异丁醇生产中精馏新型塔控制方案

Control Design Analysis of Isobutyl Alcohol Fractionating Rectifying Tower

提出了异丁醇生产中精馏塔的新型控制方案,该方案将精馏塔控制系统分为3个子系统,即入料控制子系统、精馏段控制子系统和提馏段控制子系统。精馏段和提馏段的控制通过调节回流量的大小(即控制回流比的数值)来完成相应的工艺控制任务,采用KMM可编程控制器进行控制,通过MATLAB仿真,对所选择的控制方案进行了模拟仿真运行,结果表明,方案正确、可行,完全可以用于工业生产中。

Elaborates the control of isobutyl alcohol fraetionating reetifying tower. The eontrol system ean be divided into three subsystem , i.e. feed material eontrol subsystem, distillation stage control subsystem, stripping stage eontrol subsystem. The eontrol of distillation stage and stripping stage eompletes eorresponding teehnology control task through regulating the back flow volume （i. e. control reflux ratio）. The controller adopts KMM PLC. By the simulation, the result shows that the seheme is eorreet and feasible, ean be applied in the production.