirrigation.2makesurethepipeisrunningproperlyandthevalveisclosed3ventattheendofthepipetoremovedebris.4testoperationoflowtemperaturewatermainpipeline5twoleancoolerwatertest6watercoolingtestofcrudebenzolcondenser7wateremptying,closingthevalve8duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Industrialwatertestrun1checkthewatersupplyandreturnpipes,valves,meters,andconfirmtheirrigation.2makesurethepipeisrunningproperlyandthevalveisclosed3ventattheendofthepipetoremovedebris.4watertestofwatersealtankS-42045waterpumpmechanicalsealwatertest6waterflowtestofinstrumentandmeter7wateremptying,closingthevalve8duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Trialrunoflowpressuresteamsystemforcrudebenzoldistillation1steampipeinspection,confirmcleaning,closethevalve,theamountofsteamshouldbelimitedtotheminimum2pairsofsteampipes,heatingpipes,cleaning,checkthevalveswitch3opentheequipmentdrainpipeandcarryoutthesteamtesttoeachtowerandtrough4temporarypipeconnectionsteamtest5steamtestoftrap6watertankS-4204,tubefurnaceF-4201,naphthalenesolventoiltankT-4206,residuetankT-4207andheatersteamtestarecarriedoutsuccessively7steamcleaningtestofsteamcleaningpipeandsteambushing8steamtubefurnaceleadsarerespectivelyinsertedintoK-4201andK-4202regeneratorreflux9removecondensateandclosethevalveNetcokegaspipelineinspection1forexamination,noventilation2afterthecokeovenstarts,afterhavingthecokeovengas,theventilationconfirmationCrudebenzoldistillationoilsystem1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2openthedrainvalveoftheequipment3temporarilytakenoverbyoiltank,oiltankventtotherich,thenewoilgroovesealwatersealheighttotheheightofthegroove50%,liquidlevelmonitoring,timelyreplenishment4turnontheregeneratoroilrichinletvalve5opentheinletandoutletvalveleanhotreflux6turnonthesuctionvalveoftheheatpooroilpump7opentheinletandoutletvalvesoftheoilrichpipeofthecrudebenzenecondensingcooler,thepipesideexhaustvalveandtheshellsideexhaustvalveTheexhaustvalve8isopenandrichoilheatexchangerrichoilpipelineandthepipelineoutletvalve,leanintothetubesideoftheexhaustvalve,theshellside9openthevalvealeanoilcooler10openthevalvetwooilcooler11opentheoilrichinletvalveandoutletvalveofthetubefurnace12openthesuctionvalveoftherichoilpump13,starttherichoilpump,tothecrudebenzenecondensationcooler,therichandpooroilheatexchanger,thetubetypefurnaceandtheregeneratorwatertest14turnofftherichoilinletvalveaftertheheaterhaspassedthroughthewater15opentheoilrichbenzenetowerinletvalve16whentheliquidlevelreaches80%whenreflux,refluxoutletvalveopenlean17totheoilheatexchanger,heatoilthroughthewatertankbottombenzenetower18whenbenzenetowerbottomheatleantanklevelreaches50%,startthehotleanoilpump19totwo,aleanleancoolerwatercooler20carryontheconversionoperationofeachpump21stopthepumpandclosethevalve22duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Watertestoperationofcrudebenzolsystem1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2makesurethatwatertankofcrudeoiltankcanbecarriedoutthroughwater3openthedrainvalveoftheequipment4ofthecrudeS-4202waterseparator,wateroverflowuntil,atanytime5openthecrudebenzeneinletvalveofthecrudebenzenerefluxtank,Acrudebenzolseparatorisinjectedintothetank6openthecrudebenzeneinletvalveofcrudebenzeneintermediatetank,andpourwaterintothetankwithacrudebenzenerefluxtank7starttherefluxpumptowaterbenzene,benzenetower8startthecrudebenzolproductpumpandflowthroughthecrudeoiltankofthecrudeoilstoragetank9aftertheoperationisstable,thepumpsareswitched10stopthepumpandclosethevalve11duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Testrunofresidualoilsystem1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2makesurethatthetartankcanbecarriedthroughthewatertank3openthedrainvalveoftheequipment4makesuretheregeneratorlevelreaches80%5openthenaphthalenesolventoiltank,theinletvalveoftheresidualoiltank,andtheoutletvalveoftheresidualoiloftheregenerator6waterthroughnaphthalenesolventtankandresidualoiltank7whenthenaphthalenesolventoiltankandresidualoiltanklevelreaches50%8,startresiduenaphthalenesolventpump,tothedepotsectionwater9aftertheoperationisstable,thepumpsareswitched10stopthepumpandclosethevalve11duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Oildrainsystemthroughwater1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2openthedrainvalveoftheequipment3watersealforoilundergroundtank,theliquidlevelreaches50%4starttheoilsumppump,anddrainthetankthroughthetank5stopthepumpandclosethevalve6duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Crudebenzoldistillationseparateswatersystemthroughwater1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2makesurewhetherthegaspipelinecanbecarriedthroughwater3ofthebenzenetoweroil-waterseparatorwaterlevelreached50%.Theseparationofthewateroutletvalve4openoil-waterseparator,theseparatorofcrudebenzenebenzenetower5tocontrolseparator,crudebenzeneseparationwater,undergroundemptyingtroughthroughwater6whenthecrudewaterisseparated,thewaterleveloftheundergroundventingtankreaches50%7startcrudebenzeneseparationwater,undergroundventtank,liquidpump,tosuctiongaspipelinethroughwater8stopthepumpandclosethevalve9duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.WorkingprocedureofcombinedtestrunindepotsectionSequenceitem,timelimit,controlpointOildepottestrunlistPublicsystemcommissioningproject1circulatingwater2lowtemperaturewater3industrialwater4lowpressuresteamProcesssystemcommissioningproject1tarsystem2crudebenzolsystem3washsystem4concentratedacidsystem5concentratedalkalisystemIndustrialwaterpipelinethroughwater1checkthewatersupplyandreturnpipes,valves,meters,andconfirmtheirrigation.2makesurethepipeisrunningproperlyandthevalveisclosed3ventattheendofthepipetoremovedebris.4,opentheconcentratedacid,concentratedalkalideliverypump,sealingirrigationwithindustrialwater,water,watervalve5makesurethewaterisclosedandthevalveisclosedTestrunoflowpressuresteamsystem1steampipeinspection,confirmcleaning,closethevalve,theamountofsteamshouldbelimitedtotheminimum2pairsofsteampipes,heatingpipes,cleaning,checkthevalveswitch3temporarypipeconnectionsteamtest4steamtestoftrap5successiveoftartankheater,oilstoragetankheater,concentratedalkalistoragetankheater,allsteamcleaningpipe,steampipe,casingwithsteamtest6makesurethesteamvalveisclosedafterthesteamisturnedoff7removecondensateandclosethevalveWatertestoftarsystem1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2openthedrainvalveoftheequipment3,tartankwaterinjection,waterlevelreached50%,monitoringtheliquidlevel,waterreplenishmentatanytime4openthetartank,tarinletvalve5openthesuctionvalveoftarloadingpump,bypassvalveoftarreturnpipeandpressurecontrolvalve6startthetarloadingpumpandopenthetarreturnpipedrainvalve7tothetartankthroughthewater,toensurethatthebreathingvalveactionsensitive8openthevalveaftertheregulatingvalve,thevalvebeforetheadjustment,turnoffthebypassvalve9makethewaterreturntothetartankthroughtheregulatingvalve10adjusttheactionoftheregulatingvalveaccordingtothepressuregauge11openthevalveonthetarloadingtruck12causewatertoflowoutofthetarloadingarm13observetheactionofthepressuregaugeandtheregulatingvalve14closethevalveonthetarloadingtruck15makethewaterflowintothetankfromthereturnchannelwheretheregulatingvalveislocated16observetheactionofthepressuregaugeandtheregulatingvalve17,afterrunningstable,pumpconversionoperation18stopthepumpandclosethevalve19openthedrainvalveatthetopofthesidewallofthetartank20continuetoinjectwaterintothetankuntilthewaterflowsofar21openthesidewalldrainvalveinturnfromtoptobottom,sothatthewaterflowsfromthedrainpipetotheseparationwatertank22keeptheminimumdrainpipefulllevel23whentheseparationwaterlevelreaches50%,starttheseparatewatertank,theliquidpump24,tothecolddrumsectionmechanizedammoniaclarificationtankthroughthewater25whenthedeviceisthroughthewater,confirmwhetherthebreathingmethodissensitive26stopthepumpandclosethevalve27duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Watertestoperationofcrudebenzolsystemincrudeoildepot1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2openthedrainvalveoftheequipment3forcrudebenzenetank,benzeneemptyingtroughwaterinjection,waterlevelreached50%,monitoringtheliquidlevel,watersupplyatanytime4opencrudebenzenetank,crudebenzeneinletvalve5opentheoiltankoilinletvalve6openthesuctionvalveofcrudebenzeneloadingpump,by-passvalveofcrudeoilreturnpipeandpressureregulatingvalve7startthecrudebenzeneloadingpump,openthecrudebenzenereturnpipevalve,andpassthewaterthroughthecrudebenzenetank8tothecrudehydrogentankthroughthewater,toensurethattheactionofbreathingvalvesensitive9openthevalveaftertheregulatingvalve,thevalvebeforetheadjustment,turnoffthebypassvalve10makethewaterreturntothecrudetankthroughtheregulatingvalve11adjusttheactionoftheregulatingvalveaccordingtothepressuregauge12openthevalveonthecrudebenzolloadingtruck13makewaterflowoutofthecrudeoilloadingarm14observetheactionofthepressuregaugeandtheregulatingvalve15shutoffthevalveonthecrudebenzolloadingtruck16,thewaterfromthecontrolvalvelocatedinthegrooveintothecrudebenzenetank17observetheactionofthepressuregaugeandtheregulatingvalve18,afterrunningstable,pumpconversionoperation19stopthepumpandclosethevalve20keepthelevelofthecrudetank.21openthedrainvalveatthebottomofthecrudeoiltank,sothatthewaterflowsintothebenzeneventtankfromtheemptydrainpipe22whentheliquidlevelreaches50%benzeneemptyingtank,startthebenzeneemptyingtankliquidpump,towashwatertank23towashoiltankthroughthewater,confirmthebreathingvalvesensitiveaction24stopthepumpandclosethevalve25duringoperation,checkandconfirmthedischargepressure,bearingtemperatureandnoiseofeachpump.Washwatersystemrunninginoildepot1checktheequipmentandprocess,confirmthecleaningofthepipeline,andclosethevalve2openthedrainv