Study on Start-up Operation of Distillation Column Using Artificial Intelligence

在精馏塔的开车操作方面，我们主要研究了三个方面的内容.利用塔内温度的观测值，可方便地计算出塔内任意时刻的特征函数MT，用于确定从全回流操作到各塔板初始组成相等的稳态操作的最佳切换时间。1.进料通过进料盘供应，直到汽提段中每个塔盘中的滞留物被填满。2.启动全回流操作。3.在合适的切换时刻将回流从全回流操作切换到稳态操作.通过数值计算和实验验证了特征函数在精馏塔温度检测点减少情况下的适用性.作为利用人工智能实现精馏塔自动开车操作的第一步，首先根据精馏塔操作所需的知识进行仿真。

On the start-up operation of distillation column, we studied three subjects.1. A characteristic function MT which is easily calculated at any instant by using the observed values of temperature in the column is useful in determining the optimum switching time from total reflux operation to steady-state operation where the initial composition in each tray is equal in value.The applicability of the characteristic function is examined experimentally for the more realistic startup of a distillation column with following steps. 1. Feed is supplied through the feed tray until holdup in each tray in the stripping section is filled up. 2. Total reflux operation is initiated. 3. Reflux is switched from total reflux operation to steady-state operation at appropriate switching time.2. The applicability of the characteristic function is examined numerically and experimentarlly in the case that the detecting point of temperature in distillation column is reduced.3. For the first step of realizing the automatic start-up operation of distillation using the artificial intelligence, the simullation is carried out based on the knowledge which is necessary in the operation of distillation column.