软测量在检测碳酸化塔中CO_2浓度的应用

利用自适应滤波辨识的方法 ,构造了联碱碳酸化塔中CO2 浓度的估计器 ,解决了在碳酸化过程中不能在线检测碳酸化塔中CO2 浓度的难题 ,对碳酸化过程的有效控制和节约检测成本有着积极的意义。

Application of Soft Measurement for CO2 Concentration in Carbonator Tower

In a carbonator tower, the change of CO 2 concentration can be reflected by the alteration of some other parameters, such as temperature, pressure, and gas flow in the tower. Based on this consideration, an estimator of CO 2 concentration in the tower was formed, which gives the CO 2 concentration by calculating the values of temperature, pressure, and gas flow with an algorithm. Considering the time varying environment of the tower, the estimator was designed with self-adaptive attribute, so that it can work effectively under varying environment. By using the estimator, the value of CO 2 concentration in the tower can be predicted online. It not only provides useful information for control, but also saves the cost for measuring CO 2 concentration.