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1、石油加工常识（Generalknowledgeofpetroleumprocessing）Whatisparaffinbasecrude?TheKvaluebetween12.1to13,containingmorethan50%alkanes,lowdensity,highwaxcontent,lesssulfurandresin,theoriginalproductionofstraight-rungasolineoctanenumberislow,thehighoctanesixteendiesel,lubricatingoilproductionclassbetterv
2、iscositytemperatureproperties,butthedewaxingoftheload,andtheheavyfractiontheresiduecontainingheavymetals,isagoodrawmaterialforcrackingWhatisintermediatebasecrude?TheKvaluerangesfrom11.5to12.1,whichisbetweenparaffinbasecrudeandnaphtheniccrudeoilWhatiscallednaphtheniccrudeoil?Containingcycloal
3、kanesandaromaticsare,highdensity,lowpourpoint,generalsulfur,colloidandasphaltenemoreWhatisthefunctionofthethreecurvesofcrudeoil?Thedistillationismainlyusedtocharacterizethequalityoftheproduct.Therealboilingpointdistillationismainlyusedforthecharacterizationofroommatefraction.Equilibriumvapor
4、izationismainlyusedinthedeterminationofvaporizationrateintheprocessofpetroleumprocessingWhatkindofcrudeoildoesDaqingoilbelongto?Lowsulfurparaffinbasecrudeoil,themaincharacteristicsofhighwaxcontent,highpourpoint,asphaltenecolloidheavymetalcontentsulfurcontentislowWhatarethecharacteristicsofth
5、eprimaryprocessingproductsofDaqingcrudeoil?Whentheinitialdistillationis200,theoctanenumberofthestraightrungasolineislow,thedensityislarge,thecontentofsulfur,gumandcarbonarehigher,andthelightfractionofthecrudeoilislessWhatcrudeoildoesShenglicrudebelongto?Shenglicrudeoilismediumsulfurcontainin
6、gcrudeoil,withsulfurcontentofabout1%,largedensity,sulfurcontent,gumcontentandhighcarbonresidue,andlightfractionofcrudeoilislessWhatarethecharacteristicsoftheprimaryprocessingproductsofShenglicrudeoil?Straightrungasolineoctanenumberis47to130,theinitialboiling,higharomaticscontentfraction,refo
7、rmingisgoodmaterial,aviationkerosenefractionofhighdensity,lowcrystallizationpoint,aromatichigh,poorcombustionperformance,dewaxingoilvacuumdistillateoilviscosityindexandlowviscositytemperaturepropertiesofvacuumresidueisgoodWhatisflashdistillation,si
