乙酸乙酯合成及提純流程模擬

名目乙酸乙酯合成及提純流程模擬 1\l“_TOC_250011“一、設(shè)計(jì)任務(wù)與要求 3\l“_TOC_250010“設(shè)計(jì)任務(wù) 3\l“_TOC_250009“設(shè)計(jì)目標(biāo) 3\l“_TOC_250008“二、設(shè)計(jì)思路及流程設(shè)計(jì) 4\l“_TOC_250007“三、工藝及操作條件 5\l“_TOC_250006“設(shè)置單位制和輸出報(bào)告 5\l“_TOC_250005“輸入組分 5\l“_TOC_250004“物性方法選擇 6\l“_TOC_250003“物流輸入 6\l“_TOC_250002“Block輸入 7四、模擬運(yùn)算結(jié)果 13五、靈敏性分析 17T3塔的再沸器壓力對(duì)乙酸乙酯濃度影響 17\l“_TOC_250001“T3塔的回流比對(duì)乙酸乙酯濃度影響 18T2塔的摩爾回流比對(duì)乙酸乙酯濃度影響 205.2T1塔的摩爾回流比對(duì)乙酸乙酯濃度影響 21\l“_TOC_250000“六、確定工藝參數(shù) 23一、設(shè)計(jì)任務(wù)與要求乙酸乙酯制備及分別設(shè)計(jì)任務(wù)學(xué)號(hào)學(xué)號(hào)1234567890分子甲烷乙醇丙烷正丁烷正戊烷甲苯甲醇異丙苯正戊烷乙酸(1)2atm120°C200kmol/h,5kmol/h(2)99%以上設(shè)計(jì)目標(biāo)工藝流程的選擇和論證分析全流程模擬流程優(yōu)化動(dòng)態(tài)分析(選作)酸乙酯并提純。查得各組分的沸點(diǎn)如下：1.1各組分沸點(diǎn)組分組分甲烷甲醇乙醇乙酸沸點(diǎn)/°c-161.5-0.536.164.778.3117.977二、設(shè)計(jì)思路及流程設(shè)計(jì)在本次分別任務(wù)中乙酸和乙醇為反響物，所含的雜質(zhì)為甲烷，正丁烷、正戊烷、甲醇，由于甲醇對(duì)反響影響較大，故先承受一個(gè)塔將其分別出去。依據(jù)其他烷炷的沸點(diǎn)比甲醇低，可以一同除去。然后直接進(jìn)展反響。反響生成的產(chǎn)物中，包括乙酸、乙醇、乙酸乙酯和水，其中乙醇與乙酸乙酯較難分別，故先除去乙酸，再除去乙醇，最終通過(guò)傾析出去水?！睺1〕,〔R〕,〔T2〕,脫乙醇塔〔T3〕,冷凝器〔COOL〕,傾析器〔DEC〕o流程圖如下：圖24 異丙苯制備及分別工藝流程圖三、工藝及操作條件設(shè)置單位制和輸出報(bào)告完成流程后單擊NEXT鍵，進(jìn)入如下界面，點(diǎn)擊setup文件夾，輸入名稱(chēng)以及選擇單位制為米<Main<MainFlowsheetRAD-RR-3Setup-Specifications|_+ .|QGlobal|(^Description|AccountingjDiagnostics]Informationi!TitleS3三GlobalunitsetMET—J1?■SimulationAllItems4Setup Specifications InputmodeSteady-State■Streamclass:basis：CONVENMoleInputmodeSteady-State■Streamclass:basis：CONVENMole??AmbientpressureJatm▼ILJSolidsLJComp-GroupsOptions Ambienttemp4283.15K―【Options Ambienttemp4283.15K―【匚&StreamPrice Validphases:■【力UnitSets回Custom ? Freewater NoIPropertySets . Operationalyear8766 hr—JAnalysisFlowsheet4￡■Streams>Ql卜3-1setup設(shè)置界面Simulation MainFlowsheetRAD-RR-3Setup-ReportOptions+AllItems GeneraljFlowsheet；Blockj^Stream|Property|ADA，LoSetup JGenerateastandardstreamreportJIncludestreamdescriptionsSpecifications回CalculationOptions ItemstobeincludedinstreamreportStreamClassDLJSolids Flowbasis Fractionbasts Streamformat二Comp-Groups V：Mole □ Mole TFF:GENJ ■fComp-Lists ]Mass JMass oStandard(80characters)tWStreamPricefBUnitSets ./SortstreamsalphanumericallyJCustomUnits尋ReportOptions IncludeStreamsExcludeStreamyPropertySetsComponentAttributest>國(guó)PropeftySetsStreamNames BatchOperationSupplementaryStreamI2Flowsheet，MStreamsG2【07Properties 圖 輸出報(bào)告設(shè)置界3-2而進(jìn)入如下界面■▼UnitsReportOptionsStd.liq.volume□ Std.liq.volumeWide(132Std.liq.volume□ Std.liq.volumeWide(132characters)JComponentswithzerofloworfractionLJAnalysis輸入組分]OXiedtg\|itfm4?um.hnnuiiHmUiHUlIUu??eaDotMe|主 OfrtMrm (nn^wwtIID“MCw<w^iwwf^^司<.^1M0IMUUISlM3l9tJAf^.fltnci3]Utfhr(ndppetg￡hmom^3迎ugtwnpofwih囪C^KAHltASrAuttflJHenryCwBflir4fM：6^upt,rei/wun0Mrthutft*2!<*ct<jno*iMr44?t

