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1、本科毕业设计——文献翻译OperationofplaterectificationtowerWUChang-xiang(HarbinGasificationPlant,Harbin154864,China)Abstract:Theinfluencingfactors,abnoimalphenomenonandrectificationprocesswereanalyzedtodirectactualoperationKeywords:rectificationtower,recification,reboiler,operationDisti
2、llationcolumnisamulti-stagepartialvaporizationandpartialcondensationaccordingtothedifferentcomponentsinthemixturevolatilityineachfloortowerboardtoachievetheseparationofamixtureofvariouscomponentsofthetowergas-liquidcontactdevice,alsoknownasdistillation.Aplatecolumnandpacked
3、columntypes.Accordingtomodeofoperationaredividedintocontinuousdistillationandbatchdistillation.Steamfromthebottomofthecolumnentry,andthedeclineinliquidcountercurrentcontactwiththetwoincontact,thedropinthevolatileliquid(lowboilingpoint)componentsiscontinuouslytransferredtoth
4、esteam.Thedifficultyofsteamvolatile(highboiling)componentcontinuedtodeclineinthetransferofliquid,steamthecloserthetopofthetower,thehighertheconcentrationofitsvolatilecomponents,whilethedeclineintheclosertowerbottomliquid,itshardtobemorevolatilecomponentsrichset,toachievecom
5、ponentseparation.Steamrisingfromthetopofthetowerintothecondenser,theliquidpartofthecondensateasrefluxliquidtoreturnintothedistillationtower,therestisremovedasdistillate.Towerbottomoutflowofliquid,someofwhichintothereboiler,thermalevaporation,thesteambacktotower,andtheotherp
6、artoftheliquidasresiduarelease.Comparedwithotherchemicalunitoperations,distillationunit,althoughrelativelysimple,singleproductionrunthatoftenappearinavarietyofproblemsaffectingtheoperationofthedistillationunit,leadingtotowertoporbottomofproductfailure,severeconstraintsofpro
7、ductionequipmenttheoperationresultinginproductloss.1.Regularchangesinprocessconditionsofdistillationcolumn1.1ReboilertemperatureUnderthesameoperatingpressure,raisingthetemperatureofthereboiler,thevolatilecomponentsinthetowerliquidtoreduce,atthesametime,therisingvaporvelocit
8、yincreases,andhelptoimprovetheefficiencyofmasstransfer.Ifproductsfromthetopoftheto
