原油乳狀液破乳劑-電場聯(lián)合作用機理研究.pdf

1、火慶石油學(xué)院順l：研究生學(xué)位論文StudiesonMeehanismofCombinationofDemulsifierandElectricFieldDemulsificationAbstraetThestabilityofcrudeoilemulsionandpreparingparameterswerestudiedinthispaperRotatingrateandemulsifyingtimeweredeterminedtop

2、reparecrudeoilemulsionsStabilityofcrudeoilemulsionsdecreasedaswaterconductivityandtemperatureincreasedAndtherheologyofthesecrudeoilemulsionsWaSalsostudiedbyusingBrookfieldDVIIViscometerinthispaperTheresultsdemonstratedth

3、atintherangeofshearratestudiedthecrudeoilemulsionbehavedaSBinghamfluidwhentemperatureWaSlowerthan50“C，andthecrudeoilemulsionbehavedasNewtonianfluidwhenthetemperatureishigherthan50℃Thetheoreticalequationfordescribingtherh

4、eologyofcrudeoilemulsionwasfoundedUsingtheabovecrudeoilemulsions，mechanismoftentypesofdemulsifierswithdifferentstructuressuchasAR36WasdiscussedTheresultswerethatdemulsifiersAR36，AE9901andTAl031weremoreeffectiveonthesecru

5、deoilemulsionsMagnitudesequenceofdehydrationratioofdemulsifierswithdifferentstructuresvaried∞thewaterconductivityincrudeoilemulsionschanged；andcombinationofdemulsifiersWasbenefittodemulsifycrudeoilemulsionsMoreoverthemec

6、hanismofdemulsifierswithdifferentstructuresWaSthatthelocationsofPOandEOgroupsindemulsifierschainsandthenumberofPOandEOgroupsweredifferentfordifferentstructuresdemulsifiers，resultingindifferentdehydrationratioAsforbranche

7、dchaindemulsifiers，interspaceofmoleculeswassmallerthanthatofstraightchaindemulsifiers，opportunitythatactivesubstancesenteredinterspacetoformmingledadsorbingfilmWaSless，whichcoulddecreaseintensityofoil—waterinterracialfil

8、minagreaterextentSothecrudeoilemulsionsweredernulsifiedeaSilyFinallyregulationsofcombinationofdemulsifieIandelectricdehydrationwerediscussedusingDPY2ADemulsifierandElectricDehydratingPerformanceMeaSurerItshowedthatthelow

9、erthewatercutofcrudeoi!emulsions，thesmallerthedehydrationratio；effectivenessofcombinationofdemulsifierandelectricfieldwasbeRerthanthatofsingleelectricfield，andthereWaSaoptimumdemutsifierconcentrationUsingCIR100Interracia

10、lRheometertomeasureinterfacialviscositymechanismofcombinationofdemulsifierandelectricfieldWaSthatdemulsifiermoleculesadsorbedatoilwaterinterface，displacedthenaturalemulsifiermolecules，whichdecreaSedinterracialviscosityth

11、uscoalescingresistancewasreduced；ontheotherhand，underelectricfield，poresappearedatinterfacialfilm，whentheintensityofelectricfieldsurpaSsedthecriticalvalue，theinterfacialfilmruptured，andwaterdropletsbegantocoalesceInACele

12、ctricfielddipoledcoalescenceandoscillatingcoalescencefunctionedmainlyandinDCelectricfielddipoledcoalescenceandelectrophoresiscoalescenceactedchieflyKeywords：crudeoilemulsion；stability；theology；structuresofdemulsifiers；el