aspen单元模块

Model Icon Description Purpose Use ForMixer StreammixerCombines multiplestreams into onestreamMixing tees. Stream mixingoperations.Adding heat streams. Addingwork streamsFSplit StreamsplitterDivides feed basedon splits specifiedfor outlet streamsStream splitters. Bleed valvesSSplit Substreamsplitter Divides feed basedon splits specifiedfor each substreamStream splitters. Perfectfluid-solid separatorsFlash2Two-outletflashSeparates feed intotwo outlet streams,using rigorousvapor-liquid orvapor-liquid-liquidequilibriumFlash drums, evaporators,knock-out drums,single stage separatorsFlash3Three-outlet flashSeparates feed intothreeoutlet streams, usingrigorousvapor-liquid-liquid equilibriumDecanters, single-stageseparators with twoliquid phasesDecant er Liquid-liquiddecanterSeparates feed intotwoliquid outlet streamsDecanters, single-stageseparators with twoliquid phases and no vaporphaseHeater Heater orcoolerDetermines thermalandphase conditions ofoutlet streamHeaters, coolers, condensers,and so onHeatX Two-streamheatexchangerExchanges heatbetweentwo streamsTwo-stream heat exchangers.Rating shelland tube heat exchangerswhen geometry is known.DSTW UShortcutdistillationdesignusing theWinn-Underwood-GillilandmethodDeterminesminimumreflux ratio,minimumnumber of stages,andeither actual refluxratio oractual number ofstagesColumns with one feed andtwo productstreamsDistlShortcutdistillationratingusing theEdmistermethodDeterminesseparationbased on reflux ratio,number of stages,anddistillate-to-feedratioColumns with one feed andtwo productstreamsRadFracRigorousfractionationPerforms rigorousratingand designcalculations forOrdinary distillation,absorbers, strippers,extractive and azeotropicdistillation, three-single columns phase distillation, reactivedistillationBatchF racBatchdistillationPerforms rigorouscalculations forbatchdistillationBatch distillationExtractRigorousliquid-liquidextractionModelscountercurrentextraction of a liquidstream using asolventLiquid-liquid extractorsRStoic StoichiometricreactorModelsstoichiometricreactor withspecifiedreaction extent orconversionReactors where reactionkinetics are unknown orunimportant but stoichiometryand extent of reaction areknownRYieldYieldreactorModels reactor withspecified yieldReactors where stoichiometryand kinetics are unknown orunimportant but a yielddistribution is knownREquil EquilibriumreactorPerforms chemicalandphase equilibrium byStoichiometriccalculationsReactors with simultaneouschemical equilibrium andphase equilibriumRGibbs Equilibriumreactor withGibbsenergyminimizationPerforms chemicalandphase equilibrium byGibbs energyminimizationReactors with phaseequilibrium or simultaneousphase and chemicalequilibrium. Calculating phaseequilibrium for solid solutionsand vapor-liquid-solid systems.RCSTR Continuousstirred tankreactorModels continuousstirred tank reactorOne-, two, or three-phasestirred tank reactors withrate-controlled and equilibriumreactions in any phase basedon known stoichiometry andkineticsRPlug Plug flowreactorModels plug flowreactorOne-, two-, or three-phaseplug flow reactors withrate-controlled reactions in anyphase based on knownstoichiometry and kineticsRBatchBatchreactorModels batch orsemi-batch reactorOne-, two-, or three-phasebatch and semi-batch reactorswith rate-controlled reactionsin any phasebased on known stoichiometryand kineticsPumpPump orhydraulicturbineChanges streampressure when thepower requirementisneeded or knownPumps and hydraulic turbinesCompr Compressoror turbineChanges streampressure whenpowerrequirement isneededor knownPolytropic compressors,polytropic positivedisplacement compressors,isentropiccompressors, isentropicturbinesValveValvepressuredropModels pressuredropthrough a valveControl valves and pressurechangersModel Icon Description Purpose Use ForMixer物流混合器将多股物流合并为一股物流混合三通型、物流混合操作、增加热流、增加功流FSplit分流器把入口物流分成多个规定的出口物流分流器、bleed（排气）阀SSplit子物流分流器把每个入口子物流分成多个规定的出口物流分流器、固液分离器Flash2两股出口流的闪蒸罐用严格气-液或气-液-液平衡，把进料分成两股出口物流闪蒸罐、蒸发器、分液罐、单级分离器Flash3三股出口流的闪蒸罐用严格气-液-液平衡，把进料分成三股出口物流倾析器、有两个液相的单级分离器Decant er 液-液倾析器把进料分成两股液相出口物流倾析器、有两个液相和没有气相的单级分离器Heater 加热器或冷却器确定出口物流的热和相态条件加热器、冷却器、冷凝器等等HeatX 两股物流的换热器在两股物流之间换热两股物流的换热器。

•Aspen中的单元操作模型•混合器/分流器（Mixers/Splitters）•分离器(Separators)•换热器(Heat Exchangers)•塔(Columns)•反应器(Reactors)•压力变换器(Pressure Changers)•操作器(Manipulators)•固体(Solids)•用户模型(Users)•概念设计(Conceptual Design)Reators (反应器)以物料平衡为基础Ryield(收率反应器)Rstioc(化学计量反应器)以反应平衡为基础REquil(平衡反应器)RGibbs(吉布斯反应器)以动力学为基础RCSTR(连续搅拌釜式反应器)RPlug(活塞流反应器)RBatch(间歇反应器)•Rstoic 和Ryield这两类基于物料平衡的反应器适用于反应动力学不知道或不重要的情况•RStoic✓适用于反应动力学不知道或不重要的情况✓要求原子平衡和质量平衡✓用于化学平衡数据和动力学数据不知道或不重要的反应器✓可以规定或计算在参考温度和压力下的反应热2 CO + O2 --> 2 CO2C + O2 --> CO22 C + O2 --> 2 COC, O2IN OUTRStoic C, O2, CO, CO2•RStoic规定屏•RYield✓用于收率分布已知的反应器✓只要求物料平衡, 不要求原子平衡✓用来模拟入口物流不知道，但出口物流已知的反应器(例如，模拟一个炉子)70 lb/hr H 2O 20 lb/hr CO 260 lb/hr CO250 lb/hr tar （焦油）600 lb/hr char （焦碳）1000 lb/hr Coal （煤）IN OUTRYieldREquil（平衡反应器）和RGibbs（Gibbs自由能最小的平衡反应器）都可用于化学平衡和相平衡同时发生的单元操作的模拟。

✓不考虑反应动力学✓该类模块能求解相似的问题，但对于问题的规定不同✓允许单个反应能达到严格化学平衡•REquil✓通过求解反应平衡方程进而计算化学平衡和相平衡✓不能进行3相闪蒸计算✓可用于多组分物系、已知一些反应并且仅有较少组分参加反应的情况•RGibbs （Gibbs自由能最小的平衡反应器）通过吉布斯自由能最小化来确定在产品吉布斯自由能最小时的产品组成。