蓄热式连续加热炉燃烧控制技术的应用

来源期刊：冶金自动化2009年第5期

论文作者：张志强 胡民华

文章页码：38 - 41

关键词：加热炉； 蓄热式燃烧； 时序； 小流量控制

Key words：heating furnace； regenerative combustion； time sequencing； small flow control

摘    要：宝山钢铁股份有限公司热轧厂三热轧分厂的蓄热式连续加热炉采用进口PLC控制系统实现各控制功能,其控制模型和控制程序由国内设计院设计制作完成,但在使用过程中出现了蓄热箱温度不均衡、小流量控制效果差以及蓄热箱连续超温等问题。针对此类问题,我们对控制功能进行了优化,重新建立了蓄热换向控制、小流量控制以及蓄热箱温度控制等模型并编写了相关控制程序。实施后效果明显,基本消除了上述问题,改善了控制效果,同时将温度响应性能提高了30%以上。本文通过对蓄热燃烧应用过程中的关键控制技术的分析,探讨了最佳全炉蓄热燃烧控制方法。

Abstract: Imported PLC control system was adopted in regenerative continuous heating furnace of Hot Strip Rolling Plant,Baoshan Iron & Steel Co.,Ltd.,to achieve various control functions.Control model and program were designed by the domestic design institute.But,in running process there were some problems,such as,uneven temperature in heat storage box,bad effect of small flow control,and over-temperature phenomenon in heat storage box,etc.For this situation,control functions were optimized,the models for regenerative inverting control,small flow control and temperature control of heat storage box were re-established,and relevant control program was accomplished.After improvement,effect was very good,and above mentioned problems were resolved.At the same time,temperature response was increased more than 30%.Through analysis of key control technology in regenerative combustion process,optimizing regenerative combustion control method for entire furnace is discussed.