典型煤种结渣的数值模拟研究

上海交通大学学报（自然版） ›› 2013, Vol. 47 ›› Issue (03): 364-369.

典型煤种结渣的数值模拟研究

王振, 胡瓅元, 罗永浩, 王苑

（上海交通大学机械与动力工程学院，上海 200240）

收稿日期:2012-04-13 出版日期:2013-03-28 发布日期:2013-03-28
基金资助:
上海市科委资助项目（08DZ1201503）

Numerical Simulation of Ash Deposit of Typical Coal in Pulverized Coal-Fired Boiler

WANG Zhen, HU Li-Yuan, LUO Yong-Hao, WANG Yuan

(School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)

Received:2012-04-13 Online:2013-03-28 Published:2013-03-28

摘要/Abstract

摘要： 建立了与气固两相流动燃烧模型相耦合的飞灰沉积模型.对一台四角切圆锅炉燃用2种典型煤种（神木煤和淄博煤）时的结渣特性进行了数值模拟，对比了不同的颗粒黏度计算模型，预测了炉膛内不同位置的飞灰沉积量和厚度.模拟结果显示，前墙20～25 m高度附近结渣最严重，燃用神木煤时结渣比淄博煤更多.通过分析认为，采取合理工况，掺烧结渣倾向低的煤种可以有效减轻结渣.

关键词: 煤粉锅炉, 数值模拟, 结渣, 飞灰沉积, 典型煤种

Abstract: A numerical model coupled with comprehensive combustion code to predict ash deposition in a coal-fired boiler was developed. The results show serious slagging is mainly at 20-25 meter height of the front wall, because of the more rapid gas flow and higher temperature, and burning Shenmu coal will result in more slagging than Zibo coal. The predictions indicate slagging can be alleviated by proper operating conditions and using low slagging-tendency coals.

Key words: pulverized coal-fired boiler, numerical simulation, slagging, ash deposit, typical coal

中图分类号:

TK 224

王振, 胡瓅元, 罗永浩, 王苑. 典型煤种结渣的数值模拟研究[J]. 上海交通大学学报（自然版）, 2013, 47(03): 364-369.

WANG Zhen, HU Li-Yuan, LUO Yong-Hao, WANG Yuan. Numerical Simulation of Ash Deposit of Typical Coal in Pulverized Coal-Fired Boiler[J]. Journal of Shanghai Jiaotong University, 2013, 47(03): 364-369.

参考文献

［1］Wang H，Harb J N. Modeling of ash deposition in largescale combustion facilities burning pulverized coal［J］.
Progress in Energy and Combustion Science, 1997, 23(3): 267282.
［2］Fan J, Zha X, Sun P, et al. Simulation of ash deposit in a pulverized coalfired boiler［J］. Fuel, 2001, 80(5): 645
654.
［3］Mueller C, Selenius M, Theis M, et al. Deposition behaviour of molten alkalirich fly ashes——Development of a
submodel for CFD applications［J］. Proceedings of the Combustion Institute, 2005, 30(2): 29912998.
［4］Strandstrm K, Mueller C, Hupa M. Development of an ash particle deposition model considering buildup and removal
mechanisms［J］. Fuel Processing Technology, 2007, 88(1112): 10531060.
［5］You C, Zhou Y. Effect of operation parameters on the slagging near swirl coal burner throat［J］. Energy & Fuels,
2006, 20(5): 18551861.
［6］Wang X, Zhao D, He L, et al. Modeling of a coalfired slagging combustor: Development of a slag submodel［J］.
Combustion and Flame, 2007, 149(3): 249260.
［7］Fang Q, Wang H, Wei Y, et al. Numerical simulations of the slagging characteristics in a downfired,
pulverizedcoal boiler furnace［J］. Fuel Processing Technology, 2010, 91(1): 8896.
［8］Baxter L L. Ash deposition during biomass and coal combustion: a mechanistic approach［J］. Biomass and Bioenergy,
1993, 4(2): 85102.
［9］Walsh P M, Sayre A N, Loehden D O, et al. Deposition of bituminous coal ash on an isolated heat exchanger tube:
Effects of coal properties on deposit growth［J］. Progress in Energy and Combustion Science, 1990, 16(4): 327345.
［10］Watt J D, Fereday F. The flow properties of slags formed from the ashes of British coals: Part 1, Viscosity of
homogeneous liquid slags in relation to slag composition［J］. J Inst Fuel, 1969, 42: 99103.
［11］Urbain G, Cambier F, Deletter M, et al. Viscosity of silicate melts［J］. Trans J Br Ceram Soc,1981, 80(9):
139141.
［12］Senior C，Srinivasachar S. Viscosity of ash particles in combustion systems for prediction of particle sticking［J］
. Energy & Fuels, 1995, 9(2): 277283.
［13］Degereji M U Ingham D B, Ma L, et al. Prediction of ash slagging propensity in a pulverized coal combustion furnace
［J］. Fuel, 2012, 101(11): 171178.

