1、 化工原理课程设计 板式精馏塔设计 1 摘摘 要要 本设计采用板式精馏塔（浮阀塔）乙醇-水溶液，先找出乙醇- 水溶液的平衡数据，然后利用 AutoCAD 作图，求出最小回流比为 2.2406， 再建立总费用与回流比之间的函数关系， 利用 C 语言编程求 出最优回流比为 2.2476，利用塔板效率求出理论塔板数，然后对塔 和塔板的工艺尺寸进行计算， 计算圆整得塔径 DT=1.0m， 塔高 47.1m。 进而对塔的流体力学性能进行验算，利用塔设备的强度求塔体厚度， 最后对塔的稳定性进行验算，使之符合设计要求。 关键词： 浮阀塔 精馏塔 最优回流比 尺寸计算 强度验算 AbstractAbstrac
2、t The design use the float valve tower distilling and seperating the ethanol-water solution.At first ,we find some necessary data and then use “AutoCAD” to make a drawing and obtain our minimum reflux ratio.Next ,we establish the pattern between the reflux ratio and the total cost by economic calcul
3、ation,and then we make a program of C language to select our optional reflux ratio.The theoretical plate number of our 化工原理课程设计 板式精馏塔设计 2 tower is 55,and the optional reflux ratio is 2.2476.We also have calculated the size of the tower and the plate and we obtain that the diameter of the tower is 1
4、meter ,the height of the tower is 47.1meters.After the liquid mechanic calculation of the tower ,it is suitable to the capable of operating of this floating valve tower.By calculating the intensity of the tower ,we can get the thickness of the tower,and the thickness should meet the indensity. Key words:float valves optional reflux ratio liquid mechanic calculation ethanol-water solution 1 1、概述、概述 精馏是通过气液两相的直接接触， 利用组分的挥发度的不同， 使 易挥发组分由液相向
