间歇精馏无回流操作过程的模拟研究  

Simulating Study on No reflux Process of Batch Rectification

作　　者：李文秀[1] 胡国良[1] 张万忠[1] 

机构地区：[1]沈阳化工学院化学工程系

出　　处：《沈阳化工学院学报》1998年第3期210-215,共6页Journal of Shenyang Institute of Chemical Technolgy

基　　金：辽宁省自然科学基金

摘　　要：建立了间歇精馏无回流操作过程的数学模型，采用四阶龙格库塔法求解初值问题，计算无回流开工过程及间歇精馏脉动操作过程中无回流周期内各塔板浓度变化的动态特性．结果表明，无回流开工与以往无浓度梯度开工过程相比，可缩短开工时间；对间歇精馏脉动操作过程的模拟计算结果表明，无回流操作可使塔内轻组分迅速上移，但塔内浓度梯度受到破坏．The mathematic model of no reflux process of batch rectification has been established in this paper. Four steps Runge Kutta method has been adopted to solve the initial value problem.The dynamic characteristic of concentration change on plates of batch rectification column in no reflux start up process and in no reflux period of pulse operation process have been calculated. The result indicates, the start up time of no reflux process is shorter than that of without concentration gradient initial condition process. In no reflux period of pulse rectification process, volatilizable component moves up to the top of column rapidly, but the concentration gradient along column is destroyed simultaneously.

关 键 词：间歇精馏 无回流操作 模拟 精馏 精馏塔 

分 类 号：TQ028.13[化学工程] TQ051.81