Multi-Effect+Evaporation+Coupled+with+MVR+Heat+Pump+Thermal+Integration+Distillation+for+Separating+

EnergyandPowerEngineering,2017,9,772-785http://www.scirp.org/journal/epeISSNOnline:1947-3818ISSNPrint:1949-243XDOI:10.4236/epe.2017.912048Nov.22,2017772EnergyandPowerEngineeringMulti-EffectEvaporationCoupledwithMVRHeatPumpThermalIntegrationDistillationforSeparatingSaltContainingMethanolWastewaterDemingYang,YifanYin,ZhengguangWang,BiyunZhu,QiangGuCollegeofPetrochemicalEngineering,ChangzhouUniversity,Changzhou,ChinaAbstractDuetothehighenergyconsumptionforseparationofsaltcontainingmetha-nolwastewater,inthiswork,themulti-effectevaporationcoupledwithme-chanicalvaporrecompression(MVR)heatpumpandthermalintegrationtechnologieswereraisedforthefirsttime.TheELECNRTLthermodynamicmodelisusedtosimulateandoptimizetheevaporationrectificationprocess.Energyconsumptionandtotalannualcost(TAC)aretakenasobjectivefunc-tions.Theresultsshowthatmulti-effectevaporationcoupledwithconven-tionaldistillationprocesscansaveenergyconsumptionandTACby44.12%and39.14%.Themulti-effectevaporationcoupledwithdistillationprocessbasedonMVRheatpumptechnologycansaveenergyconsumptionandTACby55.27%and47.49%,whichissupertothree-effectevaporationcoupledwithconventionaldistillationprocess.Thethree-effectevaporationcoupledwithMVRheatintegrationprocesscansaveenergyconsumptionandTACby81.32%and58.55%,whichismoreeconomicalthanotherprocesses.Itcanbeclearlyseenthatthree-effectevaporationcoupledwithMVRheatintegrationprocessismorecompetitivetodealwiththesaltcontainingmethanolwaste-water.KeywordsSaltContainingMethanolWastewater,MVRHeatPump,HeatIntegration,EnergySaving1.IntroductionSaltcontainingorganicwastewaterismainlyfromthechemicalindustry,suchasHowtocitethispaper:Howtocitethispaper:Yang,D.M.,Yin,Y.F.,Wang,Z.G.,Zhu,B.Y.andGu,Q.(2017)Multi-EffectEvaporationCoupledwithMVRHeatPumpThermalIntegrationDistillationforSeparatingSaltContainingMethanolWastewater.EnergyandPowerEngineering,9,772-785.https://doi.org/10.4236/epe.2017.912048Received:Received:October24,2017Accepted:Accepted:November17,2017Published:Published:November22,201