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循环流化床锅炉新型悬吊屏周边气固流动特性实验研究

DOI: 10.13334/j.0258-8013.pcsee.2015.08.016, PP. 1962-1968

Keywords: 循环流化床,气固流动特性,受热面,,□”,形屏

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Abstract:

针对循环流化床炉膛中一种新型“□”形悬吊换热屏(“□”形屏),采用光纤探针测试其周边气固流动特性,研究空截面气速、静止床料高度、“□”形屏宽和出口尺寸对其周边气固流动的影响。结果表明,“□”形屏内上部颗粒体积分数径向呈“~”型分布,中、下部呈“?”型分布;屏内上、中、下部颗粒轴向速度径向均呈“?”型分布,中、上部屏内壁面颗粒基本向下流动,下降流下降速度随空截面气速的增大而增大;屏周边颗粒体积分数随空截面气速和静止床料高度的增大而增大;“□”形屏出口尺寸对相应屏内区域颗粒流动有影响;对于循环流化床锅炉,“□”形屏宽对应有一合理范围。

References

[1]  程乐鸣,岑可法,倪明江,等.循环流化床锅炉炉膛热力计算[J].中国电机工程学报,2002,22(12):146-151. Cheng Leming,Cen Kefa,Ni Mingjiang,et al.Thermal calculation of a circulating fluidized bed boiler furnace[J].Proceedings of the CSEE,2002,22(12):146-151(in Chinese).
[2]  程乐鸣,周星龙,郑成航,等.大型循环流化床锅炉的发展[J].动力工程,2008,28(6):817-826. Cheng Leming,Zhou Xinglong,Zheng Chenghang,et al.Development of large-scale circulating fluidized bed boiler[J].Journal of Power Engineering,2008,28(6):817-826(in Chinese).
[3]  吕俊复,张缦,杨海瑞,等.简约型660MW超超临界循环流化床锅炉设计开发[J].中国电机工程学报,2014,34(5):741-747. Lü Junfu,Zhang Man,Yang Hairui,et al.Conceptual design of a simplified 660MW ultra-supercritical circulating fluidized bed boiler[J].Proceedings of the CSEE,2014,34(5):741-747(in Chinese).
[4]  Darling S L,Asikainen A,Shibagaki G.Experience with in-furnace surface in CFB boilers[J].ASME,NEW YORK,(USA).,1995,1:9-16.
[5]  程乐鸣,周星龙,夏云飞,等.600 MW循环流化床悬吊屏气固流动与传热特性[C]//全国电力行业CFB机组技术交流服务协作网技术交流文集.成都:全国循环流化床协作网第十届年会,2011:148-152. Cheng Leming,Zhou Xinglong,Xia Yunfei,et al.Gas-solid flow and heat transfer of suspended heat transfer surfaces in a 600 MW CFB furnace[C]//The 10th Annual Conference of National CFB Collaboration,Chengdu,China,2011:148-152(in Chinese).
[6]  程乐鸣,王勤辉,方梦祥,等.循环流化床锅炉炉膛圈状悬吊换热屏,中国:201310142880.1[P].2013-04-22. Cheng Leming,Wang Qinhui,Fang Mengxiang,et al.□-shaped suspended heat transfer surface in CFB boiler furnaces,China:201310142880.1[P].2013-04-22(in Chinese).
[7]  Dutta A,Basu P.An experimental investigation into the heat transfer on wing walls in a circulating fluidized bed boiler[J].International Journal of Heat and Mass Transfer,2002,45(22):4479-4491.
[8]  Cheng L M,Zhou X L,Huang C,et al.Heat transfer of suspended surface in a CFB with 6 cyclones and a pant-leg[C]//21th International Conference on Fluidized Bed Combustion,Naples,Italy,2012.
[9]  胡南,王巍,姚宣,等.38 m/54 m高循环流化床床内流体动力特性研究[J].中国电机工程学报,2009,29(26):7-12. Hu Nan,Wang wei,Yao Xuan,et al.Study on gas-solids flow properties in the 38 m/54 m riser of circulating fluidized bed[J].Proceedings of the CSEE,2009,29(26):7-12(in Chinese).
