北方民族大学2011届毕业生毕业设计论文题目:立式热虹吸式再沸器的设计院(部)名称:机械学院学生姓名:专业:学号:指导教师姓名:论文提交时间:论文答辩时间:学位授予时间:大连理工大学大学2005届毕业生毕业设计摘要精馏的本质是利用不同物质的挥发度不同,通过多次汽化、多次冷凝的精馏过程而达到物质分离的单元操作过程,而多次汽化所需的能量即通过再沸器提供的,这就是再沸器的作用。甲醇釜液再沸器是一种换热器,通常采用热虹吸式换热器,也是一种列管式换热器,在生产企业中占有较重要的地位,它直接影响产品的质量和产量。本设计主要是对其工艺、结构等的设计,通过选用换热设备的型号和对国标的查找,设计出经济实用的化工设备。再沸器的结构图使用AutoCAD二维绘图软件绘制,清楚地表达出结构尺寸,便于改进和生产。主要介绍了再沸器的设计工作以及它在生产过程中处于的地位和作用,它是精馏塔不可或缺的一部分,它提供给精馏塔多次汽化所需的能量,它与冷凝器等都是换热设备。关键词:再沸器汽化AutoCAD列管式换热器甲醇ABSTRACTDistillationisthephysicalseparationunitoperationwhichisachievedbytherepeateddistillationprocessofseveralvaporizationandcondensation,sincethe1大连理工大学大学2005届毕业生毕业设计volatilityofdifferentmaterialsvaryfromeachother.AndtheenergyrequiredforvaporizationisprovidedbythereboilerThisistheroleofthereboiler.Methylreboilerisaheatexchanger,itisalsoatube-typeheatexchanger.Inthemanufacturerindustryitplaysaveryimportantrole,forithasdirectimpactontheproductqualityandyield.Thisdesignismainlyforitstechnology,structuredesign.Byselectingthemodelandthenationalstandardsoftheheattransferexchanger,wecancomeupwiththeeconomicandpracticaldesignofchemicalequipment.Reboilerstructurediagramisdrawnbythetwo-dimensionaldrawingsoftwaredrawingAutoCAD.Sowecanclearlyexpressthestructuresizeanditisconvenientforusforfurtherimprovementandproduction.Nowwehavecompletedthedesignofthereboileranditsroleintheproductionprocess.Itisanintegralpartofthedistillationcolumn,whichprovidestheenergyneededtovaporizeseveraldistillationcolumns.Alongwithcondenserstheyareboththeheatexchangers.Keywords:Reboiler;Vaporization;AutoCAD;distillationcolumnheatexchanger;methyl目录前言..............................................................4第一章再沸器基本参数...............................................61.1、设计任务和设计条件...........................................61.2、再沸器类型的选择.............................................61.3、流程的安排...................................................72大连理工大学大学2005届毕业生毕业设计1.4、再沸器的热流量计算...........................................71.5、流体的有效平均温差...........................................71.6、传热面积的估算...............................................81.7、再沸器基本参数的初步确定.....................................81.7.1换热器型号.................................................81.7.2折流板.....................................................91.7.3拉杆......................................................111.7.4防冲板...................................................12第二章再沸器机械强度设计.........................................132.1壳体壁厚计算.................................................132.2管箱壁厚计算.................................................142.3封头壁厚计算.................................................152.4、管箱结构....................................................162.4.1管箱结构尺寸确定.........................................162.4.2管箱法兰............