随着生产的发展,大冶炼钢厂反射炉床面积已由180米~2增加到270米~2,粉煤燃烧器和供风系统也相应改造(表1),这对床能力和月产水平的提高起了很大的作用,但风量、风压选择偏高。为满足生产工艺的要求,只能采取关小进风蝶阀(仅开启20°)的措施,因而造成进风管道压力降很高(720.8毫米水柱),电能消耗大的问题。 With the development of production, the area of ​​the reflecting hearth of Daye Steel Plant has been increased from 180m ~ 2 to 270m ~ 2, and the pulverized coal burner and air supply system have also been transformed accordingly (Table 1). The capacity of the bed and the monthly capacity The level of play a great role, but the wind, wind pressure high. In order to meet the requirements of the production process, only the small butterfly valve (20 ° ON) can only be adopted. As a result, the pressure drop of the inlet pipe is very high (720.8 mm water column) and the power consumption is high.