中国石油大学(华东)硕士学位论文环氧乙烷装置的工艺设计姓名:陈向华申请学位级别:硕士专业:化学工程指导教师:张秀霞;王海峰20081001摘要以辽阳石油化纤公司乙二醇车间的实际情况为基础,采用乙烯直接氧化法对年产5.7万吨环氧乙烷的装置进行初步的工艺设计。主要对环氧乙烷的氧化反应器、吸收塔、主要换热器进行了工艺和设备尺寸的参数优化,并对生产过程中的安全问题和环保问题作了初步评定。氧化反应器是环氧乙烷生产中的最重要设备,在操作温度为250C、操作压力为2.2MPa的工艺条件下,经过物料衡算和热量衡算决定采用直径为5.2m的列管式固定床反应器,列管总共有12849根,催化剂的床层高度为6米。吸收塔采用双溢流浮阀塔,经过设计确定塔高为21.25米,塔径为3.4米,塔板总数为28块。并通过水力学验算,认为设计的吸收塔符合要求,由气液负荷性能图可看出操作弹性合理。换热器的设计包括反应系统的气.气换热器和循环气冷却器两部分,均属于选型设计。考虑到处理量较大,故采用多台换热器并联操作,压强降和总传热系数核算结果表明,选型合理。关键词:环氧乙烷,反应器,吸收塔,换热器,工艺设计ProcessDesignofOxiraneUnitChenXiaIlghm(ChemicalEngineering)DirectedbyProf.ZhangXiuxiaAbstractThisdesignisbasedontheinspectionintheMEGworkshopofLiaoyangPetroleumChemicalFibreCompanypresentsapreliminaryprocessdesignofoxiraneunitthatusingthedirectoxidationofethylene,callproducedoxirane57,000tonseveryyear.Inthedesign,wemainlycalculatedtheprocessparameterandthesizeoftheoxidizedreactorabsorptingtowerandheatexchanger,atthesametime,wehaveapreliminaryestimatingofsecurityandenvironmentprotectionintheproductionofoxirane.Oxidizedreactoristhemostimportantdeviceintheproductionofoxirane.Undertheconditionofoperatingtemperatureis250。Candoperatingpressureis2.2MPawedeterminedusedapipedfⅨed-bedreactorthatis5.2mindiameter.Thenumberofpipesis12849theheightofcatalystis6m.Theabsorptingtowerisatwo-floodvalvetowerwhichhas28plates,21.25minheightand3.4mindiamet??r.Wecalllearntheabsorptingtowerwedesignediscertificatedthroughthefluid-dynamiccheckingcalculation.TheGas-Liquidgraphshowtherangeofoperationisreasonable.Thedesignofheatexchangerscontaintwoparts:theGas-Gasheatexchangerofthereactorsystemandthecoolerofthecyclegas.Bothofthemareselectivedesign.Becauseofthetaskisquitemuch,wemustuseafewheatexchangerscooperation.Thecalculatingresultsofpressureandgrossheat??exchangingcoefficientshowtheheat--exchangerweselectediscertificated.Keywords:Oxirane,ReactorAbsorberDeatExchangerProcessDesign关于学位论文的独创性声明本人郑重声明:所呈交的论文是本人在指导教师指导下独立进行研究工作所取得的成果,论文中有关资料和数据是实事求是的。尽我所知,除文中已经加以标注和致谢外,本论文不包含其他人已经发表或撰写的研究成果,也不包含本人或他人为获得中国石油大学(华东)或