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Ⅱ-59型锅炉(D_K=990吨/时,рпе=255公斤/厘米~2,Тпе=545/545℃)设计燃用莫斯科褐煤。锅炉装有32只直流式煤粉燃烧器,沿炉膛高度分二层对冲水平布置在侧墙上。燃烧器出口截面设计成长方形,高为1200毫米,宽为380毫米(图1a)。沿燃烧器高度开有三条窄缝:送二次风的中间窄缝宽177毫米和供送气粉混合物的边上二个窄缝宽为101毫米。燃烧器具有长500毫米的预混段。下层燃烧器两侧都装有蒸汽雾化重油喷嘴。锅炉按设计工况运行时,发现燃烧器喷
Type II-59 boilers (D_K = 990 t / h, рпе = 255 kg / cm², Тпе = 545/545 ° C) are designed to burn Moscow lignite. The boiler is equipped with 32 DC pulverized coal burners arranged on the side wall at two levels along the height of the hearth. The cross section of the burner outlet is designed as a rectangle with a height of 1200 mm and a width of 380 mm (Figure 1a). There are three narrow slits along the height of the burner: a narrow middle slit of 177 mm for the secondary air and two narrow slits of 101 mm on the sides of the mixture for the supply air. The burner has a 500 mm pre-mixed section. Both sides of the lower burner are equipped with steam atomized heavy oil nozzle. When the boiler was operated according to the design conditions, it was found that the burner was sprayed