高效低NO_x液态排渣煤粉燃烧器煤种适应性探讨
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摘要
通过煤质特性对高效低NO_x液态排渣煤粉燃烧器适应性的分析,确定了适用于燃烧器的煤种特性指标范围:热值不低于21MJ/kg,水分7%～11%,煤粉细度80～200目,挥发分23%～40%,灰分6%～25%,灰熔点1100～1430℃。相对市场上现有的煤粉工业锅炉对煤粉质量的苛刻要求,液排渣煤粉燃烧器对煤粉的技术要求相对宽松,煤种适应性有所拓宽,因此其经济性、安全性和可获得性更好。
Through the analysis of the adaptability of coal characteristics to pulverized coal burner of high efficiency and low NO_x slag-tap, the adaptability range of coal sorts of burner was determined: low calorific value not less than 21 MJ/kg, moisture content 7%～11%, coal fineness 80 mesh～200 mesh, volatile content 23%～40%, ash content 6%～25%, ash melting temperature 1100～1430℃. The results show that compared with the stringent requirements for quality of pulverized coal of pulverized coal industrial boilers in the market, the technical requirements of slag-tap pulverized coal burner are relatively loose, and the adaptability of coal sorts is broadened, therefore, better economy, security and availability can be achieved.
Through the analysis of the adaptability of coal characteristics to pulverized coal burner of high efficiency and low NO_x slag-tap, the adaptability range of coal sorts of burner was determined: low calorific value not less than 21 MJ/kg, moisture content 7%～11%, coal fineness 80 mesh～200 mesh, volatile content 23%～40%, ash content 6%～25%, ash melting temperature 1100～1430℃. The results show that compared with the stringent requirements for quality of pulverized coal of pulverized coal industrial boilers in the market, the technical requirements of slag-tap pulverized coal burner are relatively loose, and the adaptability of coal sorts is broadened, therefore, better economy, security and availability can be achieved.
引文
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[3]张乾熙,贾明生.粉煤低尘燃烧器覆渣炉衬的传热特性分析[J].工业加热,2009,38(2):31-33.
[4]蔡力宏,吴跃,杨磊等.GSP气化炉水冷壁以渣抗渣煤质适应性研究[J].现代化工,2017,37(12):178-181.
[5]贾明生,张乾熙.影响煤灰熔融性温度的控制因素[J].煤化工,2007,35(3):1-5.
[6]李相军,魏学新,牛巧霞.粉煤加压气化工艺对煤质的要求[J].河南化工,2008,25(6):45-47.
[7]李德侠.煤灰熔融及粘温特性的研究[D].上海:华东理工大学,2012.
[8]王强,谷丽.液排渣粉煤燃烧器用煤选择及增钙对煤灰渣熔融特性影响的研究[J].工业炉,1992,(1):27-33.
[9]陈亚飞,姜英,陈文敏等.中国煤中氮含量的分布研究[J].洁净煤技术,2008,14(5):71-73.
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[11]汪林杰,贾明生.一种有效改善煤粉结块问题的方法及其应用[J].冶金能源,2013,32(2):17-20.
[12]李化,高聪,苏丹等.烟煤粉爆炸特性实验研究[J].四川大学学报(工程科学版),2009,41(6):79-83.
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