砂状氧化铝生产首槽控制温度预报模型的计算机实现

砂状氧化铝的稳定生产主要通过控制首槽温度来实现,尽管建立了多种控制模型,由于实际生产的复杂性,而未能应用于工业控制。本文应用以Al(OH)_3粒度分布规律、热力学和动力学为基础的半经验的首槽控制温度预报模型,对砂状氧化铝生产中首槽控制温度进行预报。运用了线性回归及多元非线性回归原理,根据砂状氧化铝正常生产过程工艺参数,对模型参数进行回归并实时修正,得到模型参数a_1,b_1,a_2,b_2,A_0,A_2,K_0,K_1,K_2,K_3,以C Builder为开发平台,成功地开发了用于砂状氧化铝生产中预报首槽控制温度的应用软件。在实际生产中用于指导首槽温度控制,效果良好。

Implementation and application of the prediction model of the first-trough tem perature control in sandy Al2O3 production

The first-trough control temperature in sandy Al2O3 producing was accurately predicted by using proper modei parameters ac-quired by nonlinear regression and adjusted according to the data from production. The prediction modei of the first-through temperature-control based on the stability of the particle distribution in practice of sandy Al2O3 production, thermodynamics and kinetics includes three semi-empirical equations. And the software with on-time calculation of the modei parameters and prediction of the first-trough temperature developed with C Builder has been proved to be friendly reliably available in practice.