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3-3數(shù)據(jù)庫(kù)選擇界而物性方法選擇選擇物性方法與模型為PENG-ROBPropertiesAllItems4qSetup

Methods-Specifications

PropertiesSpecifications

Propertymethods&options

MethodnameCalculationOptions七UnitSetsReportOptions

MethodfilterBasemethod：Henrycomponents:

ALLPENG-ROB

PENG-ROB ▼;MethodsAssistant.Modify4_&ComponentsSISpecifications2MolecularStructure」Assay/Blend由LightEndProperties□PetroCharacterization

PetroleumcalculationoptionsFree-watermethod:STEAM TAWatersolubility:3Electrolytecalculationoptions

EOS:Dataset:gamma:Dataset

ESPRSTD1 斐?圈IPseudocomponentso]ComponentAttributes/HenryComps51UNIFACGroupsI2Polymers4fillMethods.^1Specifications

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Liquidmolarenthalpy:HLMX106LiquidmolarvolumeVLMX20□Heatofmixing_JPoyntingcorrectionUseliquidreferencestateenthalpy物流輸入steams界面，輸入物料的溫度、壓力以及流率。選擇Mole-Flow,將單位kmol/hr。|?Mixed |QSolid NCSolid|cSpecificationsReferenceIemperature

FlashOptions|EOOptions|Costing Information

口...1 1FlashTypeStatevariablesTemperaturePressureVaporfraction:Totalflowbasis:Totalflowrate

Temperature Pressure CompositionMole-Flow

Value393.15K▼393.15K▼2atm▼Mole▼kmol/hr■CH4Component5C2H6O4)!C3H8C4H10-01CH40C5H12-01C2H4O-01WATERC4H8O-012005555200003-5Block輸入脫甲醇塔(T1)

3-5物流輸入界而

Totak425SetupoptionsCalculationtypeEquilibrium■Numberofstages:Condenser38TotalKetttesVSetupoptionsCalculationtypeEquilibrium■Numberofstages:Condenser38TotalKetttesVStageWizard▼Reboiler▼▼▼Validphases:ConvergenceOperatingspecificationsVapor-LiquidStandardRefluxratio▼Mole▼16538Distillatetofeedratio▼Mole▼0-059Freewaterrefluxratio:0FeedBasis1?Configuration| GStreams|Pressure|?Condenser|Feedstreams

