拉格朗日插值算法在图解法精馏塔设计中的应用  

The application of Lagrange's interpolation applied to the design rectifying tower with graphic method

作　　者：吴晓艺[1] 王静文[1] 司秀丽[1] 

机构地区：[1]沈阳工业大学理学院,辽宁沈阳110178

出　　处：《计算机与应用化学》2009年第3期311-314,共4页Computers and Applied Chemistry

摘　　要：图解法计算精馏塔理论塔板数是精馏塔设计中常用的一种方法,有简单、直观的特点,但精度相对较差,为提高图解法计算理论塔板数的精度,本文研究二元理想体系的图解法精馏塔设计,采用拉格朗日插值算法拟合汽液平衡曲线,通过在VC++环境中建立相关的类,再计算液相中的组分得到与之平衡的气相中的组分,拟合出汽液平衡曲线,同时分析相应点的误差,并通过软件设计实现q线、精馏段操作线、提馏段操作线的数值计算和曲线的绘制,从而完成了理论塔板数计算,为精馏塔设计提供了较好的数值计算方法,提高了图解法计算理论塔板数的精度。The graphic method applied to the calculating of number of theoretical plates of rectifying tower is usually used in the design of rectifying tower.The method is simple and intuitive,but the accuracy of the method is poor.In order to improve the accuracy of calculating the theoretical plates of rectifying column,this study is on account of graphic method of the design of rectifying binary ideal mixture.Lagrange s interpolation was used for equilibrium curve-fitting.Interrelated class was created in VC++.It ...

关 键 词：精馏塔设计 拉格朗日插值法 汽液平衡 曲线拟合 

分 类 号：TQ051.81[化学工程]