WO型原油乳化液高频电场破乳特性实验陈家庆

694yqcy.paperopen.comTransportation&Storage20176366W/O/1000-8241201706-0694-083W/OTurbiscan/3098.7/Turbiscan720W/OTurbiscanTE86Adoi10.6047/j.issn.1000-8241.2017.06.0132017-3-1615:32:50ficationcharacteristicsofwater-in-oilemulsionsinhigh-frequencyelectricfieldCHENJiaqing,HUANGSongtao,SHENWeiwei,PANZehao,ZHANGLong,ZHANGBaoshengSchoolofMechanicalEngineering,BeijingInstituteofPetrochemicalTechnology/BeijingKeyLaboratoryofPipelineCriticalTechnologyandEquipmentforDeepwaterOil&GasDevelopmentAbstract:Inthispaper,electrostaticdemulsificationanddehydrationexperimentswereconductedonwater-in-crude-oilemulsionswiththreekindsofwater-cutsbasedontheindependentlyestablishedexperimentalsystemforelectric-fielddemulsificationanddehydrationwhoseelectricfieldparameters(waveformsespecially)areadjustable.Andtheeffectsofelectric-fieldwaveform,frequency,voltageandwatercutondemulsificationcharacteristicsofwater-in-crude-oilemulsionswereinvestigatedsystematicallybytakingdehydrationrateandTurbiscanstabilityindex(TSI)astheevaluationcriterion.ItisindicatedthatACsquarewaveisbetteratdemulsificationanddehydrationthanthesinusoidalwave,trianglewaveandDCpulsewave.Astothehigh-frequency/high-voltageelecticalfieldwithACsquarewave,theoptimumelectricalfrequencyandelectricalvoltagevaryslightlywithwatercut.Thedehydrationrateofwater-in-crude-oilemulsionscorrespsondingtotheoptimumelectricfieldparameterscanbeupto98.7%whenthewatercutis30%.Whencrudeoildehydrationpowerunitisdeveloped,ACsquarewavewithhighfrequency/highvoltageshallbeadoptedandupperlimitofelectricfieldfrequencydon’thavetobetoohigh.Atthesametime,TSIcanbetakenasareliablequantitativeindexforevaluatingthereasonableelectric-fielddemulsificationparameters.(7Figures,20References)Keywords:water-in-oilemulsions,electrostaticdemulsification,Turbiscanstabilityindex(TSI),ACsquarewave,electricfieldparameter695yqcy.paperopen.comTransportation&Storage[13]2006SINTEFW/O40[4]2010Berg3[5]2009SjöblomMCR-301W/O[6]20145kV/cm[7]2012ShahhosseiniVOFDipole-Induced-DipoleDID5////DC31Hz5Hz50Hz51kV/cm1.5kV/cm2kV/cm2.5kV/cm3kV/cmDC[8]2014W/O/AC500Hz[9]3020Hz2000Hz[10]/W/O4kHz[1112]W/OW/O/[1316]W/O11.1W/OGWInstekFunctionGeneratorGFG-3015GWInstekOscilloscopeGOS-62020MHzTrekModel10/40A-HS1W/O696yqcy.paperopen.comTransportation&Storage2017636633W/O10mm2280mm15mmNaCl[17]GWInstekFunctionGeneratorGFG-30151000/////GWInstekOscilloscopeGOS-6201.21W/O10150mL802hSpan801.5gFLUKO19000rpm3min8016.7mL20min10g/L150mL7030min211min3TurbiscanLABExpert20mL2/3301min130min50mm880nm135[1819]TurbiscanEasysoftTurbiscanTurbiscanStabilityIndexTSI45min=V1V21001V1mLV2mLTurbiscanLABExpert5///0.05kHz2kHz2.5kHz3kHz3.5kHz4kHzVP4.5kV5kV5.5kV6kV6.5kV7kVW/O1020301W/O697yqcy.paperopen.comTransportation&StorageW/OW/O22.110W/O4224acbd2kHz3a96.730minTSI5.029.3107kV7kV2kHz1minTSI3bW/OTSIW/OpositiveDielectrophoresisp-DEPnegativeDielectrophoresisn-DEP4W/OW/O698yqcy.paperopen.comTransportation&Storage20176366MortezaHosseiniFdi[20]Fdi=πd3cd-cE22d+2cRln2Da-Di2dmmcC2/Nm2cdS/mDammDimmRmmEV/mFdiEVP4VP0.707VP0.577VP0.707VP32.2W/O200.05kHz2kHz2.5kHz3kHz3.5kHz4kHz5a1minTSI5b50Hz30minTSI1.66TSI0.47310%TSI4520%TSIaabTSIbTSI699yqcy.paperopen.comTransportation&Storage3.53kHzW/O97.3TSI13.83206kV2.3W/O304.5kV5kV5.5kV6kV6.5kV7kV6a1minTSI6bStokes305.5kV98.7TSI10.2118.95.5kV303.45kHz2.4102030W/OTSI2kHz/7kV3kHz/6kV3.5kHz/5.5kV37a31minTSI7b30630%TSI7TSIaabTSIbTSIW/O700yqcy.paperopen.comTransportation&Storage2017636698.7TSI31W/O101.15230W/O/98.72.4520kHz3TurbiscanLABExpertTurbiscanTSIW/O[1].[J].20073515358.CHENJQLIHYCHANGJYetal.Electricalfielddesignandcriticaltechnologiesofcrudeoildehydrationdesalting[J].ChinaPetroleumMachinery20073515358.[2].[J].2016353278284.LUHZHAOJDCHENJH.Theviscosityandstabilityvariationofheavyoilinanoilinwateremulsion[J].Oil&GasStorageandTransportation2016353278284.[3]MHATRESVIVACAUAVGHADIRIMetal.ElectrostaticphaseseparationAreview[J].ChemicalEngineeringResearchandDesign2015964177195.[4]LUNDGAARDLEBERGG.MethodanddeviceforinducingcoalescenceinemulsionstofacilitatesubsequentremovalofwaterfromtheemulsionNorwayWO2006/043819A1[P].20060427.[5]BERGGLUNDGAARDLEABI-CHEBELN.Electricallystressedwaterdropsinoil[J].ChemicalEngineeringandProcessingProcessIntensification2010491212291240.[6]LESAINTCSPETSØGLOMMWRetal.Dielectricresponseasafunctionofviscosityfortwocrudeoilswithdifferentconductivities[J].ColloidsandSurfacesAPhysicochemicalandEngineeringAspects2010369132026.[7]RODIONOVAGKELESOGLUSSJÖBLOMJ.ACfieldinduceddestabilizationofwater-in-oilemulsionsbasedonNorthSeaacidiccrudeoil[J].ColloidsandSurfacesAPhysicochemicalandEngineeringAspects20144486066.[8]MOHAMMADIMSHAHHOSSEINISBAYTM.Numericalpredictionoftheelectricalwaveformeffectonelectrocoalescencekinetic[J].ChemicalEngineeringResearchandDesign2013915904918.[9].[J].201534111517.WUZQLYUYLHELMetal.Experimentalstudyontheelectrostaticcoalescenceperformanceofelectricdehydratorwithhorizontalelectrodes[J].Oil-GasFieldSurfaceEngineering201534111517.[10]