Hysys培训模拟基础

AspenHysys第一章启动模拟主要内容：启动模拟模块介绍创建HYSYS模拟所必需的一些基本概念。在本章中定义3个气体物流，他们将用作气体加工厂的进料。另外，要在此学习怎样通过使用相图和Utilities工具确定物流的属性。学习目的1、HYSYS结构和界面2、定义流体包（物性包，组分，虚拟组分）3、修改/自定义单位集4、添加物流5、理解闪蒸计算6、使用物流公用工具（相图，属性表)7、自定义工作薄热力学方法PR：〉-271C，〈1000BarSRK-143C,359Bar半经验模型：CS（Chao–Seader)-18C–260,100BarGS(Grayson-Streed)-18C–425,200BarGS是在CS的基础上发展起来的尤其适合高含氢系统。采用Lee-Kesler方法计算系统的焓值。GS可用于高氢的加氢系统（CH4的含量30%mol）PRSV：可处理弱极性体系，可对油品含H2O,CH3OH,甘醇等体系进行严格3相闪蒸计算Twu-Sim-Tassone(TST):也是立方型状态方程。可用于处理原油系统或高度非理想系统KabadiDanner：是SRK方程的修正改进型。在烃-水系统的3相平衡方面有很大改善，尤其是在稀溶液方面。Sour-PR/SourSRK：考虑了碱（NaOH），羧基酸存在的体系，能够计算OH-、H+、HS-的离子浓度对CO2、H2S、和NH3溶液溶解度的影响。将状态方程和WilsonAPI-酸性模型结合起来，处理酸水系统EOSDescriptionBWRSThismodeliscommonlyusedforcompressionapplicationsandstudies.Itisspecificallyusedforgasphasecomponentsthathandlethecomplexthermodynamicsthatoccurduringcompressionandisusefulinbothupstreamanddownstreamindustries.GCEOSThismodelallowsyoutodefineandimplementyourowngeneralizedcubicequationofstateincludingmixingrulesandvolumetranslation.GlycolPPkgGlycolpropertypackagecontainstheTST(Twu-Sim-Tassone)equationofstatetodeterminethephasebehaviourmoreaccuratelyandconsistentlyfortheTEG-watermixture.KabadiDannerThismodelisamodificationoftheoriginalSRKequationofstate,enhancedtoimprovethevapour-liquid-liquidequilibriacalculationsforwater-hydrocarbonsystems,particularlyindiluteregions.Lee-KeslerPlocker：Thismodelisthemostaccurategeneralmethodfornonpolarsubstancesandmixtures.MBWR：ThisisamodifiedversionoftheoriginalBenedict/Webb/Rubinequation.This32-termequationofstatemodelisapplicableforonlyaspecificsetofcomponentsandoperatingconditions.Peng-Robinson：ThismodelisidealforVLEcalculationsaswellascalculatingliquiddensitiesforhydrocarbonsystems.SeveralenhancementstotheoriginalPRmodelweremadetoextenditsrangeofapplicabilityandtoimproveitspredictionsforsomenon-idealsystems.However,insituationswherehighlynon-idealsystemsareencountered,theuseofActivityModelsisrecommended.PR-Twu：ThismodelisbasedonPeng-RobinsonandincorporatestheTwuEoSAlphafunctionforimprovedvaporpressurepredictionofallAspenHYSYSlibrarycomponents.PRSV：Thisisatwo-foldmodificationofthePRequationofstatethatextendstheapplicationoftheoriginalPRmethodformoderatelynon-idealsystems.SourPR：CombinesthePRequationofstateandWilson'sAPI-SourModelforhandlingsourwatersystems.SourSRK：CombinestheSoaveRedlichKwongandWilson'sAPISourModel.SRK：InmanycasesitprovidescomparableresultstoPR,butitsrangeofapplicationissignificantlymorelimited.Thismethodisnotasreliablefornon-idealsystems.SRK-Twu：ThismodelisbasedonSRKandincorporatestheTwuTwu-Sim-Tassone：ThismodelusesanewvolumefunctionforimprovedliquidmolarvolumepredictionsformidrangeandheavyhydrocarbonsandincorporatestheTwuEoSAlphafunctionforimprovedvaporpressurepredictionofallAspenHYSYSlibrarycomponents.ZudkevitchJoffeeModificationoftheRedlichKwongequationofstate.Thismodelhasbeenenhancedforbetterpredictionofvapour-liquidequilibriaforhydrocarbonsystems,andsystemscontainingHydrogen.ChienNullProvidesaconsistentframeworkforapplyingexistingActivityModelsonabinarybybinarybasis.ItallowsyoutoselectthebestActivityModelforeachpairinyourcaseExtendedNRTL：ThisvariationoftheNRTLmodelallowsyoutoinputvaluesfortheAij,Bij,Cij,Alp1ijandAlp2ijparametersusedindefiningthecomponentactivitycoefficients.ApplythismodeltosystemswithawideboilingpointrangebetweencomponentswhereyourequiresimultaneoussolutionofVLEandLLE,andthereexistsawideboilingpointrangeorconcentrationrangebetweencomponents.GeneralNRTL：ThisvariationoftheNRTLmodelallowsyoutoselecttheequationformatforequationparameters:and.ταApplythismodeltosystems:withawideboilingpointrangebetweencomponents.whereyourequiresimultaneoussolutionofVLEandLLE,andthereexistsawideboilingpointorconcentrationrangebetweencomponents.Margules：ThiswasthefirstGibbsexcessenergyrepresentationdeveloped.Theequationdoesnothaveanytheoreticalbasis,butisusefulforquickestimatesanddatainterpolation.NRTL：ThisisanextensionoftheWilsonequation.Itusesstatisticalmechanicsandtheliquidcelltheorytorepresenttheliquidstructure.ItiscapableofrepresentingVLE,LLE,andVLLEphasebehaviour.UNIQUAC：Usesstatisticalmechanicsandthequasi-chemicaltheoryofGuggenheimtorepresenttheliquidstructure.TheequationiscapableofrepresentingLLE,VLE,andVLLEwithaccuracycomparabletotheNRTLequation,butwithouttheneedforanon-randomnessfactor.vanLaar：Thisequationfitsmanysystemsquitewell,particularlyforLLEcomponentdistributions.ItcanbeusedforsystemsthatexhibitpositiveornegativedeviationsfromRaoult'sLaw,however,itcannotpredictmaximaorminimaintheactivitycoefficient.Thereforeitgenerallyperformspoorlyforsystemswithhalogenatedhydrocarbonsandalcohols.Wilson：FirstactivitycoefficientequationtousethelocalcompositionmodeltoderivetheGibbsExcessenergyexpression.Itoffersathermodynamicallyconsistentapproachtopredictingmulti-componentbehaviourfromregressedbinaryequilibriumdata.HowevertheWilsonmodelcannotbeusedforsystemswithtwoliquidphases.VapourPressureModelsVapourPressureK-valuemodelsmaybeusedforidealmixturesatlowpressures.Idealmixturesinclude