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1、TheMethodoftheDistillationandDevelol〜ment(Continuced)ZHAOJin.q—vin.clLIUIon.cl〜,WANGlu1,ZHANGWei-wei',SUNLan—lanr7.ResearchInstituteofDaqingPetrochemicalCompany,Daqing163714,China；2.DepartmentofPetrochemicalEngineering,DaqingPetroleumInstitute.Daqin
2、g163714,China)Abstract：Thispaperconsulsthefoundationofagreatdealofliterature,itemphasizestOintroducemanydistillationmethodsandindustrialapplication,andthecurrentdevelopmentsituation.Itcomparesextractivedistillationandconstantboilingdistillation,andin
3、troducesdevelopmentofcatalyticdistillationtechnology.KeyWords：SeparationtechnOlOgy：distillationmethod；reactivedistillation1.IndustrialapplicationofanextractivedistillationExtractiveDistillationcommonlyusedinindustrybutene/butadiene,andothercomponents
4、ofC4gases.SeparationofthetwosetsofdevicesC4domesticlawandtheACNsolventDMFmethodareverylarge,asolventextractiontowerthaninthe7to8,notonlyenergy,highsolventconsumption,andtheextractivedistillationofliquidloadishigh,reducingthetowerproductioncapacityand
5、thetrayefficiency,theactualnumberoftraysincreases,offsetbytheincreaseafteraddingtherelativevolatilityofthesolventsothattheeffectofreducingtherequirednumberoftrays.Moreover,sincetheon-boardliquidload,easytofloodingandreducethetowertoallowoperationofva
6、por-liquidload.Therefore,theextractivedistillationcolumngenerallylowproductioncapacityIntheextractivedistillationprocessroutesandinconveniencetochangethecaseofthesolvent,usinganewtypeoftrayefficiencywithinthecomponent,istoimprovetheextractivedistilla
7、tioncapacityofaneffectivestrategy.Ifmorethaninrecentyearsdevelopedcompoundslant-holeoverflowplatecanreplacetheoriginalvalvetraytoincreaseproductioncapacity.Variousseparationmethodsdevelopedinrecentyearsthecombinationofseparationbetweentheprocess,extr
8、activedistillationisallabout.Forexample,iftheseparationofaqueousalcoholbyextractivedistillationandazeotropicdistillationcombined,canbetterplaytheextractivedistillationoflowenergyconsumption,theadvantagesofhighpurity.First,extractivedistillationusingh
