简介：Theoxidationbehaviorofthreebiodieselsofdifferentorigins,viz.rapeseedoilderivedbiodiesel,soybeanoilderivedbiodieselandwasteoilbasedbiodiesel,weretestedonanoxidationtester.Thechemicalcompositionsofthebiodieselswerecharacterizedbygaschromatography.Thereafter,thestructuraltransformationoffattyacidmethylester(FAME)ofthebiodieselswasanalyzedbyaninfraredspectrometerandanultravioletabsorptionspectrometer.TheresultsdemonstratedthattheoxidationbehaviorofbiodieselsofdifferentoriginswascloselyrelatedtothecompositionanddistributionofFAMEs.HigherconcentrationofunsaturatedFAMEwithmulti-doublebondsexhibitedpooreroxidationresistance.Furthermore,cis-transisomerizationtransformationoccurredintheunsaturatedFAMEmoleculesandconjugateddouble-bondproducedduringtheoxidationprocessofbiodiesel.Greatercis-transvariationscorrespondedtodeeperoxidationdegree.ThehigherthecontentofunsaturatedFAMEwithmulti-doublebondsinabiodiesel,themoretheconjugateddoublebondswasformed.

简介：Inordertomeettheurgentneedforreducingolefincontentincrackednaphtha,theinfluenceoffeedstockcharacteristicsontheolefincontentwasdiscussed.ThedifferenttypesandperformanceofcatalystsdevelopedbyRIPPwereintroduced.Moreover,someeffectiveoperationapproachesincommercialunitswerepresentedtoserveasareferencetotherefinersforcatalystselection.

简介：以便为汽油质量遇见需求升级，SINOPECAnqingBranch同伴与MGD技术翻新了DCC单位并且与MIP技术装备了FCC单位。当为他们的经济好处的最大化集中于他们的特定的特征和方法时，这篇文章以技术和经济在theMIP和DCC/MGD过程的商业申请上做分析和比较。

简介：这篇文章总结进程单位的精力消费和在最近的年里构造或修理的10个Mt/a类精炼厂的全面精力消费。节省在这些精炼厂的设计采用的措施的精力被分析并且讨论。最后，这篇文章也做评价并且以后在精炼厂为能量守恒在目的上提出建议。

简介：TheSargentdividingwallcolumncanimplementfourproductsseparationsequencesinonecolumnbasedonFullyThermallyCoupledDistillationColumn.TheinitialdesignparametersarerequiredforthedesignoptimizationordynamiccontroloftheSargentdividingwallcolumn,andinordertomaketherigoroussimulationoftheSargentdividingwallcolumnmoreconducivetoconvergence,atencolumnmodelforcomplexSargentcolumnisestablishedinthispaper,andtheshortcutdesignmethodofthismodelisproposed.TheinternalminimumvaporandliquidflowareobtainedbytheUnderwoodequationsandthemassbalancemethodandtheV-minmethod.Theseparationfora4-componentshortcutmixtureofpentane,hexane,heptaneandoctanewasconsidered,whiletheinitialvaluesofdesignparametersandtheratioofvapor-liquiddistributionofeachcolumnwerecalculatedbyusingtheshortcutdesignmethodofatencolumnmodel.Andbycomparingtheshortcutcalculationswithrigoroussimulationresults,thepracticalityandreliabilityofshortcutcalculationswereverified.Thereasonforenergysavingwasanalyzedbasedonback-mixing.AvirtualheatexchangerisproposedtomaketheSargentdividingwallcolumnmoreenergyefficient.

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简介：<正>TherulesofMIPreactionsforcatalyticcrackingofsulfurcompoundsanditsinfluenceonthesulfurcontentintheMIPnaphthawerestudied.ThemamfactorsinfluencingthesulfurcontentintheMIPnaphthawerethoughttobethesulfurcontentoffeedstockandwerecloselyrelatedwiththeolefincontentofnaphtha.TakingintoaccountthecharacteristicfeaturesofMIPprocess,themethodsforreducingthesulfurcontentintheMIPnaphthawerecomprisedofdecreasingthesulfurcontentoffeedstockbyhydrotreatinganddecreasingtheolefincontentofnaphthathroughpromotinghydrogentransferreactions.Therefore,theEuroⅣcleangasolinewithlowsulfurcontentandlowolefincontentcouldbeobtaineddirectlythroughtheMIPtechnology.