基于分离系数校正的稀土萃取流程模拟

由于基于稀土萃取机理的流程仿真模型没有考虑萃取槽的萃取效率,导致模型输出的各级组分含量难以符合工业实际工况,为此,本文将机理模型与数据驱动的方法相结合,建立基于分离系数校正的稀土萃取流程模拟。首先,在相对分离系数的稀土萃取流程机理模型的基础上,引入分离系数校正值,实现对稀土萃取机理模型的扩充;其次,运用数据驱动方法,利用斐波那契树优化算法对各级校正值进行优化求解,并使用MATLAB GUI,开发稀土萃取流程模拟系统;最后,结合工业现场实际数据,验证本文流程模拟在工况改变时的动态性能,结果表明本文所建流程模拟符合稀土萃取流程实际工况。

Simulation of rare earth extraction process based on separation coefficient correction

Because the process simulation model based on rare earth extraction mechanism does not consider the extraction efficiency of the extraction tank, it is difficult for the content of the components output by the model to meet the actual industrial conditions. Therefore, this paper combines the mechanism model with a data-driven method to establish the rare earth extraction process simulation which based on the correction of separation coefficient. Firstly, on the basis of the rare earth extraction process mechanism model with relative separation coefficient, the correction value of separation coefficient is introduced to expand the mechanism model of rare earth extraction. Secondly, the data-driven method and Fibonacci tree optimization algorithm(FTO) are used to optimize the correction value at all levels, and MATLAB GUI is used to develop the rare earth extraction process simulation system. Finally, according to the actual data of industrial field, the process of rare earth extraction is simulated and verified when the working condition is changed. The results show that the simulation of the process constructed in this paper conforms to the actual working conditions of the rare earth extraction process.