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神头第一发电厂锅炉一次风管路系统T型分叉管结构存在较大的煤粉分配不均,引起炉内火焰中心偏斜,炉膛温度和氧的质量分数分布严重不均。炉内前墙结焦严重、炉膛出口烟温偏高、高温受热面超温、减温水量大、排烟温度高等问题,与四角一次风管风粉不均有关。加装六通道低阻力导流式分配器后,炉前和炉后支管的粉量比从1.45￣1.75降低到1.10￣1.20,煤粉细度(R90)差值从5%￣7%降到1%,煤粉分配的均匀性大大提高,炉内燃烧工况明显好转,过热器和再热器减温水量分别减少29t/h和7.76t/h,高温受热面壁温降低3￣5℃,排烟温度降低6￣8℃,炉内结焦现象减轻,吹灰次数减少,锅炉运行的安全性和经济性明显提高。
There is a large uneven distribution of pulverized coal in the T-shaped bifurcated pipe structure of Shentou No.1 Power Plant Boiler Primary Air Duct, causing the flame center in the furnace to deflect, and the furnace temperature and oxygen mass fraction distribution are seriously uneven. Furnace front wall coking serious furnace outlet flue gas temperature is too high, high temperature heating surface over-temperature, large amount of water temperature, exhaust gas temperature and higher problems, and four corners of a duct wind powder uneven. After the installation of six-channel low-resistance diversion distributor, the powder ratio in the front and the back of the furnace decreased from 1.45 to 1.75 to 1.10 to 1.20, and the difference in fineness of coal (R90) dropped from 5% to 7% 1%, the uniformity of pulverized coal distribution greatly improved, the furnace combustion conditions improved significantly reduce the superheater and reheater water were reduced by 29t / h and 7.76t / h, high temperature heating surface temperature decreased 3 ~ 5 ℃, Exhaust gas temperature is reduced 6 ~ 8 ℃, reduce coke phenomenon in the furnace, reduce the number of blowing ash, boiler operation safety and economic significantly improved.