化工毕业设计物料衡算及设备计算参考

-I-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-II-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-I-目录摘要............................................................................................................................................IAbstract..............................................................................................................................................II第一篇设计说明书......................................................................................错误!未定义书签。第1章精馏的原理概述..............................................................................错误!未定义书签。1.1精馏原理.............................................................................................错误!未定义书签。1.2减压精馏.............................................................................................错误!未定义书签。1.3苯乙烯的精馏技术.............................................................................错误!未定义书签。第2章苯乙烯产品介绍..............................................................................错误!未定义书签。2.1苯乙烯的用途.....................................................................................错误!未定义书签。2.2苯乙烯的性质.....................................................................................错误!未定义书签。2.3应急处置.............................................................................................错误!未定义书签。2.4苯乙烯的贮存.....................................................................................错误!未定义书签。2.4管理信息.............................................................................................错误!未定义书签。2.5危险特性.............................................................................................错误!未定义书签。第3章苯乙烯的生产技术..........................................................................错误!未定义书签。3.1生产技术概述.....................................................................................错误!未定义书签。3.2苯乙烯的生产技术及进展................................................................错误!未定义书签。3.2.1乙苯脱氢法................................................................................错误!未定义书签。3.2.2环氧丙烷—苯乙烯联产法.......................................................错误!未定义书签。3.2.3热解汽油抽提蒸馏回收法.......................................................错误!未定义书签。3.2.4丁二烯合成法...........................................................................错误!未定义书签。3.2.5其他生产方法...........................................................................错误!未定义书签。3.2.6小结............................................................................................错误!未定义书签。第4章苯乙烯的供需现状..........................................................................错误!未定义书签。4.1国内外苯乙烯生产情况....................................................................错误!未定义书签。4.1.1国外生产情况............................................................................错误!未定义书签。4.1.2国内生产情况............................................................................错误!未定义书签。-II-4.2国内外苯乙烯市场需求情况............................................................错误!未定义书签。4.2.1国外市场需求情况....................................................................错误!未定义书签。4.2.2国内市场需求情况....................................................................错误!未定义书签。第5章苯乙烯的发展前景及建议.............................................................错误!未定义书签。5.1苯乙烯的技术发展趋势和前景........................................................错误!未定义书签。5.2苯乙烯的发展建议.............................................................................错误!未定义书签。第6章工艺流程论述..................................................................................错误!未定义书签。6.1苯乙烯的生产原理.............................................................................错误!未定义书签。6.2工艺过程的确立.................................................................................错误!未定义书签。6.3苯乙烯精馏工艺流程.........................................................................错误!未定义书签。6.4主要工艺流程图（PRO/II模拟）...................................................错误!未定义书签。第7章仪表及自控............................................