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我厂~#12、~#13炉系上海锅炉厂生产的50415型配125MW机组的420t/h锅炉,分别于1985、1986年年底投产。该型锅炉采用中间储仓式热风送粉系统,配DTM320/580型筒式钢球磨两台,制粉乏气作为三次风送入炉膛。本锅炉采用四角布置直流摆动式煤粉燃烧器,炉膛尺寸29500×8840×9600mm(高×深×宽),燃烧器一、二、三次风喷口自上而下布置为:三、二、二、一、二、一、一、二。一、二、三次风风率、风温、风速设计值如表1所示。设计煤种为淮北烟煤。一、运行中存在的问题及原因分析1.燃烧器附近结焦50415型锅炉
I plant ~ # 12, ~ # 13 furnace Shanghai Boiler Factory production of 50415 125MW unit 420t / h boiler, respectively, in 1985 and 1986 at the end of production. This type of boiler adopts an intermediate storage type hot air feeding system with two sets of DTM320 / 580 type barrel steel ball milling machines. The boiler uses four corners of the DC swing-type pulverized coal burner, the hearth size 29500 × 8840 × 9600mm (height × depth × width), the burner first, second and third air vents arranged from top to bottom: three, two, One, two, one, one, two. One, two, three times the wind rate, wind temperature, wind speed design value shown in Table 1. Design coal for Huaibei bituminous coal. First, the operation of the existing problems and analysis 1. Burner near the coke 50415 boiler