化工毕业设计物料衡算及设备计算参考VIP免费

摘要本次设计的内容是年产12万吨苯乙烯减压精馏系统模拟计算及工艺设计，采用连续精馏的方式，使用四个精馏塔，将脱氢混合液精馏成纯度大于99.7%产品苯乙烯以及乙苯、苯、甲苯和焦油等重组分。利用PRO/II对苯乙烯减压精馏全工段进行了模拟计算，完成了物料衡算。利用模拟结果，对苯乙烯分离塔（T0403）进行了热量衡算和严格的设备计算，确定了塔高、塔径，填料性能和尺寸等。对塔顶冷凝器，进料泵，回流罐，塔接管等进行了计算选型和设计。绘制了带控制点的工艺流程图，物料平衡图，设备布置图及管道布置图。关键词：苯乙烯；减压；精馏；设计-I-AbstractThecontentisthesimulatecomputationandprocessdesignof120000t/aofstyrenevacuumdistillationsystem.Thedehydrogenatedmixtureisseparetedintostyrene,ethylbenzene,benzene,tolueneandotherheavyconstituentslikefluxoilwithcontinuousrectificationoffourdistillationcolumns.Thepurityofthestyreneismorethan99.7%.ThesimulatecomputationofthewholeprocessaboutthestyrenevacuumdistillationsystemhasbeencompletedwithPRO/II.Thematerialbalancehasalsobeenfinished.Accordingtotheresulsts,heatbalanceandtheequipmentsofthestyreneseparationtower(T0403)arestrictlycalculated.Theequipmentscomputationconsistsofthedeterminationoftowerheight,towerDrive,packingperformanceandsize.Theoverheadcondenser,feedpump,refluxaccumulatorandtowerpipesarestrictlycalculated,selectedanddesighed.Theengineeringflowsheetwithcontrolpoints,materialbalancediagram,equipmentlayoutandpipingdiagramhavealreadyfinished.KeyWords：Styrene;Vacuum;Distillation;Design-II-目录摘要.................................................................................................................................IAbstract..................................................................................................................................II第一篇设计说明书..............................................................................................................1第1章精馏的原理概述.......................................................................................................11.1精馏原理....................................................................................................................11.2减压精馏....................................................................................................................11.3苯乙烯的精馏技术.....................................................................................................2第2章苯乙烯产品介绍.......................................................................................................42.1苯乙烯的用途............................................................................................................42.2苯乙烯的性质............................................................................................................42.3应急处置....................................................................................................................52.4苯乙烯的贮存............................................................................................................62.4管理信息....................................................................................................................62.5危险特性....................................................................................................................7第3章苯乙烯的生产技术......................................................................................................