扩散过滤燃烧火焰特性

doi:10.3969/j.issn.0438-1157.2012.11.017

化工学报 ›› 2012, Vol. 63 ›› Issue (11): 3500-3505.DOI: 10.3969/j.issn.0438-1157.2012.11.017

扩散过滤燃烧火焰特性

史俊瑞¹, 李本文¹, 徐有宁², 薛治家², 王树群²

1. 东北大学材料电磁研究教育部重点实验室, 辽宁沈阳 110819;
2. 沈阳工程学院辽宁省洁净燃烧发电与供热技术实验室, 辽宁沈阳 110136

收稿日期:2012-04-06 修回日期:2012-07-28 出版日期:2012-11-05 发布日期:2012-11-05
通讯作者: 史俊瑞
作者简介:史俊瑞(1973-),男,博士。
基金资助:
国家自然科学基金项目(51076109,51176026);中国博士后基金项目(2012M510823)。

Flame characteristics for diffusion filtration combustion

SHI Junrui¹, LI Benwen¹, XU Youning², XUE Zhijia², WANG Shuqun²

1. Key Laboratory of Electromagnetic Processing of MaterialsMinistry of Education, Northeastern University, Shenyang 110819, Liaoning, China;
2. Key Laboratory of Clean Combustion for Electric Generation and Heat Supply Technology of Liaoning Province, Shenyang Institute of Engineering, Shenyang 110136, Liaoning, China

Received:2012-04-06 Revised:2012-07-28 Online:2012-11-05 Published:2012-11-05
Supported by:
supported by the National Natural Science Foundation of China(51076109,51176026).

摘要/Abstract

摘要： 扩散过滤燃烧是新的燃烧技术,具有扩散燃烧和预混过滤燃烧的某些特性。通过二维双温模型,使用单步总包反应,数值研究氮气稀释的甲烷和氧气同轴同平板扩散过滤燃烧特性。模型中考虑热弥散和组分弥散效应。研究小球直径、气体混合物速度和甲烷质量分数对火焰高度和火焰形态的影响。结果表明,与预混过滤燃烧不同,气体和固体高温区存在于燃烧器的不同位置;而在高温区域之外,气体和多孔介质固体的温差很小。当填充床小球直径从6.66 mm减小到2.02 mm,火焰高度从0.048 m增大到0.12 m。增大混合物速度,甲烷的质量分数导致火焰变宽,火焰高度增大。数值模型的有效性得到了实验验证。

关键词: 火焰高度, 火焰形态, 扩散过滤燃烧

Abstract: Diffusion filtration combustion is a new combustion technology,which combines some characteristics of diffusion combustion and premixed filtration combustion.A numerical study of diffusion filtration flame characteristics in a nitrogen diluted CH₄+N₂/O₂ co-flow plane-parallel is conducted using a two-dimensional two-temperature model with a simple reaction rate mechanism.Both thermal and species dispersion effects are taken into account.The effects of pellet diameter(d),gas mixture velocity(u_g)and mass fraction of CH₄(Y_CH₄),etc.on the flame shape and flame height are investigated.Results show that high gas and solid temperature zones exist at different locations compared to the premixed filtration combustion,and that in the area aside of the high temperature zone the differences between the gas and porous solid temperatures are very small.Flame height increases from 0.048 m to 0.12 m as d decreases from 6.66 mm to 2.02 mm.Increases in u_g and Y_CH₄ reduce the flame width and flame height.The calculated result is verified by experimental data.

Key words: flame height, flame shape, diffusion filtration combustion

中图分类号:

TK411.1

史俊瑞, 李本文, 徐有宁, 薛治家, 王树群. 扩散过滤燃烧火焰特性[J]. 化工学报, 2012, 63(11): 3500-3505.

SHI Junrui, LI Benwen, XU Youning, XUE Zhijia, WANG Shuqun. Flame characteristics for diffusion filtration combustion[J]. CIESC Journal, 2012, 63(11): 3500-3505.

参考文献 15

[1]	Zheng Chenghuang,Cheng Leming,Li Tao,Luo Zhongyang,Cen Kefa.Filtration combustion characteristics of low calorific gas in SIC foams[J].Fuel,2010,89:2331-2337
[2]	Shi Junrui,Xie Maozhao,Liu Hong,Li Gang,Zhou Lei.Numerical simulation and theoretical analysis of low-velocity filtration combustion of lean mixture[J].International Journal of Heat and Mass Transfer,2008,51:1818-1829
[3]	Zhang G,Cai X,Liu M,Chen Y,Wang L. Characteristics analysis of low-velocity gas filtration combustion in an inert packed bed[J].Combustion Theory and Modeling,2006,10(4):683-700
[4]	Buckmaster J,Takeno T.Blow off and flashback of an excess enthalpy flame:short communication[J].Combustion Science and Technology,1981,25:153-158
[5]	Kamiuto K,Ogawa T.Diffusion flames in cylindrical packed beds[J].AIAA J. Thermophys. Heat Transfer,1997,11(4):585-587
[6]	Kamiuto K,Miyamoto S.Diffusion flame in plane-parallel packed beds[J].International Journal of Heat and Mass Transfer,2004,47:4953-4599
[7]	Dobrego K V,Kozlov I M,Zhdanok S A,Gnesdilov N V. Modeling of diffusion filtration combustion radiative burner[J].International Journal of Heat and Mass Transfer,2001,44:3265-3272
[8]	Xu Sheng(许胜),Liu Minghou(刘明侯),Xu Kan(徐侃),Lu You(陆游).Experimental study on flame stability characteristics of porous media bluff-bodies[J]. Journal of University of Science and Technology of China(中国科学技术大学学报),2011,41(5):445-451
[9]	Smyth K C,Miller J H,Dorfman R C,Mallard W G,Santoro R J.Soot inception in a methane/air diffusion flame as characterized by detailed species profiles[J].Combustion and Flame,1985,62:157-181
[10]	Irvin Glassman.Combustion[M].New York:Academic Press,1996:132-139
[11]	Hottel H C,Hawthorne W R.Diffusion in laminar jets[J].Symposium on Combustion and Flame,and Explosion Phenomena,1949,3(1):254-266
[12]	Burke S P,Schumann T E W.Diffusion flame[J].Ind.Eng.Chem.,1928,20:998-1004
[13]	Charest M R J,Groth C P T,Gülder Ö L.A numerical study on the effects of pressure and gravity in laminar ethylene diffusion flames[J].Combustion and Flame,2011,158(10):1933-1945
[14]	Guo H S,Liu F S,Smallwood G J,Gulder O L.The flame preheating effect on numerical modeling of soot formation in a two-dimensional laminar ethylene-air diffusion flame[J].Combustion Theory and Modeling,2002,6:173-187
[15]	Mohamad A A,Ramadhyani S,Visknta R.Modeling of combustion and heat transfer in a packed bed with embedded coolant tubes[J].International Journal of Heat and Mass Transfer,1994,37(8):1181-1191

扩散过滤燃烧火焰特性

Flame characteristics for diffusion filtration combustion

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