?Reboiler 3-Pha:e|InformationName Stage Convention1124Above-StageProductstreamsNameStagePhaseBasisFlowUnitsFlowRat138LiquidLiquidMoleMolekmol/hrkmol/hrNamePseudoStreamNamePseudoStreamLTypeStageInternalPhaseReboilerPhaseReboilerConditions1ID_JPuC:?Configuration:?Configuration|?Streams|?Pressure|?Condenser|?ReboilerInformationView: Top/Bottom ▼Topstage/CondenserpressureStage1/Condenserpressure1Stage2pressure(optional)oStage2pressure(_)Condenserpressuredrop:Pressuredropforrestofcolumn(optional)oStagepressuredrop:。Columnpressuredrop:

atmatmatmatmatm反響器(R):

3-6T1設(shè)置0.9,393.15K,latm。Specifications:|QReactions|Combustion|HeatofReactionjSelectivity|PSDjConOperatingconditionsFlashType Temperature▼ Pressure ▼TemperaturePressure

393.151

K ▼atm ▼Duty:Vaporfraction:ValidphasesVapor-Only

cal/sec ■圖&7R設(shè)置反響器內(nèi)發(fā)生的反響設(shè)置如下:OSpecifications(^ReactionsCombustionjHeatofReactionjSelectivityjPSDjComponentAttr.IUtilityIInformationReactionsRxnNo.12

SpecificationtypeFrac,conversionFrac,conversion

StoichiometryC2H6O-0KMIXED)+C2H4O21(MIXED) >WATER(MIXED)*C4H80-01(MIXED)WATER(MIXED)+C4H8601(MIXED)->C2H6O-01(MIXED)*C2H4O-01(MIXED)Delete。EditStoichiometry3-8反響方程式輸入(T2)：^CcnfiguraticnStreams PressureI(^Condenser1<>Reboiler InformationSetupoptionstype:Numberofstages:CondenserReboilerValidphases

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atmatmatmatmatm3-9T2設(shè)置(T3)：I?Specifications|CalculationOptions*ConvergenceIInformationColumnspecifications Pressure-------------------------------------------------Numberofstages: Condenser:2 atm ▼oRefluxratio:

-1.2

Reboiler 2 atm ▼KeycomponentrecoveriesLightkey:Comp:WATERRecov:0.98Heavykey:Comp:C2H6O-01Recov:0.007

。TotalcondenserwithallvaporcondenserdistillatePartialcondenserwithvaporandliquiddistillateTotalcondense^liquiddistillateisatIX—TIrix■■.rc--LIX—TIrix■■.rc冷卻器

3-1013設(shè)置?Specifications|FlashOptions|Utility\InformationFlashspecifications FlashType TemperaturePressureTemperature 298.15 K ▼TemperaturechangeDegreesofsubcooling:PressureDuty:Vaporfraction:Pressuredropcorrelationparameter

i 2j

\K *[Katm ▼—cal/sec—▼Vapor-Liquid▼3-11COOL設(shè)置?Specifications1CalculationOptions”Efficiency |EntrainmentUtility|InformationDecanterspecificationsPressure1atm▼oTemperature:298.15K▼ODuty:cal/sec.Keycomponentstoidentify2ndliquidphaseAvailablecomponentsCH4C2H6O-01C3H8C4H10-01CH4OC5H12-01C2H4O-01Key component threshold<<for2ndliquidphaseComponentmolefraction:0.5

KeycomponentsWATERC4H8O-013-12DEC設(shè)置四.模擬運(yùn)行結(jié)果a004MW■oouSUM.letmpiMmiDZ1>a004MW■oouSUM.letmpiMmiDZ1>V8J■aMtrmwvWtTtaitairQMSOLZJTQkcmUFO7V7U20M2am卜?nXACS??J412FRI1HU4UFPM>0U(MM?W9wamwwe^SEW*w?CMDOHU-Ol二HKHttWEUhAOO：j*Jl<OTMI?WI|MAHIUM1u^t?MeUnti[?f偵,*?UlTOMMUl44運(yùn)行結(jié)果ttr—?..Molelod?er/Topstageperformance:Summary i|BalanceSplitFractionReboilerUtilitiesStageUtilitiesGStatusBasis:NameValueUnits.Temperature123.947KSubcooledtemperatureHeatduty-1.15133e+06cal/sec8?SubcooleddutyReboiler/BottomstageperformanceName Value

