课程设计说明书学院：生态与资源工程学院专业班级：2012级化学工程与工艺(1)班课程名称：化工原理课程设计题目：苯-乙苯连续精馏塔的设计学生姓名：蔡学号：20124121036指导老师：杨自涛2015年6目录一、设计说明书............................................................................................................312.1塔设备在化工生产中的作用和地位...............................................................42.2筛板塔的结构特点及应用场合......................................................................42.3主要物性数据..................................................................................................4三、精馏塔的物料衡算................................................................................................53.1进料组成..........................................................................................................53.2全塔的物料衡算..............................................................................................53.3相对挥发度和回流比的确定..........................................................................53.4塔板数的计算..................................................................................................73.4.1理论塔板数的计算...............................................................................73.4.2实际塔板数的计算...............................................................................8四、精馏塔的工艺条件及有关物性数据的计算........................................................84.1平均压力PM.....................................................................................................84.2平均温度tm.....................................................................................................94.3平均分子量......................................................................................................94.4平均密度........................................................................................................104.5液体的平均表面张力....................................................................................104.6液体平均粘度................................................................................................11五、汽液负荷计算......................................................................................................11六、精馏塔的塔体工艺尺寸计算..............................................................................116.1塔径................................................................................................................116.2溢流装置........................................................................................................136.3弓形降液管宽度Wd和截面Af.....................................................................146.4降液管底隙高度.............................................................................................156.5塔高................................................................................................................15七、塔板的流体力学验..............................................................................................167.1降液管液泛....................................................................................................167.2降液管内停留时间........................................................................................177.3液沫夹带.....................