[10]  马志刚,方梦祥,骆仲泱,等.矩形截面流化床内颗粒运动可视化试验研究[J].中国电机工程学报,2007,27(14):24-30. Ma Zhigang,Fang Mengxiang,Luo Zhongyang,et al.Visual measurement of particle movement in rectangular circulating fluidized bed[J].Proceedings of the CSEE,2007,27(14):24-30(in Chinese).
[11]  王超,程乐鸣,周星龙,等.600 MW超临界循环流化床锅炉炉膛气固流场的数值模拟[J].中国电机工程学报,2011,31(14):1-7. Wang Chao,Cheng Leming,Zhou Xinglong,et al.Numerical simulation of gas-solid hydrodynamics in a 600 MW supercritical circulating fluidized bed boiler furnace[J].Proceedings of the CSEE,2011,31(14):1-7(in Chinese).
[12]  Gupta A V S S K S,Reddy B V.Bed-to-wall heat transfer modelling in the top region of a CFB riser column with abrupt riser exit geometries[J].International Journal of Heat and Mass Transfer,2005,48(21-22):4307-4315.
[13]  Hartge E U,Budinger S,Werther J.Spatial effects in the combustion chamber of the 235 MW CFB boiler:Turow NO.3[C]//Circulating Fluidized Bed Technology VIII,Hangzhou,China,2005.
[14]  Kim S W,Kirbas G,Bi H,et al.Flow structure and thickness of annular downflow layer in a circulating fluidized bed riser[J].Powder Technology,2004,142(1):48-58.
[15]  周星龙,程乐鸣,夏云飞,等.600 MW循环流化床锅炉水冷壁和中隔墙传热特性[J].中国电机工程学报,2014,34(2):225-230. Zhou Xinglong,Cheng Leming,Xia Yunfei,et al.Heat transfer characteristic of water wall and partition wall in a 600 MW CFB boiler[J].Proceedings of the CSEE,2014,34(2):225-230(in Chinese).
[16]  姚宣,杨石,晁俊楠,等.循环流率对循环流化床回路压降影响的实验研究[J].中国电机工程学报,2010,30(20):1-6. Yao Xuan,Yang Shi,Chao Junnan,et al.Experiment study of solids circulating rate’s effect on the pressure loop in circulating fluidized bed[J].Proceedings of the CSEE,2010,30(20):1-6(in Chinese).
[17]  张瑞卿,杨海瑞,吕俊复.应用于循环流化床锅炉气固流动和燃烧的CPFD数值模拟[J].中国电机工程学报,2013,33(23):75-83. Zhang Ruiqing, Yang Hairui, Lü Junfu.Application of CPFD approach on gas-solid flow and combustion in industrial CFB boilers[J].Proceedings of the CSEE,2013,33(23):75-83(in Chinese).
[18]  黄晨.大型循环流化床锅炉炉内受热面对流传热特性研究[D].杭州:浙江大学,2012. Huang Chen.Research on convective heat transfer characteristics of heating surfaces in a large-scale CFB boiler[D].Hangzhou:Zhejiang University,2012(in Chinese).
[19]  周星龙,程乐鸣,张俊春,等.六回路循环流化床颗粒浓度及循环流率实验研究[J].中国电机工程学报,2012,32(5):9-14. Zhou Xinglong,Cheng Leming,Zhang Junchun,et al.Experimental study on solids suspension density and solids circulating rate in a CFB with six circulating loops[J].Proceedings of the CSEE,2012,32(5):9-14(in Chinese).
[20]  Zhou X L,Cheng L M,Wang Q H,et al.Non-uniform distribution of gas-solid flow through six parallel cyclones in a CFB system:An experimental study[J].Particuology,2012,10:170-175.
[21]  Werther J.Measurement techniques in fluidized beds[J].Powder Technology,1999,102(1):15-36.

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