GUnits .GTemperature 363324 KHeatduty 205390 cal/secBottomsrate

399925

kmol/hr日Boiluprate 76.8969 kmol/hr w4-2T1運(yùn)行結(jié)果||Summary|Balance|PhaseEquilibriumReactions|Selectivity^UtilityUsage|?StatusOutlettemperature393.15KOutletpressure:1atmHeatduty:917419cal/secNetheatduty:917419cal/secVaporfraction:1stliquid/Totalliquid:1▼▼▼▼ K▼▼▼▼Condenser/TopstageperformanceNameTemperatureValue123.947UnitsKSubcooledtemperatureHeatduty-1.15133e+06cal/sec0▼SubcooleddutySummary|Balance|SplitCondenser/TopstageperformanceNameTemperatureValue123.947UnitsKSubcooledtemperatureHeatduty-1.15133e+06cal/sec0▼SubcooleddutyReboiler/BottomstageperformanceName

Units uTemperature363324KTemperature363324KHeatduty205390cal/secBottomsrate399.925kmol/hrBoiluprate76.8969kmol/hr4-4T2運(yùn)行結(jié)果Summary|BalanceRefluxRatioProfile|OStatus|Minimumrefluxratio:i154573Actualrefluxratio:1^5487Minimumnumberofstages:15.5162Numberofactualstages:313114Feedstage:18.9168Numberofactualstagesabovefeed17.9168Reboilerheatingrequired:1.76279e+06cal/secCondensercoolingrequired:1.70894e+06cal/secDistillatetemperature:352.605KBottomtemperature:363.569KDistillatetofeedfraction:HETP:0.9051074.513運(yùn)行結(jié)果Outlettemperature298,15KOutletpressure1atmVaporfraction:0Heatduty:-120246cal/secNetduty:-120246cal/sec1stliquid/Totalliquid:1Pressure-dropcorrelationparameter:Summary|BalanceSummary|BalancePhaseEquilibrium|UtilityUsageQStatus▼▼▼▼▼▼▼▼Summary|Balance|PhaseEquilibrium|UtilityUsage|▼▼▼▼Outlettemperature298.15KOutletpressure1atmHeatduty:-141877caJ/secNetduty:-141877ca7sec1stliquid/Totalliquid:0.4097127傾析器運(yùn)行結(jié)果五.靈敏度分析輸入?yún)?shù)如下:||yVary|?Define|?Tabulate|Fortran\Declarations|Optional|CasesInformationCases:[ZJ2Variableno:1■i.1DisablevariableManipulatedvariableType Bkxk-VarBlock:T3—. Valuesforvariedvariable▼ Listofvalues▼Variable:Sentence:|賣(mài)]PBOT▼QOverallrangePARAMLowen2Units:atmUpper 4oints: 10!ncnReportlabelsLinel:Line2:Line3:5-la定義自變Line4:量GVariableDefinitionSelectavahabiecategoryandreferenceReactionsCloseVariablename:%VReactionsCloseCategoryAAIICBlocksStreamsC ModelUtility；PhysicalPropertyParameters

ReferenceType:Stream：SubstreamComponent

Mole-Frac10MIXEDC4H8O015-lb定義因變量?Vary、 ODefine?TabulateFortran|Declarations|Optional|CasesInformationColumnNo. Tabulatedvariableorexpression5-lc設(shè)置表格5-ld結(jié)果作圖由分析結(jié)果可見(jiàn)，隨再沸器壓力的增加，乙酸乙酯濃度先快速下降，然后再上升，經(jīng)過(guò)一小段增加，再次下降，然后開(kāi)頭漸漸增加。因此比較經(jīng)濟(jì)的選擇就2atmo5-2a定義自變量T35-2a定義自變量||?Vary1?Define|^Tabulate|Fortran:Declarations|OptionaljCasesInformationQVariableDefinitionSelectavanabiecategoryandreferenceVariablenameOYCategory0AllCBlocksStreamsCModelUtilityPhysicalPropertyParametersReactions

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