简介:EnergyConsumptioninTungstenExtractiveMetallurgyMoriG.AndPaschenP.(DepartrnentofNonferrousMetallurgy,UniversuyofLeoben,Franz-J...
简介:Theextractivereactionprocessofoxygen-workingsolution-waterthree-phasesystemfortheproductionofhydrogenperoxidebytheanthraquinonemethodwasinvestigatedinasieveplatecolumnof50mmininternaldiameter.Theoxidationreactionofanthrahydroquinoneintheworkingsolutionwithoxygenandtheextractionofhydrogenperoxidefromtheworkingsolutionintoaqueousphaseoccurredsimultaneouslyinthecountercurrentmode.Theagitatingeffectcausedbygaseousphasemadethedropletsofthedispersedphasebecomesmaller,thus,increasingtheliquid-liquidinterfacialcontactareasandresultingintheimprovementofthemasstransfervelocity.Resultsshowedthatthegas-agitationhadabeneficialeffectontheextractionofhydrogenperoxidefromtheworkingsolutionintotheaqueousphase;theconcentrationofhydrogenperoxideintheraffinatedecreasedwiththeincreaseofthegaseoussuperficialvelocities;andtheconcentrationofH2O2intheraffinateincreasedwiththeincreaseofthedispersedphasesuperficialvelocityatthesamesuperficialvelocityofthegaseousphase.IntheG-L-Lextractivereactionprocess,withtheincreaseofthegaseoussuperficialvelocities,boththeconversionoftheanthrahydroquinoneoxidationandtheextractionefficiencyofhydrogenperoxidefirstincreasedsignificantly,thenincreasedgradually.
简介:为2-propanol/water/ethanediol/KAc系统的咸包含的引得出的蒸馏列和咸包含的代理人恢复列被NRTL模型和修改罗斯松驰方法模仿。模拟结果证明在蒸汽液体平衡和NRTL参数的关联方法(TDCM)的盐效果的预言对说的系统合适。四个不同蒸馏技术过程被调查;结果证明咸包含的引得出的蒸馏过程是最好的。引得出的蒸馏列的模仿的设计在不同全部的阶段数字的条件下面被执行,喂地点,倒流比率,混合代理人的数量和KAc的集中。结果证明象17个阶段,在第9舞台的一个喂的地点,1.2的倒流比率,和喂的一个混合代理人的如此的因素1.141kmol/h评价,最好可能被适合操作条件。模仿的设计也为恢复咸包含的代理人为列被做。咸包含的引得出的蒸馏的模拟方法在这个工作简单、有效。
简介:Inordertoseparatemethylacetateandmethanolazeotrope,theionicliquid(IL)1,3-dimethylimidazoliumdimethylphosphate([DMIM]DMP)wasusedasthesolvent.TheAspenPlussoftwarewasusedtodesignandoptimizetheextractivedistillationprocess.Undertheoptimizedconditions,themassfractionsofmethylacetateandmethanolwerebothabove99.5%.Comparedwiththedimethylsulfoxide(DMSO)process,the[DMIM]DMPprocesshastheadvantagesofsavingenergyandlowerequipmentinvestmentcost.Theresultshowsthatusing[DMIM]DMPasthesolventtoseparateamethylacetateandmethanolazeotropehasbetterprospectinindustrialapplication.
简介:Thispaperhasstudiedthevapor-liquidequilibrium(VLE)forthesalt-containingextractivedistillationofthe1-propanol/watersystem.BinaryVLEdataweremeasuredforthesystemsof1-propanol(1)/KAc(4),ethanediol(3)/KAc(4),and1-propanol(1)/ethanediol(3),withtheVLEdatacorrelatedwiththeNRTLmodelinordertoobtainthemodelparametersofthesebinarysystems.ThebinaryVLEdatacitedintechnicalliteraturewerecorrelatedtoobtainthemodelparametersforotherbinarysystems.VLEdataofternaryandquaternarysystemspredictedbytheNRTLmodelagreedwellwiththeliteraturedata.TheinfluenceofKAc,ethanediol,andtheKAc/ethanediolmixtureonvolatilitybetween1-propanolandwaterwasinvestigatedrespectively.Testresultsshowedthattheabove-mentionedmaterials(KAc,ethanediol)andtheirmixture(KAcandethanediol)havedifferentinfluenceonthevolatility.Whenx3=0.5,andx4=0.05,theazeotropicpointcanbeeliminated.TheNRTLmodelmethodofsalt-containingVLEissimpleandeffectiveforthepredictionofthesystem’sVLEdata.