铝电解设备多模式控制策略研究

Research on Aluminum Electrolytic Equipment Multi-mode Control Strategy

铝电解是一个复杂的工业过程,工艺复杂,干扰强,故障发生频繁,故障类型多,控制难度大。单一模式的控制方式很难使铝电解槽达到最佳的工作状态。文中根据铝电解过程特点,提出了多模式控制方法。根据铝电解过程正常、故障和出铝不同的工作状态,采用不同的控制策略,控制氧化铝加料时间和加料速率。有效的使氧化铝浓度控制在理想值范围,进而使电解槽达到最佳的工作状态,提高了电流效率,节电效果显著,验证了该方法的有效性。

Aluminum electrolysis is a complex industrial process with strong interference, where fault occurs frequently and is difficult to control. It is hard to adjust electrolytic cell in the best working state with single control mode. A multi-mode control method was propesed. The different control strategies were appied according to the different working status of aluminum electrolysis （normal,fault and output aluminum） , so that the control feeding time rate of alumina and control alumina concentration can be controlled in ideal range. The electrolytic cell are working in best state, experimental results show the effectiveness of the proposed method, and it can improve current efficiency and energy-saving effect.