热风点火技术在济钢400m^2烧结机的应用

Application of Hot Air Ignition Technology in Jinan Steel’s 400m^2 Sintering Machine

结合现场实际情况,对济钢400m2烧结机实施了热风点火工程改造。在环冷机2#和3#烟囱之间的烟罩上开口,安装管道,新增高温除尘器、高效耐高温助燃风机、调节阀门、钢结构支架、电气及仪表设备等。热风点火系统投用后,热风温度稳定在240～300℃,点火温度提高到了1100℃以上,混合煤气单耗降低了20.09%,年效益达370.33万元。

Combining with actual condition at the field, the reforming of hot air ignition project of Jinan Steel＇ s 400 m2 sintering machine was actualized. The seam was opened in the fume hood between No.2 and No.3 chimneys of annular cooler for installing the pipeline. A series of new equipment were increased, such as high-temperature precipitator, high performance high temperature combustion-supporting fan, regulating valves, steel structure support, electrical installation and instrumentation. After the commissioning of the system, the hot air temperature stabilized in 240-300 ℃, the ignition temperature increased to 1 1130℃above, the unit consumption of mixed gas decreased by 20.09% and the annual benefits reached 3.703 3 million Yuan RBM.