液态排渣炉下炉膛一维热流密度分布特性计算  

ONE DIMENTIONAL HEAT FLUX DISTRIBUTION CHARACTERS IN LOWER FURNACE OF BOILERS WITH WET BOTTOM

作　　者：严响林[1] 徐党旗[1] 聂剑平[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2010年第9期27-29,34,共4页Thermal Power Generation

摘　　要：以某1025t/h液态排渣锅炉为研究对象,对其下炉膛一维热流密度分布情况进行了计算,所得计算结果与下炉膛各段水冷壁吸热量吻合较好。计算表明,烟气温度、热流密度以及水冷壁的吸热热流密度的变化规律基本一致,随着煤粉颗粒的燃烧、热量的释放,烟气温度、热流密度以及水冷壁的吸热热流密度逐渐增加,但到达峰值后又呈下降趋势。Taking a 1 025 t/h boiler with wet bottom as an object to be studied,the one-dimentional heat flux density distribution situation in the lower furnace has been calculated,the result obtained from calculation tallies better with the absorbed heat of water-wall in each section of the lower furnace.The calculation shows that the regularity of variation for flue gas temperature,for heat flux density,as well as for heat flux density of water-wall absorbed heat are basically identical.Along with burning of pulverized coal particles and releasing of heat,the flue gas temperature,the heat flux density,and the heat flux density of water-wall absorbed heat are gradually increased,but the decreasing tendency appeared again after reaching the peak value,providing reference data for hydrodynamic calculation of the water-wall.

关 键 词：液态排渣 锅炉 炉膛 热流密度 分布特性 水动力计算 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]