Please wait a minute...
浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (8): 1465-1471    DOI: 10.3785/j.issn.1008-973X.2012.08.017
能源工程     
氧体积分数对乙烯扩散火焰中烟黑生成影响的实验
梁军辉, 黄群星, 冯玉霄, 池涌, 严建华
浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
Experimental analysis of the effect of oxygen concentration on
soot formation in ethylene diffusion flame
LIANG Jun-hui, HUANG Qun-xing, FENG Yu-xiao, CHI Yong, YAN Jian-hua
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
 全文: PDF  HTML
摘要：

为了研究氧体积分数对扩散火焰中烟黑颗粒生长和聚合特性的影响,采用热泳沉积取样结合透射电子显微镜(TEM)图像,分析富氧和贫氧环境下乙烯/O2/N2扩散火焰中烟黑颗粒的粒径和颗粒凝聚体平均颗粒数,并采用激光消光法同步测量烟黑颗粒在火焰轴向和径向的体积分数分布.实验结果表明：对于乙烯扩散火焰,氧体积分数的增加,使火焰中心同一高度上的烟黑粒径和凝聚体平均颗粒数增大,进而引起烟黑体积分数增大,峰值位置前移；在火焰径向方向烟黑颗粒分布向中心收缩,边缘位置烟黑体积分数增大.对于本文讨论的扩散火焰,氧体积分数的增加对烟黑的生成具有促进作用,这对于火焰颗粒污染物的控制研究具有参考意义.
Abstract:

In order to evaluate the effect of oxygen concentration on soot formatting and agglomerating in oxygen-lean and-rich C2H4/ O2/ N2 diffusion flame, the diameter of individual particle and mean size of soot agglomerates sampled by thermophoretic method were estimated from transmission electron microscopy (TEM) images. The volume fraction profiles along vertical and radial directions were measured by laser extinction method. Results show that, for diffusion flame, with increased oxygen concentration, soot particle diameter and mean size of agglomerates at the same vertical position will increase and the vertical location of the peak value of soot volume fraction will shift towards flame bottom. The radial distribution of soot volume fraction becomes narrow and peak values near the flame edge increase quickly. For the flame discussed in this paper, soot formation is enhanced with enriched oxygen concentration. The results can be used for small particle pollutants control from combustion.
出版日期: 2012-09-23
:  TK 16  
基金资助:

国家“973”重点基础研究发展计划资助项目（2011CB201506，2009CB219802).
通讯作者: 黄群星,男,副教授.     E-mail: hqx@zju.edu.cn
作者简介: 梁军辉(1987—),男,硕士生,从事燃烧诊断与控制等方向研究.E-mail: 20927045@zju.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

梁军辉, 黄群星, 冯玉霄, 池涌, 严建华. 氧体积分数对乙烯扩散火焰中烟黑生成影响的实验[J]. J4, 2012, 46(8): 1465-1471.

LIANG Jun-hui, HUANG Qun-xing, FENG Yu-xiao, CHI Yong, YAN Jian-hua. Experimental analysis of the effect of oxygen concentration on
soot formation in ethylene diffusion flame. J4, 2012, 46(8): 1465-1471.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.08.017    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I8/1465

