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本文分析了冲天炉熔炼过程中的变量及其关系,指出冲天炉熔炼过程是一个复杂的随机过程,很难建立普遍适用的数学模型,故采用了能进行在线辨认的自组织控制方法。根据这个控制思想,用微型计算机组成一个最优化控制系统。这个控制系统能实现铁水温度、熔化速度、风量和焦耗等主要变量的检测,实现风量、焦耗等最优工作点的自动寻找和定值控制,使冲天炉在优质、高产、低耗的最优状态稳定运行。生产验证表明,普通冲天炉采用北京焦炭,当总焦耗为12.5％时,铁水温度平均值可稳定达到1480℃;当总焦耗为15.0％时,铁水温度平均值可稳定达到1500℃。借助于最优化控制系统,可以研究冲天炉的熔炼规律。本文给出了一台熔化带直径为1000mm的冲天炉的网状图和主要变量间的回归方程。
This paper analyzes the variables and their relations during the cupola melting process. It points out that the cupola melting process is a complicated random process and it is difficult to establish a universal mathematic model. Therefore, a self-organizing control method that can identify online is adopted. According to this control idea, using micro-computer to form an optimal control system. The control system can detect the main variables such as hot metal temperature, melting speed, air volume and coke consumption, realize the automatic search and setting control of the optimal operating point such as air volume and coke consumption, and make the cupola high quality, high yield and low consumption Optimal state of stable operation. Production verification shows that ordinary cupola Beijing coke, when the total coke consumption of 12.5%, the average temperature of hot metal can be stabilized to 1480 ℃; when the total coke consumption of 15.0%, the average temperature of hot metal can be stabilized to 1500 ℃. With the optimization of control system, you can study the cupola smelting law. This article presents a regression equation between a mesh plot of a cupola with a diameter of 1,000 mm and the main variables.