高炉喷煤系统控制模型研究

The Study of Pulverized Coal Injection System of BF Control Mode

安钢高炉喷吹煤粉系统 ,由于自动控制数学模型精度低 ,一直未能很好地实现自动喷吹 ,喷煤量波动较大 ,严重地影响了高炉炉况顺行和喷煤水平的提高。通过对现场采集的大量实验数据进行整理、分析与研究 ,提出喷煤量分别与罐压、补气量之间的可能关系 ,建立其在三维情况下的数学模型 ,在MATLAB环境下 ,作出其三维拟合曲面。利用二元回归方程计算结果与实测值进行比较 。

Because the design of automatic control system of Anyang Iron & Steel Company pulverized coal injection(PCI) system for BF was not ideal, so automatic PCI never come true, and the quantity of PCI varied largely, all of these produce serious impact on the smelting process and improvement of PCI rate.Analysis and study for a large number of data from production spot, put forward the possible relation of PCI quantity with the tank pressure and the additional gas quality, experiment data,could judge the significance of mathematic model.Established three-dimension mathematic model and draw the three-dimensional fit curved surface on MATLAB.The compare ion of two dimensional regression equation calculation results with experiment data could prove the significance of three dimension mathematic model.