［1］ GLASSMAN I. Soot formation in combustion processes ［C］∥ Twentysecond Symposium (International) on Combustion. Pittsburgh: Combustion Institute, 1989: 295-311.
［2］ HUANG H, BUEKENS A. On the mechanisms of dioxin formation in combustion processes［J］. Chemosphere, 1995, 31(9): 4099-4117.
［3］ SOLOMON S, QIN D, MANNING M, et al. Climate change 2007: The physical science basis［M］. London: Cambridge University Press, 2007: 1-21.
［4］ MANSUROV Z A. Soot formation in combustion processes (Review)［J］. Combustion, Explosion, and Shock Waves, 2005, 41(6): 727-744.
［5］ CHOI M Y, MULHOLLAND G W, HAMINS A, et al. Comparisons of the soot volume fraction using gravimetric and light extinction techniques［J］. Combustion and Flame, 1995, 102(1/2): 161-169.
［6］ MEGARIDIS C M, GRIFFIN D W, KONSUR B. Sootfield structure in laminar sootemitting microgravity nonpremixed flames ［C］∥ Twentysixth Symposium (International) on Combustion. Pittsburgh: Combustion Institute, 1996: 1291-1299.
［7］ LEE KO, MEGARIDIS C M, ZELEPOUGA S, et al. Soot formation effects of oxygen concentration in the oxidizer stream of laminar coannular nonpremixed methane/ air flames ［J］. Combustion and Flame, 2000, 121(1/2): 323-333.
［8］ SHIM S H, SHIN H D. Transition morphology of deposits on SiC fibers in propane/ air laminar diffusion flames［J］. Combustion and Flame, 2002, 131(1/2): 210-218.
［9］ SHIM S H, AHN K Y, JEONG S H, et al. Study of deposit morphology in a propane diffusionflame under fuelrich conditions ［J］. Applied Energy, 2004, 79(2): 179-189.
［10］ WANG Y, NATHAN G J, ALWAHABI Z T, et al. Effect of a uniform electric field on soot in laminar premixed ethylene/ air flames ［J］. Combustion and Flame, 2010, 157(7): 1308-1315.
［11］ JOO H I, GLDER  L. Soot formation and temperature structure in small methaneoxygen diffusion flames at subcritical and supercritical pressures ［J］. Combustion and Flame, 2010, 157(6): 1194-1201.
［12］ HU B, YANG B, KOYLU U O. Soot measurements at the axis of an ethylene/ air nonpremixed turbulent jet flame ［J］. Combustion and Flame, 2003, 134(1/2): 93-106.
［13］ ZHU J, CHOI M Y, MULHOLLAND G W, et al. Measurement of visible and nearinfrared optical properties of soot produced from laminar flames［C］∥ Twentyninth Symposium (International) on Combustion. Pittsburgh: Combustion Institute, 2002: 2367-2374.
［14］ KOYLU U O, FAETH G M. Optical properties of overfire soot in buoyant turbulent diffusion flames at long residence times ［J］. Journal of Heat Transfer, 1994, 116(1): 152-159.
［15］ ARANA C P, PONTONI M, SEN S, et al. Field measurements of soot volume fractions in laminar partially premixed coflow ethylene/ air flames ［J］. Combustion and Flame, 2004, 138(4): 362-372.
［16］ SMYTH K C, SHADDIX C R. The elusive history of m=1.570.56i for the refractive index of soot ［J］. Combustion and Flame, 1996, 107(3): 314-320.
［17］ ZHU J, IRRERA A, CHOI M Y, et al. Measurement of light extinction constant of JP8 soot in the visible and nearinfrared spectrum ［J］. International Journal of Heat and Mass Transfer, 2004, 47(17/18): 3643-3648.
［18］ DE IULIIS S, BARBINI M, BENECCHI S, et al. Determination of the soot volume fraction in an ethylene diffusion flame by multiwavelength analysis of soot radiation ［J］. Combustion and Flame, 1998, 115(1/2): 253-261.
［19］ KOEYLUE U, XING Y, ROSNER D E. Fractal morphology analysis of combustiongenerated aggregates using angular light scattering and electron microscope images ［J］. Langmuir, 1995, 11(12): 4848-4854.
［20］ SNELLING D R, THOMSON K A, SMALLWOOD G J, et al. Twodimensional imaging of soot volume fraction in laminar diffusion flames［J］. Applied Optics, 1999, 38(12): 2478-2485.
［21］ THOMSON K A, JOHNSON M R, SNELLING D R, et al. Diffuselight twodimensional lineofsight attenuation for soot concentration measurements［J］. Applied Optics, 2008, 47(5): 694-703.
[1] 韩志江, 周俊虎, 杨卫娟, 杨成虎, 刘建忠, 岑可法. 镁在水蒸气中着火特性和模型分析[J]. J4, 2013, 47(2): 267-272.
[2] 杨文闯, 杨卫娟, 周志军, 袁炜东, 陈瑶姬, 周俊虎, 岑可法. 不同二次风角度的W炉冷态流场实验研究[J]. J4, 2013, 47(1): 139-145.
[3] 陈瑶姬,周志军,周宁,杨卫娟,刘建忠,周俊虎,岑可法. 贵州无烟煤的燃烧特性和NOx排放特性试验[J]. J4, 2011, 45(11): 2020-2025.
[4] 杜聪, 黄镇宇, 刘建忠, 赵子通, 李波, 周俊虎, 岑可法. 大容量空气雾化水煤浆喷嘴的实验研究[J]. J4, 2011, 45(4): 727-733.
[5] 周俊虎,汪洋,杨卫娟,刘建忠,王智化,岑可法. 不同外部风温对微尺度火焰的影响[J]. J4, 2011, 45(1): 146-150.