重质油梯级分离新工艺的工程基础研究

619Vol161No1920109CIESCJournalSeptember2010,,,,,((),102249):,(),,,1kgh-110kgh-1,C5,,:160170,515;410510MPa;410415():200220,410415MPa,,,,:;;;:TQ028:A:0438-1157(2010)09-2393-08EngineeringbasicsofheavyoildeepstageseparatingprocessXUChunming,ZHAOSuoqi,LUChunxi,SUNXuewen,XUZhiming,EChenglin(StateKeyLaboratoryofHeavyOilProcessing,ChinaUniversityofPetroleum,Beijing102249,China)Abstract:Anumberofvacuumresidua(VR)inChinaandabroadwereseparatedbyusingsupercriticalfluidextractionandfractionationtechnology(SFEF).Itisshowedthatthepropertiesoftheobtainednarrowcutsdependonthesolventsolubility,bywhichtheasphalteneandmetalsareenrichedintheunextractableendcutsandthusthepropertiesofextractcutsgreatlyimproved1Anewprocessofheavyoildeepstageseparationisputforwardbasedonthediscovery1ResearchondeepstageseparationofDagangVRandLiaoheVRwascarriedouton1kgh-1and10kgh-1capacityunitwithn2pentaneassolvent1EffectsofsolventtofeedratioS/O,temperatureandpressureontheyieldandthepropertiesofthedeasphatedoil(DAO)wereinvestigatedandtheoptimizedprocessparametersweredeterminedasfollowing:extractiontemperaturewithin160170,pressure410510MPaandS/O(massratio)410415.Theappropriatesupercriticalsolventrecoveryconditionsweredeterminedinrangeoftemperatureof200220andpressure410415MPa1Thenovelaspectisthatdeoiledasphalt(DOA)aredischargedasfineparticlesbycouplingthesupercriticalextractionandsprayinggranulation1ThefluidizationpropertiesoftheDOApowdersweremeasuredalsofortransportationpurpose1Theresultsprovidethebasisforindustrialscale2upoftheheavyoildeepstageseparation1Keywords:heavyoil;supercritical;stageseparation;engineeringbasics2010-06-22,2010-06-25::(1965),,Receiveddate:2010-06-221Correspondingauthor:Prof1ZHAOSuoqi,sqzhao@cup1edu1cn,114,40%,,,(),,[123],[426]Brown2Ladner[7][829][10211],,(deasphaltedoil,DAO)(deoiledasphalt,DOA),,,,1,:();(),(,),(NiV)SNO,,,,,3:[1(a)][1(b)][1(c)]1(a),,,,:20%40%,,,,;,;,1(b),,60%,,,,,,,150gg-115%(),1(c)(DAO)493261,1(a)(b),1(c),,,,,,,,2,,/,,30,,,,,59329:,H/C,(CCR),(NiV);,,60%85%,,2(a)(d),,(NiV)SNO,70%50%90%(20%),3311,1kgh-1,3,,,,,,,,,,,6932613Fig13Schematicdiagramofcontinuousdeasphalteddevice1solventtank;2solventpump;3sidesolventpre2heater;4mainsolventpre2heater;5mixer;6residuepump;7residueheatingandmeasuringsystem;8extractiontower;9two2stageheater;10two2stageseparator;11pressureregulator;12heavydeasphaltedoilevaporator;13solventseparator;14solventcooler;15prillingtower,(),3,,(),,312,,,21585%,,41078%,,,,,,,(310),,,,,410,NiV,410,,,,,C5410415(),313410410610MPa160180,,,,,410510MPa,,510MPa160,410MPa510MPa,6185%919%,Ni3412gg-15414gg-1,Ni5215%2413%,NaCa,94%85%;170,410MPa610MPa,Ni410MPa510MPa,610MPa510MPa,,3141,410MPa,510MPa,2001165kgt-1,210,510MPa,210,,410MPa200,510MPa,79329:1Table1DAOandsolventmutualsolubilityundersupercriticalrecoveryconditionsPressure/MPaTemperature/DAOinsolvent/g(100gSol)-1SolventinDAO/g(100gDAO)-14102000115846915941021001035541734102200107884111251020011652251021001278351022001517347193210,410415MPa,:160170,515;410510MPa;410415():410415MPa,2002204411,180,,,,,,,,,[12213],,[14216],,4124,,;,,4,415MPa510MPa,4Fig14EffectofpressureonDOAparticlemorphology5SEM,,,,415510MPa,200250m,,,,C5,[17],,C5015%,413,01100130gcm-3,6,,893261164m,,,7,7Fig17SchematicdiagramofDOAparticlesconveyingdevice5(1),,(),(2)1kgh-110kgh-1,C5,,,(3),,,References[1]ZhaoSQ,KotlyarLS,WoodsJR,SparksBD,KungJ,ChungKH1Abenchmarkassessmentofresidue:comparisonofathabascabitumenwithconventionalandheavycrudes1Fuel,2002,81(6):7372746[2]ZhaoSQ,KotlyarLS,SparksBD,WoodsJR,GaoJS,ChungKH1Solidscontents,propertiesandmolecularstructuresofasphaltenesfromdifferentoilsands1Fuel,2001,80:190721914[3]ZhangZhangang(),GuoShaohui(),YanGuangxu(),ZhaoSuoqi(),SongLanqi(),ChenLibo().DistributionofpolymethylenebridgesandalkylsidechainsinDagangvacuumresidueasphalteneandSFEFtailingasphaltene1JournalofChemicalIndustryandEngineering(China)99329:(),2007,58(10):260122607[4]ShiTP,HuYX,XuZM,SuT,WangRA1Characterizingpetroleumvacuumresiduebysupercriticalfluidextractionandfractionation1Ind1Eng1Chem1Res1,1997,36(9):398823992[5]YangGH,WangRA1Thesupercriticalfluidextractivefractionationandthecharacterizationofheavyoilsandpetroleumresidua1JournalofPetroleumScienceandEngineering,1999,22(1):47252[6]ShiTP,XuZM,ChengM,HuYX,WangRA1Characterizationindexforvacuumresiduaandtheirsubfractions1EnergyFuels,1999,13(4):8712876[7]ChenWenyi(),LiuYongmin().Predictiononthestructuralgroupsofcokergatch1PetrochemicalTechnology(),1999,28(3):1852188[8]ZhaoSQ,XuZM,XuCM,ChungKH,WangRA1SystematiccharacterizationofpetroleumresiduabasedonSFEF1Fuel,2005,84(6):6352645[9]ZhaoSQ,XuZM,XuCM,ChungKH1Feedstockcharacteristicindexandcriticalpropertiesofheavycrudeandpetroleumresidua1JournalofPetroleumScienceandEngineering,2004,41(3):2332242[10]LiuYihong(),LuoYunhua().GroupcompositionandstructuralparametersofDagangvacuumresiduesnarrowfractions1JournalofPetrochemicalUniversities(),2003,16(3):42246[11]XuYan(),XuWeichi(),XuZhiming(),ZhaoSuoqi().Separationandevaluationofslurry2bedhydrocrackingbottomoilbasedonSFEF1ActaPetroleiSinica:PetroleumPr