[1]	丁恩宝, 常晟铭, 孙聪, 赵雷明, 吴浩. 半浸桨不同半径切面入水的水动力特性[J]. 上海交通大学学报, 2022, 56(9): 1188-1198.
[2]	吴怀娜, 冯东林, 刘源, 蓝淦洲, 陈仁朋. 基于门式抗浮框架的基坑开挖下卧隧道变形控制[J]. 上海交通大学学报, 2022, 56(9): 1227-1237.
[3]	刘谨豪, 严远忠, 张琪, 卞荣, 贺雷, 叶冠林. 地面堆载对既有隧道影响离心试验和数值分析[J]. 上海交通大学学报, 2022, 56(7): 886-896.
[4]	孙健, 彭斌, 朱兵国. 无油双涡圈空气涡旋压缩机的数值模拟及试验研究[J]. 上海交通大学学报, 2022, 56(5): 611-621.
[5]	秦汉, 伍彬, 宋玉辉, 刘金, 陈兰. 细长体高速风洞超大攻角支撑干扰数值分析[J]. 空天防御, 2022, 5(3): 44-51.
[6]	薛飞, 王誉超, 伍彬. 高速飞行器后向分离特性研究[J]. 空天防御, 2022, 5(3): 80-86.
[7]	杜登轩 , 乐绍林 , 周欢 , HtayHtayAung , 喻国良. 均匀来流中承台相对埋深对复合桩墩局部水动力及冲刷的影响 [J]. 海洋工程装备与技术, 2022, 9(2): 64-71.
[8]	郑高媛, 赵亦希, 崔峻辉. 车身用铝饰条拉弯成形面畸变缺陷形成规律[J]. 上海交通大学学报, 2022, 56(1): 53-61.
[9]	金戈, 范珉, 周振栋, 谭勇, 钟小波. 升降式止回阀动态特性分析与改进[J]. 上海交通大学学报, 2021, 55(S2): 110-118.
[10]	徐德辉, 顾汉洋, 刘莉, 黄超. 新型锥形式旋叶汽水分离器热态试验与数值研究[J]. 上海交通大学学报, 2021, 55(9): 1087-1094.
[11]	刘恒, 伍锐, 孙硕. 非均匀流场螺旋桨空泡数值模拟[J]. 上海交通大学学报, 2021, 55(8): 976-983.
[12]	王超, 刘正, 李兴, 汪春辉, 徐佩. 自由状态冰块尺寸及初始位置参数对冰桨耦合水动力性能的影响[J]. 上海交通大学学报, 2021, 55(8): 990-1000.
[13]	李岩松, 丁鼎倩, 韩东, 刘静, 梁永图. 起伏输油管道临界完全携积水油速数值模拟[J]. 上海交通大学学报, 2021, 55(7): 878-890.
[14]	赵朋飞, 薛昕, 杨成. 模拟碱骨料反应引起的箍筋端部锚固退化对钢筋混凝土梁受剪性能的影响[J]. 上海交通大学学报, 2021, 55(6): 681-688.
[15]	张源, 李范春, 贾德君. 点阵压气机叶轮的设计与3D打印仿真[J]. 上海交通大学学报, 2021, 55(6): 729-740.