加热炉汽化系统技术改造及优化

Technical Modification and Optimization of Reheating Furnace Vaporization System

天津轧一联升带钢有限公司连续推钢式加热炉经常发生裂管、塌炉事故,通过分析并经理论计算确定问题发生的原因主要是由于炉内纵、横水管管径偏小;加热炉支撑耐火砖墙受推钢时产生的震动易松散而失去支撑作用;炉尾区域汽化回路汽化循环效果差;炉尾纵水管没有拉紧装置等。针对上述原因提出了技术改造方案并实施,通过加大水管管径、增加横支撑水管和炉尾纵水管拉紧装置、增加纵水管上耐热滑块厚度和调整汽化回路布局,使问题得到有效解决。

Through analysis and theoretical circulation,the causes of supporting tube cracking and furnace collapse accidents of pusher-type continuous heating furnace at Tianjin Zhayi-Liansheng Steel Strip Company were recognized to be small diameter of longitudinal and horizontal supporting tube, supporting refractory block wall collapse because of vibration when steel billets were pushed, bad vaporizing circulation effects of vaporization loop at furnace tail area and no tension apparatus of longitudinal supporting tube at furnace tail, etc. Technological reformation scheme was put forward and implemented, the problems were solved effectively through increasing supporting tube diameter, adding horizontal support tube and tension apparatus of longitudinal supporting tube at furnace tail, increasing the thickness of heat-resisting slider above the longitudinal supporting tube and rearrange vaporization loop, etc.